Double-bus intelligent substation stability control device and method based on double-path signal receiving

Abstract

The invention provides a double-bus intelligent substation stability control device and method based on double-path signal receiving. The intelligent substation stability control device comprises a signal conversion module, a signal processing module and a signal processing module, wherein the signal conversion module is used for converting GOOSE tripping signals into hard contact signals without time delay and outputting the signals; the double-path receiving module is provided with a bus protection tripping GOOSE receiving soft pressing plate and a hard pressing plate for receiving bus protection tripping signals of another stability control device; and the logical operation module is used for performing'or 'operation on the bus protection tripping signals received by the double-path receiving module through the two paths, and regarding the signal received by any path as an effective signal. The problem that corresponding stability control devices are forced to be overhauled or quit operation at the same time during bus protection overhaul of the double-bus double-section main wiring intelligent substation is solved, stable operation and power supply reliability of a power system are guaranteed, and meanwhile the problems that the system stability is reduced and the overhaul cost is increased due to the fact that the stability control devices quit operation are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of power system control, and in particular to a dual-bus intelligent substation stabilization control device and method based on dual-path signal reception. Background Art

[0002] In the 220kV power system, the double-bus double-section wiring method is a main wiring form widely used in substations. This wiring method has the characteristics of flexible operation and high power supply reliability, and can meet the power system's requirements for power supply continuity and stability. In the substation with double-bus double-section wiring, the configured busbar protection protects the double busbar as a whole object. When the primary equipment of one of the busbars is transferred for maintenance, the busbar protection still needs to remain in operation and protect the other operating busbar; unless both busbar primary equipment of the double busbar are powered off, the busbar protection can be withdrawn at this time. In the 220kV power system, in order to ensure reliable relay protection, dual configuration is used, that is, two sets of busbar protection, A and B, are equipped. When the busbar protection needs to be repaired, it is not necessary to shut down the primary equipment of the two buses at the same time, but to carry out maintenance by withdrawing the A and B sets of busbar protection one by one, so that there is always a set of busbar protection to undertake the protection task.

[0003] The stability control device (abbreviated as "stability control device") is one of the core equipment for the safe and stable operation of substations and power systems. In order to ensure the high reliability of the system, the stability control device is usually configured in a dual configuration similar to the protection device, that is, two sets of stability control devices A and B are configured. In order to realize its function, the stability control device needs to collect the tripping signal of the protection device. According to the principle that the dual equipment of the power system should be independent of each other, under normal circumstances, the failure of the A set of equipment cannot affect the normal operation of the B set of equipment, and the failure of the B set of equipment cannot affect the normal operation of the A set of equipment. Therefore, the A set of stability control device collects the information of the A set of protection devices, and the B set of stability control device collects the information of the B set of protection devices.

[0004] As the technology of smart substations becomes increasingly mature, most of the substations that are newly built or renovated are smart substations. The stabilization and control devices in smart substations receive information such as GOOSE tripping signals from protection via optical fiber network communication, and implement stable control functions for the power system based on this information. In smart substations, the principle of independent dual equipment must also be met, and any set of stabilization and control devices cannot be connected to two sets of optical fiber networks for communication at the same time.

[0005] However, during the busbar protection maintenance period of the smart substation with double busbar double segment connection mode, the existing technology has the following problems: 1. Impact of busbar protection out of operation: When a single busbar protection is out of operation for maintenance, the corresponding stabilization and control device will face the following situations according to the different safety measures for busbar protection maintenance: a) The stabilization control device receives a GOOSE trip signal with a maintenance mark from the busbar protection (corresponding to the busbar protection maintenance safety measure - putting the busbar protection device maintenance hard pressure plate into operation): When the busbar protection device maintenance hard pressure plate is put into operation, the GOOSE trip signal sent by the busbar protection will have a maintenance mark, and the stabilization control device will determine that the received signal is an invalid signal. At this time, the stabilization control device will be locked and exit the stabilization control function.

[0006] b) The stabilization control device detects that the GOOSE communication link to the bus protection is interrupted (corresponding to the bus protection maintenance safety measure - disconnecting the bus protection GOOSE networking optical fiber): If the bus protection GOOSE networking optical fiber is disconnected, the stabilization control device will be locked due to the interruption of the GOOSE communication link and exit the stabilization control function.

