CN104991525A - Electric power automatic control system - Google Patents

Abstract

The invention provides an electric power automatic control system. In this system, the control communication bus is used to realize the communication between the system controller and the field controller; the field controller is used to collect the power system status signal, convert the power system status signal into a signal that the system The bus sends the converted power system status signal to the system controller, receives and executes the control instructions sent by the system controller, and sends the execution results of the control instructions to the system controller; Fault plan table; receive the converted power system status signal sent by the field controller through the control communication bus, send control instructions to the field controller, and receive the execution results of the control instructions sent by the field controller. When the power system fails, According to the anti-fault plan table, automatic control is realized, which provides a reliable guarantee for the continuity of power supply of the power system.

Description

Electric Power Automatic Control System

technical field

The invention relates to an automatic control technology, in particular to an electric power automatic control system.

Background technique

With the rapid development of the IT industry, the demand for building large-scale data centers continues to increase, and the key equipment in large-scale data centers has the characteristics of high power density and high requirements for operation continuity; therefore, the service for key equipment in the data center The low-voltage power system needs to meet the requirements of system safety, reliability, flexibility and maintainability. Therefore, the complexity of the power system is high.

For the traditional data center power system, its system architecture is relatively simple, and the requirements for power supply continuity are relatively low. Therefore, during the operation of the system, if there is an external power failure or system failure, the operation and maintenance personnel will generally judge the operating status and fault information of the system, and then draw an anti-fault plan based on the operating procedures and their own technical experience. Control, manual operation or electric operation, complete anti-fault measures such as switching operation.

For complex low-voltage power systems with high reliability requirements, the above-mentioned traditional operation methods are difficult to meet the needs, mainly in the following aspects: First, the traditional operation methods require high technical level of operation and maintenance personnel, and there are artificial It is difficult to guarantee the safety and reliability of judging the risk of operation errors; second, when a system failure occurs, manual judgment and manual operation take a lot of time, and the operation time of anti-fault measures is too long, resulting in the system switching time exceeding the uninterruptible power supply time , resulting in power interruption; third, for the situation of complex faults, such as two or more faults occurring at the same time or successively, it is difficult for operation and maintenance personnel to judge. Therefore, it is urgent to propose an electric power automatic control system.

Contents of the invention

The invention provides an electric power automatic control system to realize automatic control when a system failure occurs in the power system and provide reliable guarantee for the continuity of power supply of the power system.

The present invention provides an automatic power control system, including at least one automatic power control subsystem; wherein, one of the automatic power control subsystems includes: a control communication bus, a system controller, and a field controller;

The control communication bus is used to realize the communication between the system controller and the field controller;

The on-site controller is used to collect power system status signals, convert the power system status signals into signals recognizable by the system controller, and send the converted power system status signals to the The system controller receives and executes the control instruction sent by the system controller, and sends the execution result of the control instruction to the system controller;

The system controller is used to store an anti-failure plan table including multiple prefabricated scene modes; receive the converted power system status signal sent by the site controller through the control communication bus, and send the converted power system status signal to the site controller sending the control instruction, and receiving the execution result of the control instruction sent by the site controller.

In the automatic power control system as described above, the power system state signal includes at least one of the following: voltage signal, current signal, frequency signal, switch state signal, relay protection action signal, relay protection alarm signal.

The automatic power control system as described above, wherein the system controller is specifically used for:

If the received change of the power system state signal is consistent with the preset trigger condition, compare the change of the power system state signal and the currently detected power system state with the preset The scene modes are compared to obtain the action sequence required to implement the anti-fault plan table; wherein the action sequence is the opening action and/or closing action of the switch in the power system.

A control instruction including the action sequence is generated and sent to the field controller through the control communication bus.

The electric power automatic control system as described above, wherein the on-site controller is specifically used for:

Receive the control instruction including the action sequence, and control the electric operating mechanism corresponding to the switch in the action sequence to perform the corresponding opening action and/or closing action.

