Alarm method for GOOSE outlet soft pressure plate status of main transformer protection in intelligent station

Abstract

The present application provides an alarm method for the status of the soft pressure plate at the GOOSE outlet of the main transformer protection of an intelligent station. The method includes: the Baoxin main station obtains the dual-mother dual-segment intelligent station main transformer protection list, and identifies the intelligent station main transformer protection equipment in the intelligent station main transformer protection list, and obtains the on / off status of the GOOSE outlet soft pressure plate of the intelligent station main transformer protection equipment by remotely patrolling the intelligent station main transformer protection equipment; the Baoxin main station system obtains the busbar position information of the knife switch on the dual-mother dual-segment side of the intelligent station main transformer protection, and determines the busbar position information of the knife switch as 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. This method solves 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 intelligent substations with dual-mother dual-segment wiring.

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 main transformer protection GOOSE outlet of an intelligent station. Background Art

[0002] In traditional substations, the trip outputs of main transformer protection are typically hardwired to devices such as circuit breakers, making configuration and adjustment relatively intuitive and stable. However, with the increasing popularity of smart substations, GOOSE (Generic Object Oriented Substation Events) has become the primary method for exchanging information between smart devices, enabling protection devices to control the tripping of circuit breakers through network communication. This approach simplifies secondary cable routing but also introduces new challenges.

[0003] In a dual-bus, dual-section smart substation, the configuration of the GOOSE output soft pressure plate for the main transformer protection needs to be flexibly adjusted according to the different busbars on which the main transformer operates. In the operation and maintenance of most smart substations, the inspection of the GOOSE output soft pressure plate for the main transformer protection is still dependent on manual operation, including regular inspections and post-fault inspections. This operation requires a high level of skill from the operation and maintenance personnel, and there is a difficulty in identifying the misoperation or deactivation of the GOOSE output soft pressure plate for the main transformer protection. Summary of the Invention

[0004] The main purpose of this 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 incorrect activation and deactivation of the soft pressure plate at the GOOSE outlet of the main transformer protection for intelligent substations with dual-mother and dual-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 the dual-mother and dual-segment intelligent station main transformer protection list; the security master station identifies the intelligent station main transformer protection equipment in the intelligent station main transformer protection list; the security master station obtains the on / off status of the GOOSE outlet soft pressure plate of the intelligent station main transformer protection equipment by remotely patrolling the intelligent station main transformer protection equipment; the security 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 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 dual-segment smart station main transformer protection list, including: the Baoxin master station obtains a substation list with a dual-mother 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 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 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 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 based on the first wiring mode information and the second wiring mode information, including: when 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 dual-mother dual-segment wiring mode; when the 110kV 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, determining that the 110kV busbar is a dual-mother dual-segment wiring mode; and determining the substation with the dual-mother dual-segment wiring mode 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 as 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 dual-segment wiring method that need to be inspected; if there are no other main transformer protection devices using the 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 dual-mother dual-segment wiring method that need to be inspected, the inspection is continued.

[0012] Optionally, determining whether the on / off status 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 on / off status of the GOOSE outlet soft pressure plate, determining that the on / off status 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 on / off status of the GOOSE outlet soft pressure plate, determining that the on / off status 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 soft pressure plate status of the GOOSE outlet of the main transformer protection of an intelligent station is provided, including: a Baoxin main station, used 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; a Baoxin substation, the Baoxin substation is connected to the Baoxin main station through a dispatching data network, the Baoxin substation includes an intelligent remote motor, an intelligent recorder, and a control substation, used to collect and upload main transformer protection information to the Baoxin main station; a power grid dispatching automation system, the power grid dispatching automation system is connected to the Baoxin main station to provide bus position information of the knife switch on the dual-mother and dual-section side of the main transformer protection of the intelligent station; a web server, the web server is connected to the Baoxin main station through a forward and reverse isolation device, used to receive and process the alarm signal sent by the Baoxin main station; an Elink office system, the Elink office system communicates with the web server, 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, 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 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 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 busbar 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 busbar 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 incorrect 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 that constitute part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0017] Figure 1 A flowchart of a method for alarming the status of a soft pressure plate at a GOOSE outlet of a main transformer protection of an intelligent station 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 is shown, illustrating a method for alarming the soft pressure plate status of a GOOSE outlet of an intelligent station main transformer protection provided by an embodiment of the present application;

[0019] Figure 3 The figure shows an 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;

[0020] Figure 4 A system structure diagram of a method for alarming the status of a soft pressure plate at a GOOSE outlet of a main transformer protection of an intelligent station provided in accordance with 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 of the embodiments in this 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 present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this 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 that includes 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 from 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 put in or out. In order to solve the problem in the prior art that it is difficult to identify the situation where the main transformer protection GOOSE outlet soft pressure plate is mistakenly put in or out for the smart substation with double-mother and double-segment 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 with reference to the accompanying drawings in the embodiments of the present invention.

