CN119231557A

CN119231557A - Capacitor switching method, intelligent capacitor device and electronic equipment

Info

Publication number: CN119231557A
Application number: CN202411718761.0A
Authority: CN
Inventors: 徐晓凤; 陶显升; 陶海峰
Original assignee: Delixi Electric Co Ltd
Current assignee: Delixi Electric Co Ltd
Priority date: 2024-11-28
Filing date: 2024-11-28
Publication date: 2024-12-31
Anticipated expiration: 2044-11-28
Also published as: CN119231557B

Abstract

The application provides a capacitor switching method, an intelligent capacitor device and electronic equipment, and belongs to the technical field of power equipment. The capacitor switching method comprises the steps of determining first state information of a target capacitor connected with a target phase line, determining second state information of the target capacitor based on a power factor of the target phase line, wherein the second state information is used for indicating a second state of the target capacitor at the next moment, determining a second switch unit in a target switching switch according to a first switch unit in the target switching switch when the second state is inconsistent with the first state, controlling the second switch unit to execute on or off actions based on the second state, and controlling other switch units except the second switch unit in the target switching switch to keep on so as to enable the target capacitor to be switched into the target phase line at the next moment or enable the target capacitor to be disconnected with the target phase line at the next moment.

Description

Capacitor switching method, intelligent capacitor device and electronic equipment

Technical Field

The present application relates to the field of power equipment technologies, and in particular, to a capacitor switching method, an intelligent capacitor device, and an electronic device.

Background

With the rapid development of power systems and the continuous increase of power quality requirements, reactive compensation equipment plays an increasingly important role in power systems. Reactive compensation can not only improve the power factor of the power grid and reduce line loss, but also improve the stability and safety of the power system. As an important component of reactive compensation equipment, the intelligent capacitor device is widely applied to various power systems and used for adjusting reactive power of a power grid in real time.

In the prior art, when a capacitor in an intelligent capacitor device is switched, a magnetic latching relay is generally adopted as a switching switch. The magnetic latching relay has higher mechanical strength and quick response characteristic, but contact wear easily occurs in frequent switching operation of the magnetic latching relay, so that the electrical life of the magnetic latching relay is shortened, the stability and durability required by frequent switching of the capacitor are difficult to meet, and the overall reliability of the intelligent capacitor device is influenced.

Disclosure of Invention

The application provides a capacitor switching method, an intelligent capacitor device and electronic equipment, and aims to solve the problems that in the prior art, the electrical life of a switching switch is shortened and the reliability of the intelligent capacitor device is poor due to contact wear of the switching switch in frequent switching operation.

The application provides a capacitor switching method which is applied to an intelligent capacitor device, wherein the intelligent capacitor device comprises a controller, a plurality of capacitors and a plurality of switching switches, the capacitors are connected with one or more phase lines of three-phase alternating current, the switching switches comprise a plurality of switching units which are connected in series, the first switching unit which is connected in series is connected with the output end of one phase line of the three-phase alternating current, the last switching unit which is connected in series is connected with one or more capacitors, and the control end of the switching unit is connected with the controller.

The capacitor switching method comprises the following steps:

Determining first state information of a target capacitor connected with a target phase line, wherein the target phase line is any phase line of the three-phase alternating current, and the first state information is used for indicating a first state of the target capacitor at the current moment, and the first state is a throwing state or a cutting state;

determining second state information of the target capacitor based on the power factor of the target phase line, wherein the second state information is used for indicating a second state of the target capacitor at the next moment, and the second state is a put-in state or cut-out state;

Determining a second switch unit in a target switching switch according to a first switch unit in the target switching switch when the second state is inconsistent with the first state, wherein the target switching switch is the switching switch connected with the target capacitor, the first switch unit is a switch unit which last executes on or off actions of the target switching switch, the second switch unit is a switch unit adjacent to the first switch unit along a serial direction when the first switch unit last executes on actions, or the second switch unit is a first switch unit when the first switch unit last executes off actions;

and based on the second state, controlling the second switch unit to execute an on-off action, and controlling other switch units except the second switch unit in the target switching switch to keep an on-state so as to enable the target capacitor to be thrown into the target phase line at the next moment or enable the target capacitor to be disconnected from the target phase line at the next moment.

The embodiment of the application provides a capacitor switching method which is applied to an intelligent capacitor device. The intelligent capacitive device includes a controller, a plurality of capacitors, and a plurality of switching switches, each switching switch including a plurality of switching units connected in series. The switching method comprises the steps of firstly determining a first state of a target capacitor connected with a target phase line at the current moment, secondly determining a second state of the target capacitor at the next moment based on a power factor of the target phase line, determining a second switch unit in a target switching switch according to a first switch unit in the target switching switch connected with the target capacitor when the second state is inconsistent with the first state, and finally controlling the second single switch to execute on or off action based on the second state and controlling other switch units except the second switch unit in the target switching switch to keep on so as to enable the target capacitor to be put into the target phase line at the next moment or enable the target capacitor to be cut off from the target phase line at the next moment. In the application, a first switch unit in the target switching switch is a switch unit which performs on or off actions last time in the target switching switch, a second switch unit is a switch unit adjacent to the first switch unit along a serial direction under the condition that the switch unit performs on actions last time, or the second switch unit is a first switch unit, and the second switch unit is the first switch unit under the condition that the switch unit performs off actions last time. Compared with the prior art, the capacitor switching method can alternately control different switch units in the target switching switch to switch the target capacitor through the controller under the condition of frequently switching the target capacitor, so that the load of frequent switching operation is uniformly distributed to each switch unit of the target switching switch, the working frequency of a single switch unit is reduced, the contact wear of the single switch unit is effectively reduced, the electrical life of the target switching switch is prolonged, and the use reliability of the intelligent capacitor device is remarkably improved.

In one possible design, the determining the second state information of the target capacitance based on the power factor of the target phase line includes:

generating an action command related to the target capacitor based on the power factor of the target phase line, wherein the action command comprises a hold command, a throw-in command or a cut-out command, the hold command is used for enabling the target capacitor to be in the first state at the next time, the throw-in command is used for enabling the target capacitor to be in the throw-in state at the next time, and the cut-out command is used for enabling the target capacitor to be in the cut-out state at the next time;

And determining the second state information according to the action instruction.

In one possible design, when the first state is the put-in state and the second state is the cut-out state, the controlling the second switching unit to perform an on or off action and controlling all other switching units except the second switching unit in the target switching switch to maintain an on state based on the second state includes:

And based on the cut-off state, controlling the second switch unit to execute a cut-off action, and controlling other switch units except the second switch unit in the target switching switch to keep a conducting state so as to disconnect the target capacitor from the target phase line at the next moment.

In one possible design, after the controlling the second switching unit to perform an off action based on the cut-off state and controlling all other switching units except the second switching unit in the target switching switch to remain in an on state, the method further includes:

and judging whether the target capacitor is successfully cut off or not based on the first voltage and the second voltage which are respectively corresponding to the two ends of the target switching switch.