The automatic power control system as described above, wherein the system controller is also used for:

According to the power system framework, pre-simulating a plurality of the action sequences that need to be executed under the preset trigger conditions of the power system state;

Recording the preset trigger condition corresponding to a power system state and the action sequence to be executed as an entry in the anti-failure plan table; storing the anti-failure plan table.

The electric power automatic control system as described above, wherein, after the electric operating mechanism corresponding to the switch in the control and action sequence performs the corresponding opening action and/or closing action, the site controller is further used for:

Detecting the power system status signal again to verify whether the action is executed;

If it has been executed, continue to detect the power system status signal until there is a change;

If it is not executed, take the unexecuted switching action as the trigger condition, compare it with the prefabricated scene mode in the anti-failure plan table again, and obtain the action sequence that needs to be executed to realize the anti-failure plan; Send the generated control instruction including the action sequence to the field controller through the control communication bus.

The automatic power control system provided by the present invention includes at least one automatic power control subsystem; wherein, one of the automatic power control subsystems includes: a control communication bus, a system controller, and a field controller; the control communication bus is used to realize the described Communication between the system controller and the on-site controller; the on-site controller is used to collect power system status signals, convert the power system status signals into signals recognizable by the system controller, and pass the control communication The bus sends the converted power system status signal to the system controller, receives and executes the control instruction sent by the system controller, and sends the execution result of the control instruction to the system controller; the system controller uses Store the anti-failure plan table including a plurality of prefabricated scene modes; receive the converted power system status signal sent by the site controller through the control communication bus, and send the control instruction to the site controller , and receive the execution result of the control instruction sent by the site controller. When a fault occurs in the power system, automatic control can be realized according to the anti-fault plan table, which simplifies the work of operation and maintenance personnel, makes the action of the power system fast and accurate, and provides a reliable guarantee for the continuity of the power supply of the power system.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic structural view of Embodiment 1 of the electric power automatic control system of the present invention;

Fig. 2 is a schematic diagram of an actual application scene of the electric power automatic control system of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Fig. 1 is a schematic structural diagram of Embodiment 1 of the electric power automatic control system of the present invention. Referring to Fig. 1, the electric power automatic control system provided by the embodiment of the present invention may include at least one electric power automatic control subsystem; specifically, an electric power automatic control subsystem may include: a control communication bus, a system controller, and a field controller;

The control communication bus is used to realize the communication between the system controller and the field controller;

The on-site controller is used to collect the power system status signal, convert the power system status signal into a signal recognizable by the system controller, send the converted power system status signal to the system controller through the control communication bus, receive and execute the system controller to send control instructions, and send the execution results of the control instructions to the system controller;

The system controller is used to store the anti-failure plan table containing multiple prefabricated scene modes; receive the converted power system status signal sent by the site controller through the control communication bus, send control instructions to the site controller, and receive the signal sent by the site controller Control instruction execution result.

Specifically, the power system state signal may include at least one of the following: voltage signal, current signal, frequency signal, switch state signal, relay protection action signal, relay protection alarm signal; if the converted power received by the system controller If the change of the system status signal is consistent with the preset trigger condition, the converted power system status signal and the currently detected power system status are compared with the prefabricated scene modes in the anti-fault plan table, and the anti-fault The action sequence required by the plan, wherein the action sequence is the opening action and/or closing action of the switch in the power system; generate a control command including the action sequence, and send it to the site controller through the control communication bus.

After the on-site controller receives the control instruction including the action sequence, it controls the electric operating mechanism corresponding to the switch in the action sequence to perform the corresponding opening action and/or closing action, so as to realize the anti-fault plan.

Referring to Figure 1, the system controller can include a power supply module, a communication module and a controller module, wherein the power supply module is used to provide available power for the system controller, and the communication module is used to exchange information with the field controller, which includes a communication interface The function of the gateway, the controller module is used to store the anti-failure plan table containing multiple prefabricated scene modes. If the power system status signal changes, and the change is consistent with the preset trigger condition, the controller module can 1. Compare the power system state corresponding to the power system state signal with the prefabricated scene mode in the anti-fault plan table, obtain the action sequence required to implement the anti-fault plan, generate and issue control instructions containing the action sequence, so that on-site control The controller controls the switching action of the power system according to the action sequence; after the controller module sends out the control command, it can also obtain the execution result of the control command sent by the on-site controller.

