Intelligent station main transformer protection GOOSE outlet soft pressing plate state alarm method

Abstract

The invention provides an intelligent station main transformer protection GOOSE outlet soft strap state alarm method. The method comprises the steps that a protection and information master station obtains a double-bus double-segment intelligent station main transformer protection list, identifies intelligent station main transformer protection equipment in the intelligent station main transformer protection list, and obtains the on-off state of a GOOSE outlet soft pressing plate of the intelligent station main transformer protection equipment by remotely inspecting the intelligent station main transformer protection equipment; the information protection main station system obtains position information of a bus hung on a disconnecting link of the intelligent station main transformer protection double-bus double-section side, and determines the position information of the bus hung on the disconnecting link as operation mode information; and generating an alarm signal under the condition that the on-off state of the GOOSE outlet soft pressing plate is inconsistent with the operation mode information. According to the method, the problem that mistaken switching of the main transformer protection GOOSE outlet soft pressing plate is difficult to identify for a double-bus double-section wiring intelligent substation in the prior art is solved.

Description

Technical Field

[0001] The present application relates to intelligent monitoring technology, and in particular to an alarm method, an alarm system and a computer-readable storage medium for the status of a soft pressure plate at a GOOSE outlet of a main transformer protection of an intelligent station. Background Art

[0002] In traditional substations, the tripping outlets of main transformer protection are usually connected to circuit breakers and other devices through hard wiring, and their configuration and adjustment are relatively intuitive and stable. However, with the popularization of smart substations, GOOSE (Generic Object Oriented Substation Events) has become the main way for smart devices to interact with each other, enabling protection devices to control the tripping of circuit breakers through network communication. This method simplifies the wiring of secondary cables, but also introduces new challenges.

[0003] In the smart substation with dual-bus dual-section wiring, the configuration of the GOOSE outlet soft pressure plate of the main transformer protection needs to be flexibly adjusted according to the different buses on which the main transformer operates. In the operation and maintenance of most smart substations, the inspection of the GOOSE outlet soft pressure plate of the main transformer protection still relies on manual operation, including regular inspections and inspections after faults occur. Such operations require high skill levels of the operation and maintenance personnel, and it is difficult to identify the situation where the GOOSE outlet soft pressure plate of the main transformer protection is mistakenly put in and out. Summary of the invention

[0004] The main purpose of the present application is to provide an alarm method, an alarm system and a computer-readable storage medium for the status of the soft pressure plate at the GOOSE outlet of the main transformer protection of an intelligent station, so as to at least solve the problem in the prior art that it is difficult to identify the erroneous activation and deactivation of the soft pressure plate at the outlet of the main transformer protection GOOSE for the intelligent substation with double-mother and double-segment wiring.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, an alarm method for the status of the GOOSE outlet soft pressure plate of the main transformer protection of an intelligent station is provided, including: the security master station obtains a list of the main transformer protection of the intelligent station with dual mother and dual sections; the security master station identifies the main transformer protection equipment of the intelligent station in the protection list of the main transformer of the intelligent station; the security master station obtains the on / off status of the GOOSE outlet soft pressure plate of the main transformer protection equipment of the intelligent station by remotely patrolling the main transformer protection equipment of the intelligent station; the security master station obtains the bus position information of the knife switch on the dual mother and dual section side of the main transformer protection of the intelligent station from the power grid dispatching automation system, and determines the bus position information of the knife switch as the operating mode information; determines whether the on / off status of the GOOSE outlet soft pressure plate is consistent with the operating mode information; and generates an alarm signal when the on / off status of the GOOSE outlet soft pressure plate is inconsistent with the operating mode information.

[0006] Optionally, the Baoxin master station obtains a dual-mother and dual-segment smart station main transformer protection list, including: the Baoxin master station obtains a substation list with a dual-mother and dual-segment wiring method; the Baoxin master station automatically reads the model information of all smart station main transformer protection devices connected to the Baoxin master station according to the substation list, and generates the smart station main transformer protection list.

[0007] Optionally, the Baoxin master station obtains a list of substations with a dual-mother and dual-segment wiring method, including: the Baoxin master station obtains the first wiring method information of the 220kV bus and the second wiring method information of the 110kV bus from the power grid dispatching automation system; determines the substation with a dual-mother and dual-segment wiring method as the target substation based on the first wiring method information and the second wiring method information; integrates the information of the target substation into a list of substations with a dual-mother and dual-segment wiring method, and the information of the target substation includes the name of the target substation, the ID of the target substation and the wiring method characteristics of the target substation.

[0008] Optionally, a substation with a dual-mother dual-segment wiring mode is determined as a target substation according to the first wiring mode information and the second wiring mode information, including: when the 220kV bus has a switch with a first preset number, a switch with a second preset number, a switch with a third preset number and a switch with a fourth preset number at the same time, the 220kV bus is determined to be a dual-mother dual-segment wiring mode; when the 110kV bus has a switch with a fifth preset number, a switch with a sixth preset number, a switch with a seventh preset number and a switch with an eighth preset number at the same time, the 110kV bus is determined to be a dual-mother dual-segment wiring mode; and the substation with the dual-mother dual-segment wiring mode is determined as the target substation.

[0009] Optionally, the security master station identifies the smart station main transformer protection device in the smart station main transformer protection list, including: querying the protection device ledger, and determining that the device with a model suffix being a preset model suffix is ​​the smart station main transformer protection device.

[0010] Optionally, the intelligent station main transformer protection device has a remote communication interface to obtain the on / off status of the GOOSE outlet soft pressure plate of the intelligent station main transformer protection device, including: the security master station is connected to the remote communication interface of the intelligent station main transformer protection device to obtain the on / off status of the GOOSE outlet soft pressure plate of the intelligent station main transformer protection device.

[0011] Optionally, after remotely inspecting the main transformer protection device of the intelligent station, the method further includes: the security main station checks whether there are other main transformer protection devices using the dual-mother and dual-segment wiring method that need to be inspected; if there are no other main transformer protection devices using the dual-mother and dual-segment wiring method that need to be inspected, the inspection process is ended; if there are other main transformer protection devices using the dual-mother and dual-segment wiring method that need to be inspected, the inspection is continued.

[0012] Optionally, determining whether the throw-in / out state of the GOOSE outlet soft pressure plate is consistent with the operating mode information includes: when the closed state of the first bus side knife switch and the closed state of the second bus side knife switch match the throw-in / out state of the GOOSE outlet soft pressure plate, determining that the throw-in / out state of the GOOSE outlet soft pressure plate is consistent with the operating mode information; when the closed state of the first bus side knife switch and the closed state of the second bus side knife switch do not match the throw-in / out state of the GOOSE outlet soft pressure plate, determining that the throw-in / out state of the GOOSE outlet soft pressure plate is inconsistent with the operating mode information.

[0013] In order to achieve the above-mentioned purpose, according to one aspect of the present application, an alarm system for the status of the soft pressure plate of the GOOSE outlet of the main transformer protection of an intelligent station is provided, including: a Baoxin main station, which is used to execute any one of the alarm methods for the status of the soft pressure plate of the GOOSE outlet of the main transformer protection of the intelligent station; a Baoxin substation, which is connected to the Baoxin main station through a dispatching data network, and the Baoxin substation includes an intelligent remote motor, an intelligent recorder, and a control substation, which is used to collect and upload main transformer protection information to the Baoxin main station; a power grid dispatching automation system, which is connected to the Baoxin main station to provide bus position information of the knife switch on the double-mother and double-section side of the main transformer protection of the intelligent station; a web server, which is connected to the Baoxin main station through a forward and reverse isolation device, and is used to receive and process the alarm signal sent by the Baoxin main station; an Elink office system, which communicates with the web server, and is used to receive the alarm signal sent by the web server and send the alarm signal to the operation and maintenance personnel.

