Power system, power system control method and device, and storage medium

Abstract

The invention relates to the field of electric power systems, and discloses an electric power system, an electric power system control method, equipment and a storage medium, the electric power system comprises a plurality of transformer substations, each transformer substation comprises at least two voltage levels, and each transformer substation is electrically connected with a main loop; each acquisition switch unit is electrically connected with the corresponding transformer substation, and the acquisition switch units are used for controlling connection and disconnection between the transformer substations and the main loop and acquiring power operation information of the transformer substations; and the core operation unit is in communication connection with each acquisition switch unit, and the core operation unit is used for acquiring the power operation information acquired by each acquisition switch unit and controlling the acquisition switch unit to connect or disconnect the corresponding transformer substation and the main loop according to the power operation information. According to the power system provided by the embodiment of the invention, a data acquisition function and a switching function are integrated into the acquisition switch unit, so that the cost of the power system is reduced, the control structure is simplified, and the communication delay is reduced.

Description

Technical Field

[0001] The present invention relates to the field of power systems, and in particular to a power system, a power system control method, a device and a storage medium. Background Art

[0002] In industrial production, it is necessary to establish a power control system to realize rapid automatic control of substation equipment in the factory to ensure the safe and stable operation of the power grid. However, in the existing enterprise power grid, relay protection devices and data acquisition devices are usually installed at each substation to perform on-off control and data acquisition between the substation and the power grid, which is costly.

[0003] The existing enterprise power grid usually adopts a three-level control structure, that is, the control master station controls the control substation at the substation with higher voltage, and each control substation controls the execution station at the substation with lower voltage. This control structure has high communication delay and cannot meet the needs of rapid response and fault interruption. In addition, the control master station, control substation and execution station are connected through the proprietary protocol of the system manufacturer, which is not expandable enough. Summary of the invention

[0004] Embodiments of the present invention provide a power system, a power system control method, a device, and a storage medium to solve at least one of the above problems.

[0005] In a first aspect, an embodiment of the present invention provides a power system, comprising: a plurality of substations, the plurality of substations comprising at least two voltage levels, each substation being electrically connected to a main circuit; a plurality of collection switch units, each collection switch unit being electrically connected to a corresponding substation, the collection switch unit being used to control the on-off connection between the substation and the main circuit, and to collect power operation information of the substation; a core computing unit, the core computing unit being communicatively connected to each collection switch unit, the core computing unit being used to obtain the power operation information collected by each collection switch unit, and controlling the collection switch unit to connect or disconnect the corresponding substation to the main circuit according to the power operation information.

[0006] The power system provided by the embodiment of the present invention sets a corresponding data collection switch unit at each substation, and communicates with each data collection switch unit to connect the core computing unit, so that the core computing unit can directly obtain the power operation information of the corresponding substation through the data collection switch unit, and judge whether the corresponding substation is faulty according to the power operation information and cut off the fault in time. By integrating the data collection function and the switch function into the data collection switch unit, the cost of the power system is reduced, and by directly connecting the data collection switch unit with the core computing unit, the control structure is simplified and the communication delay is reduced, so as to achieve rapid cut-off when the substation fails and ensure the safe and stable operation of the power grid.

[0007] Optionally, each acquisition switch unit is communicatively connected to the core computing unit via an IEC 61850 communication protocol.

[0008] Optionally, each acquisition switch unit is connected to the core computing unit in the same communication network via the IEC 61850 communication protocol, and each acquisition switch unit in the communication network is directly connected to the core computing unit.

[0009] In a second aspect, an embodiment of the present invention provides a power system control method, which is used to control the connection and disconnection of substations of multiple different voltage levels and a main circuit. The power system control method includes: obtaining power operation information of each substation; based on the power operation information, determining whether the corresponding substation has a fault; and in the state of a substation fault, controlling the corresponding substation to be disconnected from the main circuit.

[0010] The power system control method provided by the embodiment of the present invention can directly obtain the power operation information of multiple substations with different voltage levels, and determine whether the corresponding substation has a fault based on the power operation information of each substation, and disconnect the faulty substation from the main circuit. The power system control method provided by the embodiment of the present invention simplifies the control logic and reduces the communication delay, so as to achieve rapid disconnection when a substation fails and ensure the safe and stable operation of the power grid.

[0011] Optionally, the step of acquiring the power operation information of each substation includes: acquiring the power operation information of each substation based on the IEC 61850 communication protocol.