In one possible design, after the determining whether the target capacitor is successfully cut off based on the first voltage and the second voltage that correspond to the two ends of the target switching switch, the method further includes:

Judging whether first identification information corresponding to a third switch unit exists in a fault record table or not under the condition that the target capacitor is cut off and fails, wherein the third switch unit is the switch unit which cannot be disconnected in the target switching switch;

Taking second identification information corresponding to the second switch unit as the first identification information and regarding the second switch unit as the first switch unit under the condition that the first identification information does not exist in the fault record table, and repeatedly executing the step of determining the second switch unit in the target switch according to the first switch unit in the target switch until the target capacitor is successfully cut off or the target capacitor is failed to be cut off again;

Judging whether third identification information corresponding to the second switch unit is identical to the first identification information or not under the condition that the target capacitor is cut off again and fails and the first identification information exists in the fault record table;

And when the third identification information is different from the first identification information, the second switch unit is regarded as the first switch unit, and the step of determining the second switch unit in the target switching switch according to the first switch unit in the target switching switch is repeatedly executed until the target capacitor is successfully cut off, or the third identification information is identical to the first identification information.

In one possible design, in the case where the first identification information does not exist in the fault record table, the method further includes:

the method comprises the steps of sending first alarm information, wherein the first alarm information is used for indicating that the second switch unit cannot be disconnected;

in the case that the third identification information is the same as the first identification information, the method further includes:

and sending second alarm information, wherein the second alarm information is used for indicating that the intelligent capacitor device has a fault removal.

In one possible design, when the first state is the cut-out state and the second state is the put-in state, the controlling the second switching unit to perform an on or off action and controlling all other switching units except the second switching unit in the target switching switch to maintain an on state based on the second state includes:

And controlling the second switch unit to execute conducting action based on the switching-on state, and controlling other switch units except the second switch unit in the target switching switch to keep conducting state so as to enable the target capacitor to be switched on the target phase line at the next moment.

In one possible design, after the controlling the second switching unit to perform the on-state based on the put-in state and controlling all other switching units except the second switching unit in the target switching switch to maintain the on-state, the method further includes:

Judging whether the target capacitor is put into success or not based on a first voltage and a second voltage which are respectively corresponding to two ends of the target capacitor;

and sending third alarm information under the condition that the input of the target capacitor fails, wherein the third alarm information is used for indicating that the intelligent capacitor device fails.

In a second aspect, the present application provides an intelligent capacitive device comprising a controller, a plurality of capacitors, and a plurality of switching switches;

the capacitor is connected with one or more phase lines of the three-phase alternating current;

The switching switch comprises a plurality of switching units which are connected in series, wherein the first switching unit which is connected in series is connected with the output end of one phase line of the three-phase alternating current, the last switching unit which is connected in series is connected with one or more capacitors, and the control end of the switching unit is connected with the controller;

wherein the controller is adapted to perform the method as described in the first aspect or the various possible designs of the first aspect.

In a third aspect, the present application provides an electronic device comprising a memory and at least one processor;

the memory stores computer-executable instructions;

The at least one processor executes computer-executable instructions stored by the memory such that the at least one processor performs the method as described above in the first aspect or in the various possible designs of the first aspect.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium having stored therein computer-executable instructions which, when executed, implement a method as described in the first aspect or the various possible designs of the first aspect.

In a fifth aspect, the present application provides a computer program product comprising computer program code which, when run on a computer, causes the computer to carry out the method as described above for the first aspect or the various possible designs of the first aspect.

In a sixth aspect, the present application provides a chip comprising interface circuitry and logic circuitry, the interface circuitry being for receiving signals from or transmitting signals to other chips than the chip, the logic circuitry being for implementing the method as described above in the first aspect or in the various possible designs of the first aspect.

Drawings

Fig. 1 is a schematic flow chart of a capacitor switching method according to an embodiment of the present application;

Fig. 2 is a schematic circuit block diagram of an intelligent capacitor device according to an embodiment of the present application;

FIG. 3 is a schematic block diagram of another intelligent capacitor device according to an embodiment of the present application;

Fig. 4 is a schematic flow chart of another capacitive switching method according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a capacitive switching device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs, the terms used in the description of this application are for the purpose of describing particular embodiments only and are not intended to be limiting of the application, and the terms "comprising" and "having" and any variations thereof in the description of this application and the claims and drawings are intended to cover non-exclusive inclusions.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of the phrase "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The term "and/or" is merely an association relation describing the association object, and indicates that three kinds of relations may exist, for example, a and/or B may indicate that a exists, a and B may exist at the same time, and B may exist. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Furthermore, the terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not for describing a particular sequential order, and may be used to improve one or more of these features either explicitly or implicitly.

In the description of the present application, unless otherwise indicated, the meaning of "plurality of" and "at least two" means two or more (including two), and the meaning of "plurality of" and "at least two" means two or more (including two).

In the description of the present application, unless explicitly stated and limited otherwise, the terms "connected" and "connected" should be interpreted broadly, for example, "connected" or "connected" may mean not only a physical connection but also an electrical connection or a signal connection, for example, may be a direct connection, i.e. a physical connection, or may be an indirect connection through at least one element in between, so long as electrical communication is achieved, and may also be a communication between two elements, and signal connection may also mean a signal connection through a medium, e.g. radio waves, in addition to a signal connection through an electrical circuit. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

In order to enable those skilled in the art to better understand the present application, a technical solution of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, different technical features of the present application may be combined with each other.

First, terms related to one or more embodiments of the present specification will be explained.

And the sub-compensation capacitor device is used for independently compensating each phase of current in the three-phase four-wire power supply system. The separate compensation capacitor device can realize independent control of A, B, C three-phase currents through the switching switch and respectively provide compensation for each phase of current, so that the capacitor of each phase can be independently put into or out of working state according to the requirement. The separate compensation capacitor device is suitable for a three-phase alternating current system with unbalanced load.

And the co-compensation capacitor device is used for compensating three phases of the three-phase alternating current simultaneously. The three-phase capacitors of the co-compensation capacitor device are simultaneously thrown in or cut off at the same time, namely, the compensation of the three-phase currents is synchronously carried out. The co-compensation capacitor device is suitable for three-phase alternating current with relatively balanced load and required to integrally improve the power factor.

The following describes the implementation background of the technical solution provided by the embodiment of the present application.

With the rapid development of power systems and the continuous increase of power quality requirements, reactive compensation equipment plays an increasingly important role in power systems. Reactive compensation can not only improve the power factor of the power grid and reduce line loss, but also improve the stability and safety of the power system. As an important component of the reactive compensation equipment, the intelligent capacitor device is widely applied to various power systems and used for adjusting reactive power of a power grid in real time, so that the running efficiency and stability of the power systems are optimized.

In the prior art, as the magnetic latching relay has higher mechanical strength and quick response characteristic, the magnetic latching relay is generally adopted as a switching switch of a capacitor in the intelligent capacitor device. However, in practical applications, after the magnetic latching relay is subjected to frequent switching operation, the contacts are worn, so that the electrical life of the magnetic latching relay is shortened, and the stability and durability required by frequent switching of the capacitor are difficult to meet. The contact wear of the magnetic latching relay not only reduces the reliability of the magnetic latching relay, but also can influence the overall stability of the intelligent capacitor device, thereby influencing the stable operation of the whole power system.

