A cloud-based relay protection system based on a 5G wireless network

Abstract

This invention discloses a cloud-based relay protection system based on a 5G wireless network, belonging to the field of power system protection technology. It includes: a distributed process layer terminal equipment group, used to acquire analog quantities, switching quantities, and operating status information of primary equipment, and to perform tripping or closing operations on circuit breakers or disconnectors according to tripping and closing commands; a cloud computing platform, used to generate calculation results based on the analog quantities, switching quantities, and operating status information of the primary equipment; a regional decision server, used to make a comprehensive judgment based on the calculation results, combined with the current status, voltage status, and power factor of the protected object, and to generate tripping and closing commands; and a 5G private network communication module, used to upload the analog quantities, switching quantities, and operating status information of the primary equipment to the cloud computing platform, transmit the calculation results to the regional decision server, and issue tripping and closing commands to the distributed process layer terminal equipment group. This system can achieve global collaborative protection and reduce the construction and operation and maintenance costs of substations.

Description

Technical Field

[0001] This invention relates to a cloud relay protection system based on a 5G wireless network, belonging to the field of power system protection technology. Background Technology

[0002] Power system relay protection is the first line of defense for ensuring the safe and stable operation of the power grid. Its core task is to quickly, reliably, and selectively disconnect faulty equipment when a system fault occurs. Currently, relay protection systems are generally configured with protection devices in panel cabinets in protection compartments of substations. These devices, based on collected electrical quantities, complete protection judgments through built-in hardware logic circuits or processors and directly drive circuit breakers to operate. This mode is highly hardware-dependent, difficult to upgrade and maintain. Protection functions are fixed in dedicated hardware devices. If it is necessary to modify the protection logic, add new functions, or fix software defects, it often requires hardware replacement or on-site power outages for upgrades, resulting in high operation and maintenance costs, poor flexibility, and difficulty in adapting to the rapidly changing needs of power grid operation. At the same time, each protection device only processes limited data from its own bay. When facing complex faults requiring collaborative judgment of information from multiple bays or implementing advanced applications such as station-area protection or wide-area protection, the lack of a global data view and centralized computing power makes it difficult to achieve optimal and collaborative protection strategies, which may lead to the escalation of accidents.

[0003] To meet reliability requirements, traditional substations typically employ a process-layer, bay-layer, and station control-layer architecture, and are equipped with a large number of secondary devices, cables, and complex network switching systems. This not only results in large substation footprints and high investment costs but also increases system complexity and potential failure points. Massive amounts of real-time electrical data are scattered across various isolated devices, used only for local protection decisions, lacking efficient aggregation and in-depth analysis. This makes it difficult to effectively implement advanced intelligent applications based on big data analytics, such as equipment condition assessment, fault early warning, and operation optimization. Summary of the Invention

[0004] The purpose of this invention is to provide a cloud relay protection system based on 5G wireless network, which can solve the problems of strong hardware dependence, difficulty in coordination and redundant computing resources in traditional protection systems, realize global collaborative protection, and reduce the construction and operation and maintenance costs of substations.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A cloud relay protection system based on a 5G wireless network includes: The distributed process layer terminal equipment group is used to acquire analog quantities, switch quantities and operating status information of primary equipment, and to perform tripping or closing operations on circuit breakers or disconnect switches according to tripping or closing commands. The cloud computing platform is used to perform protection logic operations based on the analog quantities, switch quantities and operating status information of primary equipment, and to generate calculation results containing fault information and operating abnormality information. The regional decision server is used to make a comprehensive judgment based on the calculation results, combined with the current state, voltage state and power factor of the protected object, and generate trip and close commands; The 5G private network communication module is used to wirelessly transmit analog quantities, switch quantities, and operating status information of primary equipment obtained by the distributed process layer terminal equipment group to the cloud computing platform, transmit the calculation results generated by the cloud computing platform to the regional decision server, and issue trip and close commands generated by the regional decision server to the distributed process layer terminal equipment group.