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

[0027] Step S101: The security master station obtains a dual-mother dual-segment intelligent station main transformer protection list;

[0028] Specifically, the Baoxin Master Station is a protection device in a power system used to monitor and protect the main transformer. Dual-bus, dual-section means the main transformer has two inputs and two outputs, connected to different buses and sections, respectively. A smart station is a power station equipped with intelligent functions. The main transformer protection list is a list of various protection functions and parameters in the main transformer protection system. By obtaining the main transformer protection list of the dual-bus, dual-section smart station, the Baoxin Master Station can effectively obtain and manage the main transformer protection equipment information related to the dual-bus, dual-section wiring method, providing an accurate data foundation for subsequent soft pressure plate status inspections and operating mode matching.

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

[0030] Specifically, smart station main transformer protection equipment refers to devices used to protect and control the main transformers in power systems. The smart station main transformer protection list lists all devices related to main transformer protection, including protection relays, current transformers, voltage transformers, and other devices. These devices protect the main transformers from faults such as overloads and short circuits, ensuring the safe operation of the power system. By identifying the main transformer protection devices in the smart station, the Baoxin Master Station can monitor their operating status in real time. The smart station main transformer protection list provides operations and maintenance personnel with a clear understanding of the location, status, and parameter settings of each device, facilitating 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 smart station, monitoring and managing the operating status and parameters of the main transformer protection equipment of the smart station via the network or other remote communication methods. GOOSE (Generic Object Oriented Substation Event) is a communication protocol used in smart power systems for rapidly transmitting status and event information between protection devices. The on / off status of the GOOSE output soft pressure plate refers to whether the soft pressure plate is on or off in the control system. When the soft pressure plate is in the on state, it indicates that the soft pressure plate has been started and is operating normally. Otherwise, it indicates that the soft pressure plate is in the off state and is unable to operate or has stopped operating. The on / off status of the soft pressure plate is usually controlled by signals or commands in the control system, which are used to control the operation and stopping of the soft pressure plate. The main transformer protection GOOSE output soft pressure plates include 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 practice, the activation and deactivation status of the soft pressure plate can be set and adjusted through the monitoring system or control panel to ensure that it functions properly when needed and can be deactivated when not needed, saving energy and extending equipment life. The Baoxin master station remotely monitors the main transformer protection equipment at the intelligent station to obtain the activation and deactivation status of the GOOSE outlet soft pressure plate, allowing it to monitor and control the operating status of the main transformer protection equipment. This enables remote monitoring and operation, improving system reliability and safety.

[0033] Step S104, the security master station obtains the busbar position information of the switch connected to 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 busbar position information of the switch connected to the switch as the operation mode information;

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

[0035] Supervisory Control and Data Acquisition (SCADA): This is the foundational component of the power grid dispatching automation system. It is responsible for collecting real-time telemetry (such as voltage, current, and power), telesignaling (such as switch status and protection action information), 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, and transmission lines distributed across the country.

[0036] State Estimation and Real-Time Analysis: The grid dispatch automation system uses collected data to provide real-time estimates of grid status, including voltage levels, load distribution, and power flow, ensuring accurate understanding and monitoring of the grid. It also enables advanced applications such as fault diagnosis, power flow calculations, and stability analysis, providing dispatchers with a comprehensive view of grid operations.

[0037] Dispatcher workstation: Dispatchers interact with the power grid dispatch automation system through a workstation, which displays the real-time operating status of the power grid, including a graphical interface, alarm information, and historical data. Dispatchers can use this information to monitor the power grid, make dispatch decisions, and perform control operations.

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

[0039] Load forecasting and dispatch planning: The power grid dispatch automation system can predict future power demand based on historical data, weather forecasts and other information, helping dispatchers formulate power generation plans and load distribution strategies to ensure a balance between power supply and demand.