Based on the problems existing in the related art, the application provides a capacitor switching method which is applied to an intelligent capacitor device. The intelligent capacitive device includes a controller, a plurality of capacitors, and a plurality of switching switches, each switching switch including a plurality of switching units connected in series. The switching method comprises the steps of firstly determining a first state of a target capacitor connected with a target phase line at the current moment, secondly determining a second state of the target capacitor at the next moment based on a power factor of the target phase line, determining a second switch unit in a target switching switch according to a first switch unit in the target switching switch connected with the target capacitor when the second state is inconsistent with the first state, and finally controlling the second single switch to execute on or off action based on the second state and controlling other switch units except the second switch unit in the target switching switch to keep on so as to enable the target capacitor to be put into the target phase line at the next moment or enable the target capacitor to be cut off from the target phase line at the next moment. In the application, a first switch unit in the target switching switch is a switch unit which performs on or off actions last time in the target switching switch, a second switch unit is a switch unit adjacent to the first switch unit along a serial direction under the condition that the switch unit performs on actions last time, or the second switch unit is a first switch unit, and the second switch unit is the first switch unit under the condition that the switch unit performs off actions last time. Compared with the prior art, the capacitor switching method can alternately control different switch units in the target switching switch to switch the target capacitor through the controller under the condition of frequently switching the target capacitor, so that the load of frequent switching operation is uniformly distributed to each switch unit of the target switching switch, the working frequency of a single switch unit is reduced, the contact wear of the single switch unit is effectively reduced, the electrical life of the target switching switch is prolonged, and the use reliability of the intelligent capacitor device is remarkably improved.

Next, how to solve the problems of short electrical life of the switch and poor reliability of the intelligent capacitor device caused by contact wear of the switch during frequent switching operation is described in detail by some embodiments and drawings.

Fig. 1 is a schematic flow chart of a capacitor switching method according to an embodiment of the present application. As shown in fig. 1, the capacitor switching method provided in the embodiment of the application specifically includes S101 to S104, and the following details of S101 to S104 are described.

It should be noted that, the capacitor switching method provided by the embodiment of the application is applied to an intelligent capacitor device.

The intelligent capacitive device includes a controller, a plurality of capacitors, and a plurality of switching switches.

The capacitor is connected with one or more phase lines of the three-phase alternating current.

The switching switch comprises a plurality of switching units connected in series, wherein the first switching unit connected in series is connected with the output end of one phase line of the three-phase alternating current, the last switching unit connected in series is connected with one or more capacitors, and the control end of the switching unit is connected with the controller.

Fig. 2 is a schematic circuit block diagram of an intelligent capacitor device according to an embodiment of the present application. As shown in fig. 2, in one embodiment of the present application, the smart capacitor device is a split-complement capacitor device, and the smart capacitor device includes a controller 210, three capacitors 220, and three switching switches 230.

It should be noted that the three capacitors 220 are connected by a Y-connection method. One end of each of the three capacitors 220 is connected to a neutral point, and the other end of each of the three capacitors 220 is connected to one phase line of the three-phase alternating current 240, and the three capacitors 220 form a Y-shaped structure.

In the present embodiment, the three-phase alternating current 240 is a three-phase four-wire alternating current, and the three-phase alternating current 240 includes three phase lines (a phase, B phase, and C phase) and one neutral line (N phase).

Three capacitors 220 are in one-to-one correspondence with three on-off switches 230, and three phase lines of a three-phase alternating current 240, each capacitor 220 being connected to its corresponding phase line by its corresponding on-off switch 230.

For each of the switching switches 230, the first switching element 2301 connected in series is connected to the output of the phase line corresponding to the switching switch 230, the last switching element 2301 connected in series is connected to the capacitor 220 corresponding to the switching switch 230, and the control terminal of each switching element 2301 in the switching switch 230 is connected to the controller 210.

Fig. 3 is a schematic block diagram of another intelligent capacitor device according to an embodiment of the present application. In another embodiment of the present application, as shown in fig. 3, the smart capacitive device is a co-compensation capacitive device, and the smart capacitive device includes a controller 310, three capacitors 320, and two switching switches 330.

The three capacitors 320 are connected by delta connection. For each capacitor 320 of the three capacitors 320, one end of the capacitor 320 is connected to one phase line of the three-phase alternating current 340, the other end of the capacitor 320 is connected to the other phase line of the three-phase alternating current 340, and the three capacitors 320 form a closed delta-shaped structure between the three phase lines of the three-phase alternating current 340.

In the present embodiment, the three-phase alternating current 340 is a three-phase three-wire alternating current, and the three-phase alternating current 340 includes three phase lines (a phase, B phase, and C phase).

The three capacitors 320 are a first capacitor, a second capacitor, and a third capacitor, respectively, and the two switching switches 330 are a first switching switch and a second switching switch, respectively. One end of the first capacitor is connected with the output end of the phase A of the three-phase alternating current 340 through the first switching switch, the other end of the first capacitor is connected with the output end of the phase B of the three-phase alternating current 340, one end of the second capacitor is connected with the output end of the phase B of the three-phase alternating current 340, the other end of the second capacitor is connected with the output end of the phase C of the three-phase alternating current 340 through the second switching switch, one end of the third capacitor is connected with the output end of the phase C of the three-phase alternating current 340, and the other end of the third capacitor is connected with the output end of the phase A of the three-phase alternating current 340.

For the first switching switch, the first switching unit 3301 connected in series is connected to the output terminal of the a phase of the three-phase alternating current 340, the last switching unit 2301 connected in series is connected to one end of the first capacitor, and the control terminal of each switching unit 3301 in the first switching switch is connected to the controller 310.

For the second switching switch, the first switching unit 3301 connected in series is connected to the output terminal of the C-phase of the three-phase alternating current 340, the last switching unit 2301 connected in series is connected to the other end of the second capacitor, and the control terminal of each switching unit 3301 in the second switching switch is connected to the controller 310.

In the above embodiment, it should be noted that the number of the switching units in the switching switch may be manually set by the power system manager according to the actual situation, and the embodiment is not limited in particular.

For example, the switching switch includes 10 switching units connected in series.

The capacitor switching method provided by the embodiment of the application can switch the capacitor in the intelligent capacitor device no matter whether the intelligent capacitor device is a separate compensation capacitor device or a common compensation capacitor device, and the capacitor switching method provided by the embodiment of the application is described in detail below.

It should be noted that, the implementation main body of the capacitor switching method provided by the embodiment of the application is a controller in the intelligent capacitor device.

S101, the controller determines first state information of a target capacitor connected with a target phase line.

The target phase line is any phase line of three-phase alternating current. The target capacitor is a capacitor connected with the target phase line in the intelligent capacitor device.

It should be noted that, in the case that the load of the three-phase alternating current is unbalanced and the intelligent capacitor device is a split-complement capacitor device, the controller needs to determine whether reactive compensation needs to be performed on one or more phase lines according to the power factors of the three phase lines of the three-phase alternating current. By setting the target phase line as any phase line of the three-phase alternating current, independent compensation of each phase line can be realized, so that the intelligent capacitor device can flexibly adjust the input or cut-off states of capacitors connected with different phase lines according to the power factors of different phase lines, thereby effectively balancing the load of the three-phase alternating current, improving the power factor of the three-phase alternating current and optimizing the operation efficiency of a power grid.

It should be noted that, under the condition that the load of the three-phase alternating current is balanced and the intelligent capacitor device is a co-compensation capacitor device, reactive compensation requirements of three phase lines of the three-phase alternating current are consistent, and the controller can determine whether reactive compensation needs to be performed on the three phase lines of the three-phase alternating current simultaneously only according to the power factor of any phase line of the three-phase alternating current. By setting the target phase line as any phase line of the three-phase alternating current, the controller adjusts the input state or the cut-off state of all the capacitors connected with the three-phase alternating current by monitoring the power factor of any phase line, thereby simplifying the control logic and ensuring the reactive compensation effect of the whole power grid.