[0006] Furthermore, the distributed process layer terminal equipment group, as the only existing equipment layer, is located within the substation and consists of several terminal devices. Each terminal device is configured according to the power interval and installed locally next to its corresponding primary equipment.

[0007] Furthermore, each line bay, main transformer bay, and voltage transformer bay is equipped with a corresponding terminal device.

[0008] Furthermore, the fault information includes the fault type, fault location, and fault current and voltage values; the operational anomaly information includes overload, voltage anomaly, and frequency deviation.

[0009] Furthermore, the regional decision server also provides a graphical monitoring interface to display the analog, digital, and operating status information of primary equipment obtained by the distributed process layer terminal equipment group, enabling operators to directly issue trip and close commands to designated terminal equipment.

[0010] Furthermore, the regional decision server generates operation suggestions within the safety threshold for the trip and close commands to be reviewed, and after manual review and confirmation, it sends them to the distributed process layer terminal equipment group through the 5G private network communication module.

[0011] Furthermore, the regional decision server is deployed in the regional dispatch center and adopts a dual configuration, including a primary decision server that runs online and a backup decision server that is in real-time hot standby. An automatic switching mechanism is provided between the primary decision server and the backup decision server, so that when the primary decision server fails, the backup decision server can seamlessly take over all its functions.

[0012] Furthermore, the 5G private network communication module adopts an end-to-end encrypted communication and independent physical isolation architecture, and communicates with the distributed process layer terminal equipment group, cloud computing platform and regional decision server respectively.

[0013] Compared with the prior art, the beneficial effects of the present invention are: The cloud-based relay protection system based on 5G wireless network provided by this invention decouples the core computing functions of relay protection from traditional, distributed local hardware devices and migrates them to a cloud computing platform for centralized processing. Simultaneously, it utilizes a 5G private network communication module to build a real-time data channel with the substation process layer, changing the protection function's reliance on physical hardware and transforming it into a flexible, deployable, upgradeable, and expandable software service. By eliminating traditional station control layer, bay layer equipment, and related secondary cable networks, only process layer terminal equipment remains within the substation, reducing investment in protection devices, cabinets, cables, and corresponding civil engineering space. It is estimated that this can significantly reduce the overall construction and equipment investment costs of the substation. Relying on the elastic computing resources of the cloud computing platform, complex protection algorithms and multi-bay collaborative logic operations can be completed within microseconds. Combined with the deterministic low latency of the 5G network, it can achieve a millisecond-level end-to-end response from fault occurrence, cloud identification, decision generation to command issuance, improving the speed of protection and effectively limiting the scope of fault impact. The cloud computing platform aggregates real-time data uploaded by all terminals within the region, forming a unified global data pool. A dedicated 5G network employs end-to-end encryption and physical isolation to ensure the security and privacy of control commands and sensitive data during transmission. Based on this global information view, the regional decision server makes comprehensive judgments, enabling site-wide collaborative protection and wide-area protection strategies that traditional single-interval protection cannot achieve. The regional decision server can employ dual hot standby configurations with automatic switching capabilities, ensuring that any single point of failure does not affect continuous system operation. A manual review and confirmation process constitutes double protection for control commands, preventing misoperation caused by software logic errors or network anomalies, thus enhancing system security. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the architecture of a cloud relay protection system based on a 5G wireless network provided in an embodiment of the present invention. Detailed Implementation

[0015] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0016] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Unless otherwise specified, embodiments of the present invention and the technical features thereof can be combined with each other.

[0017] Figure 1 This is a schematic diagram of the cloud relay protection system based on a 5G wireless network provided in this embodiment. This diagram only shows the structural framework of the system in this embodiment. Without conflict, different implementations are possible. Figure 1 The structure shown implements cloud relay protection.