The field controller can include a power supply module, a communication module, an input unit, an output unit and a controller module. The power supply module is used to provide available electric energy for the field controller; the communication module is used to exchange information with the system controller, which includes Communication interface gateway function; the input unit is used to collect power system status signals, including voltage signals, current signals, frequency signals, switch status signals, such as switch opening and closing, maintenance, tripping position, fault signals, such as through the relay of the power system The relay protection signals such as loss of voltage, overvoltage, overcurrent long delay, overcurrent short delay, overcurrent quick break, arc light and differential obtained by the protection device; the output unit is used for the control of the controller module according to the control command , to send instructions that can be recognized by the control object to the control object, and execute the switching action; the controller module is used to process the power system status signal collected by the input unit, convert the power system status signal into a signal that can be recognized by the system controller, and pass The control communication bus is uploaded to the system controller, and at the same time, the output unit can be controlled to execute the instructions according to the control instructions of the system controller.

Further, as shown in Figure 1, the electric power automatic control system may also include a management communication bus and a management device; the management communication bus is used to realize the communication between the management device and the system controller; the management device is used to receive the system controller through the management The power system status and alarm signals sent by the communication bus receive power system status query instructions, process and display the power system status.

In practical applications, the main functions of the management equipment may include: according to the obtained power system status signal, information such as voltage, current, frequency, switch status, and fault conditions of the power distribution equipment, combined with the pre-input power system framework, are made into real-time Visualized power system architecture diagram; record voltage, current, frequency and other data of power distribution equipment, and convert the data into time-amplitude curves, and display them on the visual man-machine interface; The fault situation is displayed on the man-machine interface, and when the anti-fault processing is performed, the screen displayed on the man-machine interface is directly switched to the fault site, and the situation of the fault site is monitored, and it can be displayed intuitively on the man-machine interface at the same time The process and steps of the current fault handling, and further, an alarm window with a voice alarm function can be automatically launched to provide fault prompts; instructions can also be input through the man-machine interface. It should be noted that, according to the needs of users, a monitoring terminal can also be set to realize the above functions.

Both the control communication bus and the management communication bus can use the Transmission Control Protocol/Internet Protocol (Transmission Control Protocol/Internet Protocol, TCP/IP) bus, or the building automation control network data communication protocol (A Data Communication Protocol for Building Automation and Control Networks/ IP, BACnet/IP) bus, or MODBUS/TCP bus; or Profibus, BACnet/RS485, Lonwork, MODBUS/RS485, Controller Area Network (CAN), Electrical Installation Bus (Electrical Installation Bus, EIB), etc. A standardized bus or protocol standard, which is not limited in this embodiment.

Considering that in practical applications, there are requirements for fault tolerance and online maintenance of the automatic power control system, the above-mentioned automatic power control system in this embodiment may include two automatic power control subsystems, one of which is The main power automatic control subsystem, and the other power automatic control subsystems are redundant power automatic control subsystems; the redundant power automatic control subsystem is used to realize the control of the power system when the residential power automatic control subsystem fails, so that To meet the system fault tolerance and online maintenance requirements of the automatic power control system, it is understandable that in some feasible implementation methods, according to actual needs, all or part of the management communication bus or part of the redundant automatic power control subsystem can also be removed. Control the communication bus to simplify the system structure.

On the basis of the above-mentioned embodiment, with reference to FIG. 2 , the anti-failure plan table stored by the system controller of this embodiment is described by taking three prefabricated scene modes as examples.

First, the actual application scenario of the embodiment of the present invention is described. Referring to Figure 2, in the actual application scenario shown in Figure 2, the power system includes two mains lines, two diesel generators, two busbars, and two tie switches. Table 1 gives the coding rules of the switches and buses in Figure 2, as shown in Table 1:

Table I

Among them, the high-voltage 10kV bus is divided into single bus sections, the contact switch is usually opened, and the two sections of the bus are operated separately. The two sections of the bus are powered by two mains respectively. When the mains power fails, a 10kV diesel generator set is used as a backup power supply.