The first state information is used for indicating a first state of the target capacitor at the current moment, and the first state is a throwing state or a cutting state.

It should be noted that, the controller may detect the first voltage and the second voltage corresponding to the target switch at the current moment through the voltage detection module in the intelligent capacitor device, and determine the state of the target switch according to the first voltage and the second voltage corresponding to the target switch, and then determine the first state of the target capacitor according to the state of the target switch.

The target switch is a switch connected with the target capacitor in the intelligent capacitor device.

Specifically, the intelligent capacitor device further comprises a plurality of voltage detection modules.

In some embodiments, in the case that the intelligent capacitor device is a split-complement capacitor device, the number of the voltage detection modules is three, and the three voltage detection modules, the three switching switches and the three capacitors, and the three phase lines of the three-phase alternating current are in one-to-one correspondence.

In other embodiments, in the case that the intelligent capacitor device is a co-compensation capacitor device, the number of the voltage detection modules is two, the two voltage detection modules and the two switching switches are in one-to-one correspondence, one of the two voltage detection modules corresponds to a of the three-phase alternating current, and the other voltage detection module corresponds to C of the three-phase alternating current.

In the above embodiment, whether the intelligent capacitor device is a split-complement capacitor device or a co-complement capacitor device, for each voltage detection module, a first input end of the voltage detection module is connected to an output end of a phase line of the corresponding three-phase alternating current, a second input end of the voltage detection module is connected to an output end of the corresponding switching switch, and both the first output end and the second output end of the voltage detection module are connected to the controller. The voltage detection module is used for detecting a first voltage and a second voltage which are respectively corresponding to two ends of the corresponding switching switch.

The voltage detection module can detect the first voltage corresponding to one end of the corresponding switching switch under the condition that the first input end of the voltage detection module is connected with the output end of the phase line of the corresponding three-phase alternating current, and can detect the second voltage corresponding to the other end of the corresponding switching switch under the condition that the second output end of the voltage detection module is connected with the output end of the corresponding switching switch, and the detected first voltage and second voltage are sent to the controller so that the controller can determine the state of each switching switch according to the first voltage and the second voltage corresponding to each switching switch and further determine the switching state of the capacitor corresponding to each switching switch.

The structure of the voltage detection module is an existing structure, and this implementation is not repeated.

In this embodiment, for any one of the switching switches, the switching switch is turned on when the first voltage and the second voltage corresponding to the switching switch are equal, the capacitor corresponding to the switching switch is in the on state, and the switching switch is turned off when the first voltage and the second voltage corresponding to the switching switch are not equal, and the capacitor corresponding to the switching switch is in the off state.

S102, the controller determines second state information of the target capacitor based on the power factor of the target phase line.

The controller can determine the power factor of the target phase line according to the phase current of the target phase line and the phase voltage or line voltage of the target phase line.

It should be noted that, the method of determining the power factor of the target phase line by the controller according to the phase current of the target phase line and the phase voltage or line voltage of the target phase line is an existing method, and this implementation will not be described again.

The second state information is used for indicating a second state of the target capacitor at the next moment, and the second state is a throwing state or a cutting state.

The next time is a time after the current time. The controller may determine the second state of the target capacitance at the next time based on the power factor of the target phase line at the current time.

When the power factor of the target phase line is smaller than the first preset power factor, the reactive power requirement of the target phase line is larger, and reactive compensation of the target phase line needs to be increased, so that the second state of the target capacitor at the next moment is the input state.

When the power factor of the target phase line is greater than the second preset power factor, it indicates that the reactive power of the target phase line has been well compensated, and even may exceed the compensation requirement of the target phase line, so that the second state of the target capacitor at the next moment is a cut-off state.

It should be noted that the first preset power factor is smaller than the second preset power factor. The first preset power factor and the second power factor may be manually set by a power system manager according to actual situations, which is not particularly limited in this embodiment.

For example, the first preset power factor is 0.95 and the second preset power factor is 0.98.

And S103, when the second state is inconsistent with the first state, the controller determines a second switch unit in the target switching switch according to the first switch unit in the target switching switch.

In the case where the second state is identical to the first state, it is unnecessary to perform any switching operation on the target capacitor, and the target capacitor is maintained in the first state.

In the case where the second state does not coincide with the first state, it is explained that the controller needs to switch the state of the target capacitance at the next timing, and therefore, the controller needs to determine the second switching unit in the target switching switch.

The target switching switch is a switching switch connected with the target capacitor.

The target switching switch is used for controlling connection and disconnection of the target capacitor and the target phase line. When the target switching switch is turned on, the target capacitor is connected with the target phase line, the target capacitor is in a put-in state, and when the target switching switch is turned off, the target capacitor is disconnected with the target phase line, and the target capacitor is in a cut-off state.

When the target switching switch is turned on, the plurality of switching units included in the target switching switch are all kept in an on state, and when the target switching switch is turned off, one of the plurality of switching units included in the target switching switch is turned off, and the other switching units are all kept in an on state. That is, the controller can control the target switching switch to perform the on or off operation by controlling only one switching unit of the target switching switch to perform the on or off operation, thereby controlling the target capacitor to be turned on or off.

The first switch unit is a switch unit which performs on or off actions last time on the target switching switch.

The first switching means is a switching means for performing an on or off operation in the target switching switch when the target capacitor is switched on or off last time.

For example, the target switching switch includes three switching units connected in series, the three switching units connected in series are a switching unit S1, a switching unit S2, and a switching unit S3, respectively, the switching unit S1 is further connected to an output end of the target phase line, and the switching unit S3 is further connected to a capacitor corresponding to the target switching switch. Before the last moment of the current moment, the switch unit S1 is in an off state, the switch unit S2 and the switch unit S3 are both in an on state, at the moment, the target capacitor is in an off state, and at the last moment, the target capacitor is required to be put into the target phase line, and the controller controls the switch unit S1 to execute the on action to enable the target switching switch to be conducted, so that the target capacitor is put into the target phase line. In this case, the first switching unit is the switching unit S1.

When the first switch unit performs the on operation last time, the second switch unit is a switch unit adjacent to the first switch unit along the serial direction, or the second switch unit is a first switch unit.

When the first switching unit is turned on last time and the first switching unit is the last switching unit in the target switching switch, the second switching unit is the first switching unit in the target switching switch.

In the case where the first switching unit performs the on operation last time and the first switching unit is any one of the target switching switches except the last switching unit, the second switching unit is a switching unit adjacent to the first switching unit in the series direction.

The series direction refers to a direction from the target phase line to the target capacitance.

For example, the target switching switch includes three switching units connected in series, the three switching units connected in series are a switching unit S1, a switching unit S2, and a switching unit S3, respectively, the switching unit S1 is further connected to an output end of the target phase line, and the switching unit S3 is further connected to a capacitor corresponding to the target switching switch. Before the last moment of the current moment, the switch unit S2 is in an off state, the switch unit S1 and the switch unit S3 are both in an on state, at the moment, the target capacitor is in an off state, and at the last moment, the target capacitor is required to be put into the target phase line, and the controller controls the switch unit S2 to execute the on action to enable the target switching switch to be conducted, so that the target capacitor is put into the target phase line. In this case, the first switching unit is a switching unit S2, and the second switching unit is a switching unit S3 adjacent to the switching unit S2 in the serial direction.

