A method and system for processing power grid equipment bus differential protection exit operation

Abstract

The present disclosure relates to the technical field of power grid operation and maintenance, and provides a method for processing the exit of the bus differential protection of power grid equipment, comprising the following steps: the main station of the security system collects information of the protection device, determines whether the two sets of bus differential protection are exited at the same time, and if so, generates a prompt message and sends it to the intelligent operation and maintenance server; the intelligent operation and maintenance server identifies the protection lines that need to modify the set value and generates a modification list based on the prompt information and the primary equipment topology map sent by the OCS system; the DICP platform generates an operation instruction based on the modification list and sends it to the security system main station, and the security system main station finds the corresponding protection device and modifies the set value according to the operation instruction. The present disclosure also provides a processing system for the exit of the bus differential protection of power grid equipment to implement the above-mentioned processing method. The embodiments of the present disclosure can improve the efficiency of operation and maintenance and avoid excessively long protection mismatch time.

Description

Technical Field

[0001] The present disclosure relates to the technical field of intelligent substations, and in particular to a method and system for processing the exit of busbar differential protection of power grid equipment. Background Art

[0002] To ensure power system reliability, current power equipment requires dual bus differential protection for buses 220kV and above. This ensures that when one bus differential protection set is deactivated, another set remains operational, maintaining the busbar's protected state and preserving system operation. However, if both 220kV bus differential protection sets are deactivated simultaneously, the setting time for the line protection distance II section of all opposite stations on the busbar must be modified to ensure rapid isolation of the fault in the event of a busbar failure, thereby maintaining system stability.

[0003] The existing method for modifying the distance II period of the opposite-station line protection involves the dispatcher making a decision and issuing an order to the operations and maintenance personnel, who then modify the setting range at the substation. This requires manual identification of the busbar and its associated lines where both busbar differential protection systems are deactivated before modifying the setting range. This inefficient process results in prolonged protection mismatches when both busbar differential protection systems are deactivated, hindering system stability. Summary of the Invention

[0004] The purpose of the embodiments of the present disclosure is to provide a method to solve the problem in the related art that when the bus differential protection systems of power grid equipment exit at the same time and need to modify the set values, the efficiency is low, resulting in a long protection mismatch time.

[0005] In order to achieve the above objectives, the embodiments of the present disclosure adopt the following technical solutions:

[0006] According to one aspect of the present invention, an embodiment of the present disclosure provides a method for processing the exit of bus differential protection of power grid equipment, which is applied to a processing system, wherein the processing system includes: a security master station, a security substation, an OCS system, an intelligent operation and maintenance server, and a DICP platform. The processing method includes the following steps:

[0007] The security master station collects the protection device information sent by each of the security substations, determines whether the dual bus differential protections of each of the security substations are simultaneously out of operation, and if so, generates corresponding prompt information and sends it to the intelligent operation and maintenance server, wherein the protection device information includes the operating status of the protection device;

[0008] After receiving the prompt information, the intelligent operation and maintenance server identifies the protection devices that need to modify the setting values ​​when the two sets of bus differential protection are simultaneously exited based on the topology information of the substation equipment sent by the OCS system, and generates a corresponding modification list and sends it to the DICP platform;

[0009] The DICP platform generates a corresponding programmed operation ticket according to the modification list, and sends the programmed operation ticket to the Baoxin main station;

[0010] The protection master station controls the corresponding protection device to modify the set value according to the programmed operation ticket.

[0011] In some embodiments, determining whether the dual bus differential protections of each of the signal-protecting substations are simultaneously deactivated includes:

[0012] Determine whether the soft pressure plate of the bus differential protection function has been exited; or determine whether all the soft pressure plates of the bus differential protection outlets have been exited; or determine whether the bus differential protection device has sent a locking signal.

[0013] In some embodiments, the intelligent operation and maintenance server identifies, based on the topology information of the substation equipment sent by the OCS system, a protection device that needs to modify the set value when the two sets of bus differential protection are simultaneously exited, including:

[0014] The intelligent operation and maintenance server determines that the two sets of bus differential protection of the first substation are simultaneously exited according to the prompt information;

[0015] The intelligent operation and maintenance server identifies, based on the primary system topology diagram sent by the OCS system, a line of a second substation associated with the first substation, and determines that a fixed value modification is required for the line of the second substation;

[0016] The intelligent operation and maintenance server generates a corresponding modification list according to the lines of the second substation and the protection device list obtained from the security master station.

