CN114397528B - Logic action test method and device for remote spare power automatic switching device - Google Patents
Logic action test method and device for remote spare power automatic switching device Download PDFInfo
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- CN114397528B CN114397528B CN202210100256.4A CN202210100256A CN114397528B CN 114397528 B CN114397528 B CN 114397528B CN 202210100256 A CN202210100256 A CN 202210100256A CN 114397528 B CN114397528 B CN 114397528B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The invention provides a logic action test method and device of a remote automatic switching device. The method comprises the following steps: after a first spare power automatic switching logic action testing device positioned in a first transformer substation sends a voltage-losing instruction to a second spare power automatic switching logic action testing device positioned in a second transformer substation, outputting a first voltage-losing voltage to a first remote spare power automatic switching device positioned in the first transformer substation; if the first backup automatic switching logic action testing device detects a tripping signal sent by the first remote backup automatic switching device, disconnecting a line between a position monitoring interface of a first breaker of the first remote backup automatic switching device and a direct current positive power supply of a first transformer substation; after receiving the voltage-losing instruction, the second spare power automatic switching logic action testing device outputs a second voltage-losing voltage; if the second automatic backup power switching logic action testing device detects that the second remote automatic backup power switching device sends a switching-on signal, a line between a position monitoring interface of a second circuit breaker of the second remote automatic backup power switching device and a direct current positive power supply of a second transformer substation is connected.
Description
Technical Field
The invention relates to the field of power supply systems, in particular to a logic action test method and device of a remote automatic switching device.
Background
The automatic standby power switching device is called as an automatic standby power switching device and is applied to a transformer substation. The bus of the transformer substation is usually powered by at least two power supply lines, one power supply line is in an operation state, the other power supply line is in a standby state, and when the power supply line in the operation state loses power, the standby power automatic switching device accesses the power supply line in the standby state, so that the transformer substation is not powered down. The remote automatic switching device is a spare automatic switching device designed aiming at the characteristics of a power grid with a hand-in-hand structure by modifying the conventional spare automatic switching device. The remote automatic switching device is applied to two substations located in different places, and when one of the two substations loses voltage, the power supply circuit is switched for the substations through the cooperation action of the remote automatic switching device respectively located in the two substations, so that the power supply safety of the substations is guaranteed.
In order to ensure the operation safety of the power grid, the automatic backup switching system needs to be tested so as to perform relevant inspection on the action processing logic of the automatic backup switching device. However, since the serial power supply of the power grid involves a plurality of substations, and buses and lines related to the automatic backup power transmission are in an operating state, the actual power failure detection cannot be performed. Therefore, the method of simulating working conditions is generally adopted for inspection, and for a remote automatic backup power switching device related to a plurality of substations, how to accurately simulate the field condition of the power failure of the substation, and reduce errors caused by manual operation in the inspection process are technical problems to be solved.
Disclosure of Invention
The embodiment of the invention provides a logic action testing method and device of a remote automatic switching device, which are used for solving the defects that errors are caused by manual operation and the power failure of a transformer substation is difficult to accurately simulate when the on-site condition of the power failure of the transformer substation is manually simulated in the prior art.
The embodiment of the invention provides a logic action test method of a remote automatic switching device, which comprises the following steps:
After a first backup automatic switching logic action testing device positioned in a first transformer substation sends a voltage-losing instruction for instructing the second backup automatic switching logic action testing device to output a second voltage-losing voltage to a second backup automatic switching logic action testing device positioned in a second transformer substation, outputting the first voltage-losing voltage to a first remote backup automatic switching device positioned in the first transformer substation; if the first backup power automatic switching logic action testing device detects a tripping signal which is sent by the first remote backup power automatic switching device and is aimed at a first circuit breaker positioned in the first transformer substation, a line between a position monitoring interface of the first circuit breaker of the first remote backup power automatic switching device and a direct current positive power supply positioned in the first transformer substation is disconnected; the trip signal is used for indicating the first circuit breaker to disconnect a first power supply line of the power supply of the first transformer substation for supplying power to each device in the first transformer substation, and the trip signal is sent by the first remote spare power automatic switching device according to the first voltage loss voltage; after receiving the voltage-losing instruction sent by the first automatic switching logic action testing device, the second automatic switching logic action testing device outputs the second voltage-losing voltage to the second remote automatic switching device; if the second automatic backup switching logic action testing device detects a switching-on signal which is sent by the second remote automatic backup switching device and is aimed at a second circuit breaker positioned in the second transformer substation, a line between a position monitoring interface of the second circuit breaker of the second remote automatic backup switching device and a direct current positive power supply positioned in the second transformer substation is connected; the switching-on signal is used for indicating the second circuit breaker to be communicated with a power supply of the second transformer substation to supply power to a second power supply line of each device in the second transformer substation, and the switching-on signal is sent by the second remote automatic spare power switching device based on the second voltage loss voltage and a switching-on instruction sent by the first remote automatic spare power switching device.