It should be noted that the purpose of setting the two tie switches 2AB and 2AB' is to enable the system to realize the planned online maintenance function. That is: when the tie switch 2AB fails, the switch on the power supply side of the 2AB direct connection bus and the other tie switch 2AB' can be disconnected; without affecting the power supply of the other bus 2B#, a planned online maintenance function can be realized. In order to simplify the system control logic, only 2AB is automatically controlled; 2AB' is usually closed and combined, which adopts manual control and does not participate in automatic control; diesel engine startup adopts automatic control, and diesel engine shutdown adopts automatic control delay shutdown or manual Control mode; power incoming switch, feeder switch set voltage-loss tripping relay protection.

By analyzing the possible system architecture of the power system, the possible state of the power system can be obtained. For the user's power system, its faults include internal faults of the power system and external faults of the power system; among them, when the external fault of the power system fails, the electrical system of the user's mains power supply side fails, causing a power outage at the user side; the internal faults of the power system can include: overload, overcurrent , over-voltage, under-voltage, arc protection, zero-sequence protection, etc., the relay protection system can protect and command the switch to respond to the corresponding faults, including switch refusal, switch stealth trip, switch refusal to cause leapfrog tripping, etc. Electrical equipment faults need to be solved at the level of the power system architecture because the relay protection system cannot handle these faults perfectly.

In this embodiment, the external faults of the power system and the internal faults of the power system can be used as trigger conditions, which are simulated in the user's power system in advance, and when a certain system status is obtained, the action sequence that should be taken by the power system corresponding to a certain trigger condition, a kind of As a prefabricated scene mode, the situation is organized into tables to obtain the anti-fault plan table, and then the anti-fault plan table is stored in the system controller. When the trigger condition is met, the real-time obtained power system The state is compared with the action sequence in the anti-failure plan table to obtain the corresponding execution action sequence, and then execute the action sequence; and after executing the action sequence, check the power system status signal again to verify whether the action has been executed; if it has been executed, Then continue to detect the power system status signal until there is a change; if it is not executed, then use the unexecuted switching action as the trigger condition, compare it with the prefabricated scene mode in the anti-failure plan table again, and achieve The sequence of actions required to be executed in the anti-failure plan; the generated control command including the sequence of actions is sent to the field controller through the control communication bus; thereby realizing the automatic control of the power system.

The prefabricated scene mode is illustrated with an example in conjunction with FIG. 2 . Understandably, the pre-made scene modes described below do not cover all possible scene modes.

Prefabricated scene mode 1 is a power failure of mains 1. When no fault occurs in the power system, its initial operation mode is M1: S201h-F201f-2AKh-2ABf-S202h-F202f-2BKh; the trigger condition of prefabricated scene mode 1 is an external fault of the power system, that is, the detection of S201 switch incoming line The current and voltage at the terminal are lower than the set value; the response of the power system at this time is that the S201 loss of voltage trip action trips, the 2A# bus loses power, and the 2AK loss of voltage trip action trips, that is, the operation mode of the power system changes. M1': S201f-F201f-2AKf-2ABf-S202h-F202f-2BKh; Comparing M1 with M1', the obtained action sequence is 2AB closing operation, 2AK closing operation, feeder switch delay sequence closing; execute operation The operation mode of the rear power system is M3: S201f-F201f-2AKh-2ABh-S202h-F202f-2BKh.

If the mains 1 power supply is restored after a power outage, at this time it is detected that the voltage at the incoming terminal of the S201 switch continues to be normal, the action sequence AB opening operation, 2S01 closing operation, 2AK closing operation, and the feeder switch closing in sequence with delay , switch the operating mode of the power system to M1.

