Power grid IP link proxy communication system and method

Abstract

The invention provides a power grid IP link proxy communication system and method, and the system comprises power equipment which is provided with a data collection module. The power equipment establishes network connection with the power master station through the proxy communication module; the proxy communication module comprises a base station electric gateway EGW and EGW proxy electric power equipment, and establishes network connection with an electric power master station; the electric power base station is connected to the EGW to carry out communication protocol conversion; the power base station is also connected with the CPE through a wireless air interface transmission protocol; and the CPE agents the power master station to establish network connection with the power equipment. Through the B2B proxy mode, the extra data volume of the wireless air interface is not increased, the requirement that the power equipment and the power master station are interconnected through an IP link is met, and collection and transmission of large-batch power equipment data information can be achieved.

Description

Technical Field

[0001] This invention belongs to the field of power grid operation and maintenance technology, and in particular relates to a power grid IP link proxy communication system and method. Background Technology

[0002] In the operation and maintenance of power grids, power equipment management is a core component in ensuring the safe and stable operation of the power system. Its management encompasses multiple aspects, including full lifecycle control of equipment, multi-level inspection systems, condition monitoring and predictive maintenance, and emergency response to faults. Power grid operation and maintenance requires real-time collection of data and operational status from various underlying power equipment, using this information as a basis for scientific decision-making.

[0003] Existing patent CN223124914U discloses a substation power equipment testing data acquisition system, comprising: a power grid management platform configured with a data transmission communication protocol for data transmission between the power grid management platform and external systems; a testing device equipped with a Bluetooth communication module for testing substation power equipment, the Bluetooth communication module for transmitting data detected by the testing device; the testing device also configured with a data transmission communication protocol for data transmission between the testing device and the power grid management platform; and a workstation host configured with a data transmission communication protocol, enabling data transmission between the workstation host and the testing device, and between the workstation host and the power grid management platform. Summary of the Invention

[0004] In existing power grids, the connection between the power substation and power equipment is via IP. Base stations, acting as Layer 2 switches or Layer 3 routers, transmit Layer 2 or higher network packets (ICMP, ARP, TCP establishment and teardown messages, Ethernet packets, etc.) between the power substation and power equipment via wireless over-the-air interfaces. When a large number of power devices (>=8000) need to connect to the power substation, transmitting these network control messages (ICMP, ARP, TCP establishment and teardown messages) via wireless over-the-air interfaces will consume significant air interface resources, preventing normal services from functioning. Furthermore, air interfaces have weak interference resistance; under weak signal conditions, this can cause TCP connection establishment failures across air interfaces, or network control message loss and timeouts, resulting in system service unavailability.

[0005] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: a power grid IP link proxy communication system, including power equipment, the power equipment being equipped with a data acquisition module; the power equipment establishing a network connection with the power master station through the proxy communication module; the proxy communication module including a base station power gateway EGW, the EGW acting as an agent for the power equipment to establish a network connection with the power master station; the power base station accessing the EGW to perform communication protocol conversion; the power base station also connecting with the device front-end node CPE via a wireless air interface transmission protocol; the CPE acting as an agent for the power master station to establish a network connection with the power equipment.

[0006] Specifically, the data acquisition module collects real-time data and status information of the power equipment and sends it to the power master station through the proxy communication module; the power master station collects real-time data and status information of the power equipment, presents it to users in a visual format, and uses the data as a basis for power grid operation and maintenance decisions.

[0007] Specifically, the power equipment and the power master station establish TCP or UDP communication through the proxy communication module. The EGW controls the communication type established by the proxy communication module and is responsible for the configuration and login of CPE devices, access to base stations, connection to the power master station, and transparent transmission and distribution of data.

[0008] Specifically, when establishing TCP between power equipment and the power master station through the proxy communication module, the EGW is configured with the power master station as the TCP server and the power equipment as the TCP client; or the power master station is configured as the TCP client and the power equipment as the TCP server.

[0009] Specifically, when the power station acts as a TCP server and the power equipment acts as a TCP client, the power equipment, acting as a TCP client, initiates a connection to the power station, which is proxied by the CPE, acting as a TCP server.