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

[0041] Fault recovery and emergency response: When a power grid fault occurs, the grid dispatch 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, 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 operations. This data can be used for post-fault analysis, equipment maintenance, operation optimization, etc., helping the power grid dispatching center improve management measures and operation strategies.

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

[0044] The busbar location information of the knife switch on the dual-bus dual-section side of the main transformer protection in 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) in the intelligent substation is currently connected to. In an intelligent substation with a dual-bus 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 to which it is connected will directly affect the action logic and trip output configuration of the main transformer protection equipment. The busbar location information of the knife switch on the dual-bus dual-section side of the main transformer protection in the intelligent station is a prerequisite for the correct operation of the main transformer protection equipment and 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 status 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 it is connected to 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 of the knife switch, 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 busbar through the 22021 switch, the main transformer protection device should be put into operation to trip the 220kV#1 section 2015 soft pressure plate and the 220kV#1 busbar 2012 soft pressure plate to ensure that when a fault occurs in the main transformer, the related section switches and busbar 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 activation and deactivation status of the GOOSE outlet soft pressure plate is inconsistent with the operating mode information, the system will generate an alarm signal. This may cause abnormal equipment operation or failure. The alarm signal may be, for example, "XX substation XX main transformer protection 1 / 2 outlet soft pressure plate activation and deactivation are inconsistent with the operating mode." The purpose of the alarm signal is to remind operators to check and adjust the system to ensure normal equipment operation and avoid potential safety risks. By responding to the alarm signal promptly, production losses and safety accidents caused by equipment failure can be avoided.

[0049] In the above embodiment, first, the Baoxin master station obtains the dual-mother dual-segment smart station main transformer protection list and identifies the smart station main transformer protection equipment in the smart station main transformer protection list; then, the Baoxin master station obtains the on / off status of the GOOSE outlet soft pressure plate of the smart station main transformer protection equipment through remote patrol of the smart station main transformer protection equipment; the Baoxin master station obtains the busbar position information of the knife switch on the dual-mother dual-segment side of the smart station main transformer protection from the power grid dispatching automation system, and determines the busbar 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 incorrect on / off status of the main transformer protection GOOSE outlet soft pressure plate for smart substations with dual-mother dual-segment wiring.

[0050] In one embodiment of the present application, the Baoxin master station obtains a dual-mother dual-segment smart station main transformer protection list, including: the above-mentioned Baoxin master station obtains a substation list with a dual-mother 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 dual-bus, dual-section wiring from the grid dispatching automation system. This dual-bus, dual-section wiring is a configuration designed to improve grid reliability and flexibility. The substation's busbar system is designed with two busbars connected via a bus tie switch, and two segmented busbars connected via a segmented switch, forming a four-busbar structure. Obtaining this list of substations with dual-bus, dual-section wiring is to determine which substations' main transformer protection devices require monitoring. Based on this list, the Baoxin Master Station automatically retrieves the model information of the main transformer protection devices in all smart stations connected to its system. Smart stations are substations that utilize intelligent equipment and digital information transmission technology. Compared to traditional substations, smart stations offer a higher level of automation and information integration. Main transformer protection devices are automated devices within smart stations used to monitor and protect the main transformer from abnormal conditions such as overloads and short circuits. They are capable of transmitting control signals via GOOSE messages. The Baoxin Master Station uses this information to identify whether the main transformer protection device is an intelligent main transformer protection device with GOOSE output soft pressure plate functionality. Based on the acquisition and identification steps described above, the Baoxin Master Station generates a smart station main transformer protection list. This list includes all smart main transformer protection devices with GOOSE outlet soft pressure plate functionality in substations with dual-bus, dual-section wiring. This smart station main transformer protection list serves as the basis for subsequent remote inspections and status comparisons of GOOSE outlet soft pressure plates, 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 the substation with a dual-mother dual-segment wiring method as 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 utilize a dual-bus, dual-section wiring configuration based on the first wiring configuration information (220kV) and the second wiring configuration information (110kV). This process involves analyzing and matching the wiring configuration information to identify substations with a specific wiring configuration. For example, the Baoxin Master Station checks whether the information contains a description of four busbars (two main busbars and two segmented busbars), as well as the presence of bus tie switches and segmented switches—all hallmarks of a dual-bus, dual-section wiring configuration. Once the target substations are identified, the Baoxin Master Station consolidates the relevant information into a list of substations with a dual-bus, dual-section wiring configuration. This list includes each target substation's name, ID (i.e., a unique identifier for the substation, used to distinguish between different substations), and a description of the wiring configuration characteristics. This list of substations with a dual-bus, dual-section wiring configuration serves as the basis for subsequent remote inspections and status comparisons by the Baoxin Master Station, ensuring effective monitoring of all substations utilizing a dual-bus, dual-section wiring configuration. 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 alarms.