For another example, the target switching switch includes three switching units connected in series, the three switching units connected in series are a switching unit S1, a switching unit S2, and a switching unit S3, respectively, the switching unit S1 is further connected to an output end of the target phase line, and the switching unit S3 is further connected to a capacitor corresponding to the target switching switch. Before the last moment of the current moment, the switch unit S3 is in an off state, the switch unit S1 and the switch unit S2 are in an on state, at the moment, the target capacitor is in an off state, and at the last moment, the target capacitor is required to be put into the target phase line, and the controller controls the switch unit S3 to execute the on action to enable the target switching switch to be conducted, so that the target capacitor is put into the target phase line. In this case, the first switching unit is the switching unit S3, and the second switching unit is the switching unit S1.

The second switch unit is the first switch unit when the first switch unit executes the opening action last time.

When the switching operation is performed on the target capacitor, the controller can implement the switching of the target capacitor only by controlling one of the switching units in the target switching switch to perform the on or off operation, and all the other switching units except the switching unit performing the on or off operation in the target switching switch are kept in the on state.

And S104, the controller controls the second switch unit to execute the on-off action based on the second state, and controls other switch units except the second switch unit in the target switching switch to keep the on state so as to enable the target capacitor to be put into the target phase line at the next moment or enable the target capacitor to be disconnected with the target phase line at the next moment.

When the second state is the on state, the controller controls the second switching unit to perform the on operation, so that the target switching switch is turned on, and the target capacitor is then put into the target phase line at the next time.

And under the condition that the second state is the cut-off state, the controller controls the second switch unit to execute the cut-off action, so that the target switching switch is cut off, and the target capacitor is further disconnected from the target phase line at the next moment.

It should be noted that, no matter the second switch unit executes the on-state or off-state, other switch units except the second switch unit in the target switching switch are all kept in the on-state, so as to ensure that the controller can control the switching of the target capacitor only by controlling the second switch unit, thereby effectively improving the switching efficiency of the target capacitor.

In the above embodiment, the controller needs to determine the second state information of the target capacitance based on the power factor of the target phase line. Next, a detailed description will be given of a specific procedure for determining the second state information of the target capacitance by the controller based on the power factor of the target phase line.

Fig. 4 is a flow chart of another capacitive switching method according to an embodiment of the present application. In a possible embodiment, as shown in fig. 4, the method steps shown in S102 may be implemented by S1021 and S1022, and S1021 and S1022 are described in detail below.

S1021, the controller generates an action instruction related to the target capacitance based on the power factor of the target phase line.

Wherein the action instructions include a hold instruction, a throw-in instruction, or a cut instruction.

The holding instruction is used for enabling the target capacitor to be in a first state at the next moment, namely, the holding instruction is used for indicating the second state to be in the first state.

It should be noted that, when the power factor of the target phase line is greater than or equal to the first preset power factor and the power factor of the target phase line is less than or equal to the second preset power factor, the state of the target capacitor is indicated to be adapted to the requirement of the target phase line, so that the controller generates a hold command to instruct the target switching switch to maintain the current state at the next time, and further the target capacitor is enabled to continue to maintain the first state at the current time at the next time.

The input command is used for enabling the target capacitor to be in an input state at the next moment.

When the power factor of the target phase line is smaller than the first preset power factor, reactive compensation is required to be performed on the target phase line, so that the controller generates a switching instruction to instruct the target switching switch to be in a conducting state at the next moment, and further the target capacitor to be in a switching state at the next moment.

The cutting instruction is used for enabling the target capacitor to be in a cutting state at the next moment.

When the power factor of the target phase line is greater than the second preset power factor, the controller generates a cut-off command to instruct the target on-off switch to be in an off state at the next moment, so that the target capacitor is in the cut-off state at the next moment.

And S1022, the controller determines second state information according to the action instruction.

The controller can determine the second state of the target capacitor at the next moment according to the action instruction.

The first state is a put-in state, and the second state is a put-in state when the action instruction includes a hold instruction, the second state is a cut-out state when the first state is a cut-out state, and the second state of the target capacitor is a cut-out state when the action instruction includes a put-in instruction.

In the embodiment of the application, the controller generates the holding instruction, the input instruction or the cutting instruction related to the target capacitor according to the power factor change of the target phase line, ensures that the second state of the target capacitor is matched with the actual requirement of the target phase line, realizes the optimization of reactive compensation, and avoids overcompensation or insufficient compensation.

In the above embodiment, the controller needs to determine whether the second state is consistent with the first state, and if the second state is inconsistent with the first state, determine the second switch unit in the target switch according to the first switch unit in the target switch. Next, a detailed description will be given of a specific process in which the controller determines whether the second state is identical to the first state.

As shown in fig. 4, before the method step S103, the capacitor switching method further includes S10a1 to S10a3, and the following details of S10a1 to S10a3 are described.

S10a1, the controller judges whether the first state is a cutting state or not.

It should be noted that, the controller may detect the first voltage and the second voltage corresponding to the target switch at the current moment through the voltage detection module in the above embodiment, to determine whether the target switch is turned on, and further determine whether the first state of the target capacitor is the cut-off state.

The first state of the target capacitor is a cut-off state when the first voltage and the second voltage corresponding to the target switch at the current moment are not equal, and the first state of the target capacitor is a put-in state when the first voltage and the second voltage corresponding to the target switch at the current moment are equal.

When the controller determines that the first state is the cut-out state, the controller executes S10a2, and when the controller determines that the first state is the put-in state, the controller executes S10a3.

S10a2, the controller judges whether the second state is a cutting state.

It should be noted that, the controller may determine the second state of the target capacitor according to the method shown in the above embodiment S1022, which is not limited in this embodiment.

When the controller determines that the second state is the cut-off state, that is, the second state is consistent with the first state, the controller does not need to perform switching operation on the target capacitor, and at this time, the controller repeatedly executes the steps shown in the above embodiment S101, so as to implement real-time detection on the target phase line, ensure timely response of the intelligent capacitor device to reactive compensation requirements of the target phase line, and effectively improve stability of the power system.

In the case where the controller determines that the second state is the put-in state, that is, the second state is inconsistent with the first state, the controller performs the steps shown in the above-described embodiment S103 to determine the second switching unit in the target on-off switch.

S10a3, the controller judges whether the second state is a put-in state.

When the controller determines that the second state is the on state, that is, the second state is identical to the first state, the controller does not need to perform the switching operation on the target capacitor, and at this time, the controller repeatedly executes the steps shown in the above embodiment S101.

In the case where the controller determines that the second state is the cut-off state, i.e., the second state is inconsistent with the first state, the controller performs the method steps shown in the above-described embodiment S103 to determine the second switching unit in the target on-off switch.

In the above-described embodiment, the controller needs to control the second switching unit to perform the on or off action based on the second state, and control all the other switching units except the second switching unit in the target switching switch to maintain the on state. Next, a method executed by the controller when the first state is the put-in state and the second state is the cut-out state will be described in detail.

In a possible embodiment, as shown in fig. 4, in the case that the second state is inconsistent with the first state, and the first state is the put state and the second state is the cut state, the method step shown in S104 may be implemented by S1041, and S1041 is described in detail below.