[0010] Specifically, when the power master station acts as a TCP client and the power equipment acts as a TCP server, the EGW proxy initiates a connection between the power equipment (as a TCP client) and the power master station (as a TCP server).

[0011] Specifically, the EGW obtains the current offline or online status of the power equipment through heartbeat messages with the power equipment; when the heartbeat message is disconnected, the connection of the power equipment is not deleted, but it is switched to an offline state.

[0012] This invention also provides a power grid IP link proxy communication method, applied to the aforementioned power grid IP link proxy communication system. When the communication type established by the EGW control proxy communication module is TCP protocol, if the power equipment performs a new network access or deletion operation, the following steps are performed: S1-1, The power master station acts as the TCP server, and the power equipment acts as the TCP client. The power equipment initiates a TCP connection to the CPE that acts as the proxy of the power master station. S1-2: The CPE obtains information about newly added or deleted power equipment and sends it to the power base station. The power base station performs protocol conversion and then sends it to the EGW. S1-3. After receiving information records of newly added power equipment from the power base station, the EGW establishes a connection with the power master station; after receiving information records of deleted power equipment from the EGW, the connection with the power master station is terminated.

[0013] When the power master station acts as a TCP client and the power equipment acts as a TCP server, and the power equipment is manually deleted, the following steps are performed: S2-1. The network administrator adds or deletes power equipment information records in the EGW. S2-2, The power base station forwards EGW information on newly added or deleted power equipment to the CPE; S2-3. Based on the information of newly added or deleted power equipment forwarded by the power base station, the CPE acts as an agent for the power master station to establish a TCP connection with the newly added power equipment or close a TCP connection with the deleted power equipment.

[0014] When the power master station and power equipment communicate using UDP, and power equipment is added or deleted manually, the following steps are performed: S3-1. The network administrator inputs new or deleted information records of power equipment into the EGW; S3-2. When the EGW receives information records of newly added power equipment, it creates a UDP SOCKET; when the EGW receives information records of deleted power equipment, it deletes the UDP SOCKET; finally, the information of newly added or deleted power equipment is forwarded to the CPE through the power base station. S3-3. When the CPE receives a record of newly added power equipment, it adds the power equipment information and creates a UDP SOCKET; when the CPE receives a record of deleted power equipment, it deletes the power equipment information and deletes the UDP SOCKET.

[0015] The beneficial effects of this invention are that, through a B2B (back-to-back) proxy method, it meets the requirement of IP link interconnection between power equipment and power master stations without increasing the amount of additional data on the wireless air interface, enabling the collection and transmission of large amounts of power equipment data. Furthermore, this invention is compatible with multiple types of IP communication protocols, allowing for diverse configurations and a wider range of applications. Attached Figure Description

[0016] Figure 1 This is a system structure diagram of the present invention.

[0017] Figure 2 This is a flowchart illustrating the manual configuration of newly added power equipment according to the present invention.

[0018] Figure 3 This is a timing diagram showing the automatic online identification of power equipment when the power station acts as a TCP server and the power equipment acts as a TCP client.

[0019] Figure 4 This is a timing diagram for automatic offline identification of power equipment when the power master station acts as the TCP server and the power equipment acts as the TCP client.

[0020] Figure 5 This is a timing diagram showing the manual configuration of power equipment when the power station acts as a TCP server and the power equipment acts as a TCP client.

[0021] Figure 6 When the power station acts as a TCP client and the power equipment acts as a TCP server, manually configure and add the timing diagram of the power equipment.

[0022] Figure 7 When the power master station acts as a TCP client and the power equipment acts as a TCP server, manually configure the timing diagram for deleting the power equipment.

[0023] Figure 8 When using UDP communication between the power master station and power equipment, manually configure and add timing diagrams for the power equipment.

[0024] Figure 9 When using UDP communication between the power master station and power equipment, manually configure the timing diagram for deleting power equipment.

[0025] Figure 10 This is a timing diagram of heartbeat message communication between the power equipment and the EGW. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] Example 1: A power grid IP link proxy communication system, such as Figure 1 As shown, the system includes power equipment equipped with a data acquisition module. The power equipment establishes a network connection with the power master station through a proxy communication module. The proxy communication module includes a base station power gateway (EGW), which acts as an agent for the power equipment to establish a network connection with the power master station. The power base station accesses the EGW to perform communication protocol conversion. The power base station also connects to the device front-end node (CPE) via a wireless air interface transmission protocol. The CPE acts as an agent for the power master station to establish a network connection with the power equipment.