If in the process of switching the operation mode of the power system to M1, 2AB fails to close, and it is detected that a close signal has been sent to 2AB, but 2AB has not performed a close operation, then execute the action sequence to send a start command to the diesel generator system , after detecting that the voltage at the upper port of the F201 switch is normal, F201 performs closing operation, 2AK closing operation, the feeder switch is closed in a delayed sequence, and the operation mode of the power system is switched to S201f-F201h-2AKh-2ABf-S202h-F202f-2BKh .

If in the process of switching the operation mode of the power system to M1, after 2AB is switched on, 2AB' stealthily trips and disconnects, and it is detected that 2AB' trips and disconnects, but the relay protection does not issue an action request, then execute the action sequence to send diesel oil to the diesel engine. The generator system sends a start command, and after detecting that the voltage at the upper port of the F201 switch is normal, F201 performs closing operation, 2AK closing operation, and the feeder switch is closed sequentially with a delay, and the operation mode of the power system is switched to S201f-F201h-2AKh-2ABf -S202h-F202f-2BKh.

If after the operation mode of the power system is switched to M3, the 2B# bus fails, and at this time the 2B# bus fails, such as a short circuit causes the arc protection action of the bus, and it is detected that the S202 relay protection action trips; the 2BK relay protection action trips; 2AB' relay protection action tripping; 2AK loss-of-voltage tripping action tripping; then execute the action sequence: AB opening operation, send start command to the diesel generator system, after detecting that the voltage at the upper port of F201 switch is normal, F201 performs closing operation , 2AK performs the closing operation, the feeder switch is closed sequentially with a delay, and the operation mode of the power system is switched to M11: S201f-F201h-2AKh-2ABh-S202f-F202f-2BKf.

If after the operation mode of the power system is switched to M3, the S202 relay protection action trips, and at this time S202 sends a trip signal, and it is detected that the S202 relay protection action trips; 2AK loss of voltage tripping action trips; 2BK loss of voltage tripping action trip; then execute the action sequence: 2AB opening operation, send start command to the diesel generator system, after detecting that the voltage at the upper port of F201 switch is normal, F201 performs closing operation, 2AK closing operation, the feeder switch is closed in sequence with delay, and the The operating mode of the power system is switched to M11: S201f-F201h-2AKh-2ABh-S202f-F202f-2BKf.

If after the operation mode of the power system is switched to M3, because the 2BK feeder switch refuses to move, the relay protection trips to the S202 switch, at this time, 2BK sends out a stop signal; S202 sends out a trip signal, and it is detected that the S202 relay protection action trips ; 2AK loses voltage trip action trips; 2BK loses voltage trip action trips; then executes the action sequence: 2AB conducts the opening operation, sends a start command to the diesel generator system, and after detecting that the voltage at the upper port of the F201 switch is normal, F201 closes the switch Operation, 2AK performs the closing operation, the feeder switch is closed sequentially with a delay, and the operation mode of the power system is switched to M11: S201f-F201h-2AKh-2ABh-S202f-F202f-2BKf.

Prefabricated scene mode 2 is a power outage of mains 1, and after the power system switches to operation mode M3, a power outage of mains 2 occurs. When there is no power failure in mains 2, the initial operation mode of the power system is M3: S201f-F201f-2AKh-2ABh-S202h-F202f-2BKh; the trigger condition of prefabricated scene mode 2 is the external fault of the power system, that is, the detection of S201 The current and voltage of the switch inlet terminal are lower than the set value, and it is detected that the current and voltage of the S202 switch inlet terminal are lower than the set value; the reaction of the power system at this time is that both S201 and S202 lose voltage and trip. , both 2A# and 2B# lose power to the busbar, and both 2AK and 2BK lose voltage and trip, that is, the operation mode of the power system changes to M3' at this time: S201f-F201f-2AKf-2ABh-S202f-F202f-2BKf; Comparing M3 with M3', the action sequence obtained is to send a start command to the diesel generator system, and after detecting that the voltage at the upper port of the F201 and F202 switches is normal, the contact switch 2AB is opened, F201 and F202 are closed, and 2AK is closed Operation, 2BK closing operation, delay sequence closing of the feeder switch; the operating mode of the power system after the operation is: S201f-F201h-2AKh-2ABf-S202f-F202h-2BKh.