In some embodiments, the outputting, by the first backup power automatic switching logic action test device, the first voltage-loss voltage includes: the voltage-losing simulation unit of the first spare power automatic switching logic action testing device outputs a first voltage-losing voltage to the voltage acquisition interface of the first remote spare power automatic switching device, and the first remote spare power automatic switching device is instructed to send out the tripping signal according to the first voltage-losing voltage detected by the voltage acquisition interface.
In some embodiments, the outputting, by the second backup power automatic switching logic action test device, the second voltage-loss voltage includes: and the voltage-losing simulation unit of the second automatic switching logic action testing device outputs a second voltage-losing voltage to the voltage acquisition interface of the second remote automatic switching device, and instructs the second remote automatic switching device to send out the closing signal according to the second voltage-losing voltage detected by the voltage acquisition interface.
In some embodiments, the first backup power automatic switching logic action test device responds to detection of a setting operation of an in-situ working mode, and the working mode of the first backup power automatic switching logic action test device is set to the in-situ working mode; the second automatic switching logic action testing device responds to the detection of the setting operation of the remote working mode, and the working mode of the second automatic switching logic action testing device is set to be the remote working mode.
In some embodiments, the first automatic backup power switching logic action test device displays prompt information for indicating that a trip signal sent by the first remote automatic backup power switching device has been received; and the second automatic switching logic action testing device displays prompt information for indicating that a closing signal sent by the second remote automatic switching device is received.
The embodiment of the invention provides a first backup power automatic switching logic action testing device, which is positioned in a first transformer substation and comprises:
the step-down instruction sending unit is used for sending a step-down instruction to a second automatic switching logic action testing device positioned in a second transformer substation, wherein the step-down instruction is an instruction for instructing the second automatic switching logic action testing device to output a second step-down voltage; the first voltage-loss simulation unit is used for outputting a first voltage-loss voltage to a first remote automatic switching device to be tested; the tripping signal detection unit is used for detecting a tripping signal of the first remote automatic switching device to be tested aiming at a first circuit breaker positioned in the first transformer substation; the tripping signal is sent by the first remote automatic switching device according to the first voltage-losing voltage; and the breaker disconnection state simulation unit is used for disconnecting a line between a position monitoring interface of a first breaker of the first remote spare power automatic switching device to be tested and a direct current positive power supply of the first transformer substation.
In some embodiments, the first automatic switching logic action test device further includes a first control unit, the breaker off state simulation unit includes an electromagnetic relay, the electromagnetic relay includes a node pair, and a first node in the node pair is connected with a direct current positive power supply; the second node in the node pair is connected with a position monitoring interface of a first breaker of the first remote automatic switching device to be tested; the circuit for disconnecting the position monitoring interface of the first breaker of the first remote automatic switching device to be tested and the direct current positive power supply of the first transformer substation comprises: the first control unit drives the electromagnetic relay to disconnect a connection line between the first node and the second node.
In some embodiments, the trip signal detection unit includes an optocoupler relay.
In some embodiments, the first voltage loss simulation unit comprises a controllable alternating current air-break and relay protection tester; the controllable alternating current idle input end is connected with the voltage output end of the relay protection tester, and the controllable alternating current idle output end is connected with the voltage acquisition interface of the first remote spare power automatic switching device.
The embodiment of the invention provides a second automatic backup power switching logic action testing device, which is positioned in a second transformer substation and comprises:
The step-down instruction receiving unit is used for receiving a step-down instruction sent by a first automatic backup power switching logic action testing device positioned in a first transformer substation, wherein the step-down instruction is an instruction for the first automatic backup power switching logic action testing device to instruct the second automatic backup power switching logic action testing device to output a second step-down voltage; the second voltage-loss simulation unit is used for outputting the second voltage-loss voltage to a second remote automatic switching device to be tested; the switching-on signal detection unit is used for detecting a switching-on signal which is sent by the second remote automatic switching device to be tested and is aimed at a second circuit breaker positioned in the second transformer substation; the switching-on signal is sent by the second remote automatic switching device based on the second voltage-losing voltage and a switching-on instruction sent by the first remote automatic switching device. And the circuit breaker closing state simulation unit is used for closing a circuit between a position monitoring interface of a second circuit breaker of the second remote spare power automatic switching device to be tested and a direct current positive power supply of the second transformer substation.