[0028] The data acquisition module collects real-time data and status information of the power equipment and sends it to the power master station through the proxy communication module. The power master station collects and presents the status information (online and offline) and data information (such as voltage and current) of the power equipment, presenting the electricity consumption situation to users and providing a basis for scientific decision-making.

[0029] The power gateway EGW is responsible for configuring and logging into CPE devices, accessing base stations, connecting to the power master station, and transmitting and distributing data. The power base station is responsible for receiving and sending air interface data and converting air interface protocols to EGW protocols. The CPE connects to the power equipment, communicates with the power equipment through the southbound interface, and communicates with the base station wirelessly through the northbound interface, playing the role of a communication node that connects the upper and lower layers.

[0030] Power equipment and the power master station establish TCP or UDP communication through a proxy communication module. The EGW controls the communication type established by the proxy communication module and is responsible for CPE device configuration and login, base station access, power master station integration, and data transmission and distribution. When establishing TCP communication between power equipment and the power master station through the proxy communication module, the network administrator can configure the EGW to select one of the power master station and power equipment as the TCP client and the other as the TCP server. After configuring the TCP client and server, the TCP client initiates a connection to the TCP server. Specifically, since the EGW acts as a proxy for the power equipment and the CPE acts as a proxy for the power master station, the actual TCP connection is established between the power master station and the EGW, and between the CPE and the power equipment, forming a B2B back-to-back proxy connection. External network administrators can control the addition or deletion of power equipment through the EGW and can also configure the overall communication method to be TCP or UDP.

[0031] In this embodiment, power equipment is used as the data acquisition object, which is the source of the data. It includes all physical equipment in the power grid that needs to be monitored. These devices themselves or their associated IEDs directly measure and generate raw electrical and non-electrical quantity data (such as voltage, current, power, frequency, oil temperature, switch position, etc.) through sensors and transformers.

[0032] The data acquisition module is the "frontline outpost" for data acquisition, responsible for collecting data from the acquisition object layer and sending the data to the data access forwarding layer via the air interface.

[0033] The power gateway EGW, power base station, and equipment front-end node CPE constitute the data access forwarding layer and gateway adaptation layer, which is the "information highway" connecting the data collection object and the main station. It is responsible for reliable data transmission, protocol conversion and process adaptation, and completes the docking with the main station.

[0034] The power station is the "brain" and "heart" of the entire power grid operation and maintenance process. It is responsible for data collection, processing, storage and application, and provides support for the intelligent operation and decision-making of the power grid through more complex algorithms and models.

[0035] In this embodiment, the EGW obtains the current offline or online status of the power equipment through heartbeat messages with the power equipment; when the heartbeat message is disconnected, the connection to the power equipment is not deleted, but it is switched to an offline state. The heartbeat between the power equipment and the EGW is specifically implemented in the following way: Figure 10 As shown, the power equipment first sends a power heartbeat message to the CPE. The CPE responds with a heartbeat and sends a CPE heartbeat message containing the power equipment status to the power base station. The power base station forwards the CPE heartbeat message containing the power equipment status to the EGW. The EGW maintains the power equipment status based on the heartbeat message and sends the heartbeat message to the power master station. The power master station responds to the heartbeat message, completing a status update communication for the heartbeat message.

[0036] In specific applications, such as Figure 3 As shown, if the communication type established by the EGW control agent communication module is TCP protocol, and the power master station acts as the TCP server and the power equipment acts as the TCP client, then when a new power equipment is connected to the power grid, the power master station will automatically discover, configure, and connect to the power equipment via the TCP protocol. The power equipment, acting as the TCP server, initiates a TCP connection to the CPE acting as the agent for the power master station. At this time, the CPE obtains the information about the added power equipment and sends it to the base station. The base station adds the power equipment information and forwards it to the EGW. The EGW receives the information about the newly added power equipment, adds the record, and establishes a TCP connection with the power master station, thus completing the TCP connection between the power equipment and the power master station.

