Remote protection information transmission system and method based on unvarnished transmission link

Abstract

The invention discloses a remote protection information transmission system and method based on an unvarnished transmission link, the system comprises a master station and a transformer substation, the transformer substation comprises a transparent agent module and a plurality of protection devices, the master station is connected with the transparent agent module, and the transparent agent module is connected with the plurality of protection devices; the transparent agent module is used for sending protocol first data to the corresponding protection device according to a protocol first data forwarding command sent by the master station; and after receiving the protocol second data and the communication link number thereof sent by the protection device, sending a protocol second data forwarding command to the master station. Through the arrangement of the transparent agent module, all communication processes with the protection device are realized by the remote master station end on the premise of not additionally increasing scheduling data network IP resources, and the collection of various data of the protection device is completed.

Description

Technical Field

[0001] The invention relates to a remote protection information transmission system and method based on a transparent transmission link, belonging to the technical field of power system automation. Background Art

[0002] In substations, power plants and new energy plants, it is necessary to deploy a protection information management system to monitor the information of protection devices in the station. The protection information management system generally includes a protection information substation in the station and a protection information master station on the dispatching side. The protection information substation needs to access the protection, recorder and other devices of the substation by communication. During the access process, the protection information substation needs to perform a lot of configuration work such as parameters and models. All these configuration work needs to be completed in the substation. With the increase in the number of substations, the power company has limited operation and maintenance personnel, and maintenance is often not timely and in place. Therefore, a technology is needed to move the configuration work to the master station side to achieve remote maintenance and improve operation and maintenance efficiency.

[0003] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgement or any form of suggestion that the information constitutes the prior art already known to ordinary technicians in this field. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a remote protection information transmission system and method based on a transparent transmission link. Through the setting of a transparent proxy module, all communication processes with the protection device can be realized by the remote master station without adding additional scheduling data network IP resources, thereby completing the collection of various types of data of the protection device.

[0005] To achieve the above object, the present invention is implemented by adopting the following technical solutions: In a first aspect, the present invention discloses a remote protection information transmission system based on a transparent transmission link, comprising a master station and a substation, wherein the substation comprises a transparent proxy module and a plurality of protection devices, wherein the master station is connected to the transparent proxy module, and the transparent proxy module is connected to the plurality of protection devices; The master station is used to send a first data forwarding command of the protocol to the transparent proxy module, and receive a second data forwarding command of the protocol sent by the transparent proxy module; wherein the first data forwarding command of the protocol includes the first data of the protocol and the communication link number of the corresponding protection device; the second data forwarding command of the protocol includes the second data of the protocol and the communication link number of the corresponding protection device; The transparent proxy module is used to send the first protocol data to the corresponding protection device according to the first protocol data forwarding command; after receiving the second protocol data and its communication link number sent by the protection device, send the second protocol data forwarding command to the main station.

[0006] Furthermore, the transparent proxy module includes: A TCP link establishment unit, used for establishing a TCP link with the master station after receiving a TCP link establishment signal from the master station; A first reply unit, used for sending a result of TCP link establishment to the master station; A protection device communication link establishing unit, used to establish a communication link with the protection device after receiving a command from the master station to establish a protection device communication link; A second reply unit, used for sending the result of establishing the communication link of the protection device to the master station; A protocol first data forwarding unit, configured to send the protocol first data to a corresponding protection device after receiving a protocol first data forwarding command from a master station; The second protocol data forwarding unit is used to send a second protocol data forwarding command to the master station after receiving the second protocol data and the communication link number of the protection device; A protection device communication link closing unit, used to close the communication link with the protection device after receiving a command from the master station to close the protection device communication link; The third reply unit is used to send the result of establishing the communication link of the closing device to the master station.

[0007] Furthermore, the transparent proxy module is deployed in the substation gateway machine, and uses the dispatching data network IP of the substation gateway machine to establish a TCP link with the master station.