S1041, the controller controls the second switch unit to execute the opening action based on the cutting state, and controls other switch units except the second switch unit in the target switching switch to keep the conducting state, so that the target capacitor is disconnected with the target phase line at the next moment.

When the first state of the target capacitor is the on state, all the switch units in the target switching switch are kept in the on state. In order to make the second state of the target capacitor be the cut-off state, the controller only needs to control the second switch unit in the target switch to execute the cut-off action at the next moment and control other switch units except the second switch unit in the target switch to keep the on state, so that the target switch can be cut off at the first moment. Under the condition that the target switching switch is disconnected, the target capacitor is disconnected with the target phase line, and the target capacitor is in a cut-off state.

In the embodiment of the application, when the second state is inconsistent with the first state, the first state is the input state, and the second state is the cut-off state, the controller controls the second switch unit to execute the cut-off action, and controls other switch units except the second switch unit in the target cut-off switch to keep the on state, so that the target capacitor is disconnected with the target phase line at the next moment, thereby realizing the cut-off of the target capacitor, avoiding the excessive compensation of reactive power of the target phase line, and further avoiding the problem of fluctuation or instability of the power grid caused by the excessive compensation of reactive power.

In the above embodiment, after the controller controls the second switching unit to perform the off operation based on the cut-off state and controls all the other switching units except the second switching unit in the target switching switch to maintain the on state, it is also necessary to determine whether the cut-off of the target capacitor is successful. Next, a detailed description will be given of a specific process of the controller for judging whether the target capacitance is successfully cut off.

As shown in fig. 4, in a possible embodiment, after the method shown in S1041, the capacitor switching method further includes S10b, and the following description will describe S10b in detail.

S10b, the controller judges whether the target capacitor is successfully cut off or not based on the first voltage and the second voltage which are respectively corresponding to the two ends of the target switching switch.

It should be noted that, the method for the controller to obtain the first voltage and the second voltage corresponding to the two ends of the target on-off switch may refer to the method shown in S101, which is not described in detail in this embodiment.

And under the condition that the first voltage and the second voltage corresponding to the target switching switch are equal, indicating that the target capacitor is still in the switching state, and judging that the target capacitor is cut off failure by the controller.

And under the condition that the first voltage and the second voltage corresponding to the target switching switch are not equal, indicating that the target capacitor is in a cut-off state, and judging that the target capacitor is cut off successfully by the controller.

In the embodiment of the application, the controller determines whether the target capacitor is successfully cut off by detecting the first voltage and the second voltage at the two ends of the target switching switch so as to ensure that each step in the switching process of the target capacitor is effectively verified, and unnecessary loss caused by manual operation or intelligent capacitor device faults is avoided.

In the above embodiment, the controller needs to determine whether the target capacitor is successfully cut off based on the first voltage and the second voltage corresponding to the two ends of the target switch respectively. Next, a method performed by the controller after determining whether the target capacitor is successfully cut off will be described in detail.

In a possible embodiment, as shown in fig. 4, in a case where the controller determines that the target capacitor is successfully cut, the capacitor switching method further includes S10c1 and S10c2 after the method step shown in S10 b. S10c1 and S10c2 will be described in detail below.

And S10c1, the controller judges whether first identification information corresponding to the third switch unit exists in the fault record table or not under the condition that the target capacitor is successfully cut off.

The fault record table is a data table for storing first identification information corresponding to a third switch unit in the target switching switch.

The third switching unit is a switching unit which cannot be disconnected in the target switching switch. Specifically, the third switching unit is a switching unit which is in contact adhesion and cannot be normally opened in the target switching switch.

It should be noted that, each switch unit corresponds to a unique identification information, and the identification information may be a serial number of the switch unit in the target on-off switch, or may be other information, which is not specifically limited in this embodiment.

For example, the target switching switch includes three switching units connected in series, the three switching units connected in series are the switching unit S1, the switching unit S2, and the switching unit S3, and serial numbers of the switching unit S1, the switching unit S2, and the switching unit S3 in the target switching switch are 1,2, and 3, respectively, in the series connection order. In the case where the switching unit S2 is the third switching unit, the first identification information stored in the failure record table is 2.

It should be noted that, when the first identification information corresponding to the third switch unit does not exist in the fault record table, it is indicated that all the switch units in the target switching switch can work normally, and at this time, the controller repeatedly executes the steps shown in the above embodiment S101, so as to implement real-time detection of the target phase line.

When the first identification information corresponding to the third switch unit exists in the fault record table, it is indicated that the third switch unit in the target switching switch has a contact adhesion fault, and at this time, the controller executes S10c2.

S10c2, the controller controls the intelligent capacitor device to stop working.

In this embodiment, when the first identification information exists in the fault record table, that is, when the third switching unit exists in the target switching switch, the controller controls the intelligent capacitor device to stop working, so that the intelligent capacitor device is prevented from performing switching operation again under the condition that the switching unit fails, and further, larger damage to the power system and the intelligent capacitor device is avoided.

In a possible embodiment, as shown in fig. 4, after the method step shown in S10b, the capacitor switching method further includes S10d1 to S10d4, and the following details of S10d1 to S10d4 are described in detail below, in case that the controller determines that the target capacitor is cut out fails.

S10d1, the controller judges whether first identification information corresponding to the third switch unit exists in the fault record table or not under the condition that the target capacitor is cut off and fails.

It should be noted that, in the case that the target capacitor is cut off and fails, the method for determining whether the first identification information corresponding to the third switch unit exists in the fault record table is the same as the method shown in S10c1, which is not described in detail in this embodiment.

The controller may execute the method step shown in S10d2 in case of failure of target capacitor removal and the failure record table does not have the first identification information, and may directly execute the method step shown in S10d3 in case of failure of target capacitor removal and the failure record table has the first identification information.

And S10d2, under the condition that the first identification information does not exist in the fault record table, the controller takes the second identification information corresponding to the second switch unit as the first identification information, takes the second switch unit as the first switch unit, and repeatedly executes the steps of the method shown in the S103 until the target capacitor is successfully cut off or the target capacitor is failed to be cut off again.

When the first identification information does not exist in the fault record table, the second switch unit is the switch unit which cannot be disconnected for the first time in the target switching switch, so that the controller stores the second identification information corresponding to the second switch unit as the first identification information in the fault record table, and meanwhile, the controller also regards the second switch unit as the first switch unit, repeatedly executes the method steps shown in the S103 to determine a new second switch unit and judges whether the target capacitor can be successfully cut off through the new second switch unit.

It should be noted that, in the case where the controller repeatedly executes the method steps shown in S103 and the target capacitor is successfully cut off by the new second switch unit, the controller executes the method steps shown in S10c 1. In the case where the controller repeatedly performs the above-described method steps shown in S103 and fails to cut off the target capacitance again through the new second switching unit, the controller performs the method steps shown in S10d 3.

S10d3, the controller judges whether the third identification information corresponding to the second switch unit is identical with the first identification information or not under the condition that the target capacitor is cut off again and fails and the first identification information exists in the fault record table.

The third identification information corresponding to the second switch unit refers to the identification information corresponding to the new second switch unit determined in S10d 2.

In the case where the target capacitor fails to be cut again, the controller needs to determine whether the first identification information exists in the fault record table again, and since the second identification information corresponding to the second switching unit is already stored as the first identification information in the fault record table in S10d2, the first identification information must exist in the fault record table in the case where the target capacitor fails to be cut again in the method step shown in S10d 3.