[0054] In a specific embodiment, a substation with a dual-mother dual-segment wiring mode is determined as a target substation based on the above-mentioned first wiring mode information and the above-mentioned second wiring mode information, including: when the above-mentioned 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 fourth preset number at the same time, the above-mentioned 220kV busbar is determined to be a dual-mother dual-segment wiring mode; when the above-mentioned 110kV 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, the above-mentioned 110kV busbar is determined to be a dual-mother dual-segment wiring mode; and the substation with the above-mentioned dual-mother dual-segment wiring mode is determined as the above-mentioned target substation.

[0055] Specifically, the Baoxin Master Station first obtains a list of substations with voltage levels of 500kV and 220kV. For each substation in the list, the Baoxin Master Station further analyzes the wiring configuration of its 220kV and 110kV busbars. This process is primarily accomplished by checking for the presence of specifically numbered switches, which are hallmarks of a dual-bus, dual-section wiring configuration:

[0056] 220kV busbar: If switches numbered 2012, 2015, 2026, and 2056 are present, this indicates that the substation's 220kV busbar utilizes a dual-bus, dual-section wiring arrangement. Specifically, switches 2012 and 2015 represent bus tie switches, while switches 2026 and 2056 represent sectionalizer switches. Together, these switches form a dual-bus, dual-section wiring arrangement.

[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 busbar and dual sectionalizer connection. These switches also include bus tie switches and sectionalizer switches, following a similar logic to 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 require further attention and monitoring of the GOOSE outlet soft pressure plate status.

[0059] After selecting a substation with dual-bus, dual-section wiring, the Baoxin master station and the substation adopted the Secure File Transfer Protocol (SFTP) for data transmission to facilitate subsequent monitoring and data exchange. SFTP is a secure file transfer method based on the SSH (Secure Shell) protocol, providing an encrypted transmission channel to ensure data security and integrity. By using SFTP to transmit data, the Baoxin master station can securely obtain and update the substation's operating status and device configuration information.

[0060] In summary, the method for identifying double-mother double-section wiring can accurately determine whether the substation adopts this wiring method by checking the switchgear with specific numbers. By utilizing the secure data transmission capability of the SFTP protocol, the Baoxin master station can effectively communicate 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 devices, 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 on / off 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 on / off status of the GOOSE outlet soft pressure plate of the above-mentioned intelligent station main transformer protection device.

[0064] Specifically, to enable digital monitoring and management, the main transformer protection devices in smart stations are typically designed with a remote communication interface. This interface supports data exchange with external monitoring systems, such as the Baoxin master station, including the transmission of real-time device status information via GOOSE messages. The existence of this remote communication interface enables the main transformer protection devices to function as part of the smart grid system, enabling remote device status monitoring and management. The Baoxin master station establishes a connection with the remote communication interface of the smart station's main transformer protection device through specific network protocols and security mechanisms. This connection is typically based on standard power communication protocols such as DL / T 860 (IEC 61850), which define 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 smart station's main transformer protection device in real time. Once the Baoxin master station successfully connects to the remote communication interface of the smart station's main transformer protection device, it can obtain information about the device's GOOSE output soft pressure plate's activation and deactivation status. 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 grid operation mode, and thus determine whether there are any configuration errors or inconsistencies.

[0065] In summary, the remote communication interface of the intelligent station's main transformer protection equipment is key to achieving automated monitoring at the Baoxin master station. It not only enables the Baoxin master station to remotely access equipment status but also obtains the real-time activation and deactivation status of the GOOSE output soft pressure plate. This is crucial for implementing automatic alarms for the GOOSE output soft pressure plate of the intelligent station's main transformer protection. This approach improves monitoring efficiency, ensures the safety and reliability of power grid operation, and avoids grid accidents caused by improper protection device configuration.