Therefore, the invention provides a logic action test method and a logic action test system for a remote automatic switching device, so as to accurately and efficiently complete the test of the remote automatic switching device.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an application scenario of a logic action test method of a remote automatic switching device according to a preferred embodiment of the present invention;
FIG. 2 is a flow chart of a logic action test method of a remote automatic switching device according to a preferred embodiment of the present invention;
FIG. 3 is a block diagram of a first automatic backup power switching logic action test device according to a preferred embodiment of the present invention;
fig. 4 is a block diagram of a second automatic backup power switching logic action test device according to a preferred embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which are derived by a person skilled in the art from the embodiments according to the invention without creative efforts, fall within the protection scope of the invention.
Fig. 1 is a schematic diagram of an application scenario of a logic action test method of a remote automatic backup power switching device according to a preferred embodiment of the present invention.
As shown in FIG. 1, the substations 1 to N located at N different places are hand-held ring network wiring lines, and an open-loop operation mode is adopted. N may be any integer other than 0, for example, 2 or 3, or may be any other number, not limited by the expression of the present invention.
As shown in fig. 1, each substation is equipped with at least one remote backup power automatic switching device. The automatic backup power switching device is called as an automatic backup power switching device, and when the power supply of the transformer substation fails, the automatic backup power switching device switches the available power supply for the transformer substation, so that the transformer substation can continue to operate normally. The remote automatic switching device can be an automatic switching device which is modified on the basis of a conventional automatic switching device and is designed according to the characteristics of a power grid with a hand-in structure, and the multiple sets of devices are mutually matched to jointly protect the power supply safety of a power system.
As shown in fig. 1, there is a common incoming line between any two substations, and this line is controlled by the switches (e.g. circuit breakers) of the two substations, respectively, e.g. the switch K1-2 is controlled by the substation 1 and the switch K2-2 is controlled by the substation 2.
As shown in fig. 1, each substation is equipped with at least one power supply, wherein the power supply equipped with substation 1 may be an operating power supply, by which the respective devices in substation 1 are powered, substation 1 powers the respective devices in substation 2 by being collinear, and so on.
Under the condition that the operation power supply of the transformer substation 1 can normally supply power, the corresponding circuit breaker K1-1 is in a closed state, and in the transformer substations 2-N, the circuit breakers K2-1-KN-1 corresponding to the power supply are in an open state.
In some embodiments, the method described in the invention can be used, and under the condition that the power supply of the transformer substation operates normally, the backup power automatic switching logic action test device is used for simulating the working condition, namely, the condition that the power supply of the transformer substation fails, so as to complete the test of the logic action of the remote backup power automatic switching device. Please refer to fig. 2 for a detailed test method, which is not described herein.
Fig. 2 is a flow chart of a logic action test method of the remote automatic switching device according to a preferred embodiment of the invention.
As shown in fig. 2, the logic action test method of the remote automatic switching device may include the following steps.
Step 210, the first spare power automatic switching logic action testing device located in the first transformer substation sends a voltage loss instruction to the second spare power automatic switching logic action testing device located in the second transformer substation.
The first substation may be a substation located at an open loop point of a plurality of substations connected using a hand-held ring network connection, for example, the substation 1 shown in fig. 1. The second substation may be a substation located at a non-open loop point among a plurality of substations connected using a hand-held ring network connection, such as substation 2 shown in fig. 1.
In some embodiments, the first automatic backup power switching logic action test device sets an operation mode of the first automatic backup power switching logic action test device to an in-place operation mode in response to detecting a setting operation of the in-place operation mode.
The second automatic switching logic action testing device responds to the detection of the setting operation of the remote working mode, and the working mode of the second automatic switching logic action testing device is set to be the remote working mode. The on-site working mode is the working mode of the automatic switching logic action testing device when the on-site operation of a person on duty of the transformer substation is performed. The remote working mode is the working mode of the automatic switching logic action testing device when the transformer substation is unattended. For example, an operator can make the first spare automatic switching logic action testing device send a voltage-losing instruction to the second spare automatic switching logic action testing device through a key, delay and output the voltage-losing voltage, so that the execution of the testing program is started, and the second spare automatic switching logic action testing device waits for receiving the voltage-losing instruction sent by the first spare automatic switching logic action testing device, so that the execution of the testing program is started according to the voltage-losing instruction.