[0007] 2. Limited operation of the stabilization control device: The above situations will affect the operation of the stabilization control device and make it impossible to perform its stabilization control function normally. Therefore, under the existing technical conditions, during the maintenance of the A-set busbar protection of the dual-bus dual-section main connection intelligent substation, the corresponding A-set stabilization control device can only be forced to be overhauled or shut down at the same time. Similarly, during the maintenance of the B-set busbar protection, the corresponding B-set stabilization control device can only be forced to be overhauled or shut down at the same time.

[0008] The current busbar protection maintenance and operation method of dual-bus dual-section main connection intelligent substation has the following defects and shortcomings: 1. Impact on the stability of the power system In the prior art, when the busbar protection of a dual-bus dual-section main connection intelligent substation is under maintenance, the corresponding stabilization control device is forced to exit operation or be maintained at the same time. Since the set of stabilization control devices is forced to exit operation, the corresponding set of stabilization control devices associated with it in the stabilization control system where it is located also needs to exit operation. Especially for the system center station, it may cause several stabilization control devices in the area to exit operation. At the same time, the power system can only rely on a single set of stabilization control devices to operate during the busbar protection maintenance. If the set of stabilization control refuses to operate, it will cause serious power grid events; it significantly reduces the redundancy and reliability of the system, and increases the operating risk of the power system in the event of a fault, especially during peak load periods or under abnormal system conditions, which may cause chain failures and threaten the safe and stable operation of the power system.

[0009] 2. Increase maintenance costs and complexity a) Maintenance tasks are concentrated and manpower requirements increase: Existing technologies require that the stabilization and control devices and busbar protection be maintained at the same time, resulting in a high concentration of maintenance tasks within a certain period of time. Especially in power stations with short maintenance windows or load-intensive areas, maintenance personnel need to complete a large amount of work within a limited time, which not only increases manpower requirements, but may also affect maintenance quality and safety due to excessive work intensity.

[0010] b) Challenges in coordination and efficiency of maintenance resources: Due to the overlapping maintenance tasks of the stabilization and control devices and busbar protection, the allocation of maintenance resources (such as equipment, tools, and personnel) may face conflicts, resulting in reduced maintenance efficiency, extended maintenance cycles, and further increased system operation risks. Summary of the invention

[0011] The technical problem to be solved by the present invention is to provide a dual-bus intelligent substation stabilization control device and method based on dual-path signal reception, aiming to solve the problem that when the busbar protection of the dual-bus dual-section main connection intelligent substation is under maintenance, the corresponding stabilization control devices are forced to be repaired or shut down at the same time, thereby ensuring the stable operation and power supply reliability of the power system, and at the same time solving the problems of decreased system stability and increased maintenance costs caused by the shutdown of the stabilization control devices.

[0012] In order to solve the above technical problems, the technical solution adopted by the present invention is: The dual-bus intelligent substation stabilization control device based on dual-path signal reception includes: Signal conversion module: used to convert the GOOSE tripping signal of the bus protection into a hard contact signal output without delay after the stabilization and control device receives the GOOSE tripping signal of the bus protection through the optical fiber GOOSE networking mode; Dual-path receiving module: It is equipped with a busbar protection tripping GOOSE receiving soft pressure plate and a hard pressure plate for receiving busbar protection tripping signals of another set of stabilizing control devices, which are used to receive signals through the busbar protection tripping GOOSE receiving soft pressure plate through the optical fiber GOOSE networking mode, and receive signals through the conventional hard contact point signals opened by another set of stabilizing control devices through the hard pressure plate; Logical operation module: performs an “OR” operation on the bus protection tripping signals received by the dual-path receiving module through two paths, and regards the signal received through any path as a valid signal.

[0013] During the process of converting and transmitting the hard-connection point signal by the above-mentioned signal conversion module, no information interaction in the form of network communication occurs between the two stabilization and control devices.

[0014] When the above-mentioned busbar protection tripping GOOSE receiving soft pressure plate is put into operation, the stabilization and control device receives and processes the GOOSE tripping signal sent by the busbar protection, and performs data and link abnormality judgment and alarm at the same time; when the soft pressure plate is exited, the stabilization and control device does not receive and process the GOOSE tripping signal, and stops data and link abnormality judgment.