[0066] In one embodiment of the present application, after remote inspection of the main transformer protection device of the above-mentioned intelligent station, the above-mentioned method also includes: the above-mentioned Baoxin master 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 checks whether any other dual-bus, dual-section wiring main transformer protection devices have not been inspected. This check is based on a previously generated intelligent station main transformer protection list, which records the information of all dual-bus, dual-section wiring main transformer protection devices in the target substation. By querying the list, the Baoxin Master Station can identify which devices have been inspected and which devices still need to be inspected. If the Baoxin Master Station confirms that the inspected devices cover all dual-bus, dual-section wiring main transformer protection devices, 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 output soft pressure plate status check of all relevant devices has been completed. If no new devices are connected or the operating mode changes, there is no need to repeat the inspection. However, if the Baoxin Master Station finds that other dual-bus, dual-section wiring main transformer protection devices in the list 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 device monitoring and status comparison.

[0068] This closed-loop inspection process not only improves monitoring efficiency but also ensures comprehensive and continuous monitoring. In smart grid operations, due to the dynamic changes in substation equipment and operating modes, continuous and comprehensive inspections are essential to promptly identify and address inconsistencies or errors in the GOOSE outlet soft pressure plate configuration, avoiding potential grid failures or malfunctioning of protective equipment, thereby maintaining the safety and stability of grid operations. This approach also demonstrates the level of automation in equipment status monitoring and management within smart grid dispatching automation systems, and is a key guarantee for the efficient and high-quality operation of smart substations.

[0069] In one embodiment of the present application, determining whether the on / off status 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 on / off status of the above-mentioned GOOSE outlet soft pressure plate, determining that the on / off status 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 on / off status of the above-mentioned GOOSE outlet soft pressure plate, determining that the on / off status 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 closed status of the first busbar side knife switch (such as the knife switch connecting the main transformer and the first busbar) and the second busbar side knife switch (such as the knife switch connecting the main transformer and the second busbar), it will check whether the closed status of these knife 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 busbar side knife switch is in the closed position and the corresponding GOOSE outlet soft pressure plate (such as the soft pressure plate that jumps the first busbar section) is also in the put-in state, and the second busbar side knife switch is in the open position and the corresponding GOOSE outlet soft pressure plate (such as the soft pressure plate that jumps the second busbar 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 operating mode information. Vice versa, that is, if the first busbar side knife switch is in the open position and the GOOSE outlet soft pressure plate is exited, the second busbar side knife 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 correspondingly thrown in and out 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 first busbar side knife switch does not match the corresponding GOOSE outlet soft pressure plate throw-in / out state, or the closed state of the second busbar side knife switch does not match the corresponding GOOSE outlet soft pressure plate throw-in / out state, the Baoxin master station will determine that the throw-in / out state of the GOOSE outlet soft pressure plate is inconsistent with the operating mode information. For example, if the first busbar side knife switch is in the closed position, but the corresponding GOOSE outlet soft pressure plate (such as the soft pressure plate that jumps the first busbar section) is in the exit state, or the second busbar side knife switch is in the closed position, but the corresponding GOOSE outlet soft pressure plate (such as the soft pressure plate that jumps the second busbar section) is in the put-in state, this will be regarded as inconsistent status. Inconsistent status indicates that the GOOSE outlet 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 a 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 malfunction 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 the 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 impact of 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 operating status information, including the opening and closing status of each switch, from the power grid dispatching automation system via the network. The Baoxin Master Station will automatically analyze this information to determine the actual current operating 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 operating mode. If the Baoxin Master Station finds that the configuration of the soft pressure plate is inconsistent with the expected operating 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: "220kV Example Station #2 Main Transformer Main Protection Outlet Soft Pressure Plate is inconsistent with the operating mode."

[0077] Through this comparative analysis, the Baoxin Master Station can accurately determine whether the activation and deactivation status of the GOOSE outlet soft pressure plate is correctly configured according to the current operating mode. This automated consistency check not only improves operation and maintenance efficiency, but also enhances the safety and reliability of power grid operations.

[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 alarm method for the GOOSE outlet soft pressure plate status of the intelligent station main transformer protection of the present application will be described in detail below with reference to 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-bus 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 on / off 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 security master station obtains the busbar 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 busbar 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 on / off 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 dual-segment wiring method that need to be inspected.

[0087] Step S8: If there are other main transformer protection devices using the 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 that adopts the dual-mother dual-segment wiring method and needs to be inspected, the inspection process ends.