[0008] Further, the command of establishing the protection device communication link of the master station includes the IP address, port number and link type of the protection device; The protection device communication link establishing unit is used to establish a communication link with the protection device according to the protection device communication link establishment command, and to perform communication link numbering on the communication link to obtain a communication link number corresponding to the communication link; The result of establishing the protection device communication link of the second reply unit includes a communication link number corresponding to the communication link.

[0009] Furthermore, the number of commands for establishing a protection device communication link issued by the master station is one or more, so as to establish communication links with different port numbers or different link types.

[0010] Furthermore, in response to the interruption of communication between the master station and the transparent proxy module, the transparent proxy module disconnects the communication links with all protection devices.

[0011] Furthermore, the main station and the transparent proxy module communicate with each other using a dedicated communication protocol.

[0012] Further, the master station includes: The first command unit is used to send a TCP connection establishment signal to the transparent proxy module; A first receiving unit, used for receiving the result of TCP link establishment of the transparent proxy module; A second command unit, used for sending a command to establish a protection device communication link to the transparent proxy module; A second receiving unit, used to receive the result of establishing the communication link of the protection device of the transparent proxy module; A third command unit, used for sending a first data forwarding command to the transparent proxy module; A third receiving unit, used for receiving a second data forwarding command specified by the transparent proxy module; A fourth command unit, used for sending a command to close the communication link of the protection device to the transparent proxy module; The fourth receiving unit is used to receive the result of establishing the communication link of the closing device of the transparent proxy module.

[0013] In a second aspect, the present invention discloses a remote protection information transmission method based on a transparent transmission link, which is applicable to the transparent proxy module described in the first aspect, and comprises the following steps: Sending the protocol first data to the corresponding protection device according to the protocol first data forwarding command; After receiving the second protocol data and the communication link number sent by the protection device, a second protocol data forwarding command is sent to the master station; The first protocol data forwarding command includes the first protocol data and the communication link number of the corresponding protection device; the second protocol data forwarding command includes the second protocol data and the communication link number of the corresponding protection device.

[0014] In a third aspect, the present invention discloses a remote protection information transmission method based on a transparent transmission link, which is applicable to the master station described in the first aspect, and comprises the following steps: Sending a first data forwarding command to the transparent proxy module; Receiving the second data forwarding command sent by the transparent proxy module; The first protocol data forwarding command includes the first protocol data and the communication link number of the corresponding protection device; the second protocol data forwarding command includes the second protocol data and the communication link number of the corresponding protection device.

[0015] Compared with the prior art, the present invention has the following beneficial effects: Through the setting of a transparent proxy module, the present invention realizes all communication processes with the protection device by the remote master station without adding additional IP resources of the scheduling data network, completes the collection of various data of the protection device, and achieves the effect of "directly" accessing the protection device in the station. The configuration work is moved to the master station side, remote maintenance is realized, and operation and maintenance efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a flow chart of a remote protection information transmission method based on a transparent transmission link; Figure 2 It is a structural diagram of a remote protection information transmission system based on a transparent transmission link. Implementation

[0017] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention. Example 1

[0018] This embodiment 1 provides a remote protection information transmission system based on a transparent transmission link, including a master station and a substation, the substation includes a transparent proxy module and multiple protection devices, the master station is connected to the transparent proxy module, and the transparent proxy module is connected to the multiple protection devices; The master station is used to send a first data forwarding command of the protocol to the transparent proxy module, and receive a second data forwarding command of the protocol sent by the transparent proxy module; wherein the first data forwarding command of the protocol includes the first data of the protocol and the communication link number of the corresponding protection device; the second data forwarding command of the protocol includes the second data of the protocol and the communication link number of the corresponding protection device; The transparent proxy module is used to send the first protocol data to the corresponding protection device according to the first protocol data forwarding command; after receiving the second protocol data and its communication link number sent by the protection device, send the second protocol data forwarding command to the main station.