The automatic backup power switching logic action test device can be a device for testing whether the logic action of the remote automatic backup power switching device is correct. The first automatic backup power switching logic action test device and the second automatic backup power switching logic action test device may be automatic backup power switching logic action test devices located in different substations, for example, the first automatic backup power switching logic action test device is located in a first substation, and the second automatic backup power switching logic action test device is located in a second substation.
The voltage-losing instruction is an instruction for indicating output voltage-losing voltage to other spare power automatic switching logic action testing devices. In some embodiments, the voltage-loss instruction is configured to instruct the second automatic backup power switching logic action test device to output a second voltage-loss voltage.
The step-down voltage is a voltage at which the power supply output is reduced too much when the power supply fails for some reason.
The first spare power automatic switching logic action testing device can send a voltage-losing instruction to the first spare power automatic switching logic action testing device in various modes. In some embodiments, the first automatic switching logic action test device may transmit the voltage loss instruction through a 4G communication module disposed in the device. The first automatic switching logic action test device can also transmit the voltage-losing instruction in other modes, for example, a 5G communication module, and is not limited by the expression of the specification.
Step 220, the first spare power automatic switching logic action test device outputs a first voltage-losing voltage.
The logic actions of the first remote automatic switching device and the second remote automatic switching device are as follows:
After the first remote automatic switching device located in the first transformer substation detects the first voltage loss, the following actions are performed: 1. the first circuit breaker is used for connecting a first power supply line of the first transformer substation for supplying power to each device in the first transformer substation by sending a tripping signal to the first circuit breaker located in the first transformer substation. After receiving the tripping signal, the first circuit breaker cuts off the first power supply line; 2. after the first remote automatic backup switching device detects that the first circuit breaker is in an open state, the power supply which is in fault is confirmed to be cut off, and then a closing instruction is sent to a second remote automatic backup switching device which is positioned in a second transformer substation through optical fibers. The switching-on instruction is used for indicating the second remote automatic switching device to start the power supply of the second transformer substation.
Because the speed of the optical fiber transmitting instruction is faster, the time difference between the time point when the second remote automatic switching device positioned in the second transformer substation detects the collinear voltage-losing voltage between the first transformer substation and the second transformer substation and the time point when the switching-on instruction is received is smaller, and therefore the second remote automatic switching device can determine that the power supply of the first transformer substation fails according to the switching-on instruction and the collinear voltage-losing voltage, and the power supply of the second transformer substation needs to be put into use so that the power supply provides power for all equipment of the second electric power station and all equipment of the first transformer substation.
The method of some embodiments of the present invention tests the first remote automatic switching device and the second remote automatic switching device under the condition of the simulated working condition. In order to avoid that the second remote automatic switching device detects the second voltage loss and receives the switching-on command sent by the first remote automatic switching device for too long, line maintenance is performed according to logic actions (for example, maintenance is performed on an incoming line shared between the first transformer substation and the second transformer substation to determine the cause of faults), a time point when the first voltage loss is output by the first automatic switching logic action testing device and a time point when the second voltage loss is output by the second automatic switching logic action testing device are required to be synchronized, so that the second remote automatic switching device can detect the second voltage loss and receive the switching-on command sent by the first remote automatic switching device in a shorter time interval, and accordingly expected logic actions are made.
According to the method disclosed by the embodiment of the invention, the first spare power automatic switching logic action testing device and the second spare power automatic switching logic action testing device transmit the voltage-losing instruction in a wireless mode, and the transmission time is longer than the transmission time of a switching-on instruction transmitted by using an optical fiber between the first remote spare power automatic switching device and the second remote spare power automatic switching device, so that in some embodiments, the first spare power automatic switching logic action testing device needs to delay outputting of the first voltage-losing voltage after transmitting the voltage-losing instruction to the second spare power automatic switching logic action testing device. The delay time may be set based on empirical or actual test data.
In some embodiments, the voltage-loss simulation unit of the first spare power automatic switching logic action test device outputs a first voltage-loss voltage to the voltage acquisition interface of the first remote spare power automatic switching device, and the first remote spare power automatic switching device sends a tripping signal according to the first voltage-loss voltage detected by the voltage acquisition interface.
Step 230, when the first backup power automatic switching logic action testing device detects a trip signal sent by a first remote backup power automatic switching device located in a first transformer substation and aiming at a first circuit breaker located in the first transformer substation, disconnecting a line between a position monitoring interface of the first circuit breaker of the first remote backup power automatic switching device and a direct current positive power supply located in the first transformer substation.