If the mains 2 resumes power supply after both mains power failures, at this time, it is detected that the voltage of the incoming terminal of the S202 switch continues to be normal, then execute the action sequence F202 to perform the opening operation (2BK loss of voltage tripping), and S202 to close the switch Operation, 2BK performs closing operation, F201 performs opening operation (2AK loses voltage trip trip), contact switch 2AB closes operation, 2AK performs closing operation, and switches the operation mode of the power system to M3.

If after the operation mode of the power system is switched to M3, there is a power failure of mains 2, or 2AB opening failure occurs in the prefabricated scene mode 2, it is detected that a start command has been sent to the diesel generator system, and the F201 and F201 switches are detected. After the voltage is normal, issue the 2AB opening command and detect the 2AB opening failure signal; then execute the action sequence: F201 performs the closing operation, 2AK performs the closing operation, 2BK performs the closing operation, the feeder switch is closed in sequence with delay, and the The operating mode of the power system is switched to: S201f-F201h-2AKh-2ABh-S202f-F202h-2BKh.

If after the operation mode of the power system is switched to M3, there is a power failure of mains 2, or in prefabricated scene mode 2, the voltage at the upper port of the F201 switch is normal, but the voltage at the upper port of the F202 switch is abnormal, and it is detected that the diesel generator system has Send start command. Detect that the voltage at the upper port of the F201 switch is normal, but the voltage at the upper port of the F202 switch is abnormal; then execute the action sequence: F201 performs the closing operation, 2AK performs the closing operation, 2BK performs the closing operation, the feeder switch is closed in sequence with delay, and the power The operating mode of the system is switched to: S201f-F201h-2AKh-2ABh-S202f-F202h-2BKh.

If after the operation mode of the power system is switched to M3, there is a power outage of mains 2, or in the prefabricated scene mode 2, F201 closes complete, but F202 fails to close, it is detected that the close signal has been sent to F202, but F202 has not Perform the closing operation; then execute the sequence of actions: 2AB performs the closing operation, 2AK performs the closing operation, 2BK performs the closing operation, the feeder switch is closed in sequence with delay, and the operation mode of the power system is switched to: S201f-F201h-2AKh -2ABh-S202f-F202h-2BKh.

If after the operation mode of the power system is switched to M3, there is a power failure of mains 2, or in prefabricated scene mode 2, the voltage of the upper port of the F202 switch is normal, but the voltage of the upper port of the F201 switch is abnormal, and the diesel generator system is detected Send start command. Detect that the voltage at the upper port of the F202 switch is normal, but the voltage at the upper port of the F201 switch is abnormal; then execute the action sequence: F202 performs the closing operation, 2AK performs the closing operation, 2BK performs the closing operation, the feeder switch is closed in sequence with delay, and the power The operating mode of the system is switched to: S201f-F201f-2AKh-2ABh-S202f-F202h-2BKh.

If after the operation mode of the power system is switched to M3, there is a power failure of mains 2, or in prefabricated scene mode 2, F202 closes complete, but F201 fails to close, it is detected that the close signal has been sent to F201, but F201 has not Perform the closing operation; then execute the sequence of actions: 2AB performs the closing operation, 2AK performs the closing operation, 2BK performs the closing operation, the feeder switch is closed in sequence with delay, and the operation mode of the power system is switched to: S201f-F201f-2AKh -2ABh-S202f-F202h-2BKh.

Prefabricated scene mode 3 is that Mains 1 and Mains 2 are powered off at the same time. When no fault occurs in the power system, its initial operation mode is M1: S201h-F201f-2AKh-2ABf-S202h-F202f-2BKh; the trigger condition of the prefabricated scene mode 3 is an external fault of the power system, that is, the detection of the S201 switch incoming line The current and voltage of the terminal are lower than the set value, and it is detected that the current and voltage of the incoming terminal of the S202 switch are lower than the set value; the reaction of the power system at this time is that the S201 loses voltage trip action trips, and the 2A# bus loses power , 2AK loss of voltage trip action trip, that is, at this time, the operating mode of the power system becomes M1": S201f-F201f-2AKf-2ABf-S202f-F202f-2BKf; compare M1 with M1", and obtain the action sequence as The diesel generator system sends a start command, and after detecting that the voltages at the upper ports of F201 and F202 switches are normal, both F201 and F202 perform closing operations, 2AK performs closing operations, 2BK performs closing operations, and the feeder switches are closed in sequence with delay; The operating mode of the power system after operation is M3: S201f-F201f-2AKh-2ABh-S202h-F202f-2BKh.