[0012] Optionally, based on the power operation information, the step of determining whether the corresponding substation has a fault includes: based on the power operation information, obtaining the operating parameters of the corresponding substation; comparing the operating parameters with a preset threshold range, if the operating parameters are not within the preset threshold range, then the corresponding substation has a fault.

[0013] Optionally, when a substation fails, the step of controlling the corresponding substation to be disconnected from the main circuit includes: when a substation fails, generating a control instruction based on the IEC 61850 communication protocol to control the corresponding substation to be disconnected from the main circuit.

[0014] Optionally, the power operation information includes current information, voltage information, frequency information, power factor, phase information, and harmonic information of the corresponding substation.

[0015] In a third aspect, an embodiment of the present invention provides a power system control device, comprising: a processor and a memory, wherein instructions are stored in the memory; the processor calls the instructions in the memory so that the processor executes the power system control method of any of the aforementioned embodiments of the second aspect of the present invention.

[0016] The processor of the power system control device provided by the embodiment of the present invention executes the power system control method of any of the aforementioned embodiments of the second aspect of the present invention by calling the instructions in the memory. It can directly obtain the power operation information of substations of multiple different voltage levels, and judge whether the corresponding substation has a fault based on the power operation information of each substation, and disconnect the faulty substation from the main circuit, thereby simplifying the control logic and reducing the communication delay, so as to achieve rapid disconnection in the event of a substation fault and ensure the safe and stable operation of the power grid.

[0017] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, in which instructions are stored, and when the instructions are executed by a processor, the power system control method of any of the aforementioned embodiments of the second aspect of the present invention is implemented.

[0018] The instructions stored in the computer-readable storage medium provided in the embodiment of the present invention can be called by the processor and execute the power system control method of any of the aforementioned embodiments of the second aspect of the present invention, so as to directly obtain the power operation information of substations of multiple different voltage levels, and judge whether the corresponding substation has a fault based on the power operation information of each substation, and disconnect the faulty substation from the main circuit, thereby simplifying the control logic and reducing the communication delay, so as to achieve rapid disconnection in the event of a substation fault and ensure the safe and stable operation of the power grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the structure of an embodiment of the power system of the present invention;

[0021] Figure 2 It is a structural schematic diagram of a power system in the prior art;

[0022] Figure 3 A schematic diagram comparing an automatic control process of an embodiment of a power system of the present invention with an automatic control process of a power system in the prior art;

[0023] Figure 4 A flow chart of an embodiment of a power system control method of the present invention;

[0024] Figure 5A flowchart of step S120 in an embodiment of the power system control method of the present invention;

[0025] Figure 6 The present invention is a structural block diagram of an embodiment of the power system control device of the present invention.

[0026] Description of Figure Numbers:

[0027] 100- Power system;

[0028] 110-substation; 120-collection switch unit; 130-core computing unit; 140-communication network;

[0029] 201 - processor; 202 - memory; 203 - communication interface; 204 - bus. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that all directional indications such as up, down, left, right, front, back, etc. in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] Figure 1 A schematic diagram of the structure of an embodiment of the power system of the present invention; Figure 2 It is a structural schematic diagram of a power system in the prior art; Figure 3The figure is a schematic diagram comparing the automatic control process of an embodiment of the power system of the present invention with the automatic control process of the power system in the prior art. In the embodiment of the present invention, the power system 100 includes: a plurality of substations 110, a plurality of acquisition switch units 120 and a core computing unit 130.

[0034] The plurality of substations 110 include at least two voltage levels, and each substation 110 is electrically connected to the main circuit. The plurality of data acquisition switch units 120, each of which is electrically connected to the corresponding substation 110, is used to control the on-off of the substation 110 and the main circuit, and to collect the power operation information of the substation 110.

[0035] The core computing unit 130 is in communication connection with each acquisition switch unit 120 . The core computing unit 130 is used to obtain the power operation information collected by each acquisition switch unit 120 , and control the acquisition switch unit 120 to connect or disconnect the corresponding substation 110 with the main circuit according to the power operation information.

[0036] like Figure 2 As shown, in the power system of the prior art, all substations are monitored and controlled by the control master station, and substations of different voltage levels are located at different communication levels. For example, the control master station directly communicates with the control substation of the 110kv voltage level substation through the manufacturer's private protocol, and for the 10kv substation, the power operation information of the substation is collected through the execution station, and the execution station is communicated with the control substation of the upper level through the manufacturer's private protocol, realizing a multi-level communication network structure.