[0017] In some embodiments, when the protection master station identifies that two sets of mother differential protection exit at the same time based on the protection device information, it generates the corresponding prompt information and sends the prompt information to the intelligent operation and maintenance server. The prompt information includes a protection device list.

[0018] In some embodiments, the DICP platform generates a corresponding programmed operation ticket based on the modification list, wherein the programmed operation ticket includes the substation name, the protection device name and the operation task.

[0019] In some embodiments, the security master station controls the protection device of the strained power station to modify the set value according to the programmed operation ticket, including:

[0020] The security master station obtains the programmed operation ticket and establishes an association relationship with the protection device corresponding to the security master station according to the information in the programmed operation ticket;

[0021] The security master station generates a substation operation instruction according to the association relationship, and sends the substation operation instruction to the protection device of the corresponding substation to modify the set value of the protection device.

[0022] In some embodiments, modifying the setting value of the protection device includes switching a protection zone of the protection device.

[0023] In some embodiments, after the setting value of the protection device of the substation is modified, the method further includes:

[0024] The security master station generates a corresponding success message and sends the success message to the DICP platform;

[0025] The DICP platform confirms the current fixed value modification according to the success message.

[0026] In some embodiments, after the DICP platform confirms the current fixed value modification according to the success message, it sends the next operation instruction to the security master station until all operation instructions are sent.

[0027] According to another aspect of the present invention, a processing system for exiting bus differential protection of power grid equipment is provided, comprising: a trustworthy master station, a trustworthy substation, an intelligent operation and maintenance server, and a DICP platform, capable of implementing the above-mentioned processing method.

[0028] The disclosed embodiment of the present invention of the Baoxin substation sets up an intelligent operation and maintenance server and connects the Baoxin main station with the interface of the DICP platform and the OCS system. By collecting the information sent by the protection device, it can automatically identify the substation where the two sets of mother differential protection are simultaneously exited, and send the list of constant values ​​that need to be modified to the DICP platform. The DICP platform automatically generates the operation instructions for changing the constant values, and the Baoxin main station automatically completes the constant value change. It can greatly improve the operation and maintenance efficiency, realize fast, efficient and accurate modification of the constant values, and avoid the situation where the protection mismatch time of the two sets of mother differential protection of power grid equipment is too long. It is beneficial to ensure the safe and stable operation of the power system and save manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0030] Figure 1 This is a schematic diagram of the overall structure of a processing system for exiting operation of busbar differential protection of power grid equipment according to an embodiment of the present disclosure;

[0031] Figure 2 This is a schematic diagram of the specific structure of a processing system for exiting operation of busbar differential protection of power grid equipment according to an embodiment of the present disclosure;

[0032] Figure 3 The present invention is a schematic diagram of the steps of a method for processing the exit of the bus differential protection of power grid equipment according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] Various aspects and features of the present disclosure are described herein with reference to the accompanying drawings.

[0034] It should be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the above description should not be considered as limiting, but merely as an example of an embodiment. Other modifications within the scope and spirit of the present disclosure will occur to those skilled in the art.

[0035] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the general description of the present disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the present disclosure.

[0036] These and other characteristics of the present disclosure will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0037] It should also be understood that although the present disclosure has been described with reference to certain specific examples, those skilled in the art will be able to realize many other equivalent forms of the present disclosure that have the characteristics recited in the claims and are therefore within the scope of protection defined thereby.

[0038] The above and other aspects, features and advantages of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0039] Specific embodiments of the present disclosure will be described hereinafter with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of the present disclosure, which may be implemented in a variety of ways. Well-known and / or repetitive functions and structures are not described in detail to avoid obscuring the present disclosure with unnecessary or redundant detail. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but rather serve merely as a basis and representative basis for teaching those skilled in the art to variously employ the present disclosure with substantially any suitable detailed structure.

[0040] This description may use the phrases "in one embodiment," "in another embodiment," "in a further embodiment," or "in other embodiments," each of which may refer to one or more of the same or different embodiments according to the present disclosure.

[0041] An embodiment disclosed in the present invention provides a method for processing the exit of the bus differential protection of a power grid device, which is applied to a processing system. The processing system is established in a power grid device of 220V and above, and two sets of bus differential protection are provided in the power grid device. The processing method provided in the embodiment disclosed in the present invention is suitable for judging the situation where both sets of bus differential protection of the power grid device are exited.