[0018] This invention provides a cloud relay protection system based on a 5G wireless network, comprising: The distributed process layer terminal equipment group is used to acquire analog quantities, switch quantities and operating status information of primary equipment, and to perform tripping or closing operations on circuit breakers or disconnect switches according to tripping or closing commands. The cloud computing platform is used to perform protection logic operations based on the analog quantities, switch quantities and operating status information of primary equipment, and to generate calculation results containing fault information and operating abnormality information. The regional decision server is used to make a comprehensive judgment based on the calculation results, combined with the current state, voltage state and power factor of the protected object, and generate trip and close commands; The 5G private network communication module is used to wirelessly transmit analog quantities, switch quantities, and operating status information of primary equipment obtained by the distributed process layer terminal equipment group to the cloud computing platform, transmit the calculation results generated by the cloud computing platform to the regional decision server, and issue trip and close commands generated by the regional decision server to the distributed process layer terminal equipment group.

[0019] The cloud relay protection system based on 5G wireless network provided in this invention decouples relay protection functions from distributed local hardware devices and migrates them to centralized processing in the cloud. It also utilizes a 5G private network to achieve millisecond-level real-time interaction with substation process layer terminal equipment. This solves the problems of strong hardware dependence, difficulty in coordination, redundant computing resources, and inconvenient upgrades in traditional protection systems. It realizes flexible and globally coordinated protection functions, while reducing the construction and operation and maintenance costs of substations.

[0020] In one possible embodiment, the distributed process layer terminal equipment group is located in the substation as the only existing equipment layer. It consists of several terminal equipment, each of which is configured according to the power interval and installed locally next to its corresponding primary equipment.

[0021] Specifically, each line bay, main transformer bay, and voltage transformer bay is equipped with a terminal device.

[0022] In this embodiment, the process layer terminal equipment is the only equipment layer existing within the substation, replacing and eliminating the traditional station control layer equipment, bay layer equipment, corresponding network, and main control room in a substation. The terminal equipment supports unprotected installation and wireless communication. It is responsible for real-time acquisition of analog, digital, and operational status information from primary equipment, uploading this information to the cloud computing platform via a 5G private network communication module in the form of network packets. Simultaneously, it receives trip / close commands from the regional decision server via the 5G private network communication module and responds with corresponding message requests or executes the corresponding trip / close commands.

[0023] In one possible embodiment, fault information includes fault type, fault location, and fault current and voltage values; operational anomaly information includes overload, voltage anomaly, and frequency offset.

[0024] Specifically, the computing results of the cloud computing platform include fault information such as fault type, fault point, fault current and voltage values ​​of primary equipment in substations within a specified area, as well as abnormal operating information such as overload, low voltage, and frequency deviation.

[0025] In one possible embodiment, the regional decision server also provides a graphical monitoring interface to display the analog quantities, switching quantities, and operating status information of the primary equipment obtained by the distributed process layer terminal equipment group, enabling operators to directly issue trip and close commands to the designated terminal equipment.

[0026] Specifically, the regional decision server provides a monitoring backend and remote control functions, which can display the online monitoring information sent by the terminal devices in a graphical way, making it easy for operators to check the equipment operating status; operators can directly perform trip and close operations on the terminal devices through a dedicated server without having to judge the calculation results of the cloud computing platform.

[0027] In one possible embodiment, the regional decision server generates an operation suggestion within a safety threshold for the trip and close command to be reviewed, and after manual review and confirmation, it sends it to the distributed process layer terminal equipment group through the 5G private network communication module.

[0028] Specifically, the cloud computing platform only provides computing logic and computing power. The system adopts a decision-execution separation architecture. For operations that require manual review, it only generates operation suggestions within the safety threshold. The final instruction must be manually reviewed and confirmed to achieve a dual protection mechanism.

[0029] In one possible embodiment, the regional decision server is deployed in the regional dispatch center and is configured in two ways: a primary decision server that is running online and a backup decision server that is in real-time hot standby. An automatic switching mechanism is provided between the primary decision server and the backup decision server, so that when the primary decision server fails, the backup decision server can take over all its functions without interruption.