In case the third identification information is different from the first identification information, the controller performs the method steps shown in S10d 4.

And S10d4, regarding the second switch unit as a first switch unit when the third identification information is different from the first identification information, and repeating the steps of the method shown in the S103 until the target capacitor is successfully cut off, or the third identification information is identical to the first identification information.

Note that, when the controller repeatedly executes the method steps shown in S103 and successfully cuts off the target capacitor, the controller executes the method steps shown in S10c 1. In the case that the controller repeatedly executes the method steps shown in S103 and the third identification information is the same as the first identification information, it is indicated that the controller has controlled each switch unit in the target on-off switch to execute a turn-off operation once, and that the contact adhesion failure of each switch unit cannot be successfully turned off. In this case, the controller may determine that the target capacitance cannot be successfully cut off by the target switching switch, and the controller performs the method steps shown in S10c2 described above.

In the present embodiment, by judging whether the third identification information is identical to the first identification information, it is determined whether to continue to regard the second switching unit as the first switching unit to repeatedly perform the method steps shown in S103 described above. And if the third identification information is different from the first identification information, continuing to consider the second switch unit as the first switch unit, and repeatedly executing the method steps shown in the S103 so that the controller determines whether all switch units of the target switching switch have contact adhesion faults or not, and if the switch units which have no contact adhesion faults exist in the target switching switch, the controller can also successfully cut off the target capacitor. If the third identification information is the same as the first identification information, the controller may determine that contact adhesion failure occurs in all the switch units of the target switching switch, and the controller does not repeatedly execute the method steps shown in S103, thereby avoiding continuing to repeat the invalid operation.

In the above embodiment, the controller is further required to send the first alarm information to the monitoring computer when the first identification information does not exist in the fault record table, and is further required to send the second alarm information to the monitoring computer when the third identification information is identical to the first identification information. Next, the specific contents of the first alarm information and the second alarm information will be described in detail.

In a possible embodiment, as shown in fig. 4, after the method step shown in S10d2, the capacitor switching method further includes S10e, and the following description will refer to S10 e.

S10e, the controller sends first alarm information.

In the intelligent capacitor device provided by the application, the controller is also connected with the monitoring computer through the communication module so as to facilitate the controller to upload related data to the monitoring computer for remote monitoring, and in addition, the monitoring computer can also send related instructions to the controller through the communication module so as to facilitate remote management.

The first alarm information is used for indicating that the second switch unit cannot be disconnected.

In this embodiment, when the controller performs the disconnection action to cut off the target capacitor by controlling the second switch unit, and the target capacitor is cut off and fails, and the first identification information does not exist in the fault record table, the controller sends the first alarm information to the monitoring computer, so as to inform the monitoring personnel in time that the second switch unit has the contact adhesion fault and cannot be disconnected.

In the case that the third identification information is the same as the first identification information, the capacitor switching method further includes S10f, and the following details of S10f are described.

S10f, the controller sends second alarm information.

The second alarm information is used for indicating that the intelligent capacitor device has an excision fault.

In this embodiment, the controller sends the second alarm information to the monitoring computer under the condition that the third identification information is the same as the first identification information, so that the controller can report the problem to the monitoring computer in time when the intelligent capacitor device is subjected to fault removal, and important reference information is provided for the subsequent maintenance and fault investigation of the intelligent capacitor device, so that the operation and maintenance efficiency and safety of the intelligent capacitor device are improved.

In the above-described embodiment, the controller needs to control the second switching unit to perform the on or off action based on the second state, and control all the other switching units except the second switching unit in the target switching switch to maintain the on state. Next, a method executed by the controller when the first state is the cut-off state and the second state is the put-in state will be described in detail.

As shown in fig. 4, in a possible embodiment, in the case that the second state is inconsistent with the first state, and the first state is the cutting state and the second state is the putting state, the method shown in S104 may be implemented in S1042, and S1042 will be described in detail below.

And S1042, the controller controls the second switch unit to execute the conducting action based on the switching state, and controls other switch units except the second switch unit in the target switching switch to keep the conducting state, so that the target capacitor is switched into the target phase line at the next moment.

When the first state of the target capacitor is the cut-off state, the first switch unit in the target switch is turned off, and all other switch units except the first switch unit in the target switch remain in the on state. In order to make the second state of the target capacitor be the on state, the controller controls the first switch unit (the second switch unit) to execute the conducting action at the next moment, and controls other switch units except the second switch unit in the target switch to keep the conducting state. And under the condition that the target switching switch is conducted, the target capacitor is connected with the target phase line, and the target capacitor is in a switching state.

In the embodiment of the application, when the second state is inconsistent with the first state, the first state is the cut-off state, and the second state is the input state, the controller controls the second switch unit in the target switching switch to execute the conducting action, and controls other switch units except the second switch unit in the target switching switch to keep the conducting state, so that all switch units in the target switching switch keep the conducting state, and further the target capacitor is connected with the target phase line at the next moment, thereby realizing the input of the target capacitor.

In the above embodiment, after the controller controls the second switching unit to perform the on operation based on the on state and controls all the other switching units except the second switching unit in the target switching switch to maintain the on state, it is also necessary to determine whether the on of the target capacitor is successful. Next, a specific process of the controller determining whether the target capacitance has been successfully put into operation will be described in detail.

As shown in fig. 4, in a possible embodiment, after the method shown in S1042, the capacitive switching method further includes S10g1 and S10g2, and S10g1 and S10g2 are described in detail below.

S10g1, the controller judges whether the target capacitor is put into operation or not based on the first voltage and the second voltage which are respectively corresponding to the two ends of the target switching switch.

And under the condition that the first voltage and the second voltage corresponding to the target switching switch are equal, indicating that the target capacitor is in the switching state, and judging that the switching of the target capacitor is successful by the controller. In the case that the controller determines that the input of the target capacitance is successful, the controller repeatedly executes the steps shown in the above embodiment S101 to realize real-time detection of the target phase line.

And under the condition that the first voltage and the second voltage corresponding to the target switching switch are not equal, indicating that the target capacitor is in a still cut-off state, and judging that the input of the target capacitor fails by the controller. In the case where the controller determines that the target capacitance drop fails, the controller executes S10g2.

S10g2, the controller sends third alarm information when the target capacitor fails to be put into operation.

The third alarm information is used for indicating that the intelligent capacitor device has a drop-in fault.

It should be noted that, under the condition that the input of the target capacitor fails, the controller sends the third alarm information to the monitoring computer, so that the problem can be timely reported to the monitoring computer when the input of the intelligent capacitor device fails, and important reference information is provided for the subsequent maintenance and fault investigation of the intelligent capacitor device, so that the operation and maintenance efficiency and safety of the intelligent capacitor device are improved.

In this embodiment, the controller determines whether the target capacitor is successfully put into operation by detecting the first voltage and the second voltage at both ends of the target switch, so as to ensure that each step in the switching process of the target capacitor is effectively verified, and avoid unnecessary loss caused by manual operation or failure of the intelligent capacitor device.

The embodiment of the application provides an intelligent capacitor device which comprises a controller, a plurality of capacitors and a plurality of switching switches.

The controller is used for executing the operations executed by the controller in the method embodiment.

It should be noted that, the structures of the controller, the plurality of capacitors, and the plurality of switching switches included in the intelligent capacitive device are described in detail in the above method embodiments, and are not described herein for brevity.