[0014] According to another aspect of the present application, a computer-readable storage medium is provided, the computer-readable storage medium comprising a stored program, wherein when the program is running, the device where the computer-readable storage medium is located is controlled to execute any one of the alarm methods for the soft pressure plate status of the GOOSE outlet of the main transformer protection of the intelligent station.

[0015] By applying the technical solution of the present application, first, the Baoxin main station obtains the main transformer protection list of the dual-mother and dual-segment smart station, and identifies the main transformer protection equipment of the smart station in the main transformer protection list; then, the Baoxin main station obtains the on / off status of the GOOSE outlet soft pressure plate of the main transformer protection equipment of the smart station by remotely patrolling the main transformer protection equipment of the smart station; the Baoxin main station obtains the bus position information of the knife switch on the dual-mother and dual-segment side of the main transformer protection of the smart station from the power grid dispatching automation system, and determines the bus position information of the knife switch as the operating mode information; finally, it is determined whether the on / off status of the GOOSE outlet soft pressure plate is consistent with the operating mode information; when the on / off status of the GOOSE outlet soft pressure plate is inconsistent with the operating mode information, an alarm signal is generated, thereby solving the problem in the prior art that it is difficult to identify the erroneous on / off status of the main transformer protection GOOSE outlet soft pressure plate for the smart substation with dual-mother and dual-segment wiring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 A flowchart of an alarm method for the status of a soft pressure plate at an intelligent station main transformer protection GOOSE outlet is shown according to an embodiment of the present application;

[0018] Figure 2 A primary wiring diagram of a 220kV side of a 220kV example station of an alarm method for the soft pressure plate status of a GOOSE outlet of a main transformer protection of an intelligent station provided in an embodiment of the present application is shown;

[0019] Figure 3 The overall flow chart of an alarm method for the soft pressure plate status of the GOOSE outlet of the main transformer protection of an intelligent station provided in accordance with an embodiment of the present application is shown;

[0020] Figure 4 A system structure diagram of a method for alarming the soft pressure plate status of a GOOSE outlet of a main transformer protection of an intelligent station provided according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0023] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] As introduced in the background technology, the inspection of the main transformer protection GOOSE outlet soft pressure plate in the prior art still relies on manual operation, including regular inspections and inspections after a fault occurs. Such operations require a high level of skill for the operation and maintenance personnel, and it is difficult to identify the situation where the main transformer protection GOOSE outlet soft pressure plate is mistakenly deployed or withdrawn. In order to solve the problem in the prior art that it is difficult to identify the mistaken deployment or withdrawal of the main transformer protection GOOSE outlet soft pressure plate for the smart substation with double-mother and double-section wiring, an embodiment of the present application provides an alarm method, an alarm system and a computer-readable storage medium for the status of the main transformer protection GOOSE outlet soft pressure plate of the smart station.

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] Figure 1 1 is a flow chart of the method for alarming the soft pressure plate status of the GOOSE outlet of the main transformer protection of the intelligent station according to the embodiment of the present application. Figure 1 As shown, the method comprises the following steps:

[0027] Step S101, the security master station obtains a protection list of main transformers of a dual-mother and dual-segment intelligent station;

[0028] Specifically, the Baoxin master station is a protection device in a power system, used to monitor and protect the main transformer. Dual-mother and dual-section means that the main transformer has two inputs and two outputs, which are connected to different buses and sections respectively. An intelligent station refers to a power station equipped with intelligent functions. The main transformer protection list refers to a list of various protection functions and parameters in the main transformer protection system. By obtaining the main transformer protection list of the dual-mother and dual-section intelligent station, the Baoxin master station can effectively obtain and manage the main transformer protection equipment information related to the dual-mother and dual-section wiring method, and provide an accurate data basis for subsequent soft pressure plate status inspections and operation mode matching.

[0029] Step S102, the above-mentioned security master station identifies the smart station main transformer protection device in the above-mentioned smart station main transformer protection list;

[0030] Specifically, the main transformer protection equipment of the smart station refers to the equipment used to protect and control the main transformer in the power system. In the main transformer protection list of the smart station, all the equipment related to the main transformer protection is listed, including protection relays, current transformers, voltage transformers, etc. The function of these devices is to protect the main transformer from overload, short circuit and other faults to ensure the safe operation of the power system. By identifying the main transformer protection equipment in the smart station, the Baoxin main station can monitor the operating status of these devices in real time. Through the main transformer protection list of the smart station, the operation and maintenance personnel can clearly understand the location, status and parameter settings of each device, which is convenient for them to carry out maintenance and troubleshooting.

[0031] Step S103, the above-mentioned Baoxin master station obtains the activation and deactivation status of the GOOSE outlet soft pressure plate of the above-mentioned main transformer protection device of the above-mentioned smart station by remotely patrolling the above-mentioned main transformer protection device of the above-mentioned smart station;

[0032] Specifically, the Baoxin master station remotely patrols the main transformer protection equipment of the intelligent station, which means monitoring and managing the operating status and parameters of the main transformer protection equipment of the intelligent station through the network or other remote communication methods. GOOSE (Generic Object Oriented Substation Event) is a communication protocol used in intelligent power systems, which is used to quickly transmit status and event information between protection devices. The on / off status of the GOOSE export soft pressure plate refers to the on or off status of the soft pressure plate in the control system. When the soft pressure plate is in the on state, it means that the soft pressure plate has been started and can work normally. Otherwise, it means that the soft pressure plate is in the abdicated state and cannot work or has stopped working. The on / off status of the soft pressure plate is usually controlled by a signal or instruction in the control system, which is used to control the operation and stop of the soft pressure plate. The main transformer protection GOOSE export soft pressure plate includes the 220kV#1 segment 2015 soft pressure plate, the 220kV#2 segment 2026 soft pressure plate, the 220kV#1 busbar 2012 soft pressure plate, and so on. In actual applications, the soft pressure plate's throw-in and throw-out status can be set and adjusted through the monitoring system or control panel to ensure that the soft pressure plate can work normally when needed, and can stop running when not needed to save energy and extend the service life of the equipment. The Baoxin master station obtains the throw-in and throw-out status of the GOOSE export soft pressure plate by remotely patrolling the main transformer protection equipment of the intelligent station, so as to monitor and control the operating status of the protection equipment of the main transformer. This can realize remote monitoring and operation, and improve the reliability and safety of the system.

[0033] Step S104, the above-mentioned security master station obtains the bus position information of the switch on the double-bus double-section side of the main transformer protection of the above-mentioned intelligent station from the power grid dispatching automation system, and determines the bus position information of the switch as the operation mode information;

[0034] Specifically, the power grid dispatching automation system (Operation Control System, OCS) is an integrated, highly automated computer system used for real-time monitoring and control of the operating status of the power system. The power grid dispatching automation system provides decision support for dispatchers by collecting, processing and analyzing the operating data of various equipment in the power grid to maintain the stable, safe and economical operation of the power grid. The main components and functions of the power grid dispatching automation system are as follows:

[0035] Supervisory Control and Data Acquisition (SCADA): This is the basic component of the power grid dispatching automation system. It is responsible for collecting real-time telemetry (such as voltage, current, power, etc.), telesignaling (such as switch status, protection action information, etc.), remote control (remote control of switches and other equipment) and remote adjustment (remote adjustment of equipment parameters) data from power facilities such as substations, power plants, transmission lines, etc. distributed across the country.

[0036] State estimation and real-time analysis: The power grid dispatching automation system uses the collected data to make real-time estimates of the power grid state, including voltage level, load distribution, power flow, etc., to ensure accurate understanding and monitoring of the power grid. At the same time, it can also perform advanced applications such as fault diagnosis, power flow calculation, stability analysis, etc., providing dispatchers with a comprehensive perspective on power grid operation.

[0037] Dispatcher workstation: The dispatcher interacts with the power grid dispatch automation system through the workstation, which displays the real-time operation status of the power grid, including graphical interface, alarm information, historical data, etc. The dispatcher can monitor the power grid, make dispatch decisions and control operations based on this information.