[0015] The above-mentioned intelligent substation stabilization and control device also includes a control module connected to the dual-path receiving module and the logic operation module, which is used to control the busbar protection tripping GOOSE receiving soft pressure plate and the receiving busbar protection tripping signal hard pressure plate of another stabilization and control device according to the operating status of the busbar protection.

[0016] The operation method of the dual-bus intelligent substation stabilization control device based on dual-path signal reception described above comprises the following steps: Normal operation state: In normal operation mode, the busbar protection tripping GOOSE receiving soft pressure plate is put into operation, and the hard pressure plate receiving the busbar protection tripping signal of another set of stabilization and control device is withdrawn. The stabilization and control device receives the busbar protection GOOSE tripping signal through the optical fiber GOOSE networking mode; During the busbar protection maintenance, the operation steps of the stabilizing control device are as follows: when a single set of busbar protection needs to be shut down for maintenance, the hard pressure plate that receives the busbar protection tripping signal of another set of stabilizing control device is put into operation, and the soft pressure plate that receives the busbar protection GOOSE tripping signal is withdrawn, so that the stabilizing control device can maintain normal operation through the hard contact signal of another set of stabilizing control device; When the busbar protection is overhauled and put into operation, the operating steps of the stabilizing control device are as follows: when the busbar protection is overhauled and restored to operation, the soft pressure plate that receives the busbar protection GOOSE tripping signal is put into operation, and the hard pressure plate that receives the busbar protection tripping signal of another set of stabilizing control device is withdrawn, and the stabilizing control device is restored to the normal operation mode of the corresponding busbar protection tripping GOOSE.

[0017] During the above-mentioned busbar protection inspection and commissioning after the protection inspection is completed, the operation steps of the stabilization and control device also include the step of real-time monitoring of the operating status of the stabilization and control device. When an abnormality is detected in the stabilization and control device, an alarm signal is issued.

[0018] Before operating the stabilization control device during the above-mentioned busbar protection maintenance, the preparatory steps of checking and confirming the tools, equipment and personnel arrangements required for the maintenance are also included to ensure that the maintenance work can proceed smoothly.

[0019] When the above-mentioned busbar protection maintenance is completed and put into operation, the signal access path is switched during the operation steps of the stabilization and control device, and the function of the stabilization and control device is not affected and does not need to be shut down; after the switch, check that the busbar protection tripping signal of the stabilization and control device is normal, which can ensure the coordinated working performance after resuming normal operation.

[0020] The operations in the above-mentioned maintenance operation steps and recovery operation steps are recorded in the operation log, which includes the operation time, operator, operation content and status information of the stabilization and control device before and after the operation.

[0021] During the above-mentioned busbar protection maintenance period, based on the dual-path receiving mechanism and logic, the corresponding set of stability control devices can receive the busbar tripping signal by adjusting the signal receiving path, ensuring that the corresponding set of stability control devices continues to operate without being affected by the busbar protection maintenance.

[0022] The present invention provides a dual-bus intelligent substation stabilization control device and method based on dual-path signal reception, which has the following beneficial effects: 1. Improve the stability of the power system The present invention realizes the continuous operation of the stabilization control device during the busbar protection maintenance of the dual-bus dual-section main connection intelligent substation, thus avoiding the problem of the stabilization control device being forced to exit operation or undergo maintenance at the same time in the prior art. This design significantly enhances the redundancy and reliability of the system, reduces the operating risk of the system under fault conditions, and can effectively prevent the occurrence of cascading failures, especially during peak loads or system abnormal conditions, and ensure the safe and stable operation of the power system.

[0023] 2. Reduce maintenance costs and complexity The present invention avoids the constraint that the stabilization control devices need to be overhauled or shut down at the same time when the busbars of a dual-mother dual-section main connection intelligent substation are overhauled, thereby reducing the workload and manpower input during the maintenance period, especially in hydropower stations with a short maintenance window period, and can significantly alleviate the problem of concentrated maintenance tasks.

[0024] 3. Simple and easy to operate, strong practicality The technical solution of the present invention has designed clear operation steps, including the input of the hard pressure plate and the withdrawal of the soft pressure plate, etc. These steps are simple and intuitive, which are convenient for power operation and maintenance personnel to quickly master and implement. At the same time, the solution fully considers the needs of actual operation and maintenance scenarios, has strong operability and practicality, and can achieve continuous operation of the stabilization control device without increasing the burden on operation and maintenance personnel.