[0037] If power equipment is offline, the power master station will automatically identify the offline status of the equipment, such as... Figure 4 As shown, the power equipment first disconnects from the CPE of the proxy power station. At this time, the heartbeat message is interrupted. The CPE obtains the information of the deleted power equipment and sends it to the power base station. The power base station deletes the information of the power equipment and forwards the deletion record to the EGW. After receiving the deletion record of the deleted power equipment information, the EGW interrupts the connection with the power station, thereby disconnecting the TCP connection between the offline power equipment and the power station, and completing the automatic identification of the offline power equipment.

[0038] In practical applications, if manual configuration of electrical equipment by external personnel is required, such as when adding new electrical equipment, Figure 5As shown, the power master station can act as a TCP server and the power equipment as a TCP client. First, the network administrator adds power equipment information to the EGW. The EGW records the power equipment information and acts as a proxy for the power equipment to send TCP connection requests to the power master station as a TCP client, establishing a connection with the power master station. At the same time, the power equipment information is sent to the power base station, which then forwards it to the CPE. The CPE records the information of the newly added power equipment and acts as a proxy for the master station to receive TCP connection requests from the TCP client power equipment.

[0039] If you need to remove electrical equipment, such as Figure 5 As shown, the network administrator deletes the power equipment in the EGW and acts as an agent to disconnect the TCP connection between the EGW and the power master station. The EGW sends the deleted power equipment information to the power base station, which then forwards it to the CPE. The CPE deletes the power equipment information and acts as an agent to disconnect the TCP connection between the power master station and the power equipment.

[0040] In practical applications, external personnel manually configure the power equipment. When adding new power equipment, the power master station can act as a TCP client, and the power equipment as a TCP server. For example... Figure 6 As shown, when adding a new power device, the network administrator adds the information of the new power device to the EGW. After receiving the information, the EGW acts as a TCP server for the power device, receiving TCP connection requests sent by the power master station as a TCP client. At the same time, the EGW sends the new power device information record to the power base station and establishes a device connection with the power base station. The power base station forwards the new power device information record to the CPE and establishes a device connection with the CPE. The CPE records the new power device information and acts as a TCP client for the master station, sending TCP connection requests to the corresponding power device, thus completing the TCP connection between the power master station and the power device.

[0041] If you need to delete the device, such as Figure 7 As shown, the network administrator first controls the EGW to delete power equipment information. The EGW, acting as an agent for the power equipment, closes the TCP connection between the power equipment and the power master station, sends the deleted power equipment information to the power base station, and closes the device connection with the power base station. The power base station forwards the deleted power equipment information to the CPE. After the CPE records the deleted power equipment information, the power base station also closes the device connection with the CPE. Based on the recorded deleted power equipment information, the CPE, acting as an agent for the power master station as a TCP client, closes the TCP connection with the power equipment, which is acting as a TCP server.

[0042] In practical applications, UDP communication can also be used between the power station and power equipment. This is useful if manual configuration or addition of power equipment is required, such as... Figure 8 As shown, the network administrator first adds new power equipment information to the EGW. After receiving the new power equipment information, the EGW creates a UDP SOCKET on behalf of the power master station and sends it to the power base station. The power base station forwards the new power equipment information to the CPE. After recording the new power equipment information, the CPE creates a UDP SOCKET on behalf of the power master station, thus completing the UDP connection between the power master station and the power equipment.

[0043] If manual configuration is required to remove electrical equipment, such as Figure 9 As shown, the network administrator first deletes the power equipment information from the EGW. After receiving the record of the power equipment information deletion, the EGW deletes the UDP socket on behalf of the power master station and sends it to the power base station. The power base station forwards the power equipment information deletion to the CPE. After the CPE deletes the power equipment information, it deletes the UDP socket on behalf of the power master station and disconnects the UDP connection between the power master station and the power equipment.

[0044] Example 2: A power grid IP link proxy communication system includes power equipment, which is equipped with a data acquisition module. The power equipment establishes a network connection with the power master station through the proxy communication module. The proxy communication module includes a base station power gateway (EGW), which acts as an agent for the power equipment and establishes a network connection with the power master station. The power base station accesses the EGW to perform communication protocol conversion. The power base station also connects to the device front-end node (CPE) via a wireless air interface transmission protocol. The CPE acts as an agent for the power master station to establish a network connection with the power equipment.