[0037] In the power system of the prior art, since the control main station responsible for processing power operation information and issuing instructions is not directly connected to the execution station, but is indirectly controlled through the control substation, when the control main station issues instructions to a 10kv substation or a substation of a lower level, the instruction information needs to pass through one or more levels of control substations before it can be transmitted to the target substation, resulting in a significant increase in communication delays and the inability to effectively achieve rapid automatic control of the enterprise power grid.

[0038] In the embodiment of the present invention, the power operation information of each substation 110 is collected through the corresponding collection switch unit 120, and the core operation unit 130 monitors each substation 110 through the collection switch unit 120. When a substation 110 fails, the core operation unit 130 can issue instructions to the corresponding collection switch unit 120 in a timely manner according to the received power operation information, so that the collection switch unit 120 is actuated to disconnect the faulty substation 110 from the main circuit to ensure the normal operation of the power system 100. The communication network 140 between the substation 110 and the core operation unit 130 in this embodiment is a flat structure to simplify the structure of the communication network 140 and reduce communication delays. At the same time, the data collection function and the relay protection function are integrated in the collection switch unit 120 to reduce the cost of the power system 100.

[0039] Specifically, the power operation information includes the current information, voltage information, frequency information, power factor, phase information, and harmonic information of the corresponding substation 110. The acquisition switch unit 120 is an IED (Intelligent Electronic Device) device, and the core computing unit 130 can be an electronic device including a central processing unit (CPU) and / or a graphics processing unit (GPU), or a microcontroller unit (MCU) or a microprocessor (MPU), or a programmable logic controller (PLC), etc.

[0040] In the embodiment of the present invention, by setting a corresponding data collection switch unit 120 at each substation 110, and communicating with each data collection switch unit 120 and the core computing unit 130, the core computing unit 130 can directly obtain the power operation information of the corresponding substation 110 through the data collection switch unit 120, and judge whether the corresponding substation 110 is faulty according to the power operation information and cut off the fault in time. By integrating the data collection function and the switch function into the data collection switch unit 120, the cost of the power system 100 is reduced, and by directly connecting the data collection switch unit 120 and the core computing unit 130, the control structure is simplified and the communication delay is reduced, so as to achieve rapid cut-off when the substation 110 fails and ensure the safe and stable operation of the power grid.

[0041] In some embodiments, each acquisition switch unit 120 is communicatively connected to the core computing unit 130 via the IEC 61850 communication protocol.

[0042] In this embodiment, the control main station of the power system in the prior art communicates with the control substation of the 110kv voltage level substation and the execution station of the next level 10kv substation through the manufacturer's private protocol. Due to the limitations of the manufacturer's private protocol, the isolation of the power system increases and its scalability is limited, making it impossible to expand more control functions in the later use process.

[0043] The data collection switch unit 120 and the core computing unit 130 in the power system 100 in the embodiment of the present application are connected through the IEC 61850 communication protocol, which avoids the closedness problem of the private protocol, improves the compatibility of the power system 100, and facilitates subsequent access to other power equipment to expand more control functions.

[0044] In some embodiments, each acquisition switch unit 120 is connected to the core computing unit 130 in the same communication network 140 via the IEC 61850 communication protocol, and each acquisition switch unit 120 in the communication network 140 is directly connected to the core computing unit 130 .

[0045] In this embodiment, each acquisition switch unit 120 is directly connected to the core computing unit 130 via the communication network 140, which greatly reduces the communication delay.

[0046] When a fault occurs in any substation 110, the core computing unit 130 can directly obtain the power operation information of the faulty substation 110 and send instructions to it to control the faulty substation 110 to disconnect from the main circuit in time to ensure the safety and stability of the power system 100 and prevent the faulty substation 110 from affecting the normal operation of the power system 100.

[0047] like Figure 3 As shown, specifically, the IEC 61850 communication protocol of the present application is the IEC 61850-GOOSE communication protocol, and the whole set of action time of the power system 100 of the embodiment of the present invention consists of five parts:

[0048] T1: the time from the occurrence of a fault to the event triggering of the acquisition switch unit 120, which is generally about 5 ms.

[0049] T2: The transmission time required from the acquisition switch unit 120 to the core computing unit 130 via the communication network 140 through the IEC 61850 communication protocol, which is generally 5ms to 20ms.

[0050] T3: the processing time of the core computing unit 130 for the received power operation information, which is generally 10 ms to 20 ms.

[0051] T4: The transmission time required for the core computing unit 130 to send the instruction to the acquisition switch unit 120 via the communication network 140 through the IEC 61850 communication protocol, which is generally 5ms to 20ms.

[0052] T5: The time required for collecting the output signal of the switch unit 120 from being output to cutting off the connection between the faulty substation 110 and the main circuit, which is generally about 5 ms.