In some embodiments, the first circuit breaker is a circuit breaker in the first substation for connecting or disconnecting a first power supply line of the power supply source for powering the respective devices in the first substation. The first remote spare power automatic switching device sends out a tripping signal according to the first voltage-losing voltage. The trip signal is used for instructing the first circuit breaker to disconnect a first power supply line of the first transformer substation for supplying power to each device in the first transformer substation.
When the first backup automatic switching logic action testing device detects a tripping signal, the first remote backup automatic switching device simulates the disconnection state of the first circuit breaker. In some embodiments, the first automatic backup power switching logic action test device disconnects a line between a position monitoring interface of a first breaker of the first remote automatic backup power switching device and a direct current positive power supply located in the first transformer substation, so that a voltage value detected by the position monitoring interface of the first breaker is 0. Accordingly, the first remote automatic backup switching device can confirm that the first circuit breaker is in an open state, and sends a closing instruction to a second remote automatic backup switching device located in the second transformer substation through an optical fiber according to logic actions of the first circuit breaker.
In some embodiments, the first automatic backup power switching logic action test device displays prompt information for indicating that a trip signal sent by the first remote automatic backup power switching device has been received. For example, the second automatic switching logic action test device may display the prompt information on the liquid crystal display. Operators can clearly know whether the first remote automatic switching device makes correct logic actions.
See fig. 3 for details regarding the simulation of the open state of the first circuit breaker by the first backup power automatic switching logic action test device.
Step 240, after the second automatic backup power switching logic action testing device receives the voltage-losing instruction sent by the first automatic backup power switching logic action testing device, outputting a second voltage-losing voltage to the second remote automatic backup power switching device.
In some embodiments, the second automatic backup power switching logic action test device outputs the second voltage loss voltage after receiving the voltage loss instruction sent by the first automatic backup power switching logic action test device, so as to simulate the collinear voltage loss state between the first transformer substation and the second transformer substation to the second remote automatic backup power switching device.
In some embodiments, the voltage-loss simulation unit of the second automatic-switching logic action test device outputs a second voltage-loss voltage to the voltage acquisition interface of the second remote automatic-switching device, and the second remote automatic-switching device sends a closing signal according to the second voltage-loss voltage detected by the voltage acquisition interface.
Step 250, when the second automatic backup power switching logic action testing device detects a switching-on signal sent by the second remote automatic backup power switching device and aiming at a second circuit breaker positioned in a second transformer substation, a line between a position monitoring interface of the second circuit breaker of the second remote automatic backup power switching device and a direct current positive power supply positioned in the second transformer substation is connected.
When the second remote automatic switching device detects the second voltage loss and a switching-on instruction sent by the first remote automatic switching device, a switching-on signal aiming at the second circuit breaker is sent out according to logic actions of the second remote automatic switching device.
The second circuit breaker is a circuit breaker in the second transformer substation, and is used for connecting or disconnecting a second power supply line of the power supply source for supplying power to each device in the second transformer substation. The switching-on signal is used for indicating the second circuit breaker to be communicated with the second power supply line.
And after the second automatic backup power switching logic action testing device detects the switching-on signal, simulating the closing state of the second circuit breaker to the second remote automatic backup power switching device. In some embodiments, the second automatic backup power switching logic action test device closes a line between a position monitoring interface of a second circuit breaker of the second remote automatic backup power switching device and a direct current positive power supply located in the second transformer substation, so that a voltage value detected by the position monitoring interface of the second circuit breaker is at a high level. Accordingly, the second remote automatic backup switching device can confirm that the second circuit breaker is in a closed state, and considers that the power supply source is put into use.
In some embodiments, the second automatic switching logic action test device displays prompt information for indicating that a closing signal sent by the second remote automatic switching device has been received. For example, the second automatic switching logic action test device may display the prompt information on the liquid crystal display. The operator can clearly know whether the second remote automatic switching device makes a correct logic action.
According to some embodiments of the invention, the first spare power automatic switching logic action testing device sends a voltage-losing instruction to the second spare power automatic switching logic action testing device, and the first voltage-losing voltage is delayed to be simulated and output to the first remote spare power automatic switching device, so that the time for the first spare power automatic switching logic action testing device and the second spare power automatic switching logic action testing device to send the first voltage-losing voltage and the second voltage-losing voltage is synchronized, the working condition site when the power supply of the transformer substation fails is accurately simulated, and whether the first remote spare power automatic switching device and the second remote spare power automatic switching device can accurately make logic actions or not can be accurately detected.
Fig. 3 is a block diagram of a first automatic backup power switching logic action test device according to a preferred embodiment of the present invention.
As shown in fig. 3, the automatic switching logic action test device 300 includes: the voltage loss instruction transmission unit 310, the first voltage loss simulation unit 320, the trip signal detection unit 330, the breaker open state simulation unit 340, and the first control unit 350.