[0042] To facilitate the description of the steps of the processing method, the overall structure of the processing system is first described below. Figure 1 、 2 As shown, the processing system includes: a Baoxin main station 1, multiple Baoxin substations 2, an OCS system 4, an intelligent operation and maintenance server 3, and a DICP platform 5. In a specific embodiment, the Baoxin main station 1 and the DICP platform 5, the Baoxin main station 1 and the intelligent operation and maintenance server 3, the intelligent operation and maintenance server 3 and the DICP platform 5, and the intelligent operation and maintenance server 3 and the OCS system 4 are connected through the firewall 60 interface to achieve network communication.

[0043] See also Figure 3 The processing method provided in the embodiment of the present disclosure includes the following steps:

[0044] Step S1: The protection master station collects protection device information sent by each of the protection substations, determines whether the dual bus differential protections of each of the protection substations are simultaneously deactivated, and if so, generates corresponding prompt information and sends it to the intelligent operation and maintenance server, wherein the protection device information includes the operating status of the protection device;

[0045] The main security station 1 collects the protection device information sent by each security substation 2, determines whether the mother differential protection of the power grid equipment has exited operation, and if so, generates a prompt message containing the protection device information of the security substation 2, and sends the association list to the intelligent operation and maintenance server 3.

[0046] The main Baoxin station 1 collects the protection device information sent by each Baoxin substation 2. Specifically, the full name of the Baoxin main station 1 is the relay protection fault information management system main station, which is installed in the power system dispatching control center and region, and is responsible for monitoring and managing the operating status of the entire power system; the full name of the Baoxin substation 2 is the relay protection information management substation, which can be optionally built on a substation basis, and can collect and monitor the relay protection device information of the entire station, including telemetry, telesignaling, set values, action information, and fault information. The Baoxin main station 1 communicates with the corresponding Baoxin substation 2, and can collect and process the protection device information uploaded by the Baoxin substation 2, thereby monitoring the status of the protection device. In a specific embodiment, the Baoxin main station 1 and each Baoxin substation 2 communicate through a dispatching data network.

[0047] In this step, judging whether the dual bus differential protection of the power grid equipment has exited operation includes: whether the bus differential protection function soft pressure plate has exited; or judging whether all bus differential protection outlet soft pressure plates have exited; or whether the bus differential protection device sends a locking signal.

[0048] It is worth noting that the above three judgment criteria adopt OR gate logic, that is, as long as the main station 1 determines that at least one of the three situations, namely, the soft pressure plate of the bus differential protection function has been exited, the soft pressure plates of all bus differential protection outlets have been exited, and the bus differential protection device has sent a locking signal, based on the protection device information sent by the substation 2, it can be determined that both sets of bus differential protection have been exited.

[0049] Generate a corresponding prompt message and send it to the intelligent operation and maintenance server, where the protection device information includes the operating status of the protection device. Specifically, generating the corresponding prompt message includes generating an association list containing the protection device information associated with the protection signal substation 2, and sending the association list to the intelligent operation and maintenance server 3. The association list lists the identities of the protection devices directly associated with the busbar that has exited the bus differential protection.

[0050] In some specific embodiments, the security main station 1 can generate alarm information while generating an association list, and send the alarm information together with the association list when sending it to the intelligent operation and maintenance server 3, so that the intelligent operation and maintenance server 3 can perform the next step after receiving the prompt of the alarm information.

[0051] Step S2: After receiving the prompt information, the intelligent operation and maintenance server identifies the protection devices that need to modify the set values ​​when the two sets of bus differential protection are exited at the same time based on the topology information of the substation equipment sent by the OCS system, and generates a corresponding modification list and sends it to the DICP platform.

[0052] Specifically, OCS 4, short for "Power Grid Operation and Control System," is the system within the intelligent power grid responsible for real-time command and monitoring of power grid currents and graphs. It generates and records real-time data and stores historical data. In particular, it records topological information about the relationships between primary and secondary equipment, busbars, and protective devices, generating a primary equipment topology map. In this step, OCS 4 periodically transmits substation equipment topology information to the intelligent operation and maintenance server 3. Specifically, OCS 4 periodically transmits the latest primary equipment topology map to the intelligent operation and maintenance server 3, enabling the intelligent operation and maintenance server 3 to use the primary equipment topology map for operational management and statistical analysis.

[0053] The intelligent operation and maintenance server 3 finds the protection devices that need to be modified based on the list of associated devices and the topological information of the substation equipment, generates a modification list, and sends the modification list to the DICP platform 5. That is, it identifies the opposite station line protections associated with the protection devices recorded in the list of associated devices, lists these opposite station line protections in the modification list, and then calculates the modification rules of the setting time of the distance II section of these opposite station line protections, organizes them into a modification list, and sends it to the DICP platform 5.