[0089] The embodiment of the present application also provides an alarm system for the status of the soft pressure plate 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 via the dispatching data network. The Baoxin substation includes an intelligent telemotor, an intelligent wave recorder, and a control substation, which is used to collect and upload main transformer protection information to the Baoxin main station.

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

[0093] A web server, the web server being connected to the security main station via a forward and reverse isolation device, and being used to receive and process alarm signals 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. Deployed in Safety Zone I, it connects to the power grid dispatching automation system through a firewall, to the Baoxin Substation via the dispatching data network, and to the Baoxin Master Station's web server via forward and reverse isolation devices, collecting real-time data from protection devices, wave recorders, and other devices. The Baoxin Master Station is responsible for implementing the alarm method for the status of the GOOSE outlet soft pressure plate of the intelligent substation's main transformer protection. By collecting and analyzing data from the Baoxin Substation, it compares it with the operating mode information provided by the power grid dispatching automation system to determine whether the soft pressure plate status is correct and generates an alarm signal if any discrepancy is found. The Baoxin Substation, deployed in Safety Zone I, consists of various intelligent devices, including intelligent telemotors, intelligent wave recorders, and control substations. These devices are connected to the Baoxin Master Station via the dispatching data network and are responsible for collecting real-time information from the substation's main transformer protection equipment, such as the status of the GOOSE outlet soft pressure plate, and uploading this information to the Baoxin Master Station for analysis. The intelligent telemotors are used to implement telesignaling, telemetering, remote control, and remote adjustment functions for primary and secondary equipment. The power grid dispatching automation system, deployed in Safety Zone I, monitors and controls the substation's primary and secondary equipment. It is a crucial source of information for the Baoxin Master Station regarding the operating status of the smart substation. Through its interface with the Baoxin Master Station, it provides key operational data, such as the busbar location of the switch on the dual-bus, dual-section side of the main transformer protection system. This data is crucial for the Baoxin Master Station to accurately determine the status of the soft pressure plate. A web server, deployed in Safety Zone III and connected to the Baoxin Master Station via a forward and reverse isolation device, receives alarm signals from the Baoxin Master Station, processes them, and prepares to send alarm information to relevant personnel. Web servers typically feature user-friendly interfaces, making it easy for maintenance personnel to access and respond to alarms. The Elink Office System, a dedicated power grid office information transmission system, is deployed in Safety Zone IV. The Elink Office System communicates with the web server, receiving alarm signals forwarded by the web server and promptly sending them to relevant maintenance personnel, ensuring they are immediately aware of abnormal substation protection equipment status. The Elink Office System typically includes a push notification feature, enabling rapid and accurate delivery of alarm information to designated recipients.

[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, allowing the Baoxin master station to collect and monitor protection equipment information from the smart station in real time, including the status of the GOOSE outlet soft pressure plate. This connection mechanism is the key to realizing the automatic alarm method of the GOOSE outlet soft pressure plate of the main transformer protection of the smart station. It ensures that the Baoxin master station can promptly and accurately determine whether the soft pressure plate status matches the grid operation mode. Once a mismatch is found, it can quickly generate an alarm and notify relevant personnel, thereby improving the safety and efficiency of 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. It uses dedicated network equipment and security policies 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: Power system operation and control data need to be transmitted and processed in a very short time. The dispatching data network is designed with high bandwidth and low latency to meet the needs of real-time monitoring and control of the power system and ensure the timeliness of data.

[0099] Reliability: The dispatching data network utilizes a redundant design and fault recovery mechanism to ensure that critical data transmission remains unaffected even in the event of a partial network failure. Furthermore, it incorporates data encryption, identity authentication, and access control features to enhance data transmission reliability.

[0100] Standardization: The dispatching data network follows standard protocols within 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, ensuring 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 foundation 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 telemotor. 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: Measurement and control devices collect information on the status of primary equipment, such as the open and closed states of circuit breakers, the closed state of disconnectors, and electrical quantities such as current and voltage. This data reflects the operating conditions of substation equipment and serves as a crucial basis for status analysis and alarm assessment by the Baoxin Master Station.

[0104] Control Operations: The measurement and control device can receive control commands from the Baoxin master station or other dispatch automation systems to remotely control primary equipment. For example, it can execute dispatch instructions to close or open circuit breakers and adjust the closure status of switchgear, thereby changing the operation mode of the power grid.