The voltage-loss instruction sending unit 310 is configured to send a voltage-loss instruction. The voltage-loss instruction is an instruction for instructing to output a voltage-loss voltage. In some embodiments, the voltage-loss instruction is an instruction that the first automatic backup power switching logic operation test device instructs the second automatic backup power switching logic operation test device to output the second voltage-loss voltage.
In some embodiments, the voltage-loss instruction sending unit 310 may be implemented by a 4G communication module.
The first voltage-loss simulation unit 320 is configured to output a first voltage-loss voltage to a first remote automatic backup power switching device to be tested. In some embodiments, the first voltage loss simulation unit 320 includes a controllable ac air break and relay protection tester. The input end of the controllable alternating current air switch is connected with the voltage output end of the relay protection tester, and the output end of the controllable alternating current air switch is connected with the voltage acquisition interface of the first remote spare power automatic switching device to be tested.
In the initial state, the controllable alternating current air switch is in the on state, the output voltage of the relay protection tester is output to the voltage acquisition interface of the first remote automatic switching device to be tested, and the first remote automatic switching device to be tested considers that the power supply is in the normal state based on the output voltage of the relay protection tester. When the first voltage-loss simulation unit 320 is required to output the voltage-loss voltage, the first control unit 350 outputs a low-voltage control signal to disconnect the controllable ac air-break and simulate the voltage-loss state.
According to the embodiments of the invention, through the cooperation of the controllable alternating current air switch and the relay protection tester, the automatic control spare power automatic switching logic action testing device can output the voltage-losing voltage, the automatic testing of the logic action of the remote spare power automatic switching device is realized, the labor cost is saved, and the error caused by manual operation is avoided.
The trip signal detection unit 330 is configured to detect a trip signal of a first remote automatic backup power switching device to be tested for a first circuit breaker located at a first substation. The trip signal is sent by the first remote spare power automatic switching device according to the first voltage-losing voltage.
In some embodiments, the trip signal detection unit 330 includes an optocoupler relay. The optocoupler relay is connected with an output port of a tripping signal of the first remote automatic switching device to be tested. When the first remote automatic switching device to be tested sends out a tripping signal, a direct-current voltage pulse of 110V to the ground is generated at an output port of the tripping signal, the pulse is received by the optocoupler relay and then converted into a low-voltage pulse signal of 5V to the first control unit 350, and the first control unit 350 confirms that the first remote automatic switching device to be tested sends out the tripping signal according to the low-voltage pulse signal.
The breaker open state simulation unit 340 is configured to disconnect a line between a position monitoring interface of a first breaker of a first remote automatic backup power switching device to be tested and a direct current positive power supply located in a first substation.
In some embodiments, the breaker open state simulation unit 340 includes an electromagnetic relay including a pair of nodes, a first node of the pair of nodes being connected to a dc positive power supply and a second node of the pair of nodes being connected to a position monitoring interface of a first breaker of a first remote automatic backup power switching device to be tested. Disconnecting a line between a position monitoring interface of a first breaker of a first remote automatic switching device to be tested and a direct current positive power supply comprises: the first control unit 350 drives the electromagnetic relay, and disconnects the connection line between the first node and the second node.
The first control unit 350 includes a control chip including, but not limited to: a singlechip, an ARM processor, and the like.
The first automatic switching logic action testing device further comprises a man-machine interaction interface. The human-machine interaction interface may include, but is not limited to: liquid crystal display and key.
In some embodiments, the prompt information such as the trip signal and the like that the first automatic backup power switching logic action testing device has received from the first remote automatic backup power switching device in the testing process can be displayed through the liquid crystal display. The operator can clearly know whether the remote automatic switching device correctly makes logic actions through the human-computer interaction interface.
Fig. 4 is a block diagram of a second automatic backup power switching logic action test device according to a preferred embodiment of the present invention.
As shown in fig. 4, the second automatic switching logic action test device includes: the circuit breaker comprises a voltage loss instruction receiving unit 410, a second voltage loss simulation unit 420, a closing signal detecting unit 430 and a circuit breaker closing state simulation unit 440.
The voltage-loss instruction receiving unit 410 is configured to receive a voltage-loss instruction sent by a first spare power automatic switching logic action testing device located in a first substation. The voltage-loss instruction is an instruction for instructing to output a voltage-loss voltage. In some embodiments, the voltage-loss instruction is an instruction that the first automatic backup power switching logic action test device instructs the second automatic backup power switching logic action test device to output a second voltage-loss voltage. In some embodiments, the voltage-loss instruction receiving unit 410 may be implemented by a 4G communication module.