[0045] The data acquisition module collects real-time data and status information of the power equipment and sends it to the power master station through the proxy communication module. The power master station collects and presents the status information (online and offline) and data information (such as voltage and current) of the power equipment, presenting the electricity consumption situation to users and providing a basis for scientific decision-making.

[0046] The power gateway EGW is responsible for configuring and logging into CPE devices, accessing base stations, connecting to the power master station, and transmitting and distributing data. The power base station is responsible for receiving and sending air interface data and converting air interface protocols to EGW protocols. The CPE connects to the power equipment, communicates with the power equipment through the southbound interface, and communicates with the base station wirelessly through the northbound interface, playing the role of a communication node that connects the upper and lower layers.

[0047] Power equipment and the power master station establish TCP or UDP communication through a proxy communication module. The EGW controls the communication type established by the proxy communication module and is responsible for CPE device configuration and login, base station access, power master station integration, and data transmission and distribution. When establishing TCP communication between power equipment and the power master station through the proxy communication module, the network administrator can configure the EGW to select one of the power master station and power equipment as the TCP client and the other as the TCP server. After configuring the TCP client and server, the TCP client initiates a connection to the TCP server. Specifically, since the EGW acts as a proxy for the power equipment and the CPE acts as a proxy for the power master station, the actual TCP connection is established between the power master station and the EGW, and between the CPE and the power equipment, forming a B2B back-to-back proxy connection. External network administrators can control the addition or deletion of power equipment through the EGW and can also configure the overall communication method to be TCP or UDP.

[0048] In this embodiment, power equipment is used as the data acquisition object, which is the source of the data. It includes all physical equipment in the power grid that needs to be monitored. These devices themselves or their associated IEDs directly measure and generate raw electrical and non-electrical quantity data (such as voltage, current, power, frequency, oil temperature, switch position, etc.) through sensors and transformers.

[0049] The data acquisition module is the "frontline outpost" for data acquisition, responsible for collecting data from the acquisition object layer and sending the data to the data access forwarding layer via the air interface.

[0050] The power gateway EGW, power base station, and equipment front-end node CPE constitute the data access forwarding layer and gateway adaptation layer, which is the "information highway" connecting the data collection object and the main station. It is responsible for reliable data transmission, protocol conversion and process adaptation, and completes the docking with the main station.

[0051] The power station is the "brain" and "heart" of the entire power grid operation and maintenance process. It is responsible for data collection, processing, storage and application, and provides support for the intelligent operation and decision-making of the power grid through more complex algorithms and models.

[0052] In this embodiment, the EGW obtains the current offline or online status of the power equipment through heartbeat messages with the power equipment. When the heartbeat message is disconnected, the connection of the power equipment is not deleted, but it is switched to an offline state. The heartbeat between the power equipment and the EGW is implemented as follows: the power equipment first sends a power heartbeat message to the CPE, the CPE responds with a heartbeat and sends a CPE heartbeat message with the power equipment status to the power base station; the power base station forwards the CPE heartbeat message with the power equipment status to the EGW; the EGW maintains the power equipment status according to the heartbeat message and sends the heartbeat message to the power master station; the power master station responds to the heartbeat message, completing a state update communication of the heartbeat message.

[0053] In practical applications, if the communication type established by the EGW control agent communication module is TCP protocol, and the power master station acts as the TCP server and the power equipment acts as the TCP client, then when a new power equipment is connected to the power grid, the power master station will automatically discover, configure, and connect to the power equipment via the TCP protocol. The power equipment, acting as the TCP server, initiates a TCP connection to the CPE acting as the agent for the power master station. The CPE then obtains the added power equipment information and sends it to the base station. The base station adds the power equipment information and forwards it to the EGW. The EGW receives the information about the newly added power equipment, adds the record, and establishes a TCP connection with the power master station, thus completing the TCP connection between the power equipment and the power master station.