[0105] Communication: The measurement and control device exchanges data with the Baoxin master station, Baoxin slave stations, and other intelligent devices such as remote motors via standard communication protocols such as DL / T 860 (IEC 61850). It not only transmits collected device status data but also receives and executes control commands, enabling two-way data transmission.

[0106] Monitoring and protection coordination: The measurement and control device works closely with the protection device in the smart substation, providing real-time information on the protection device's operating status and action. Although not directly mentioned in this technical briefing, it indirectly supports the Baoxin master station's assessment of the GOOSE outlet soft pressure plate's status, as certain status information of the protection device may be transmitted to the Baoxin master station via the measurement and control device.

[0107] Fault diagnosis and early warning: The measurement and control device can conduct preliminary analysis of 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 any abnormal conditions or faults. Figure 4 As shown, the protection device is connected to the Baoxin substation. It uploads real-time protection device status and action information to the Baoxin master station through Baoxin substation equipment such as intelligent telemotors and intelligent wave recorders. Based on this information and the grid operation status provided by the grid dispatch automation system, the Baoxin master station can determine whether the GOOSE output soft pressure plate in the protection device is correctly configured, thereby realizing automated inspection and alarm functions for the protection device configuration status. This mechanism helps operation and maintenance personnel promptly discover and correct protection device configuration errors, ensuring the safety and stability of grid operation.

[0109] Through the collaborative work of its various components, the alarm system automatically monitors the status of the GOOSE output soft pressure plate on the smart station's main transformer protection and generates abnormal alarms. The Baoxin substations are responsible for data collection and upload, the Baoxin master station analyzes data and generates alarm signals, and the web server and Elink office system process and transmit alarm information, jointly ensuring the safety and stability of power grid operation. The system's high degree of automation and rapid response effectively prevent and promptly respond to configuration errors in main transformer protection equipment, avoiding potential misoperation or failure of protection due to improper soft pressure plate status, and reducing risks to power grid operation.

[0110] An embodiment of the present invention provides a computer-readable storage medium, which includes a stored program. 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.

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

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

[0113] Specifically, the Baoxin Master Station is a protection device in a power system used to monitor and protect the main transformer. Dual-bus, dual-section means the main transformer has two inputs and two outputs, connected to different buses and sections, respectively. A smart station is a power station equipped with intelligent functions. The main transformer protection list is a list of various protection functions and parameters in the main transformer protection system. By obtaining the main transformer protection list of the dual-bus, dual-section smart station, the Baoxin Master Station can effectively obtain and manage the main transformer protection equipment information related to the dual-bus, dual-section wiring method, providing an accurate data foundation for subsequent soft pressure plate status inspections and operating mode matching.

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

[0115] Specifically, smart station main transformer protection equipment refers to devices used to protect and control the main transformers in power systems. The smart station main transformer protection list lists all devices related to main transformer protection, including protection relays, current transformers, voltage transformers, and other devices. These devices protect the main transformers from faults such as overloads and short circuits, ensuring the safe operation of the power system. By identifying the main transformer protection devices in the smart station, the Baoxin Master Station can monitor their operating status in real time. The smart station main transformer protection list provides operations and maintenance personnel with a clear understanding of the location, status, and parameter settings of each device, facilitating maintenance and troubleshooting.

[0116] In 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 smart station, monitoring and managing the operating status and parameters of the main transformer protection equipment of the smart station via the network or other remote communication methods. GOOSE (Generic Object Oriented Substation Event) is a communication protocol used in smart power systems for rapidly transmitting status and event information between protection devices. The on / off status of the GOOSE output soft pressure plate refers to whether the soft pressure plate is on or off in the control system. When the soft pressure plate is in the on state, it indicates that the soft pressure plate has been started and is operating normally. Otherwise, it indicates that the soft pressure plate is in the off state and is unable to operate or has stopped operating. The on / off status of the soft pressure plate is usually controlled by signals or commands in the control system, which are used to control the operation and stopping of the soft pressure plate. The main transformer protection GOOSE output soft pressure plates include 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 practice, the activation and deactivation status of the soft pressure plate can be set and adjusted through the monitoring system or control panel to ensure that it functions properly when needed and can be deactivated when not needed, saving energy and extending equipment life. The Baoxin master station remotely monitors the main transformer protection equipment at the intelligent station to obtain the activation and deactivation status of the GOOSE outlet soft pressure plate, allowing it to monitor and control the operating status of the main transformer protection equipment. This enables remote monitoring and operation, improving system reliability and safety.