The second voltage-loss simulation unit 420 is configured to output a second voltage-loss voltage to a second remote automatic backup power switching device to be tested. In some embodiments, the second voltage loss simulation unit 420 includes a controllable ac air break and relay protection tester. The input end of the controllable alternating current idle switch is connected with the voltage output end of the relay protection tester, and the output end of the controllable alternating current idle switch is connected with the voltage acquisition interface of the second remote spare power automatic switching device to be tested.
The closing signal detection unit 430 is configured to detect a closing signal sent by the second remote automatic backup device to be tested and directed against a second circuit breaker located in the second substation. The switching-on signal is sent by the second remote automatic switching device based on the second voltage-losing voltage and a switching-on instruction sent by the first remote automatic switching device.
In some embodiments, the second automatic switching action logic testing device includes a second control unit 450, and the closing signal detecting unit 430 includes an optocoupler relay. The optocoupler relay is connected with an output port of a switching-on signal of the second remote automatic switching device to be tested. When the second remote automatic switching device to be tested sends a switching-on signal, a direct-current voltage pulse of 110V to the ground is generated at an output port of the switching-on signal, the pulse is received by the optocoupler relay and then converted into a low-voltage pulse signal of 5V to the second control unit 450, and the second control unit 450 confirms that the second remote automatic switching device to be tested sends the switching-on signal according to the low-voltage pulse signal.
The circuit breaker closing state simulation unit 440 is configured to close a line between a position monitoring interface of a second circuit breaker of the second remote automatic backup power switching device to be tested and a direct current positive power supply located in the second substation.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (10)
1. A logic action test method of a remote spare power automatic switching device is characterized by comprising the following steps:
After a first backup automatic switching logic action testing device positioned in a first transformer substation sends a voltage-losing instruction for instructing the second backup automatic switching logic action testing device to output a second voltage-losing voltage to a second backup automatic switching logic action testing device positioned in a second transformer substation, outputting the first voltage-losing voltage to a first remote backup automatic switching device positioned in the first transformer substation;
If the first backup power automatic switching logic action testing device detects a tripping signal which is sent by the first remote backup power automatic switching device and is aimed at a first circuit breaker positioned in the first transformer substation, a line between a position monitoring interface of the first circuit breaker of the first remote backup power automatic switching device and a direct current positive power supply positioned in the first transformer substation is disconnected; the trip signal is used for indicating the first circuit breaker to disconnect a first power supply line of the power supply of the first transformer substation for supplying power to each device in the first transformer substation, and the trip signal is sent by the first remote spare power automatic switching device according to the first voltage loss voltage;
After receiving the voltage-losing instruction sent by the first automatic switching logic action testing device, the second automatic switching logic action testing device outputs the second voltage-losing voltage to a second remote automatic switching device;
If the second automatic backup switching logic action testing device detects a switching-on signal which is sent by the second remote automatic backup switching device and is aimed at a second circuit breaker positioned in the second transformer substation, a line between a position monitoring interface of the second circuit breaker of the second remote automatic backup switching device and a direct current positive power supply positioned in the second transformer substation is connected; the switching-on signal is used for indicating the second circuit breaker to be communicated with a power supply of the second transformer substation to supply power to a second power supply line of each device in the second transformer substation, and the switching-on signal is sent by the second remote automatic spare power switching device based on the second voltage loss voltage and a switching-on instruction sent by the first remote automatic spare power switching device.
2. The method of claim 1, wherein the outputting the first voltage-loss voltage by the first automatic-switching logic action test device comprises: the voltage-losing simulation unit of the first spare power automatic switching logic action testing device outputs a first voltage-losing voltage to the voltage acquisition interface of the first remote spare power automatic switching device, and the first remote spare power automatic switching device is instructed to send out the tripping signal according to the first voltage-losing voltage detected by the voltage acquisition interface.
3. The method of claim 1, wherein the outputting the second voltage-loss voltage by the second automatic-switching logic action test device comprises: and the voltage-losing simulation unit of the second automatic switching logic action testing device outputs a second voltage-losing voltage to the voltage acquisition interface of the second remote automatic switching device, and instructs the second remote automatic switching device to send out the closing signal according to the second voltage-losing voltage detected by the voltage acquisition interface.
4. The method according to claim 1, wherein the method further comprises:
the first spare power automatic switching logic action testing device responds to detection of setting operation of an on-site working mode, and the working mode of the first spare power automatic switching logic action testing device is set to be the on-site working mode;
the second automatic switching logic action testing device responds to the detection of the setting operation of the remote working mode, and the working mode of the second automatic switching logic action testing device is set to be the remote working mode.