[0054] If a power device goes offline, the power master station automatically identifies the device as offline. The power device disconnects from the CPE (Cybersecurity Equipment) acting as an agent for the power master station. At this time, the heartbeat message is interrupted, and the CPE obtains the deleted power device information and sends it to the power base station. The power base station deletes the power device information and forwards the deletion record to the EGW (Electronic Power Controller). After receiving the deletion record of the deleted power device information, the EGW disconnects from the power master station, thereby breaking the TCP connection between the offline power device and the power master station, completing the automatic identification of the power device being offline.

[0055] In practical applications, if manual configuration of power equipment by external personnel is required, when adding new power equipment, the power master station can act as a TCP server and the power equipment as a TCP client. First, the network administrator adds the power equipment information to the EGW. The EGW records the power equipment information and acts as a proxy for the power equipment as a TCP client to send a TCP connection request to the TCP server, the power master station, to establish a connection with the power master station. At the same time, the power equipment information is sent to the power base station, which then forwards it to the CPE. The CPE records the information of the newly added power equipment and acts as a proxy for the master station as a TCP server to receive TCP connection requests from the TCP client power equipment.

[0056] If power equipment needs to be removed, the network administrator will remove the power equipment in the EGW and act as an agent to disconnect the TCP connection between the EGW and the power master station. The EGW sends the information of the deleted power equipment to the power base station, which then forwards it to the CPE. The CPE deletes the information of the power equipment and acts as an agent to disconnect the TCP connection between the power master station and the power equipment.

[0057] In practical applications, external personnel manually configure the power equipment. When adding new power equipment, the power master station can act as a TCP client, and the power equipment as a TCP server. When adding a new power device, the network administrator adds the device's information to the EGW. Upon receiving this information, the EGW acts as a proxy for the power device, receiving TCP connection requests from the power master station as a TCP client. Simultaneously, the EGW sends the added power device information record to the power base station and establishes a device connection. The power base station forwards the added power device information record to the CPE and establishes a device connection with the CPE. The CPE records the new power device information and acts as a proxy for the master station, sending TCP connection requests to the corresponding power equipment, thus completing the TCP connection between the power master station and the power equipment.

[0058] If a device needs to be deleted, the network administrator first controls the EGW to delete the power device information. The EGW, acting as an agent for the power device, closes the TCP connection between itself and the power master station, sends the deleted power device information to the power base station, and closes the device connection with the power base station. The power base station forwards the deleted power device information to the CPE. After the CPE records the deleted power device information, the power base station also closes the device connection with the CPE. Based on the recorded deleted power device information, the CPE, acting as an agent for the power master station as a TCP client, closes the TCP connection with the power device, which is acting as a TCP server.

[0059] In practical applications, UDP communication can also be used between the power master station and the power equipment. If manual configuration is required to add power equipment, the network administrator first adds the new power equipment information to the EGW. After receiving the new power equipment information, the EGW creates a UDP socket on behalf of the power master station and sends it to the power base station. The power base station forwards the new power equipment information to the CPE. The CPE records the new power equipment information and then creates a UDP socket on behalf of the power master station, completing the UDP connection between the power master station and the power equipment.

[0060] If manual configuration is required to delete a power device, the network administrator first deletes the power device information from the EGW. After receiving the record of the power device deletion information, the EGW deletes the UDP SOCKET on behalf of the power master station and sends it to the power base station. The power base station forwards the power device deletion information to the CPE. After the CPE deletes the power device information, it deletes the UDP SOCKET on behalf of the power master station and disconnects the UDP connection between the power master station and the power device.

[0061] This embodiment of the system also supports offline configuration. When the power equipment has not yet been deployed, the network administrator can manually configure the EGW and synchronize the configuration information to the CPE. After detecting the connection of the power equipment, the CPE queries its own configuration list. If the newly added power equipment is in the configuration list (already configured), the CPE does not notify the EGW of the equipment information. If the newly added power equipment is not in the configuration list (not configured), the CPE needs to notify the EGW of the equipment information. In practical applications, the EGW can connect to multiple power master stations as needed, and the proxy communication module can also contain several CPEs to connect to several groups of power equipment, forming a power grid communication network. This is more suitable for scenarios where a large number of power equipment need to be separately and centrally managed for maintenance and monitoring.