[0030] Specifically, the regional decision-making server is maintained by the power grid company itself and can be deployed in the regional dispatch center. To improve reliability, dual configurations can be used.

[0031] In one possible embodiment, the 5G private network communication module adopts an end-to-end encrypted communication and independent physical isolation architecture, and communicates with the distributed process layer terminal equipment group, the cloud computing platform and the regional decision server respectively.

[0032] Specifically, the 5G private network communication module adopts end-to-end encrypted communication and independent physical isolation architecture, which can realize a closed-loop security system with zero leakage of sensitive data; at the same time, it provides dedicated bandwidth resources and deterministic latency guarantee, supports millisecond-level precise control of industrial automation equipment, builds a cloud-edge collaborative architecture for power grid companies, and provides highly reliable cloud storage and distributed cloud computing services.

[0033] The cloud relay protection system based on 5G wireless network provided in this embodiment of the invention consists of a distributed process layer terminal equipment group, a cloud computing platform, a regional decision server, and a 5G private network communication module working together to form a closed-loop system that completes the relay protection function.

[0034] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A cloud relay protection system based on a 5G wireless network, characterized in that, include: The distributed process layer terminal equipment group is used to acquire analog quantities, switch quantities and operating status information of primary equipment, and to perform tripping or closing operations on circuit breakers or disconnect switches according to tripping or closing commands. The cloud computing platform is used to perform protection logic operations based on the analog quantities, switch quantities and operating status information of primary equipment, and to generate calculation results containing fault information and operating abnormality information. The regional decision server is used to make a comprehensive judgment based on the calculation results, combined with the current state, voltage state and power factor of the protected object, and generate trip and close commands; The 5G private network communication module is used to wirelessly transmit analog quantities, switch quantities, and operating status information of primary equipment obtained by the distributed process layer terminal equipment group to the cloud computing platform, transmit the calculation results generated by the cloud computing platform to the regional decision server, and issue trip and close commands generated by the regional decision server to the distributed process layer terminal equipment group.

2. The cloud relay protection system based on 5G wireless network according to claim 1, characterized in that, The distributed process layer terminal equipment group is the only existing equipment layer located in the substation. It consists of several terminal devices, each configured according to the power interval and installed locally next to its corresponding primary equipment.

3. The cloud relay protection system based on 5G wireless network according to claim 2, characterized in that, Each line bay, main transformer bay, and voltage transformer bay is equipped with a corresponding terminal device.

4. The cloud relay protection system based on 5G wireless network according to claim 1, characterized in that, Fault information includes fault type, fault location, and fault current and voltage values; abnormal operation information includes overload, voltage anomaly, and frequency deviation.

5. The cloud relay protection system based on 5G wireless network according to claim 1, characterized in that, The regional decision server also provides a graphical monitoring interface to display the analog, digital and operating status information of primary equipment obtained by the distributed process layer terminal equipment group, enabling operators to directly issue trip and close commands to designated terminal equipment.

6. The cloud relay protection system based on 5G wireless network according to claim 1, characterized in that, The regional decision server generates operation suggestions within the safety threshold for the trip and close commands to be reviewed, and after manual review and confirmation, it sends them to the distributed process layer terminal equipment group through the 5G private network communication module.

7. The cloud relay protection system based on 5G wireless network according to claim 1, characterized in that, The regional decision server is deployed in the regional dispatch center and adopts a dual configuration, including a primary decision server that runs online and a backup decision server that is in real-time hot standby. There is an automatic switching mechanism between the primary decision server and the backup decision server. When the primary decision server fails, the backup decision server will take over all its functions without interruption.

8. The cloud relay protection system based on 5G wireless network according to claim 1, characterized in that, The 5G private network communication module adopts an end-to-end encrypted communication and independent physical isolation architecture, and communicates with the distributed process layer terminal equipment group, cloud computing platform and regional decision server respectively.

Images