The electric power automatic control system of this embodiment includes at least one electric power automatic control subsystem; wherein, one electric power automatic control subsystem includes: a control communication bus, a system controller and a field controller; the control communication bus is used to realize the system controller and Communication between on-site controllers; the on-site controller is used to collect power system status signals, convert the power system status signals into signals recognizable by the system controller, and send the converted power system status signals to the system controller through the control communication bus , receive and execute the control instructions sent by the system controller, and send the execution results of the control instructions to the system controller; the system controller is used to store the anti-failure plan table containing multiple prefabricated scene modes; receive the information sent by the field controller through the control communication bus The converted power system status signal sends control instructions to the on-site controller and receives the execution results of the control instructions sent by the on-site controller. When a fault occurs in the power system, automatic control can be realized according to the anti-fault plan table, which simplifies operation and maintenance. The work of personnel makes the power system move quickly and accurately, and provides a reliable guarantee for the continuity of power supply of the power system.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (6)

1. An electric power automatic control system, characterized in that it includes at least one electric power automatic control subsystem; wherein, one of the electric power automatic control subsystems includes: a control communication bus, a system controller and a field controller; The control communication bus is used to realize the communication between the system controller and the field controller; The on-site controller is used to collect power system status signals, convert the power system status signals into signals recognizable by the system controller, and send the converted power system status signals to the The system controller receives and executes the control instruction sent by the system controller, and sends the execution result of the control instruction to the system controller; The system controller is used to store an anti-failure plan table including multiple prefabricated scene modes; receive the converted power system status signal sent by the site controller through the control communication bus, and send the converted power system status signal to the site controller sending the control instruction, and receiving the execution result of the control instruction sent by the site controller. 2. The electric power automatic control system according to claim 1, wherein the power system state signal includes at least one of the following: voltage signal, current signal, frequency signal, switch state signal, relay protection action signal, relay Electrical protection alarm signal. 3. The electric power automatic control system according to claim 2, wherein the system controller is specifically used for: If the received change of the power system state signal is consistent with the preset trigger condition, then compare the change of the power system state signal and the currently detected power system state with the Prefabricated scene modes are compared to obtain the action sequence required to implement the anti-fault plan; wherein, the action sequence is the opening action and/or closing action of the switch in the power system; A control instruction including the action sequence is generated and sent to the field controller through the control communication bus. 4. The electric power automatic control system according to claim 3, wherein the on-site controller is specifically used for: Receive the control instruction including the action sequence, and control the electric operating mechanism corresponding to the switch in the action sequence to perform the corresponding opening action and/or closing action. 5. The electric power automatic control system according to any one of claims 1-4, wherein the system controller is also used for: According to the power system framework, pre-simulating a plurality of the action sequences that need to be executed under the preset trigger conditions of the power system state; Recording the preset trigger condition corresponding to a power system state and the action sequence to be executed as an entry in the anti-failure plan table; storing the anti-failure plan table. 6. The electric power automatic control system according to claim 4, characterized in that, after the electric operating mechanism corresponding to the switch in the control and action sequence performs the corresponding opening action and/or closing action, the on-site The controller is also used to: Detecting the power system status signal again to verify whether the action is executed; If it has been executed, continue to detect the power system status signal until there is a change; If it is not executed, take the unexecuted switching action as the trigger condition, compare it with the prefabricated scene mode in the anti-failure plan table again, and obtain the action sequence that needs to be executed to realize the anti-failure plan; Send the generated control instruction including the action sequence to the field controller through the control communication bus.