[0019] The technical concept of the present invention is: through the setting of a transparent proxy module, without adding additional IP resources of the scheduling data network, the remote master station realizes all communication processes with the protection device, completes the collection of various data of the protection device, and achieves the effect of "directly" accessing the protection device in the station, moving the configuration work to the master station side, realizing remote maintenance, and improving operation and maintenance efficiency.

[0020] The TCP link establishment unit is used to establish a TCP link with the master station after receiving a TCP link establishment signal from the master station; A first reply unit, used for sending a result of TCP link establishment to the master station; A protection device communication link establishing unit, used to establish a communication link with the protection device after receiving a command from the master station to establish a protection device communication link; A second reply unit, used for sending the result of establishing the communication link of the protection device to the master station; A protocol first data forwarding unit, configured to send the protocol first data to a corresponding protection device after receiving a protocol first data forwarding command from a master station; The second protocol data forwarding unit is used to send a second protocol data forwarding command to the master station after receiving the second protocol data and the communication link number of the protection device; A protection device communication link closing unit, used to close the communication link with the protection device after receiving a command from the master station to close the protection device communication link; The third reply unit is used to send the result of establishing the communication link of the closing device to the master station.

[0021] The main site includes: The first command unit is used to send a TCP connection establishment signal to the transparent proxy module; A first receiving unit, used for receiving the result of TCP link establishment of the transparent proxy module; A second command unit, used for sending a command to establish a protection device communication link to the transparent proxy module; A second receiving unit, used to receive the result of establishing the communication link of the protection device of the transparent proxy module; A third command unit, used for sending a first data forwarding command to the transparent proxy module; A third receiving unit, used for receiving a second data forwarding command specified by the transparent proxy module; A fourth command unit, used for sending a command to close the communication link of the protection device to the transparent proxy module; The fourth receiving unit is used to receive the result of establishing the communication link of the closing device of the transparent proxy module.

[0022] like Figure 1 and Figure 2 As shown, the specific working principle is as follows: S01: Establish a communication link.

[0023] The embodiment of the present invention relates to a remote master station, a transparent proxy module and a protection device of a substation. A transparent proxy module is deployed in a substation gateway machine, and a TCP link is established with the master station using the dispatching data network IP of the substation gateway machine.

[0024] The remote master station has the access function of various protection protocols. When a new substation needs to be connected, first complete all the configuration work at the remote master station according to the substation protection device situation, including the network IP address of each protection, the communication protocol used, etc.

[0025] It should be noted that the master station and the transparent proxy module communicate using a dedicated communication protocol, which is a private protocol specially customized to meet the functional requirements of the master station and the transparent proxy module. The protocol between the transparent proxy module and the protection device includes a standard protocol or a private protocol of the protection manufacturer.

[0026] After the remote master station configuration is completed, Figure 1 In S01, the remote master station starts the process of establishing a communication link. The remote master station first establishes a TCP link with the transparent proxy module of the substation gateway machine, and then establishes a protection device communication link, as follows: (1) The master station sends a signal to establish a TCP connection to the transparent proxy module. After receiving the signal from the master station to establish a TCP connection, the transparent proxy module establishes a TCP connection with the master station and then sends the result of the TCP connection establishment to the master station.

[0027] (2) After the TCP link is established, based on the needs of the protection communication protocol, the master station sends one or more commands to establish a protection device communication link to establish communication links with different port numbers or different link types.

[0028] The command for establishing a communication link with the protection device includes the IP address, port number and link type of the protection device; the transparent proxy module establishes a communication link with the protection device based on the above information, and performs a communication link number on the communication link to obtain a communication link number corresponding to the communication link; then the result of establishing the communication link with the protection device is sent to the main station, wherein the result of establishing the communication link with the protection device includes the communication link number corresponding to the communication link.

[0029] S02: Transparent transmission of data.

[0030] like Figure 1 In S02, after the communication link between the remote master station and the transparent proxy module is established, the transparent data transmission process is started.