[0038] Automatic Generation Control (AGC) and Automatic Voltage Control (AVC): The power grid dispatching automation system also integrates AGC and AVC functions to automatically adjust the output of power plants and the taps of transformers to keep the grid frequency and voltage within the specified range and achieve optimized operation of the grid.

[0039] Load forecasting and dispatching plan: The power grid dispatching automation system can predict future power demand based on historical data and weather forecast information, help dispatchers formulate power generation plans and load distribution strategies, and ensure the balance of power supply and demand.

[0040] Generation and execution of dispatch instructions: Dispatchers can send remote control instructions to power plants, substations and other equipment through the power grid dispatch automation system, such as adjusting power generation, switch operations, etc., to respond to changes or demands in power grid operation.

[0041] Fault recovery and emergency response: When a power grid fault occurs, the power grid dispatching automation system can quickly identify the fault point, provide recovery strategy recommendations, and perform corresponding recovery operations through remote control functions, such as isolating the fault area and restoring the power supply path, so as to minimize the impact of the fault on the power grid.

[0042] Data storage and historical analysis: The power grid dispatching automation system is responsible for storing a large amount of historical data on power grid operation. This data can be used for post-fault analysis, equipment maintenance, operation optimization, etc., helping the power grid dispatching center to improve management measures and operation strategies.

[0043] Communication network: The power grid dispatching automation system relies on reliable communication networks, such as dispatching data network, optical fiber communication, etc., to ensure the real-time transmission of data and the accurate execution of dispatching instructions.

[0044] The busbar location information of the knife switch on the dual-mother dual-section side of the main transformer protection of the intelligent station refers to the status information of which busbar the knife switch (i.e., disconnector) related to the protection of the main transformer (referred to as the main transformer) is currently connected to in the intelligent substation. In an intelligent substation with a dual-mother dual-section wiring method, the main transformer can usually be connected to four different busbars (two busbars are connected through bus tie switches, and two busbars are connected through section switches). The specific busbar connected will directly affect the action logic of the main transformer protection equipment and the configuration of the tripping output. The busbar location information of the knife switch on the dual-mother dual-section side of the main transformer protection of the intelligent station is a prerequisite for the correct action of the main transformer protection equipment, which is crucial to the safe and stable operation of the power grid.

[0045] Step S105, determining whether the insertion and withdrawal status of the GOOSE outlet soft pressure plate is consistent with the above-mentioned operation mode information;

[0046] Specifically, in the dual-bus dual-segment wiring mode, the high-voltage side of the main transformer is connected to the 220kV or 110kV bus through a knife switch. Each high-voltage side may be equipped with two sets of knife switches, one set connected to 1M (bus one) or 2M (bus two), and the other set connected to segment #1 or segment #2. The state of the knife switch (closed or open) directly reflects the electrical connection between the main transformer and a specific bus. When a knife switch is in the closed position, it means that the main transformer side to which it is connected is electrically connected to the corresponding bus. The GOOSE outlet soft pressure plate configuration of the intelligent station main transformer protection device must match the bus position information to which the knife switch is hung, that is, it must be consistent with the current operating mode information. For example, if the #2 main transformer is connected to the 220kV 1M bus through the 22021 knife switch, the main transformer protection equipment should be put into operation to trip the 220kV #1 section 2015 soft pressure plate and the 220kV #1 bus coupler 2012 soft pressure plate to ensure that when a fault occurs in the main transformer, the related section switches and bus coupler switches can be correctly tripped to avoid the expansion of the fault impact range.

[0047] Step S106, when the insertion and withdrawal status of the GOOSE outlet soft pressure plate is inconsistent with the above-mentioned operation mode information, an alarm signal is generated.

[0048] Specifically, when the GOOSE outlet soft pressure plate's throw-in / out status is inconsistent with the operating mode information, the system will generate an alarm signal, because this situation may cause abnormal operation or failure of the equipment, such as "XX substation XX main transformer protection 1 / 2 outlet soft pressure plate throw-in / out is inconsistent with the operating mode". The purpose of the alarm signal is to remind operators to check and adjust the system to ensure the normal operation of the equipment and avoid potential safety risks. By responding to the alarm signal in time, production losses and safety accidents caused by equipment failure can be avoided.

[0049] In the above-mentioned embodiment, first, the Baoxin master station obtains the main transformer protection list of the dual-mother and dual-segment smart station, and identifies the main transformer protection equipment of the smart station in the main transformer protection list; then, the Baoxin master station obtains the on / off status of the GOOSE outlet soft pressure plate of the main transformer protection equipment of the smart station by remotely patrolling the main transformer protection equipment of the smart station; the Baoxin master station obtains the bus position information of the knife switch on the dual-mother and dual-segment side of the main transformer protection of the smart station from the power grid dispatching automation system, and determines the bus position information of the knife switch as the operation mode information; finally, it is determined whether the on / off status of the GOOSE outlet soft pressure plate is consistent with the operation mode information; when the on / off status of the GOOSE outlet soft pressure plate is inconsistent with the operation mode information, an alarm signal is generated, thereby solving the problem in the prior art that it is difficult to identify the erroneous on / off status of the main transformer protection GOOSE outlet soft pressure plate for the smart substation with dual-mother and dual-segment wiring.

[0050] In one embodiment of the present application, the Baoxin master station obtains a dual-mother and dual-segment smart station main transformer protection list, including: the above-mentioned Baoxin master station obtains a substation list with a dual-mother and dual-segment wiring method; the above-mentioned Baoxin master station automatically reads the model information of all smart station main transformer protection devices connected to the above-mentioned Baoxin master station according to the above-mentioned substation list, and generates the above-mentioned smart station main transformer protection list.

[0051] Specifically, the Baoxin master station first obtains a list of substations with a dual-bus dual-section wiring mode from the power grid dispatching automation system. The dual-bus dual-section wiring mode is a configuration for improving the reliability and flexibility of the power grid, in which the busbar system of the substation is designed to connect two buses through a bus tie switch, and at the same time, two segmented buses are connected through a segment switch to form a four-bus structure. The purpose of obtaining a list of substations with a dual-bus dual-section wiring mode is to determine which substations' main transformer protection equipment needs to be monitored. The Baoxin master station further automatically reads the model information of the main transformer protection equipment in all smart stations connected to its system based on the above-mentioned substation list. Smart stations refer to substations that use intelligent equipment and digital information transmission technology. Compared with traditional substations, smart stations have a higher level of automation and information integration. The main transformer protection equipment is an automated device in the smart station used to monitor and protect the main transformer from damage due to abnormal conditions such as overload and short circuit, and can transmit control signals through GOOSE messages. The Baoxin master station uses the read model information of the main transformer protection equipment to identify whether it is an intelligent main transformer protection equipment with GOOSE export soft pressure plate function. Based on the above acquisition and identification steps, the Baoxin master station generates an intelligent station main transformer protection list, which includes all intelligent main transformer protection devices with GOOSE export soft pressure plate function in the substation with double mother and double segment wiring. The intelligent station main transformer protection list is the basis for the subsequent remote inspection and status comparison of the GOOSE export soft pressure plate, ensuring that the Baoxin master station can monitor all relevant protection devices.

[0052] In a specific embodiment, the above-mentioned Baoxin master station obtains a list of substations with a dual-mother dual-segment wiring method, including: the above-mentioned Baoxin master station obtains the first wiring method information of the 220kV bus and the second wiring method information of the 110kV bus from the power grid dispatching automation system; determines that the substation with a dual-mother dual-segment wiring method is the target substation based on the above-mentioned first wiring method information and the above-mentioned second wiring method information; integrates the information of the above-mentioned target substation into a list of substations with a dual-mother dual-segment wiring method, and the information of the above-mentioned target substation includes the name of the above-mentioned target substation, the ID of the above-mentioned target substation and the wiring method characteristics of the above-mentioned target substation.