[0053] In the power system in the prior art, after a fault occurs, the circuit breaker must first be actuated, and then the control main station in the existing power system must wait for the effective reaction time and the time to issue an instruction to control the circuit breaker to actuate before the faulty substation can be disconnected from the main circuit. That is, the power system in the prior art requires 150ms to 200ms to disconnect the faulty substation from the main circuit. Compared with the power system in the prior art, the power system 100 in the embodiment of the present application only takes 30ms to 70ms to disconnect the faulty substation 110 from the main circuit. By reducing the communication delay, the reaction time to the faulty substation 110 is greatly shortened, the reaction speed of the power system 100 when a fault occurs is improved, and it is ensured that the substation 110 in the power system 100 can be disconnected in time when a fault occurs.

[0054] The present invention also provides a power system control method for controlling the on-off of a plurality of substations with different voltage levels and a main circuit.

[0055] For ease of understanding, the power system control method of an embodiment of the present invention is described below. Figure 4 As shown, the power system control method in the embodiment of the present invention includes steps S110 to S130.

[0056] In step S110, the power operation information of each substation is obtained.

[0057] In some optional embodiments, the power operation information of each substation is obtained based on the IEC 61850 communication protocol.

[0058] In this embodiment, the power operation information includes current information, voltage information, frequency information, power factor, phase information, and harmonic information of the corresponding substation.

[0059] In step S120, based on the power operation information, it is determined whether a corresponding substation has a fault.

[0060] like Figure 5 As shown, in some optional embodiments, step S120 includes steps S121 to S122.

[0061] In step S121, based on the power operation information, the operation parameters of the corresponding substation are obtained.

[0062] In step S122, the operating parameter is compared with a preset threshold range. If the operating parameter is not within the preset threshold range, a corresponding substation fails.

[0063] In this embodiment, based on the power operation information, the current information, voltage information, frequency information, power factor, phase information, and harmonic information of the corresponding substation are obtained and compared with the preset threshold range. If it is within the preset threshold range, no fault has occurred. If it is outside the preset threshold range, a fault has occurred and the cut-off action is initiated to disconnect the faulty substation from the main circuit.

[0064] In step S130, when a substation fails, the corresponding substation is controlled to be disconnected from the main circuit.

[0065] In some optional embodiments, when a substation fails, a control instruction is generated based on the IEC 61850 communication protocol to control the corresponding substation to be disconnected from the main circuit.

[0066] In this embodiment, the IEC 61850 communication protocol is a standard communication protocol. Through the IEC 61850 communication protocol, the closedness problem of the private protocol is avoided, the compatibility of the power system is improved, and it is convenient for subsequent access to other power equipment to expand more control functions.

[0067] The power system control method provided by the embodiment of the present invention includes: obtaining power operation information of each substation; judging whether the corresponding substation has a fault based on the power operation information; and controlling the corresponding substation to be disconnected from the main circuit when a substation has a fault.

[0068] The power system control method provided by the embodiment of the present invention can directly obtain the power operation information of multiple substations with different voltage levels, and determine whether the corresponding substation has a fault based on the power operation information of each substation, and disconnect the faulty substation from the main circuit. The power system control method provided by the embodiment of the present invention simplifies the control logic and reduces the communication delay, so as to achieve rapid disconnection when a substation fails and ensure the safe and stable operation of the power grid.

[0069] For the above method embodiment, the embodiment of the present invention also provides Figure 6 An electric power system control device shown includes: a processor 201 and a memory 202, wherein the memory 202 stores instructions; the processor 201 calls the instructions in the memory 202 so that the processor 201 executes the electric power system control method of any of the aforementioned embodiments of the present invention.

[0070] The power system control method provided by the embodiment of the present invention includes: obtaining power operation information of each substation; judging whether the corresponding substation has a fault based on the power operation information; and controlling the corresponding substation to be disconnected from the main circuit when a substation has a fault.

[0071] The power system control device provided by the embodiment of the present invention can directly obtain the power operation information of multiple substations with different voltage levels by implementing the above method, and judge whether the corresponding substation has a fault based on the power operation information of each substation, and disconnect the faulty substation from the main circuit, thereby simplifying the control logic and reducing the communication delay, so as to achieve rapid disconnection when the substation fails and ensure the safe and stable operation of the power grid.

[0072] Furthermore, the power system control device provided in the embodiment of the present invention may further include a communication interface 203 and a bus 204 , and the processor 201 , the memory 202 and the communication interface 203 are electrically connected via the bus 204 .