[0025] 4. Wide applicability and promotion value The technical solution of the present invention is not only applicable to 220kV double-bus double-tap wiring intelligent substations, but can also be extended to other substations using double-bus wiring, and has strong versatility. The present invention has low application cost, is easy to implement, has strong practicality, and has high promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 is a schematic diagram of a dual-path signal receiving module of the present invention; Figure 2 This is a logic diagram of signal acquisition in the present invention. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] Embodiment 1: like Figure 1 As shown in the figure, a dual-bus intelligent substation stabilization control device based on dual-path signal reception, the intelligent substation stabilization control device includes: Signal conversion module: used to convert the GOOSE tripping signal of the bus protection into a hard contact signal output without delay after the stabilization and control device receives the GOOSE tripping signal of the bus protection through the optical fiber GOOSE networking mode; Dual-path receiving module: It is equipped with a busbar protection tripping GOOSE receiving soft pressure plate and a hard pressure plate for receiving busbar protection tripping signals of another set of stabilizing control devices, which are used to receive signals through the busbar protection tripping GOOSE receiving soft pressure plate through the optical fiber GOOSE networking mode, and receive signals through the conventional hard contact point signals opened by another set of stabilizing control devices through the hard pressure plate; Logical operation module: performs an “OR” operation on the bus protection tripping signals received by the dual-path receiving module through two paths, and regards the signal received through any path as a valid signal.

[0029] During the process of converting and transmitting the hard-connection point signal by the above-mentioned signal conversion module, no information interaction in the form of network communication occurs between the two stabilization and control devices.

[0030] When the above-mentioned busbar protection tripping GOOSE receiving soft pressure plate is put into operation, the stabilization and control device receives and processes the GOOSE tripping signal sent by the busbar protection, and performs data and link abnormality judgment and alarm at the same time; when the soft pressure plate is exited, the stabilization and control device does not receive and process the GOOSE tripping signal, and stops data and link abnormality judgment.

[0031] The above-mentioned intelligent substation stabilization and control device also includes a control module connected to the dual-path receiving module and the logic operation module, which is used to control the busbar protection tripping GOOSE receiving soft pressure plate and the receiving busbar protection tripping signal hard pressure plate of another stabilization and control device according to the operating status of the busbar protection.

[0032] The operation method of the dual-bus intelligent substation stabilization control device based on dual-path signal reception described above comprises the following steps: Normal operation state: In normal operation mode, the busbar protection tripping GOOSE receiving soft pressure plate is put into operation, and the hard pressure plate receiving the busbar protection tripping signal of another set of stabilization and control device is withdrawn. The stabilization and control device receives the busbar protection GOOSE tripping signal through the optical fiber GOOSE networking mode; During the busbar protection maintenance, the operation steps of the stabilizing control device are as follows: when a single set of busbar protection needs to be shut down for maintenance, the hard pressure plate that receives the busbar protection tripping signal of another set of stabilizing control device is put into operation, and the soft pressure plate that receives the busbar protection GOOSE tripping signal is withdrawn, so that the stabilizing control device can maintain normal operation through the hard contact signal of another set of stabilizing control device; When the busbar protection is overhauled and put into operation, the operating steps of the stabilizing control device are as follows: when the busbar protection is overhauled and restored to operation, the soft pressure plate that receives the busbar protection GOOSE tripping signal is put into operation, and the hard pressure plate that receives the busbar protection tripping signal of another set of stabilizing control device is withdrawn, and the stabilizing control device is restored to the normal operation mode of the corresponding busbar protection tripping GOOSE.

[0033] During the above-mentioned busbar protection inspection and commissioning after the protection inspection is completed, the operation steps of the stabilization and control device also include the step of real-time monitoring of the operating status of the stabilization and control device. When an abnormality is detected in the stabilization and control device, an alarm signal is issued.

[0034] Before operating the stabilization control device during the above-mentioned busbar protection maintenance, the preparatory steps of checking and confirming the tools, equipment and personnel arrangements required for the maintenance are also included to ensure that the maintenance work can proceed smoothly.