[0053] Specifically, the Baoxin master station determines which substations use the dual-mother dual-section wiring method based on the first wiring method information (220kV part) and the second wiring method information (110kV part) obtained. This process involves analyzing and matching the wiring method information to identify substations with specific wiring structures. For example, the Baoxin master station will check whether the information contains a description of four buses (two main buses and two segmented buses), as well as the existence of bus tie switches and segment switches, which are all characteristics of the dual-mother dual-section wiring method. Once the target substation is determined, the Baoxin master station will integrate the relevant information of these substations into a list of substations with dual-mother dual-section wiring methods, which includes the name, ID (i.e., the unique identifier of the substation, used to distinguish different substations) of each target substation, and a description of the wiring method characteristics. The list of substations with dual-mother dual-section wiring methods is the basis for the subsequent remote inspection and status comparison of the Baoxin master station to ensure that all substations using the dual-mother dual-section wiring method can be effectively monitored. Through the above steps, the Baoxin master station can accurately identify and integrate substation information with specific wiring methods, providing a comprehensive data foundation for the implementation of automated monitoring and alarm.

[0054] In a specific embodiment, a substation with a dual-mother dual-segment wiring mode is determined as a target substation according to the above-mentioned first wiring mode information and the above-mentioned second wiring mode information, including: when the above-mentioned 220kV bus has a switch with a first preset number, a switch with a second preset number, a switch with a third preset number and a fourth preset number at the same time, the above-mentioned 220kV bus is determined to be a dual-mother dual-segment wiring; when the above-mentioned 110kV bus has a switch with a fifth preset number, a switch with a sixth preset number, a switch with a seventh preset number and a switch with an eighth preset number at the same time, the above-mentioned 110kV bus is determined to be a dual-mother dual-segment wiring; the substation with the above-mentioned dual-mother dual-segment wiring is determined as the above-mentioned target substation.

[0055] Specifically, the Baoxin master station first obtains a list of substations with 500kV and 220kV voltage levels. For each substation in the list, the Baoxin master station further analyzes the wiring method of its 220kV and 110kV busbars. This process is mainly achieved by checking whether there are switches with specific numbers. These switches are the iconic equipment of the double-bus double-section wiring method:

[0056] 220kV busbar: If there are switches numbered 2012, 2015, 2026 and 2056 at the same time, it means that the 220kV busbar of the substation adopts a double-bus double-section wiring method. Specifically, switches 2012 and 2015 represent bus tie switches, while switches 2026 and 2056 represent section switches, which together constitute a double-bus double-section wiring structure.

[0057] 110kV busbar: Similarly, if there are switches numbered 1012, 1015, 1026, and 1056, it indicates that the 110kV busbar is also configured for dual bus and dual section connection. These switches also include bus tie switches and section switches, following the same logic as the 220kV busbar.

[0058] Identifying the presence of these switches can help the Baoxin master station accurately determine the busbar wiring method of the substation, thereby determining which substations need further attention and monitoring of the status of the GOOSE outlet soft pressure plate.

[0059] After determining the substation with dual-mother dual-section wiring mode, in order to carry out subsequent monitoring and data interaction, the Secure File Transfer Protocol (SFTP) is used for data transmission between the Baoxin master station and the substation. SFTP is a secure file transfer method based on the SSH (Secure Shell) protocol, which can provide an encrypted transmission channel to ensure the security and integrity of the data. By using the SFTP protocol to transmit data, the Baoxin master station can safely obtain and update the operating status and equipment configuration information of the substation.

[0060] In summary, the method of identifying double-mother double-section wiring can accurately determine whether the substation adopts this wiring method by checking the switchgear with a specific number. By utilizing the secure data transmission capability of the SFTP protocol, the Baoxin master station can communicate effectively with the substation, providing a technical basis for realizing the automated monitoring and alarm of the GOOSE outlet soft pressure plate of the main transformer protection.

[0061] In one embodiment of the present application, the above-mentioned security master station identifies the smart station main transformer protection device in the above-mentioned smart station main transformer protection list, including: querying the protection device ledger, and determining that the device with a model suffix as a preset model suffix is ​​the above-mentioned smart station main transformer protection device.

[0062] Specifically, the Baoxin master station first accesses the protection equipment ledger database it maintains. This ledger database contains detailed information on all protection devices connected to the Baoxin system, such as device name, model, installation location, functional characteristics, etc. The Baoxin master station sets a preset model suffix to distinguish the main transformer protection devices of the smart station. This suffix is ​​usually a specific character sequence related to the intelligent features of the device, such as "-DG-N". Such a suffix appears in the device model, indicating that the device supports digital communication, such as GOOSE message transmission, and is suitable for the smart station environment. By querying the protection equipment ledger and matching the suffix for the model of each device, the Baoxin master station can filter out all devices with the preset model suffix. These devices are confirmed as the main transformer protection devices of the smart station. They have digital communication capabilities and functions compatible with the smart station and are the main objects for the Baoxin master station to implement remote inspection and status comparison of the GOOSE export soft pressure plate. By screening out the main transformer protection devices of the smart station, the Baoxin master station can concentrate resources and attention, automatically monitor the status of the GOOSE export soft pressure plates of these devices, promptly discover and handle configuration inconsistencies, avoid false operation or refusal of protection equipment, and thus improve the safety and stability of power grid operation.

[0063] In one embodiment of the present application, the above-mentioned intelligent station main transformer protection device has a remote communication interface to obtain the activation and deactivation status of the GOOSE outlet soft pressure plate of the above-mentioned intelligent station main transformer protection device, including: the above-mentioned security master station is connected to the remote communication interface of the above-mentioned intelligent station main transformer protection device to obtain the activation and deactivation status of the GOOSE outlet soft pressure plate of the above-mentioned intelligent station main transformer protection device.

[0064] Specifically, in order to realize digital monitoring and management, the main transformer protection equipment in the smart station is usually designed with a remote communication interface. This interface supports data exchange with external monitoring systems, such as the Baoxin master station, including the real-time monitoring of equipment status information through GOOSE message transmission. The existence of the remote communication interface enables the main transformer protection equipment to be part of the smart grid system and realize remote equipment status monitoring and management. The Baoxin master station needs to establish a connection with the remote communication interface of the main transformer protection equipment of the smart station through a specific network protocol and security mechanism. This connection is usually based on a standard power communication protocol, such as DL / T 860 (ie IEC 61850), which defines the rules for communication between smart devices, including the transmission of GOOSE messages. Through this connection, the Baoxin master station can access the internal status data of the main transformer protection equipment of the smart station in real time. Once the Baoxin master station is successfully connected to the remote communication interface of the main transformer protection equipment of the smart station, it can obtain the GOOSE outlet soft pressure plate of the equipment. The status information of the throw and retraction. The GOOSE output soft pressure plate is a logic control mechanism used to remotely control whether the trip output of the protection device is activated. By reading the status of these soft pressure plates, the Baoxin master station can understand whether the protection device is correctly configured according to the current power grid operation mode, thereby determining whether there is a configuration error or inconsistency.

[0065] In summary, the remote communication interface of the main transformer protection equipment of the smart station is the key to realizing the automatic monitoring of the Baoxin master station. It not only ensures that the Baoxin master station can remotely access the equipment status, but also can obtain the real-time status of the GOOSE export soft pressure plate, which is crucial for realizing the automatic alarm method of the GOOSE export soft pressure plate of the main transformer protection of the smart station. This method improves the monitoring efficiency, ensures the safety and reliability of the power grid operation, and avoids power grid accidents caused by improper configuration of protection equipment.