5. The method according to claim 1, wherein the method further comprises:
the first automatic backup power switching logic action test device displays prompt information for indicating that a tripping signal sent by the first remote automatic backup power switching device is received;
and the second automatic switching logic action testing device displays prompt information for indicating that a closing signal sent by the second remote automatic switching device is received.
6. The first spare power automatic switching logic action testing device is characterized in that the first spare power automatic switching logic action testing device is located in a first transformer substation and comprises:
The step-down instruction sending unit is used for sending a step-down instruction to a second automatic switching logic action testing device positioned in a second transformer substation, wherein the step-down instruction is an instruction for instructing the second automatic switching logic action testing device to output a second step-down voltage;
the first voltage-loss simulation unit is used for outputting a first voltage-loss voltage to a first remote automatic switching device to be tested;
The tripping signal detection unit is used for detecting a tripping signal of the first remote automatic switching device to be tested aiming at a first circuit breaker positioned in the first transformer substation; the tripping signal is sent by the first remote automatic switching device according to the first voltage-losing voltage;
and the breaker disconnection state simulation unit is used for disconnecting a line between a position monitoring interface of a first breaker of the first remote spare power automatic switching device to be tested and a direct current positive power supply of the first transformer substation.
7. The apparatus of claim 6, wherein the first automatic backup power switching logic action test apparatus further comprises a first control unit, the circuit breaker open state simulation unit comprises an electromagnetic relay comprising a node pair, a first node of the node pair being connected to a direct current positive power supply; the second node in the node pair is connected with a position monitoring interface of a first breaker of the first remote automatic switching device to be tested;
the circuit for disconnecting the position monitoring interface of the first breaker of the first remote automatic switching device to be tested and the direct current positive power supply of the first transformer substation comprises:
the first control unit drives the electromagnetic relay to disconnect a connection line between the first node and the second node.
8. The apparatus of claim 6, wherein the trip signal detection unit comprises an optocoupler relay.
9. The apparatus of claim 6, wherein the first loss of voltage analog unit comprises a controllable ac air-break and relay protection tester; the controllable alternating current idle input end is connected with the voltage output end of the relay protection tester, and the controllable alternating current idle output end is connected with the voltage acquisition interface of the first remote spare power automatic switching device.
10. The utility model provides a second spare power automatic switching logic action testing arrangement, its characterized in that, second spare power automatic switching logic action testing arrangement is located the second transformer substation, second spare power automatic switching logic action testing arrangement includes:
the step-down instruction receiving unit is used for receiving a step-down instruction sent by a first automatic backup power switching logic action testing device positioned in a first transformer substation, wherein the step-down instruction is an instruction for the first automatic backup power switching logic action testing device to instruct the second automatic backup power switching logic action testing device to output a second step-down voltage;
The second voltage-loss simulation unit is used for outputting the second voltage-loss voltage to a second remote automatic switching device to be tested;
The switching-on signal detection unit is used for detecting a switching-on signal which is sent by the second remote automatic switching device to be tested and is aimed at a second circuit breaker positioned in the second transformer substation; the switching-on signal is sent by the second remote automatic switching device based on the second voltage-losing voltage and a switching-on instruction sent by the first remote automatic switching device;
and the circuit breaker closing state simulation unit is used for closing a circuit between a position monitoring interface of a second circuit breaker of the second remote spare power automatic switching device to be tested and a direct current positive power supply of the second transformer substation.
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| CN110333410A (en) * | 2019-07-18 | 2019-10-15 | 中国能源建设集团广东火电工程有限公司 | A kind of prepared auto restart test device |
| CN112952984A (en) * | 2021-02-24 | 2021-06-11 | 云谷技术(珠海)有限公司 | Host, device and method for spare power automatic switching |
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| KR100857393B1 (en) * | 2006-12-29 | 2008-09-05 | 엘에스산전 주식회사 | Remote control device and method of air circuit breaker |
| US9606185B2 (en) * | 2013-05-22 | 2017-03-28 | Chang Zhou Current Supply Company Of Jiangsu Electric Power Company | Intelligent calibration system for backup-power automatic switching device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110333410A (en) * | 2019-07-18 | 2019-10-15 | 中国能源建设集团广东火电工程有限公司 | A kind of prepared auto restart test device |
| CN112952984A (en) * | 2021-02-24 | 2021-06-11 | 云谷技术(珠海)有限公司 | Host, device and method for spare power automatic switching |
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