Fig. 5 is a schematic structural diagram of a capacitor switching device according to an embodiment of the present application. As shown in fig. 5, the capacitive switching device 500 provided in this embodiment may exist independently, and be used to implement the operations corresponding to the controller in the above-described method embodiment.

The capacitive switching device 500 may include a transceiver module 501 and a processing module 502. The processing module 502 is configured to perform data processing, and the transceiver module 501 may implement corresponding communication functions. Transceiver module 501 may also be referred to as a communication interface or communication unit.

Optionally, the capacitive switching device 500 may further include a storage unit, where the storage unit may be used to store instructions and/or data, and the processing module 502 may read the instructions and/or data in the storage unit, so that the capacitive switching device 500 implements the steps implemented by the controller in the foregoing method embodiments.

The transceiver module 501 is configured to perform operations related to the reception of the controller in the foregoing method embodiment, and the processing module 502 is configured to perform operations related to the processing of the controller in the foregoing method embodiment.

Alternatively, the transceiver module 501 may include a transmitting module and a receiving module. The sending module is configured to perform the sending operation in the method embodiment. The receiving module is configured to perform the receiving operation in the above method embodiment.

It should be noted that, the capacitive switching device 500 may include a transmitting module, and not include a receiving module. Or the capacitive switching device 500 may include a receiving module instead of a transmitting module. Specifically, it may be determined whether the above scheme performed by the capacitive switching device 500 includes a transmitting action and a receiving action.

As one example, the capacitive switching device 500 is used to perform the actions performed by the controller in the embodiment shown in fig. 1, supra.

The capacitive switching device 500 may include a transceiver module 501 and a processing module 502.

The processing module 502 is configured to determine first state information of a target capacitor connected to a target phase line, where the target phase line is any phase line of three-phase alternating current, and the first state information is configured to indicate a first state of the target capacitor at a current time, and the first state is an input state or an cut-out state.

The processing module 502 is further configured to determine second state information of the target capacitor based on the power factor of the target phase line, where the second state information is used to indicate a second state of the target capacitor at a next moment, and the second state is a put-in state or a cut-out state.

The processing module 502 is further configured to determine, according to a first switch unit in the target on-off switch, a second switch unit in the target on-off switch when the second state is inconsistent with the first state, where the target on-off switch is a switch unit that is connected to the target capacitor, the first switch unit is a switch unit that performs an on or off operation last time on the target on-off switch, where the second switch unit is a switch unit adjacent to the first switch unit in the serial direction when the first switch unit performs an on operation last time, or where the second switch unit is a first switch unit, and where the second switch unit is a first switch unit when the first switch unit performs an off operation last time.

The processing module 502 controls the second switch unit to perform an on or off action based on the second state, and controls all other switch units except the second switch unit in the target switching switch to maintain an on state, so that the target capacitor is put into the target phase line at the next moment, or the target capacitor is disconnected from the target phase line at the next moment.

It should be understood that, the foregoing corresponding process performed by each module is already described in the foregoing method embodiments, and is not described herein for brevity.

The processing module 502 in the previous embodiments may be implemented by at least one processor or processor-related circuitry. Transceiver module 501 may be implemented by a transceiver or transceiver related circuitry. Transceiver module 501 may also be referred to as a communication unit or communication interface. The memory unit may be implemented by at least one memory.

Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in fig. 6, the electronic device 600 provided in this embodiment includes a memory 601 and a processor 602.

The memory 601 may be a separate physical unit, and may be connected to the processor 602 through a bus 603. The memory 601, the processor 602 may be integrated, implemented by hardware, or the like. The memory 601 is used to store program instructions that the processor 602 invokes to perform the operations performed by the controller in any of the method embodiments above.

Alternatively, when some or all of the methods of the above embodiments are implemented in software, the electronic device 600 may include only the processor 602. The memory 601 for storing programs is located outside the electronic device 600, and the processor 602 is connected to the memory through a circuit/wire for reading and executing the programs stored in the memory. The processor 602 may be a central processor (central processing unit, CPU), a network processor (network processor, NP) or a combination of CPU and NP. The processor 602 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (programmable logic device, PLD), or a combination thereof. The PLD may be a complex programmable logic device (complex programmable logic device, CPLD), a field-programmable gate array (FPGA) GATE ARRAY, generic array logic (GENERIC ARRAY logic, GAL), or any combination thereof.

The memory 601 may comprise volatile memory (RAM), such as random-access memory (RAM), non-volatile memory (flash memory), such as flash memory (flash memory), hard disk (HARD DISK DRIVE, HDD) or solid state disk (solid-state disk) (STATE DRIVE, SSD), or a combination of the above.

The application provides a chip, which comprises an interface circuit and a logic circuit, wherein the interface circuit is used for receiving signals from other chips outside the chip and transmitting the signals to the logic circuit, or sending the signals from the logic circuit to the other chips outside the chip, and the logic circuit is used for executing the operations executed by a controller in the embodiment of the method.

Illustratively, the present application provides a computer-readable storage medium having stored thereon computer program instructions that are executed by a processor of an electronic device to cause the electronic device to perform the operations performed by the controller in the above method embodiments.

The present application illustratively provides a computer program product which, when run on an electronic device, causes the electronic device to perform the operations performed by the controller in the above method embodiments.

The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The capacitor switching method is characterized by being applied to an intelligent capacitor device, wherein the intelligent capacitor device comprises a controller, a plurality of capacitors and a plurality of switching switches; the switching switch comprises a plurality of switching units which are connected in series, wherein the first switching unit is connected with the output end of one phase line of the three-phase alternating current, the last switching unit which is connected in series is connected with one or more capacitors, and the control end of the switching unit is connected with the controller;

The method comprises the following steps:

2. The method of claim 1, wherein the determining the second state information of the target capacitance based on the power factor of the target phase line comprises:

3. The method according to claim 1, wherein, in the case where the first state is the put-in state and the second state is the cut-out state, the controlling the second switching unit to perform an on or off action and controlling all other switching units of the target switching switch than the second switching unit to remain on based on the second state includes:

4. A method according to claim 3, wherein after said controlling said second switching unit to perform an off action based on said cut-off state and controlling all other switching units of said target switching switch than said second switching unit to remain in an on state, said method further comprises:

5. The method of claim 4, wherein after determining whether the target capacitance is successfully cut based on the first voltage and the second voltage corresponding to the two ends of the target switching switch, the method further comprises:

6. The method of claim 5, wherein in the absence of the first identification information in the fault log table, the method further comprises:

7. The method according to claim 1, wherein, in the case where the first state is the cut-out state and the second state is the put-in state, the controlling the second switching unit to perform an on or off action and controlling all other switching units of the target switching switch than the second switching unit to remain on based on the second state includes:

8. The method of claim 7, wherein after the controlling the second switching unit to perform the on-state based on the put-in state and controlling all other switching units of the target switching switch except the second switching unit to remain on-state, the method further comprises:

9. An intelligent capacitor device is characterized by comprising a controller, a plurality of capacitors and a plurality of switching switches;

Wherein the controller is configured to perform the capacitive switching method of any one of claims 1 to 8.

10. An electronic device comprising a memory and at least one processor;

the memory stores computer-executable instructions;

The at least one processor executing computer-executable instructions stored in the memory causes the at least one processor to perform the capacitive switching method of any one of claims 1 to 8.