[0066] In one embodiment of the present application, after the remote inspection of the main transformer protection device of the above-mentioned intelligent station, the above-mentioned method also includes: the above-mentioned Baoxin main station checks whether there are other main transformer protection devices using the above-mentioned dual-mother dual-segment wiring method that need to be inspected; if there are no other main transformer protection devices using the above-mentioned dual-mother dual-segment wiring method that need to be inspected, the inspection process is ended; if there are other main transformer protection devices using the above-mentioned dual-mother dual-segment wiring method that need to be inspected, the inspection is continued.

[0067] Specifically, the Baoxin master station will check whether there are other main transformer protection devices that use the dual-mother and dual-section wiring method that have not been inspected. This check is based on the previously generated intelligent station main transformer protection list, which records the information of the main transformer protection devices that use the dual-mother and dual-section wiring method in all target substations. By querying the list, the Baoxin master station can identify which devices have been inspected and which devices need to be inspected. If the Baoxin master station confirms that the inspected devices cover all the main transformer protection devices that use the dual-mother and dual-section wiring method, that is, there are no remaining devices in the list that need to be inspected, it will end the inspection process. This indicates that the GOOSE export soft pressure plate status check of all relevant devices has been completed. If no new devices are connected or the operating mode is changed in the future, there is no need to repeat the inspection. However, if the Baoxin master station finds that there are other main transformer protection devices that use the dual-mother and dual-section wiring method in the list that have not been inspected, it will automatically continue the inspection process and check the status of the remaining devices. This cycle continues until all devices in the list have been inspected, ensuring comprehensive equipment monitoring and status comparison.

[0068] This closed-loop operation of the inspection process not only improves the monitoring efficiency, but also ensures the comprehensiveness and continuity of monitoring. In the operation of smart grids, due to the dynamic changes in substation equipment and operation modes, continuous and comprehensive inspections are necessary to promptly discover and handle inconsistencies or errors in the configuration of the GOOSE outlet soft pressure plate, avoid potential grid failures or malfunctions of protection equipment, and thus maintain the safety and stability of grid operation. At the same time, this method also reflects the automation level of equipment status monitoring and management in the smart grid dispatching automation system, and is an important guarantee for the high-efficiency and high-quality operation of smart substations.

[0069] In one embodiment of the present application, determining whether the throw-in / out state of the above-mentioned GOOSE outlet soft pressure plate is consistent with the above-mentioned operating mode information includes: when the closed state of the first bus side knife switch and the closed state of the second bus side knife switch match the throw-in / out state of the above-mentioned GOOSE outlet soft pressure plate, determining that the throw-in / out state of the above-mentioned GOOSE outlet soft pressure plate is consistent with the above-mentioned operating mode information; when the closed state of the first bus side knife switch and the closed state of the second bus side knife switch do not match the throw-in / out state of the above-mentioned GOOSE outlet soft pressure plate, determining that the throw-in / out state of the above-mentioned GOOSE outlet soft pressure plate is inconsistent with the above-mentioned operating mode information.

[0070] Specifically, when the security master station obtains the closing status of the first bus side switch (for example, the switch connecting the main transformer to the first bus) and the second bus side switch (for example, the switch connecting the main transformer to the second bus), it will check whether the closing status of these switches matches the GOOSE outlet soft pressure plate throw-in and throw-out status set in the current main transformer protection device. If the first bus side switch is in the closed position and the corresponding GOOSE outlet soft pressure plate (such as the soft pressure plate that jumps the first bus section) is also in the put-in state, and the second bus side switch is in the open position and the corresponding GOOSE outlet soft pressure plate (such as the soft pressure plate that jumps the second bus section) is in the exit state, this indicates that the throw-in and throw-out status of the GOOSE outlet soft pressure plate is consistent with the operation mode information. Vice versa, that is, if the first bus side switch is in the open position and the GOOSE outlet soft pressure plate is exited, the second bus side switch is in the closed position and the GOOSE outlet soft pressure plate is put in, it is also a manifestation of consistent status. The principle on which this consistency judgment is based is that the GOOSE outlet soft pressure plate of the main transformer protection device should be thrown or retracted accordingly according to the closing state of the busbar side knife switch connected to the main transformer, so as to ensure that the protection device can make a correct response under a specific operating mode to prevent false operation or refusal to operate.

[0071] If the closed state of the knife switch on the first bus side does not match the throw-in / out state of the corresponding GOOSE export soft pressure plate, or the closed state of the knife switch on the second bus side does not match the throw-in / out state of the corresponding GOOSE export soft pressure plate, the Baoxin master station will determine that the throw-in / out state of the GOOSE export soft pressure plate is inconsistent with the operation mode information. For example, if the knife switch on the first bus side is in the closed position, but the corresponding GOOSE export soft pressure plate (such as the soft pressure plate that jumps the first bus section) is in the withdrawn state, or the knife switch on the second bus side is in the closed position, but the corresponding GOOSE export soft pressure plate (such as the soft pressure plate that jumps the second bus section) is in the engaged state, this will be regarded as inconsistent status. Inconsistent status indicates that the GOOSE export soft pressure plate configuration of the main transformer protection device may be incorrect, requiring further manual inspection or automatic triggering of an alarm so that the operation and maintenance personnel can adjust the configuration in time to ensure the safety of the power grid operation.

[0072] Specifically, Figure 2 The primary wiring diagram of the 220kV side of the 220kV example station is shown. Figure 2 As shown, the 220kV busbar is a double-bus double-section connection. The high-voltage side (i.e., 220kV side) of the #2 main transformer (i.e., the second main transformer) is currently connected to the 1M busbar (i.e., the first section of the first group of buses). Because the knife switch 22021 on the 1M side is in the closed position (i.e., closed state), it means that the transformer is electrically connected to the 1M busbar section. At the same time, the knife switch on the 2M busbar side is in the open position (i.e., disconnected state), indicating that the #2 main transformer is not connected to the 2M busbar section. According to this operating mode, in order to prevent false operation during a fault, the main protection of the #2 main transformer should be configured with its GOOSE outlet soft pressure plate according to the following principles:

[0073] Put 220kV #1 section 2015 soft pressure plate into operation: This indicates that if a fault occurs on the 1M bus or at the #1 section circuit breaker 2015, the main protection of the #2 main transformer can control the corresponding circuit breaker through this soft pressure plate to isolate the fault area and prevent the fault from expanding.

[0074] Put the 220kV #1 bus tie 2012 soft pressure plate into operation: Similarly, if the bus tie circuit breaker 2012 between the 1M bus and another set of busbars fails, the main protection of the #2 main transformer can trigger the circuit breaker to trip through this soft pressure plate to protect the #2 main transformer from the fault.

[0075] Exit the 220kV #2 section 2026 soft pressure plate: Since the #2 main transformer is not currently connected to the 2M bus section, there is no need to control the #2 section circuit breaker 2026 through this soft pressure plate to avoid erroneously affecting the operation of the #2 main transformer when a fault occurs in the 2M bus section.

[0076] The Baoxin master station (i.e., the protection information master station) receives real-time substation primary system operation status information, including the opening and closing status of each switch, from the power grid dispatching automation system through the network. The Baoxin master station will automatically analyze this information to determine the actual current operation mode of the #2 main transformer, and based on this, check whether the configuration of the main transformer protection GOOSE outlet soft pressure plate is consistent with the operation mode. If the Baoxin master station finds that the configuration of the soft pressure plate is inconsistent with the expected operation mode, that is, the configuration of the main protection GOOSE outlet soft pressure plate of the #2 main transformer is contrary to the above principles, it will generate an alarm signal: "The 220kV example station #2 main transformer main protection outlet soft pressure plate is inconsistent with the operation mode".

[0077] Through the above comparative analysis, the Baoxin master station can accurately determine whether the GOOSE export soft pressure plate's activation and deactivation status is correctly configured according to the current operation mode. This automated consistency check can not only improve operation and maintenance efficiency, but also improve the safety and reliability of power grid operation.