[0031] The remote master station organizes the communication message according to the communication protocol of the protection, and sends the first data forwarding command of the protocol according to the dedicated communication protocol. The transparent proxy module receives the first data forwarding command of the protocol and forwards the first data of the protocol to the corresponding protection device. Similarly, after the transparent proxy module receives the second data of the protocol of the protection device, it organizes the second data forwarding command of the protocol and sends it to the remote master station. Through the transit agent of the transparent proxy module, two-way communication between the remote master station and the protection can be realized.

[0032] It should be noted that the protocol first data forwarding command sent by the remote master station includes the protocol first data and the communication link number of the corresponding protection device. The transparent proxy module finds the corresponding protected communication link according to the "communication link number" in the protocol first data forwarding command, and forwards the protocol first data to the corresponding protection device through the communication link.

[0033] After receiving the second protocol data and the communication link number sent by the protection device, the transparent proxy module organizes the second protocol data forwarding command and sends it to the main station. The second protocol data is data organized according to the protocol of the protection device, and the protocol used by the protection device includes a standard protocol or a private protocol of the protection manufacturer.

[0034] S03: Close the communication link.

[0035] like Figure 1 In S03, the remote master station can initiate the process of closing the communication link as needed.

[0036] When the remote master station needs to close the communication with a protection device, it sends a command to close the protection device communication link to the transparent proxy module. The transparent proxy module disconnects the communication link with the protection device and then sends the result of establishing the communication link of the closed device to the master station.

[0037] It should be noted that, in response to the interruption of communication between the master station and the transparent proxy module, the transparent proxy module disconnects the communication links with all protection devices.

[0038] Through the above embodiments, it is possible to achieve Figure 2 The transparent transmission effect shown in the figure shows that the substation gateway transparent proxy module has only one physical link with the remote master station, and the substation gateway transparent proxy module establishes an independent physical link with each protection. Through the transparent proxy module, all the physical link messages of the protection are mapped to the physical link between the same transparent proxy module and the remote master station, so that the remote master station can "directly" access the protection device without being restricted by the protection protocol. Example 2

[0039] This embodiment 2 provides a remote protection information transmission method based on a transparent transmission link, which is applicable to the transparent proxy module of embodiment 1 and includes the following steps: Sending the first data of the protocol to the corresponding protection device according to the first data forwarding command of the protocol; After receiving the protocol second data and the communication link number sent by the protection device, a protocol second data forwarding command is sent to the master station; The first protocol data forwarding command includes the first protocol data and the communication link number of the corresponding protection device; the second protocol data forwarding command includes the second protocol data and the communication link number of the corresponding protection device. Example 3

[0040] This embodiment 3 provides a remote protection information transmission method based on a transparent transmission link, which is applicable to the master station of embodiment 1, and includes the following steps: Sending a first data forwarding command to the transparent proxy module; Receiving the second data forwarding command sent by the transparent proxy module; The first protocol data forwarding command includes the first protocol data and the communication link number of the corresponding protection device; the second protocol data forwarding command includes the second protocol data and the communication link number of the corresponding protection device.

[0041] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0042] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0043] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0044] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A remote protection information transmission system based on a transparent transmission link, characterized in that: It includes a master station and a transformer substation, wherein the transformer substation includes a transparent proxy module and a plurality of protection devices, the master station is connected to the transparent proxy module, and the transparent proxy module is connected to the plurality of protection devices; The master station is used to send a first data forwarding command of the protocol to the transparent proxy module, and receive a second data forwarding command of the protocol sent by the transparent proxy module; wherein the first data forwarding command of the protocol includes the first data of the protocol and the communication link number of the corresponding protection device; the second data forwarding command of the protocol includes the second data of the protocol and the communication link number of the corresponding protection device; The transparent proxy module is used to send the first protocol data to the corresponding protection device according to the first protocol data forwarding command; after receiving the second protocol data and its communication link number sent by the protection device, send the second protocol data forwarding command to the main station.