[0118] In step S104, the security master station obtains the busbar 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 busbar position information of the switch as the operation mode information.

[0119] Specifically, the 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 grid dispatching automation system provides decision support to 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-bus dual-section side of the main transformer protection in 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) in the intelligent substation is currently connected to. In an intelligent substation with a dual-bus 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 to which it is connected will directly affect the action logic and trip output configuration of the main transformer protection equipment. The busbar location information of the knife switch on the dual-bus dual-section side of the main transformer protection in the intelligent station is a prerequisite for the correct operation of the main transformer protection equipment and 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 status 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 it is connected to 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 of the knife switch, 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 busbar through the 22021 switch, the main transformer protection device should be put into operation to trip the 220kV#1 section 2015 soft pressure plate and the 220kV#1 busbar 2012 soft pressure plate to ensure that when a fault occurs in the main transformer, the related section switches and busbar 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 activation and deactivation status of the GOOSE outlet soft pressure plate is inconsistent with the operating mode information, the system will generate an alarm signal. This may cause abnormal equipment operation or failure. The alarm signal may be, for example, "XX substation XX main transformer protection 1 / 2 outlet soft pressure plate activation and deactivation are inconsistent with the operating mode." The purpose of the alarm signal is to remind operators to check and adjust the system to ensure normal equipment operation and avoid potential safety risks. By responding to the alarm signal promptly, production losses and safety accidents caused by equipment failure can be avoided.

[0125] Obviously, those skilled in the art will appreciate that the various modules or steps of the present invention described above can be implemented using a general-purpose computing device, can be centralized on a single computing device, or can be distributed across a network of multiple computing devices. They can be implemented using program code executable by the computing device, and thus, can be stored in a storage device and executed by the computing device. In some cases, the steps shown or described herein can be performed in a different order than that shown, or can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0126] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can 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 can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain 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 produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. 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 that can direct a computer or other programmable data processing device to work 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 The 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 operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0130] In a typical configuration, a computing device includes one or more processors (CPUs), 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. The 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 disc read-only memory (CD-ROM), digital versatile disc (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 transitory media such as modulated data signals and carrier waves.

[0133] It should also be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, commodity, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, commodity, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of other identical elements in the process, method, commodity, or apparatus that includes the element.

[0134] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection 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 busbar position information of the switch connected to 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 busbar position information of the switch connected to the busbar 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; Determining whether the insertion and withdrawal status of the GOOSE outlet soft pressure plate is consistent with the operation mode information includes: When the closed state of the first busbar side knife switch and the closed state of the second busbar side knife switch match the on / off state of the GOOSE outlet soft pressure plate, determining that the on / off 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 on / off state of the GOOSE outlet soft pressure plate do not match, it is determined that the on / off state of the GOOSE outlet soft pressure plate is inconsistent with the operating mode information.

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-bus dual-section wiring mode; The security master station automatically reads the model information of all smart station main transformer protection devices connected to the security master station according to the substation list, and generates the smart 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 a dual-bus dual-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; Determining a substation with a dual-bus dual-section wiring mode as a target substation according to the first wiring mode information and the second wiring mode information; The information of the target substation is integrated into a list of substations with a dual-bus 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-bus 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, the 220kV busbar is determined to be 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, it is determined that the 110 kV busbar is a double-bus double-section connection; The substation with the dual-bus dual-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 ledger 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 activation and deactivation 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 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 that adopts the dual-mother dual-segment wiring method and needs to be inspected, the inspection process is terminated; If there are other main transformer protection devices that adopt the dual-mother dual-segment wiring method and need to be inspected, the inspection will continue.

8. 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, configured 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 7; A security substation, which is connected to the security main station via a dispatching data network. The security substation includes an intelligent telemotor, an intelligent wave recorder, and a control substation, and is used to collect and upload main transformer protection information to the security main station. A power grid dispatching automation system, which is connected to the security master station and is used to provide busbar position information of the switch on the dual-bus dual-segment side of the main transformer protection of the intelligent station; A web server, connected to the security main station via a forward and reverse isolation device, and configured to receive and process alarm signals sent by the security main station; An Elink office system, wherein the Elink office system communicates with the web server, is configured to receive the alarm signal sent by the web server, and send the alarm signal to an operation and maintenance personnel.

9. 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 7.

Images