[0078] In order to enable those skilled in the art to more clearly understand the technical solution of the present application, the implementation process of the method for alarming the soft pressure plate status of the GOOSE outlet of the main transformer protection of the intelligent station of the present application will be described in detail below in combination with specific embodiments.

[0079] This embodiment relates to a specific method for alarming the soft pressure plate status of the GOOSE outlet of the main transformer protection of the intelligent station. The overall flow chart is as follows: Figure 3 As shown, the following steps are included:

[0080] Step S1: the Baoxin master station obtains a list of substations with a dual-mother dual-section wiring mode.

[0081] Step S2: The Baoxin master station automatically reads the model information of all smart station main transformer protection devices connected to the Baoxin master station according to the substation list, and generates a smart station main transformer protection list.

[0082] Step S3: the Baoxin master station obtains the activation and deactivation status of the GOOSE outlet soft pressure plate of the main transformer protection device of the smart station by remotely patrolling the main transformer protection device of the smart station.

[0083] Step S4: the Baoxin master station obtains the bus position information of the switch on the dual-bus dual-section side of the main transformer protection of the intelligent station from the power grid dispatching automation system, and determines the bus position information of the switch as the operation mode information.

[0084] Step S5: Determine whether the insertion and withdrawal status of the GOOSE outlet soft pressure plate is consistent with the operation mode information.

[0085] Step S6: When the insertion and withdrawal status of the GOOSE outlet soft pressure plate is inconsistent with the operation mode information, an alarm signal is generated and sent to the operation and maintenance personnel through the Elink system.

[0086] Step S7: When the activation and deactivation status of the GOOSE outlet soft pressure plate is consistent with the operation mode information, the Baoxin master station checks whether there are other main transformer protection devices using a dual-mother and dual-segment wiring method that need to be inspected.

[0087] Step S8: If there are other main transformer protection devices that use a dual-mother dual-segment wiring method that need to be inspected, jump to step S3.

[0088] Step S9: When there is no other main transformer protection device adopting the dual-mother dual-segment wiring mode that needs to be inspected, the inspection process ends.

[0089] The embodiment of the present application also provides an alarm system for the soft pressure plate status of the GOOSE outlet of the main transformer protection of the intelligent station, including:

[0090] The security master station is used to execute any of the above-mentioned alarm methods for the soft pressure plate status of the GOOSE outlet of the main transformer protection of the intelligent station;

[0091] The Baoxin substation is connected to the Baoxin main station through the dispatching data network. The Baoxin substation includes an intelligent telemotor, an intelligent recorder, and a control substation, which is used to collect and upload main transformer protection information to the Baoxin main station;

[0092] A power grid dispatching automation system, which is connected to the above-mentioned Baoxin master station to provide bus position information of the switch on the double-bus double-section side of the main transformer protection of the intelligent station;

[0093] A web server, the web server is connected to the security main station through a forward and reverse isolation device, and is used to receive and process the alarm signal sent by the security main station;

[0094] Elink office system, the above-mentioned Elink office system communicates with the above-mentioned web server, is used to receive the above-mentioned alarm signal sent by the above-mentioned web server, and send the above-mentioned alarm signal to the operation and maintenance personnel.

[0095] Specifically, the system structure diagram is as follows: Figure 4 As shown in the figure, the Baoxin master station is the core of the entire alarm system. It is deployed in the safety zone I, connected to the power grid dispatching automation system through a firewall, connected to the Baoxin substation through the dispatching data network, and connected to the Baoxin master station web server through the forward and reverse isolation device to collect data sent by the protection device, recorder, etc. in real time. The Baoxin master station is responsible for executing the alarm method of the GOOSE outlet soft pressure plate status of the main transformer protection of the intelligent station. By collecting and analyzing the data from the Baoxin substation, comparing the operation mode information provided by the power grid dispatching automation system, it determines whether the soft pressure plate status is correct, and generates an alarm signal when inconsistency is found. The Baoxin substation is deployed in the safety zone I and consists of a variety of intelligent devices, including intelligent telemotors, intelligent recorders and control substations. These devices are connected to the Baoxin master station through the dispatching data network, and are responsible for collecting real-time information of the main transformer protection equipment in the substation, such as the status information of the GOOSE outlet soft pressure plate, and uploading this information to the Baoxin master station for analysis and use. Among them, the intelligent telemotors are used to realize the functions of telesignaling, telemetering, remote control, and remote adjustment of primary and secondary equipment. The power grid dispatching automation system is deployed in the safety zone I and is used to monitor and control the primary and secondary equipment of the substation. The power grid dispatching automation system is an important source for the Baoxin master station to obtain information on the operation mode of the intelligent station. It provides key operation data such as the bus position of the knife switch on the double-bus double-section side of the main transformer protection through the interface with the Baoxin master station. These data are crucial for the Baoxin master station to judge the correctness of the soft pressure plate state. The web server is deployed in the safety zone III and connected to the Baoxin master station through the forward and reverse isolation device. It receives the alarm signal sent by the Baoxin master station, processes it, and prepares to send the alarm information to relevant personnel. The web server usually has a user-friendly interface for operation and maintenance personnel to access and respond to alarms. The Elink office system is deployed in the safety zone IV and refers to a dedicated office information transmission system for the power grid. The Elink office system communicates with the web server and is responsible for receiving the alarm signal forwarded by the web server and sending it to the relevant operation and maintenance personnel in a timely manner to ensure that the operation and maintenance personnel are aware of the abnormal status of the substation protection equipment at the first time. The Elink office system usually has a message push function, which can quickly and accurately send alarm information to the designated recipient.

[0096] The dispatching data network is a key communication network used to transmit power dispatching automation and protection information in smart grids. Figure 4 As shown in the figure, the dispatching data network connects the Baoxin master station and the Baoxin substation, so that the Baoxin master station can collect and monitor the protection equipment information from the smart station in real time, including the status of the GOOSE export soft pressure plate. This connection mechanism is the key to realizing the automatic alarm method of the GOOSE export soft pressure plate of the main transformer protection of the smart station, ensuring that the Baoxin master station can timely and accurately determine whether the status of the soft pressure plate matches the operation mode of the power grid. Once a mismatch is found, an alarm can be quickly generated and relevant personnel can be notified, thereby improving the safety and efficiency of the power grid operation. The characteristics and functions of the dispatching data network are as follows:

[0097] Security: The dispatching data network is usually physically isolated from the public Internet and other non-critical business networks, and uses dedicated network equipment and security strategies to ensure that the transmission of key data of the power system is not subject to external interference and attacks, thereby ensuring the security of power grid operation.

[0098] Real-time: The operation and control data of the power system needs to be transmitted and processed in a very short time. The dispatching data network is designed with high bandwidth and low latency characteristics, which can meet the needs of real-time monitoring and control of the power system and ensure the timeliness of the data.

[0099] Reliability: The dispatching data network adopts redundant design and fault self-healing mechanism, which can ensure that the transmission of key data is not affected even if part of the network fails. In addition, it also has functions such as data encryption, identity authentication and access control to enhance the reliability of data transmission.

[0100] Standardization: The dispatching data network follows the standard protocols in the power industry, such as DL / T 860 (IEC 61850). These standard protocols define the communication rules between intelligent devices in the substation, including the transmission of GOOSE messages, to ensure smooth and standardized data exchange between devices.

[0101] Functional scalability: The design of the dispatching data network takes into account the needs of future power system upgrades and expansions. It can support the access of new types of smart devices and new communication protocols, providing a basis for the continuous optimization of the power grid dispatching automation system.

[0102] like Figure 4 As shown in the figure, the measurement and control device communicates with the intelligent remote motor. The measurement and control device is a key device in the intelligent substation. It integrates measurement, control and monitoring functions and is used to monitor and control the primary equipment in the substation, such as circuit breakers, disconnectors (knife switches), transformers, etc., as well as some parts of the secondary system. The main functions and effects of the measurement and control device include:

[0103] Data collection: The measurement and control device can collect the status information of primary equipment, such as the opening and closing status of circuit breakers, the closing status of disconnectors, current and voltage and other electrical quantities. These data are used to reflect the operation status of equipment in the substation and are an important basis for the Baoxin master station to conduct status analysis and alarm judgment.