2. The remote protection information transmission system based on transparent transmission link according to claim 1 is characterized in that: The transparent proxy module includes: A TCP link establishment unit, used for establishing a TCP link with the master station after receiving a TCP link establishment signal from the master station; A first reply unit, used for sending a result of TCP link establishment to the master station; A protection device communication link establishing unit, used to establish a communication link with the protection device after receiving a command from the master station to establish a protection device communication link; A second reply unit, used for sending the result of establishing the communication link of the protection device to the master station; A protocol first data forwarding unit, configured to send the protocol first data to a corresponding protection device after receiving a protocol first data forwarding command from a master station; The second protocol data forwarding unit is used to send a second protocol data forwarding command to the master station after receiving the second protocol data and the communication link number of the protection device; A protection device communication link closing unit, used to close the communication link with the protection device after receiving a command from the master station to close the protection device communication link; The third reply unit is used to send the result of establishing the communication link of the closing device to the master station.

3. The remote protection information transmission system based on transparent transmission link according to claim 2 is characterized in that: The transparent proxy module is deployed in the substation gateway machine, and uses the dispatching data network IP of the substation gateway machine to establish a TCP link with the main station.

4. The remote protection information transmission system based on transparent transmission link according to claim 2 is characterized in that: The command of establishing the protection device communication link of the master station includes the IP address, port number and link type of the protection device; The protection device communication link establishing unit is used to establish a communication link with the protection device according to the protection device communication link establishment command, and to perform communication link numbering on the communication link to obtain a communication link number corresponding to the communication link; The result of establishing the protection device communication link of the second reply unit includes a communication link number corresponding to the communication link.

5. The remote protection information transmission system based on transparent transmission link according to claim 4 is characterized in that: The number of the commands for establishing the protection device communication link issued by the master station is one or more, so as to establish communication links with different port numbers or different link types.

6. The remote protection information transmission system based on transparent transmission link according to claim 2 is characterized in that: In response to the interruption of communication between the master station and the transparent proxy module, the transparent proxy module disconnects the communication links with all protection devices.

7. The remote protection information transmission system based on transparent transmission link according to claim 1 is characterized in that: The main station and the transparent proxy module communicate with each other using a dedicated communication protocol.

8. The remote protection information transmission system based on transparent transmission link according to claim 1 is characterized in that: The master station comprises: The first command unit is used to send a TCP connection establishment signal to the transparent proxy module; A first receiving unit, used for receiving the result of TCP link establishment of the transparent proxy module; A second command unit, used for sending a command to establish a protection device communication link to the transparent proxy module; A second receiving unit, used to receive the result of establishing the communication link of the protection device of the transparent proxy module; A third command unit, used for sending a first data forwarding command to the transparent proxy module; A third receiving unit, used for receiving a second data forwarding command specified by the transparent proxy module; A fourth command unit, used for sending a command to close the communication link of the protection device to the transparent proxy module; The fourth receiving unit is used to receive the result of establishing the communication link of the closing device of the transparent proxy module.

9. A remote protection information transmission method based on a transparent transmission link, applicable to the transparent proxy module according to any one of claims 1 to 8, characterized in that: The steps include: Sending the protocol first data to the corresponding protection device according to the protocol first data forwarding command; After receiving the second protocol data and the communication link number sent by the protection device, a second protocol data forwarding command is sent to the master station; The first protocol data forwarding command includes the first protocol data and the communication link number of the corresponding protection device; the second protocol data forwarding command includes the second protocol data and the communication link number of the corresponding protection device.

10. A remote protection information transmission method based on a transparent transmission link, applicable to the master station according to any one of claims 1 to 8, characterized in that: The steps include: Sending a first data forwarding command to the transparent proxy module; Receiving the second data forwarding command sent by the transparent proxy module; The first protocol data forwarding command includes the first protocol data and the communication link number of the corresponding protection device; the second protocol data forwarding command includes the second protocol data and the communication link number of the corresponding protection device.

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