Claims

1. A power grid IP link proxy communication system, characterized in that, This includes power equipment equipped with a data acquisition module; the power equipment establishes a network connection with the power master station through a proxy communication module; the proxy communication module includes a base station power gateway (EGW), which acts as an agent for the power equipment to establish a network connection with the power master station; the power base station accesses the EGW to perform communication protocol conversion; the power base station also connects to the device front-end node (CPE) via a wireless air interface transmission protocol; the CPE acts as an agent for the power master station to establish a network connection with the power equipment.

2. The power grid IP link proxy communication system according to claim 1, characterized in that, The data acquisition module collects real-time data and status information of power equipment and sends it to the power master station through the proxy communication module. The power master station collects real-time data and status information of power equipment, presents it to users in a visual format, and uses the data as a basis for power grid operation and maintenance decisions.

3. The power grid IP link proxy communication system according to claim 1, characterized in that, The power equipment and the power master station establish TCP or UDP communication through the proxy communication module. The EGW controls the communication type established by the proxy communication module and is responsible for the configuration and login of CPE devices, base station access, connection to the power master station, and transparent transmission and distribution of data.

4. The power grid IP link proxy communication system according to claim 1 or 3, characterized in that, When establishing TCP communication between power equipment and the power master station through the proxy communication module, the EGW is configured with the power master station as the TCP server and the power equipment as the TCP client; or the power master station is configured as the TCP client and the power equipment as the TCP server.

5. The power grid IP link proxy communication system according to claim 4, characterized in that, When the power station acts as a TCP server and the power equipment acts as a TCP client, the power equipment, acting as a TCP client, initiates a connection to the power station, which is proxied by the CPE and acts as a TCP server.

6. The power grid IP link proxy communication system according to claim 4, characterized in that, When the power master station acts as a TCP client and the power equipment acts as a TCP server, the EGW proxy initiates a connection between the power equipment (as a TCP client) and the power master station (as a TCP server).

7. The power grid IP link proxy communication system according to claim 1, characterized in that, EGW obtains the current offline or online status of power equipment through heartbeat messages with the power equipment; when the heartbeat message is disconnected, the connection of the power equipment is not deleted, but it is changed to an offline state.

8. A power grid IP link proxy communication method, applied to the power grid IP link proxy communication system according to any one of claims 1-7, characterized in that, When the communication type established by the EGW control agent communication module is TCP protocol, the following steps are performed when power equipment is added to or removed from the network: S1-1, The power master station acts as the TCP server, and the power equipment acts as the TCP client. The power equipment initiates a TCP connection to the CPE that acts as the proxy of the power master station. S1-2: The CPE obtains information about newly added or deleted power equipment and sends it to the power base station. The power base station performs protocol conversion and then sends it to the EGW. S1-3. After receiving information records of newly added power equipment from the power base station, the EGW establishes a connection with the power master station; after receiving information records of deleted power equipment from the EGW, the connection with the power master station is terminated.

9. The power grid IP link proxy communication method according to claim 8, characterized in that, When the power master station acts as a TCP client and the power equipment acts as a TCP server, and the power equipment is manually deleted, the following steps are performed: S2-1. The network administrator adds or deletes power equipment information records in the EGW. S2-2, The power base station forwards EGW information on newly added or deleted power equipment to the CPE; S2-3. Based on the information of newly added or deleted power equipment forwarded by the power base station, the CPE acts as an agent for the power master station to establish a TCP connection with the newly added power equipment or close a TCP connection with the deleted power equipment.

10. The power grid IP link proxy communication method according to claim 8, characterized in that, When the power master station and power equipment communicate using UDP, and power equipment is added or deleted manually, the following steps are performed: S3-1. The network administrator inputs new or deleted information records of power equipment into the EGW; S3-2. When the EGW receives information records of newly added power equipment, it creates a UDP SOCKET; when the EGW receives information records of deleted power equipment, it deletes the UDP SOCKET; finally, the information of newly added or deleted power equipment is forwarded to the CPE through the power base station. S3-3: When the CPE receives the information record of newly added power equipment, it adds the power equipment information and creates a UDP SOCKET. When the CPE receives the information record for deleting power equipment, it deletes the power equipment information and deletes the UDP SOCKET.

Images