[0104] Control operation: The measurement and control device can receive control commands from the Baoxin master station or other dispatching automation systems to remotely control the primary equipment. For example, it can execute dispatching instructions, close or open the circuit breaker, adjust the closing state of the knife switch, and thus change the operation mode of the power grid.

[0105] Communication function: The measurement and control device exchanges data with the Baoxin master station, Baoxin substation, remote motor and other intelligent devices through standard communication protocols such as DL / T 860 (IEC 61850). It can not only upload the collected equipment status data, but also receive and execute control commands, realizing two-way data transmission.

[0106] Monitoring and protection coordination: The measurement and control device works closely with the protection device in the smart substation and can reflect the operating status and action information of the protection device in real time. Although it is not directly mentioned in this technical disclosure document, it plays an indirect supporting role when the Baoxin master station judges the status of the GOOSE outlet soft pressure plate, because some status information of the protection device may be transmitted to the Baoxin master station through the measurement and control device.

[0107] Fault diagnosis and early warning: The measurement and control device can conduct preliminary analysis on the collected data, determine whether there is any abnormality or fault in the equipment, generate early warning information, and promptly notify the Baoxin master station or other monitoring systems to achieve early detection and processing of faults.

[0108] Protection devices are key devices in smart substations used to detect and analyze the operating status of the power system to protect power equipment from damage caused by faults. They are directly connected to the primary equipment of the power grid (such as transformers, circuit breakers, busbar sections, etc.) and are responsible for monitoring the operating status of these devices and electrical quantities in the power system, such as current, voltage, and frequency, to determine whether there are abnormal conditions or faults. Figure 4 As shown in the figure, the protection device is connected to the Baoxin substation. It uploads real-time protection device status and action information to the Baoxin main station through the Baoxin substation equipment such as intelligent telemotors and intelligent recorders. Based on this information and the grid operation status provided by the grid dispatching automation system, the Baoxin main station can determine whether the GOOSE export soft pressure plate configuration in the protection device is correct, thereby realizing the automatic inspection and alarm function of the protection device configuration status. This mechanism helps operation and maintenance personnel to promptly discover and correct configuration errors of protection equipment and ensure the safety and stability of grid operation.

[0109] The above alarm system realizes automatic monitoring and abnormal alarm of the status of the soft pressure plate of the GOOSE outlet of the main transformer protection of the intelligent station through the collaborative work between various components. The Baoxin substation is responsible for data collection and upload, the Baoxin main station is responsible for data analysis and alarm signal generation, and the web server and Elink office system are responsible for the processing and transmission of alarm information, which jointly ensure the safety and stability of power grid operation. The system has a high degree of automation and fast response speed. It can effectively prevent and respond to configuration errors of the main transformer protection equipment in a timely manner, avoid the possible protection malfunction or refusal to operate due to improper soft pressure plate status, and reduce the risk of power grid operation.

[0110] An embodiment of the present invention provides a computer-readable storage medium, which includes a stored program, wherein when the program is running, the device where the computer-readable storage medium is located is controlled to execute the alarm method for the soft pressure plate status of the GOOSE export of the main transformer protection of the intelligent station.

[0111] Specifically, the alarm method of the soft pressure plate status of the GOOSE outlet of the main transformer protection of the intelligent station includes:

[0112] Step S101, the security master station obtains a protection list of a main transformer of a dual-mother and dual-segment intelligent station.

[0113] Specifically, the Baoxin master station is a protection device in a power system, used to monitor and protect the main transformer. Dual-mother and dual-section means that the main transformer has two inputs and two outputs, which are connected to different buses and sections respectively. An intelligent station refers to a power station equipped with intelligent functions. The main transformer protection list refers to a list of various protection functions and parameters in the main transformer protection system. By obtaining the main transformer protection list of the dual-mother and dual-section intelligent station, the Baoxin master station can effectively obtain and manage the main transformer protection equipment information related to the dual-mother and dual-section wiring method, and provide an accurate data basis for subsequent soft pressure plate status inspections and operation mode matching.

[0114] Step S102: the above-mentioned security master station identifies the smart station main transformer protection device in the above-mentioned smart station main transformer protection list.

[0115] Specifically, the main transformer protection equipment of the smart station refers to the equipment used to protect and control the main transformer in the power system. In the main transformer protection list of the smart station, all the equipment related to the main transformer protection is listed, including protection relays, current transformers, voltage transformers, etc. The function of these devices is to protect the main transformer from overload, short circuit and other faults to ensure the safe operation of the power system. By identifying the main transformer protection equipment in the smart station, the Baoxin main station can monitor the operating status of these devices in real time. Through the main transformer protection list of the smart station, the operation and maintenance personnel can clearly understand the location, status and parameter settings of each device, which is convenient for them to carry out maintenance and troubleshooting.

[0116] Step S103, the above-mentioned Baoxin master station obtains the activation and deactivation status of the GOOSE outlet soft pressure plate of the above-mentioned main transformer protection device of the above-mentioned smart station by remotely patrolling the above-mentioned main transformer protection device of the above-mentioned smart station.

[0117] Specifically, the Baoxin master station remotely patrols the main transformer protection equipment of the intelligent station, which means monitoring and managing the operating status and parameters of the main transformer protection equipment of the intelligent station through the network or other remote communication methods. GOOSE (Generic Object Oriented Substation Event) is a communication protocol used in intelligent power systems, which is used to quickly transmit status and event information between protection devices. The on / off status of the GOOSE export soft pressure plate refers to the on or off status of the soft pressure plate in the control system. When the soft pressure plate is in the on state, it means that the soft pressure plate has been started and can work normally. Otherwise, it means that the soft pressure plate is in the abdicated state and cannot work or has stopped working. The on / off status of the soft pressure plate is usually controlled by a signal or instruction in the control system, which is used to control the operation and stop of the soft pressure plate. The main transformer protection GOOSE export soft pressure plate includes the 220kV#1 segment 2015 soft pressure plate, the 220kV#2 segment 2026 soft pressure plate, the 220kV#1 busbar 2012 soft pressure plate, and so on. In actual applications, the soft pressure plate's throw-in and throw-out status can be set and adjusted through the monitoring system or control panel to ensure that the soft pressure plate can work normally when needed, and can stop running when not needed to save energy and extend the service life of the equipment. The Baoxin master station obtains the throw-in and throw-out status of the GOOSE export soft pressure plate by remotely patrolling the main transformer protection equipment of the intelligent station, so as to monitor and control the operating status of the protection equipment of the main transformer. This can realize remote monitoring and operation, and improve the reliability and safety of the system.

[0118] Step S104, the above-mentioned security master station obtains the bus position information of the switch on the double-bus double-section side of the main transformer protection of the above-mentioned intelligent station from the power grid dispatching automation system, and determines the bus position information of the switch as the operation mode information.

[0119] Specifically, the power grid dispatching automation system (Operation Control System, OCS) is an integrated, highly automated computer system used for real-time monitoring and control of the operating status of the power system. The power grid dispatching automation system provides decision support for dispatchers by collecting, processing and analyzing the operating data of various equipment in the power grid to maintain the stable, safe and economical operation of the power grid.

[0120] The busbar location information of the knife switch on the dual-mother dual-section side of the main transformer protection of the intelligent station refers to the status information of which busbar the knife switch (i.e., disconnector) related to the protection of the main transformer (referred to as the main transformer) is currently connected to in the intelligent substation. In an intelligent substation with a dual-mother dual-section wiring method, the main transformer can usually be connected to four different busbars (two busbars are connected through bus tie switches, and two busbars are connected through section switches). The specific busbar connected will directly affect the action logic of the main transformer protection equipment and the configuration of the tripping output. The busbar location information of the knife switch on the dual-mother dual-section side of the main transformer protection of the intelligent station is a prerequisite for the correct action of the main transformer protection equipment, which is crucial to the safe and stable operation of the power grid.