[0073] The memory 202 may include a high-speed random access memory (RAM), and may also include a non-volatile memory, such as at least one disk storage. The communication connection between the system network element and at least one other network element is realized through at least one communication interface 203 (which may be wired or wireless), and the Internet, wide area network, local area network, metropolitan area network, etc. may be used. The bus 204 may be an ISA bus, a PCI bus, or an EISA bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 6 Only one bidirectional arrow is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0074] The processor 201 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the processor 201. The above processor 201 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present invention can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in conjunction with the embodiments of the present invention can be directly embodied as a hardware decoding processor for execution, or a combination of hardware and software modules in the decoding processor for execution. The software module may be located in a storage medium mature in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 202, and the processor 201 reads the information in the memory 202 and completes the steps of the method of the above embodiment in combination with its hardware.

[0075] An embodiment of the present invention also provides a computer-readable storage medium, which may be a non-volatile computer-readable storage medium or a volatile computer-readable storage medium. Instructions are stored in the computer-readable storage medium. When the instructions are executed on a computer, the computer executes the steps of the above-mentioned power system control method.

[0076] The computer-readable storage medium provided by the embodiment of the present invention stores data and computer executable instructions of the above-mentioned power system control method, and the above-mentioned power system control method includes: obtaining power operation information of each substation; based on the power operation information, determining whether the corresponding substation has a fault; in the state of a substation fault, controlling the corresponding substation to be disconnected from the main circuit.

[0077] The computer-readable storage medium provided by the embodiment of the present invention can directly obtain the power operation information of multiple substations with different voltage levels by implementing the above method, and determine whether the corresponding substation has a fault based on the power operation information of each substation, and disconnect the faulty substation from the main circuit, thereby simplifying the control logic and reducing the communication delay, so as to achieve rapid disconnection when a substation fails and ensure the safe and stable operation of the power grid.

[0078] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0079] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program codes.

[0080] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power system, characterized in that: include: A plurality of substations, wherein the plurality of substations include at least two voltage levels, and each of the substations is electrically connected to a main circuit; A plurality of data collection switch units, each of which is electrically connected to the corresponding substation, and is used to control the on-off of the substation and the main circuit, and to collect power operation information of the substation; A core computing unit, wherein the core computing unit is communicatively connected with each of the acquisition switch units, and the core computing unit is used to obtain the power operation information collected by each of the acquisition switch units, and control the acquisition switch unit to connect or disconnect the corresponding substation with the main circuit according to the power operation information.

2. The power system according to claim 1, characterized in that: Each of the acquisition switch units is communicatively connected to the core computing unit via the IEC 61850 communication protocol.

3. The power system according to claim 1, characterized in that: Each of the acquisition switch units is connected to the core computing unit in the same communication network via the IEC61850 communication protocol, and each of the acquisition switch units in the communication network is directly connected to the core computing unit.

4. A power system control method, characterized in that: The power system control method is used to control the on-off of a plurality of substations with different voltage levels and a main circuit, and the power system control method comprises: Obtaining power operation information of each of the substations; Based on the power operation information, determining whether the corresponding substation has a fault; When the substation fails, the corresponding substation is controlled to be disconnected from the main circuit.

5. The power system control method according to claim 4, characterized in that: The step of obtaining the power operation information of each substation comprises: Based on the IEC 61850 communication protocol, the power operation information of each substation is obtained.

6. The power system control method according to claim 4, characterized in that: The step of determining whether a corresponding substation fails based on the power operation information comprises: Based on the power operation information, obtaining the corresponding operation parameters of the substation; The operating parameter is compared with a preset threshold range. If the operating parameter is not within the preset threshold range, a fault occurs in the corresponding substation.

7. The power system control method according to claim 4, characterized in that: When the substation fails, the step of controlling the corresponding substation to be disconnected from the main circuit comprises: When the substation fails, a control instruction is generated based on the IEC 61850 communication protocol to control the corresponding substation to be disconnected from the main circuit.

8. The power system control method according to claim 4, characterized in that: The power operation information includes current information, voltage information, frequency information, power factor, phase information, and harmonic information of the corresponding substation.

9. A power system control device, characterized in that: The power system control device comprises: a processor and a memory, wherein instructions are stored in the memory; The processor calls the instruction in the memory so that the power system control device implements the power system control method according to any one of claims 4 to 8.

10. A computer-readable storage medium having instructions stored thereon, characterized in that: When the instructions are executed by the processor, the power system control method according to any one of claims 4 to 8 is implemented.

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