[0054] Furthermore, the aforementioned modification rule can be modified by modifying a fixed value zone. A fixed value zone refers to a set of pre-stored parameter values ​​set in a protection device. In the disclosed embodiment of the present invention, this refers to the setting time of a protection action. For example, Zone 01 is preset as a set of setting times used during normal operation, and Zone 02 is preset as a set of setting times used when the bus differential protection is exited. The modification rule can be "switch the setting time from Zone 01 to Zone 02."

[0055] Switching the set value zone refers to the process of switching the set value of the relay protection device according to the change of the operating mode during the operation of the power system.

[0056] Step S3: The DICP platform generates a corresponding programmed operation ticket according to the modification list, and sends the programmed operation ticket to the security master station; the security master station controls the corresponding protection device to modify the set value according to the programmed operation ticket.

[0057] Specifically, the DICP platform 5 is called the "Intelligent Command Platform for Power Grid Dispatching" and can provide container virtualization, service orchestration, and container clustering functions, as well as data services and other services, which will not be described in detail here. In the embodiment disclosed in the present invention, the DICP platform 5 can generate operation instructions based on the modification list and modification rules sent by the intelligent operation and maintenance server 3 and can realize human-computer interaction. Preferably, after the DICP platform generates the operation instructions, it displays the operation instructions through a display device. The dispatcher confirms the operation instructions through the human-computer interaction device and then sends the operation instructions to the corresponding security master station 1.

[0058] The programmed operation ticket includes: the name of the protection device that needs to be modified in the fixed value area and the corresponding Baoxin substation substation name, as well as the content of the task of modifying the fixed value area, so that the Baoxin main station 1 finds the corresponding protection device and communicates according to the name of the substation Baoxin substation and the name of the protection device, and sends the task of modifying the fixed value area to the protection device. The protection device modifies the fixed value area according to the content of the task of modifying the fixed value area.

[0059] In a specific embodiment, the Baoxin master station obtains a programmed operation ticket and establishes an association relationship with the protection device corresponding to the Baoxin master station based on the information in the programmed operation ticket; the Baoxin master station generates a substation operation instruction based on the association relationship, and sends the substation operation instruction to the protection device of the corresponding substation to modify the set value of the protection device.

[0060] In a specific embodiment, after the protection device completes the modification of the set value zone, the protection signal master station 1 collects the status of the protection device, determines whether the protection device has indeed completed the modification of the set value zone, and sends a success message to the DICP platform 5. After the DICP platform 5 confirms the success message, it sends the next operation instruction.

[0061] The following combination Figure 2 The specific implementation and beneficial effects of the embodiments of the present disclosure are illustrated by way of example:

[0062] See also Figure 2 , the security main station 1 collects the protection device information sent by the security substation A, the security substation B and the security substation C, and monitors whether the protection devices in each security substation have the mother differential protection function soft pressure plate exited, the mother differential protection all outlet soft pressure plates exited, or the mother differential protection device sends a locking signal. Assuming that the mother differential protection function soft pressure plate of the protection device of the security substation A exits, it is determined that the mother differential protection one 201 and the mother differential protection two 202 of the security substation A exit at the same time. Afterwards, the security main station 1 generates a prompt message and sends it to the intelligent operation and maintenance server 3. After the intelligent operation and maintenance server 3 receives the prompt message, it identifies the protection line that needs to modify the set value according to the topological relationship information sent by the OCS system 4 and generates a modification list and modification rules. Assume that in this step, intelligent operation and maintenance server 3 identifies the protection lines associated with the protection device at Baoxin substation A as Line 1 at Baoxin substation B and Line 2 at Baoxin substation C. The generated modification list should include Line 1 primary protection 203, Line 1 primary protection 204, Line 2 primary protection 205, and Line 2 primary protection 206. The generated modification list also includes modifying the setting time of the protection distance segment II of these lines. Intelligent operation and maintenance server 3 then sends the modification list to DICP platform 5.