[0035] When the above-mentioned busbar protection maintenance is completed and put into operation, the signal access path is switched during the operation steps of the stabilization and control device, and the function of the stabilization and control device is not affected and does not need to be shut down; after the switch, check that the busbar protection tripping signal of the stabilization and control device is normal, which can ensure the coordinated working performance after resuming normal operation.

[0036] The operations in the above-mentioned maintenance operation steps and recovery operation steps are recorded in the operation log, which includes the operation time, operator, operation content and status information of the stabilization and control device before and after the operation.

[0037] During the above-mentioned busbar protection maintenance period, based on the dual-path receiving mechanism and logic, the corresponding set of stability control devices can receive the busbar tripping signal by adjusting the signal receiving path, ensuring that the corresponding set of stability control devices continues to operate without being affected by the busbar protection maintenance.

[0038] Embodiment 2: Aiming at the problem that the stabilization control device is forced to be overhauled or shut down at the same time during the busbar protection overhaul of the dual-bus dual-section main connection intelligent substation, the present invention proposes an operation optimization method for the stabilization control device of the intelligent substation. The scheme optimizes the signal transmission path and operation and maintenance process, especially through the dual-path signal receiving mechanism and hard contact signal conversion, to achieve redundant transmission and reliable reception of signals, ensuring that the stabilization control device can continue to operate normally during the busbar protection overhaul, thereby improving the overall stability of the system. The specific contents are as follows: 1. Signal transmission path optimization 1) Conversion between optical fiber GOOSE networking trip signal and hard contact signal Based on the existing technology that the stabilization control device receives the GOOSE tripping signal of the bus protection through the optical fiber GOOSE networking mode, the stabilization control device that receives the tripping signal converts the signal into a conventional hard contact signal output without delay. The hard contact signal can be sent to another set of stabilization control devices as its input signal. This conversion and transmission mechanism ensures the relative independence of the signal. The two sets of stabilization control devices do not directly interact with each other in the form of network communication, meeting the power industry's requirements that the networks of the dual stabilization control devices should be independent of each other.

[0039] 2) Dual-path signal receiving mechanism The busbar protection tripping GOOSE receiving soft pressure plate and another set of busbar protection tripping signal hard pressure plate are set in the stabilization control device. The way for the stabilization control device to receive the busbar protection tripping signal is optimized as follows: Method 1: Through the optical fiber GOOSE networking mode, the busbar protection tripping GOOSE receives the signal through the soft pressure plate.

[0040] Method 2: Use another set of stabilization device to generate a conventional hard contact signal and receive the signal through the hard pressure plate.

[0041] At the same time, the logic optimization of the stabilization control device is: perform an "OR" operation on the busbar protection tripping signals received by the two paths, that is, the signal received by any path is considered valid. This dual-path receiving mechanism ensures the redundancy and reliability of the signal. Even if one path fails, the other path can still ensure the normal reception of the signal.

[0042] The busbar protection tripping GOOSE receiving soft pressure plate added to the stabilization device of the present invention is used to flexibly control the way in which the stabilization device receives the busbar protection tripping signal to adapt to different operating modes and maintenance requirements. Its functions are as follows: 1. When the soft pressure plate is put into operation: the stabilization and control device receives and processes the GOOSE tripping signal sent by the busbar protection, and at the same time performs data and link abnormality identification and alarm.

[0043] 2. When the soft pressure plate is withdrawn: the stabilization control device does not receive and process the GOOSE tripping signal, and stops the data and link abnormality judgment.

[0044] Through this function, when the busbar protection is under maintenance, the GOOSE receiving soft pressure plate of the corresponding stabilizing control device is exited to avoid the impact of the single busbar protection exiting operation on the stabilizing control device. At the same time, the hard pressure plate receiving the busbar protection tripping signal of another stabilizing control device is put into use to ensure that the stabilizing control device can still receive the busbar protection tripping signal normally and realize its logical function.

[0045] 2. Stable control of operation and maintenance process 1) Normal operation mode Under normal operating mode, the stabilization control device receives the GOOSE tripping signal of the bus protection through the optical fiber GOOSE networking method, that is, the bus protection tripping GOOSE receiving soft pressure plate is in the engaged state, and the hard pressure plate receiving the bus protection tripping signal of another set of stabilization control device is in the exit state.