[0121] Step S105, determining whether the insertion and withdrawal status of the GOOSE outlet soft pressure plate is consistent with the above-mentioned operation mode information.

[0122] Specifically, in the dual-bus dual-segment wiring mode, the high-voltage side of the main transformer is connected to the 220kV or 110kV bus through a knife switch. Each high-voltage side may be equipped with two sets of knife switches, one set connected to 1M (bus one) or 2M (bus two), and the other set connected to segment #1 or segment #2. The state of the knife switch (closed or open) directly reflects the electrical connection between the main transformer and a specific bus. When a knife switch is in the closed position, it means that the main transformer side to which it is connected is electrically connected to the corresponding bus. The GOOSE outlet soft pressure plate configuration of the intelligent station main transformer protection device must match the bus position information to which the knife switch is hung, that is, it must be consistent with the current operating mode information. For example, if the #2 main transformer is connected to the 220kV 1M bus through the 22021 knife switch, the main transformer protection equipment should be put into operation to trip the 220kV #1 section 2015 soft pressure plate and the 220kV #1 bus coupler 2012 soft pressure plate to ensure that when a fault occurs in the main transformer, the related section switches and bus coupler switches can be correctly tripped to avoid the expansion of the fault impact range.

[0123] Step S106, when the insertion and withdrawal status of the GOOSE outlet soft pressure plate is inconsistent with the above-mentioned operation mode information, an alarm signal is generated.

[0124] Specifically, when the GOOSE outlet soft pressure plate's throw-in / out status is inconsistent with the operating mode information, the system will generate an alarm signal, because this situation may cause abnormal operation or failure of the equipment, such as "XX substation XX main transformer protection 1 / 2 outlet soft pressure plate throw-in / out is inconsistent with the operating mode". The purpose of the alarm signal is to remind operators to check and adjust the system to ensure the normal operation of the equipment and avoid potential safety risks. By responding to the alarm signal in time, production losses and safety accidents caused by equipment failure can be avoided.

[0125] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0126] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0127] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0128] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0129] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0130] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0131] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0132] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0133] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0134] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An alarm method for the soft pressure plate status of the GOOSE outlet of the main transformer protection of an intelligent station, characterized in that: include: The Baoxin master station obtains the main transformer protection list of the dual-mother and dual-segment intelligent station; The security master station identifies the smart station main transformer protection device in the smart station main transformer protection list; The security master station obtains the activation and deactivation status of the GOOSE outlet soft pressure plate of the main transformer protection device of the smart station by remotely patrolling the main transformer protection device of the smart station; The security master station obtains the bus position information of the switch on the dual-bus dual-section side of the main transformer protection of the intelligent station from the power grid dispatching automation system, and determines the bus position information of the switch as the operation mode information; Determine whether the insertion and withdrawal status of the GOOSE outlet soft pressure plate is consistent with the operation mode information; When the insertion and withdrawal status of the GOOSE outlet soft pressure plate is inconsistent with the operation mode information, an alarm signal is generated.

2. The alarm method according to claim 1, characterized in that: The Baoxin master station obtains the dual-mother dual-segment intelligent station main transformer protection list, including: The security master station obtains a list of substations with a dual-mother dual-segment wiring mode; The security master station automatically reads the model information of all intelligent station main transformer protection devices connected to the security master station according to the substation list, and generates the intelligent station main transformer protection list.

3. The alarm method according to claim 2, characterized in that: The Baoxin master station obtains a list of substations with double-mother and double-section wiring mode, including: The security master station obtains the first connection mode information of the 220kV bus and the second connection mode information of the 110kV bus from the power grid dispatching automation system; Determine, according to the first wiring mode information and the second wiring mode information, a substation with a double-mother double-segment wiring mode as a target substation; The information of the target substation is integrated into a list of substations with a dual-mother dual-section wiring mode, wherein the information of the target substation includes the name of the target substation, the ID of the target substation and the wiring mode characteristics of the target substation.

4. The alarm method according to claim 3, characterized in that: Determining a substation with a dual-mother and dual-section wiring mode as a target substation according to the first wiring mode information and the second wiring mode information includes: In the case that the 220kV busbar has a switch with a first preset number, a switch with a second preset number, a switch with a third preset number, and a switch with a fourth preset number at the same time, determining that the 220kV busbar is a double-bus double-section connection; In the case that the 110 kV busbar has a switch with a fifth preset number, a switch with a sixth preset number, a switch with a seventh preset number, and a switch with an eighth preset number at the same time, it is determined that the 110 kV busbar is a double-bus double-section connection; A substation having the double-mother double-section connection is determined as the target substation.

5. The alarm method according to claim 1, characterized in that: The security master station identifies the smart station main transformer protection device in the smart station main transformer protection list, including: Query the protection equipment inventory and determine that the device with the model suffix being the preset model suffix is ​​the main transformer protection device of the smart station.

6. The alarm method according to claim 1, characterized in that: The intelligent station main transformer protection device has a remote communication interface, and obtains the GOOSE outlet soft pressure plate of the intelligent station main transformer protection device. The state of the switch includes: The security master station is connected to the remote communication interface of the main transformer protection device of the intelligent station to obtain the activation and deactivation status of the GOOSE outlet soft pressure plate of the main transformer protection device of the intelligent station.

7. The alarm method according to claim 1, characterized in that: After remotely patrolling the main transformer protection device of the intelligent station, the method further includes: The security master station checks whether there are other main transformer protection devices using the dual-mother dual-segment wiring method that need to be inspected; When there is no other main transformer protection device adopting the dual-mother dual-segment wiring method that needs to be inspected, the inspection process is terminated; When there are other main transformer protection devices adopting the dual-mother dual-segment wiring method that need to be inspected, the inspection continues.

8. The alarm method according to claim 1, characterized in that: Determine whether the throw-in and throw-out status of the GOOSE outlet soft pressure plate is consistent with the operation mode information, including: When the closed state of the first busbar side knife switch, the closed state of the second busbar side knife switch and the throw-in / out state of the GOOSE outlet soft pressure plate match, determining that the throw-in / out state of the GOOSE outlet soft pressure plate is consistent with the operation mode information; When the closed state of the first bus side knife switch, the closed state of the second bus side knife switch and the throw and retract state of the GOOSE outlet soft pressure plate do not match, it is determined that the throw and retract state of the GOOSE outlet soft pressure plate is inconsistent with the operation mode information.

9. An alarm system for the soft pressure plate status of the GOOSE outlet of the main transformer protection of an intelligent station, characterized in that: include: A security master station, used to execute the alarm method for the soft pressure plate status of the GOOSE outlet of the main transformer protection of the intelligent station according to any one of claims 1 to 8; A Baoxin substation, which is connected to the Baoxin main station through a dispatching data network. The Baoxin substation includes an intelligent telemotor, an intelligent recorder, and a control substation, and is used to collect and upload main transformer protection information to the Baoxin main station; A power grid dispatching automation system, which is connected to the security master station to provide bus position information of the switch on the dual-bus dual-segment side of the main transformer protection of the intelligent station; A web server, the web server is connected to the security main station through a forward and reverse isolation device, and is used to receive and process the alarm signal sent by the security main station; Elink office system, the Elink office system communicates with the web server, is used to receive the alarm signal sent by the web server, and send the alarm signal to the operation and maintenance personnel.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein when the program is running, the device where the computer-readable storage medium is located is controlled to execute the alarm method for the soft pressure plate status of the GOOSE outlet of the main transformer protection of the intelligent station as described in any one of claims 1 to 8.

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