[0063] DICP platform 5 generates programmed operation tickets based on the modification details. Each programmed operation ticket contains the corresponding substation name, protection device name, and the task content for modifying the setting zone. For example, if the programmed operation ticket reads "Baoxin Substation B Line Protection 1 Main 1 Protection 203 Setting Zone Switched from Zone 01 to Zone 02," Baoxin Master Station 1 locates Baoxin Substation B based on the programmed operation ticket, communicates with Line Protection 1 Main 1 Protection 203 in Baoxin Substation B, and generates an operation instruction to switch its setting zone from Zone 01 to Zone 02. Baoxin Master Station 1 then determines that Line Protection 1 Main 1 Protection 203 in Baoxin Substation B has modified its setting and sends a success message to DICP platform 5. Upon receiving the success message, DICP platform 5 sends the next programmed operation ticket, namely, "Baoxin Substation B Line Protection 1 Main 2 Protection 204 Setting Zone Switched from Zone 01 to Zone 02," and so on, until all the protection devices requiring setting changes have been modified.

[0064] The disclosed embodiment of the present invention sets up an intelligent operation and maintenance server 3 and connects the interfaces of the security main station 1, the DICP platform 5, and the OCS system 4. By collecting information sent by the protection device, it realizes automatic identification of the substation where two sets of bus differential protection are simultaneously exited, and sends the list of fixed values ​​that need to be modified to the DICP platform 5. The DICP platform 5 automatically generates an operation instruction for changing the fixed values, and the security main station 1 automatically completes the changing of the fixed values. This can greatly improve the operation and maintenance efficiency, realize fast, efficient and accurate modification of the fixed values, avoid the situation where the protection mismatch time of the two sets of grid equipment bus differential protection is too long, is conducive to ensuring the safe and stable operation of the power system, and can also save manpower.

[0065] In a specific embodiment, the trustworthy substation includes an intelligent telemotor, an intelligent recorder, a control substation, and the like.

[0066] In a specific embodiment, the DICP platform 5 is deployed in the security zone II with a higher network security level, and the Baoxin main station 1, Baoxin substation, OCS system 4 and intelligent operation and maintenance server 3 are deployed in the security zone I with a lower network security level.

[0067] In a specific embodiment, two sets of busbar differential protection for power equipment operate on busbars of 220V and above.

[0068] The storage medium may be included in the electronic device, or may exist independently without being incorporated into the electronic device.

[0069] The storage medium carries one or more programs. When the one or more programs are executed by the electronic device, the electronic device: obtains at least two Internet Protocol addresses; sends a node evaluation request including at least two Internet Protocol addresses to a node evaluation device, wherein the node evaluation device selects an Internet Protocol address from the at least two Internet Protocol addresses and returns it; receives the Internet Protocol address returned by the node evaluation device; wherein the obtained Internet Protocol address indicates an edge node in a content distribution network.

[0070] Alternatively, the storage medium carries one or more programs, which, when executed by the electronic device, cause the electronic device to: receive a node evaluation request including at least two Internet Protocol addresses; select an Internet Protocol address from the at least two Internet Protocol addresses; and return the selected Internet Protocol address; wherein the received Internet Protocol address indicates an edge node in a content distribution network.

[0071] Computer program code for performing the operations of the present disclosure may be written in one or more programming languages, or a combination thereof, including, but not limited to, object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the passenger computer, partially on the passenger computer, as a stand-alone software package, partially on the passenger computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the passenger computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0072] It should be noted that the storage medium mentioned above in the present disclosure may be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. A computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or component, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present disclosure, a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, device, or component. In the present disclosure, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries computer-readable program code. Such a propagated data signal may take a variety of forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination of the above. A computer-readable signal medium may also be any storage medium other than a computer-readable storage medium that can transmit, propagate, or convey a program for use by or in conjunction with an instruction execution system, apparatus, or device. The program code contained on the storage medium may be conveyed using any suitable medium, including but not limited to wires, optical cables, RF (radio frequency), or any suitable combination thereof.

[0073] The flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, program segment, or a part of code, and the module, program segment, or a part of code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order than that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of the boxes in the block diagram and / or flowchart, can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0074] The units involved in the embodiments described in this disclosure may be implemented in software or hardware, wherein the name of a unit does not necessarily limit the unit itself.

[0075] The functions described above herein may be performed, at least in part, by one or more hardware logic components. For example, and without limitation, exemplary types of hardware logic components that may be used include: field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chip (SOCs), complex programmable logic devices (CPLDs), and the like.

[0076] In the context of the present disclosure, a machine-readable medium can be a tangible medium that can contain or store a program for use by or in conjunction with an instruction execution system, device or equipment. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium can include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0077] The above description is merely a preferred embodiment of the present disclosure and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of disclosure involved in the present disclosure is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also includes other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the above-mentioned disclosed concepts. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this disclosure.