[0046] 2) Busbar protection maintenance When a single busbar protection system needs to be shut down for maintenance, the operation and maintenance personnel need to perform the following operations on the corresponding stabilization and control device: a) Put the hard pressure plate into operation: Put the hard pressure plate into operation to receive the bus protection tripping signal of another set of stabilization and control device.

[0047] b) Exit the soft pressure plate: Exit the soft pressure plate that receives the busbar protection GOOSE tripping signal.

[0048] After completing the above operations, the busbar protection is shut down for maintenance, while the corresponding stabilization and control device can still maintain normal operation through the hard contact signal of another set of stabilization and control devices. This operation process is simple and clear, ensuring that the stabilization and control device will not be interrupted during the maintenance of the busbar protection, and solving the problem that the corresponding stabilization and control device is forced to be repaired or shut down at the same time when the busbar protection is being maintained.

[0049] The present invention ensures that the stabilization and control device can continue to operate normally during the busbar protection maintenance of the dual-mother dual-section main connection intelligent substation through a dual-path signal receiving mechanism and an optimized operation and maintenance process. This solution not only improves the overall stability of the system, but also simplifies the operation and maintenance process, reducing the systemic risks caused by maintenance. The stabilization and control device receives the busbar protection GOOSE tripping signal through optical fiber GOOSE networking and converts it into a conventional hard contact signal, ensuring the redundancy and reliability of the signal. When the busbar protection of the dual-mother dual-section main connection intelligent substation is being maintained, the operation and maintenance personnel only need to perform simple operations to ensure the normal operation of the stabilization and control device, greatly improving the reliability of the system and the operation and maintenance efficiency.

[0050] Taking a 220kV dual-bus dual-section main connection intelligent substation as an example, when the A-set busbar protection needs to be shut down for maintenance, the specific implementation steps are as follows: 1. Put A set of stabilizing control device into use to receive the conventional hard contact signal of another set of stabilizing control device into the hard pressure plate; 2. Exit the busbar protection tripping GOOSE receiving soft pressure plate in the A set of stabilization control device; 3. After completing the above operations, the A-set busbar protection is out of operation and can be repaired, and the A-set stabilizing control device can operate normally; 4. After the overhaul of busbar protection set A is completed, the operation is resumed; 5. Put the busbar protection tripping GOOSE receiving soft pressure plate in the A set of stabilization control device into use; 6. Exit the A set of stabilization control device to receive the open hard pressure plate of the conventional hard contact signal of another set of stabilization control device, that is, Restore the A set stabilization control and use the A set busbar protection GOOSE to trip the normal operation mode.

[0051] Taking a 220kV dual-bus dual-section main connection intelligent substation as an example, when the B bus protection needs to be shut down for maintenance, the specific implementation steps are as follows: 1. Put the B set of stabilizing control device into the hard pressure plate to receive the conventional hard contact signal of another set of stabilizing control device; 2. Exit the busbar protection tripping GOOSE receiving soft pressure plate in the B set stabilization control device; 3. After completing the above operations, the B busbar protection can be shut down for maintenance, and the A stabilizing control device can operate normally; 4. The B set of busbar protection is repaired and resumes operation; 5. Put the busbar protection tripping GOOSE receiving soft pressure plate in the B set stabilization control device into use; 6. Exit the B set of stabilization control device to receive the other set of stabilization control device's conventional hard contact signal and enter the hard pressure plate, that is, Restore the B set stabilization control and use the B set busbar protection to trip the normal operation mode of GOOSE.

Claims

1. A dual-bus intelligent substation stabilization control device based on dual-path signal reception, characterized in that: Smart substation stabilization and control devices include: Signal conversion module: used to convert the GOOSE tripping signal of the bus protection into a hard contact signal output without delay after the stabilization and control device receives the GOOSE tripping signal of the bus protection through the optical fiber GOOSE networking mode; Dual-path receiving module: It is equipped with a busbar protection tripping GOOSE receiving soft pressure plate and a hard pressure plate for receiving busbar protection tripping signals of another set of stabilizing control devices, which are used to receive signals through the busbar protection tripping GOOSE receiving soft pressure plate through the optical fiber GOOSE networking mode, and receive signals through the conventional hard contact point signals opened by another set of stabilizing control devices through the hard pressure plate; Logical operation module: performs an "OR" operation on the bus protection tripping signals received by the dual-path receiving module through two paths, and regards the signal received through any path as a valid signal.

2. The dual-bus intelligent substation stabilization control device based on dual-path signal reception according to claim 1 is characterized in that: During the process of converting and transmitting the hard-connection point signal by the signal conversion module, no information interaction in the form of network communication occurs between the two stabilization and control devices.

3. The dual-bus intelligent substation stabilization control device based on dual-path signal reception according to claim 1 is characterized in that: When the busbar protection tripping GOOSE receiving soft pressure plate is put into operation, the stabilization and control device receives and processes the GOOSE tripping signal sent by the busbar protection, and performs data and link abnormality judgment and alarm at the same time; when the soft pressure plate is exited, the stabilization and control device does not receive and process the GOOSE tripping signal, and stops data and link abnormality judgment at the same time.

4. The dual-bus intelligent substation stabilization control device based on dual-path signal reception according to claim 1 is characterized in that: The intelligent substation stabilization and control device also includes a control module connected to the dual-path receiving module and the logic operation module, which is used to control the input and output of the bus protection tripping GOOSE receiving soft pressure plate and the receiving bus protection tripping signal hard pressure plate of another stabilization and control device according to the operating status of the bus protection.

5. An operating method of the dual-bus intelligent substation stabilization control device based on dual-path signal reception according to any one of claims 1 to 4, characterized in that: The following steps are involved: Normal operation state: In normal operation mode, the busbar protection tripping GOOSE receiving soft pressure plate is put into operation, and the hard pressure plate receiving the busbar protection tripping signal of another set of stabilization and control device is withdrawn. The stabilization and control device receives the busbar protection GOOSE tripping signal through the optical fiber GOOSE networking mode; During the busbar protection maintenance, the operation steps of the stabilizing control device are as follows: when a single set of busbar protection needs to be shut down for maintenance, the hard pressure plate that receives the busbar protection tripping signal of another set of stabilizing control device is put into operation, and the soft pressure plate that receives the busbar protection GOOSE tripping signal is withdrawn, so that the stabilizing control device can maintain normal operation through the hard contact signal of another set of stabilizing control device; When the busbar protection is overhauled and put into operation, the operating steps of the stabilizing control device are as follows: when the busbar protection is overhauled and restored to operation, the soft pressure plate that receives the busbar protection GOOSE tripping signal is put into operation, and the hard pressure plate that receives the busbar protection tripping signal of another set of stabilizing control device is withdrawn, and the stabilizing control device is restored to the normal operation mode of the corresponding busbar protection tripping GOOSE.

6. The operating method of the dual-bus intelligent substation stabilization control device based on dual-path signal reception according to claim 5 is characterized in that: During the busbar protection inspection and commissioning after the protection inspection is completed, the operation steps of the stabilization and control device also include the step of real-time monitoring of the operating status of the stabilization and control device. When an abnormality is detected in the stabilization and control device, an alarm signal is issued.

7. The operating method of the dual-bus intelligent substation stabilization control device based on dual-path signal reception according to claim 5 is characterized in that: Before operating the stabilization control device during the busbar protection maintenance, the preparatory steps of checking and confirming the tools, equipment and personnel arrangements required for the maintenance are also included to ensure that the maintenance work can proceed smoothly.

8. The operating method of the dual-bus intelligent substation stabilization control device based on dual-path signal reception according to claim 5 is characterized in that: When the busbar protection is overhauled and put into operation, the signal access path is switched during the operation steps of the stabilization and control device, and the function of the stabilization and control device is not affected and does not need to be shut down; after the switch, check that the busbar protection tripping signal of the stabilization and control device is normal, which can ensure the coordinated working performance after resuming normal operation.

9. The operating method of the dual-bus intelligent substation stabilization control device based on dual-path signal reception according to claim 5 is characterized in that: The operations in the maintenance operation steps and the recovery operation steps are recorded in the operation log, which includes the operation time, operator, operation content and status information of the stabilization and control device before and after the operation.

10. The operating method of the dual-bus intelligent substation stabilization control device based on dual-path signal reception according to claim 5, characterized in that: During the busbar protection maintenance, based on the dual-path receiving mechanism and logic, the corresponding set of stability control devices can receive the busbar tripping signal by adjusting the signal receiving path, ensuring that the corresponding set of stability control devices continues to operate without being affected by the busbar protection maintenance.

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