[0078] In addition, although each operation is described in a specific order, this should not be understood as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details have been included in the above discussion, these should not be interpreted as limiting the scope of the present disclosure. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.

[0079] Although the subject matter has been described in language specific to structural features and / or methodological logical acts, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are merely example forms of implementing the claims.

[0080] The above describes in detail multiple embodiments of the present disclosure, but the present disclosure is not limited to these specific embodiments. Those skilled in the art can make various variations and modifications to the embodiments based on the concepts of the present disclosure, and these variations and modifications should fall within the scope of protection required by the present disclosure.

Claims

1. A method for processing the exit of busbar differential protection of power grid equipment, characterized in that: Applied to a processing system, the processing system includes: a Baoxin master station, a Baoxin substation, a power grid operation control (OCS) system, an intelligent operation and maintenance server, and a power grid dispatch intelligent command (DICP) platform. The processing method includes the following steps: The security master station collects the protection device information sent by each of the security substations, determines whether the dual bus differential protections of each of the security substations are simultaneously out of operation, and if so, generates corresponding prompt information and sends it to the intelligent operation and maintenance server, wherein the protection device information includes the operating status of the protection device; After receiving the prompt information, the intelligent operation and maintenance server identifies the protection devices that need to modify the setting values ​​when the two sets of bus differential protection are simultaneously exited based on the topology information of the substation equipment sent by the grid operation and control (OCS) system, and generates a corresponding modification list and sends it to the grid dispatch intelligent command (DICP) platform; The DICP platform generates a corresponding programmed operation ticket according to the modification list, and sends the programmed operation ticket to the security master station; The protection master station controls the corresponding protection device to modify the set value according to the programmed operation ticket; The intelligent operation and maintenance server identifies, based on the topology information of the substation equipment sent by the grid operation and control (OCS) system, a protection device that needs to modify the set value when the two sets of bus differential protection are simultaneously exited, including: The intelligent operation and maintenance server determines that the two sets of bus differential protection of the first substation are simultaneously exited according to the prompt information; The intelligent operation and maintenance server identifies, based on the primary system topology diagram sent by the grid operation and control (OCS) system, a line of a second substation associated with the first substation, and determines that a fixed value modification is required for the line of the second substation; The intelligent operation and maintenance server generates a corresponding modification list based on the lines of the second substation and the protection device list obtained from the security master station; When the protection master station identifies that two sets of bus differential protection are exited at the same time based on the protection device information, it generates the corresponding prompt information and sends the prompt information to the intelligent operation and maintenance server. The prompt information includes a protection device list.

2. The processing method according to claim 1, characterized in that Determining whether the dual bus differential protections of each of the security substations are simultaneously out of operation includes: Determine whether the busbar differential protection function soft pressure plate is exited; or Determine whether all outlet soft pressure plates of busbar differential protection have exited; or Determine whether the bus differential protection device sends a locking signal.

3. The processing method according to claim 1, characterized in that The DICP platform generates a corresponding programmed operation ticket according to the modification list, wherein the programmed operation ticket includes a substation name, a protection device name, and an operation task.

4. The processing method according to claim 3, characterized in that The security master station controls the protection device of the corresponding power station to modify the set value according to the programmed operation ticket, including: The security master station obtains the programmed operation ticket and establishes an association relationship with the protection device corresponding to the security master station according to the information in the programmed operation ticket; The security master station generates a substation operation instruction according to the association relationship, and sends the substation operation instruction to the protection device of the corresponding substation to modify the set value of the protection device.

5. The processing method according to claim 4, characterized in that: Modifying the setting value of the protection device includes switching the protection zone of the protection device.

6. The processing method according to claim 1, characterized in that After the setting value of the protection device of the substation is modified, the method further includes: The security master station generates a corresponding success message and sends the success message to the grid dispatch intelligent command (DICP) platform; The grid dispatch intelligent command (DICP) platform confirms the current fixed value modification according to the success message.

7. The processing method according to claim 6, characterized in that After the DICP platform confirms the current fixed value modification according to the success message, it sends the next operation instruction to the security master station until all the operation instructions are sent.

8. A processing system for exiting busbar differential protection of power grid equipment, characterized in that: include: The Baoxin main station, the Baoxin substation, the intelligent operation and maintenance server, and the power grid dispatching intelligent command (DICP) platform can implement the processing method described in any one of claims 1 to 7.

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