Parameter configuration system of terminal of power system

Abstract

The invention relates to a parameter configuration system of a terminal of a power system, and belongs to the technical field of relay protection. Comprising a communication end and a terminal which are in communication connection, and the terminal is used for sending online state information containing a terminal identifier containing terminal line topology information and registration information representing an unregistered state after accessing a connection network of the communication end. Analyzing the information under the condition that the information containing the configuration parameters required by the terminal is received within the set time; the communication end is used for generating a topology set containing different elements according to a power system topology model, and the different elements contain topology information of different terminal lines; setting a device type model containing corresponding parameters for each element, wherein the model type is determined according to the terminal device type; and the sending module is also used for sending parameter information to the corresponding terminal according to the type model of the element under the condition that the element consistent with the line topology information obtained by the terminal identification in the received online state information exists in the topology set and the terminal is not registered.

Description

Technical Field

[0001] The invention relates to a parameter configuration system for a terminal of an electric power system, belonging to the technical field of relay protection. Background Art

[0002] In most cases, the power system topology in a region is complex. The power system contains a large number of terminal devices. Each terminal device under the power system needs to be configured with the parameters required by each terminal device, such as telesignaling data, telemetry data, etc. When the corresponding parameters of each terminal device change or the device fails, the relevant information of the device will be immediately sent to the main station of the power system so that the main station can detect the status of each terminal device.

[0003] When the power system needs to add, replace, or reduce equipment, especially when adding equipment, it is necessary to configure the parameters required by the equipment according to the corresponding topological position of the equipment. Usually, the parameters required by each device are configured manually. However, since the distribution locations of each device are relatively wide and not necessarily in the same place, and the parameters required by each terminal device are different, therefore, when the power system needs to add equipment, the method of manually configuring the parameters required by the equipment is difficult and complicated, resulting in low efficiency and error-prone configuration of the parameters required by the equipment. Summary of the invention

[0004] The purpose of the present invention is to provide a parameter configuration system for a terminal of an electric power system to solve the problem that when the electric power system needs to add equipment, the method of manually configuring the parameters required for the equipment is relatively difficult and complicated, resulting in low efficiency and easy errors in configuring the parameters required for the equipment.

[0005] In order to solve the above technical problems, the present invention provides a parameter configuration system for a terminal of an electric power system, the system comprising a communication terminal and a terminal connected in communication; The terminal is used to send online status information including the terminal identification of the terminal and registration information indicating an unregistered state after accessing the connection network of the communication terminal, and parse the information to complete the configuration of the parameters when receiving the information including the configuration parameters required by the terminal within a set time; the terminal identification includes the line topology information of the terminal in the power system; The communication terminal is used to generate a topology set containing different elements according to the power system topology model information, and the different elements respectively contain the line topology information of different terminals in the power system topology model in the power system; a device type model containing the configuration parameters required by the terminal is set for each element, and the type of the model is determined according to the device type of the terminal contained in the power system topology model information; the communication terminal is also used to send information containing the configuration parameters required by the terminal to the terminal corresponding to the element according to the device type model of the element when the line topology information in an element in the topology set is consistent with the line topology information obtained by the terminal identifier in the received online status information, and the online status information meets all set conditions; the set conditions include: the registration information in the online status information indicates an unregistered state.

[0006] Furthermore, the topology set also includes device types of terminals corresponding to different elements; the online status information also includes the device type of the terminal; the setting condition also includes: the device type of the terminal in the online status information is consistent with the device type of the terminal corresponding to the element.

[0007] Furthermore, the communication end is a terminal in the power system topology model or a communication device additionally provided outside the power system topology model.

[0008] Furthermore, the terminal is also used to repeatedly send online status information if no information containing configuration parameters required by the terminal is received within a set time after sending the online status information, until the number of times the online status information is sent reaches a set number and no information containing the parameters is received within a set time after each sending of the online status information.

[0009] Furthermore, the terminal is also used to set the will information including the online status information of the terminal after completing the installation and accessing the connection network of the communication terminal.

[0010] Furthermore, the parameter configuration system also includes an agent terminal, which is used to send the will information of the terminal to the communication terminal when the communication connection between the terminal and the communication device is disconnected.

[0011] Furthermore, the terminal is further configured to send online success indication information when receiving information including configuration parameters required by the terminal within a set time after sending the online status information.

[0012] Furthermore, the terminal is further configured to send online failure indication information when the number of times the online status information is sent reaches a set number and the parameter information is not received within a set time after each sending of the online status information.

[0013] Furthermore, the line topology information includes: a line number, a first sequence number and a second sequence number; The line number is determined in the following manner: the line number is obtained according to the serial number of the terminal in the power system topology model; The first serial number is determined in the following manner: if the terminal in the power system topology model is not located on a branch line, the first serial number is zero; if the terminal in the power system topology model is located on a branch line, the first serial number is obtained according to the order of the distance between the branch line where the terminal is located and the busbar; The second serial number is determined as follows: if the terminal in the power system topology model is not located on a branch line, the second serial number is obtained based on the distance between the terminal and the busbar; if the terminal in the power system topology model is located on a branch line, the second serial number is obtained based on the distance between the branch line where the terminal is located and the T connection node.

[0014] Furthermore, the communication connection between the communication end and the terminal is implemented through the MQTT protocol.

[0015] Beneficial effect: The present invention provides a new parameter configuration system for terminals of an electric power system. The parameter configuration system generates a topology set containing different elements according to the electric power system topology model information by using a communication terminal, wherein different elements respectively contain the line topology information of different terminals in the electric power system topology model in the electric power system, and the communication terminal sets a device type model containing the configuration parameters required by the terminal for each element (the user can configure the values ​​of the configuration parameters required by the terminal in each device type model to complete the configuration of the information of the configuration parameters required by each terminal); the parameter configuration system establishes a communication connection between the communication terminal and the terminal, and through the communication connection between the communication terminal and the terminal, sends the information of the required configuration parameters of each terminal to each terminal connected to the communication terminal, specifically, after the terminal is connected to the connection network of the communication terminal, it sends the online status information containing the terminal identification of the terminal and the registration information indicating the unregistered state, the online status information contains the terminal identification so that the communication device can accurately find and send the configuration parameters required by the terminal to the terminal according to the terminal identification, and the registration information indicating the unregistered state means that the information of the parameters of the terminal has not been configured; the line topology information of the communication terminal in an element in the topology set and the received online status information are used to obtain the information of the configuration parameters required by the terminal. When the line topology information obtained by the terminal identifier in the online status information is consistent, and the online status information satisfies all set conditions (the set conditions include that the registration information in the online status information indicates an unregistered state), the information containing the configuration parameters required by the terminal is sent to the terminal corresponding to the element according to the device type model of the element; wherein, by comparing the line topology information, the security of the information of the configuration parameters sent to the terminal equipment under the power system is guaranteed, and the configuration parameters for the terminal outside the power system are prevented, which affects the safety of the power system; the terminal will parse the information to complete the configuration of the information when receiving the information containing the configuration parameters required by the terminal within the set time after sending the online status information; when the power system adds equipment, it is only necessary for the communication end to generate a corresponding topology set according to the new power system topology model after the equipment is added, and set a corresponding device type model containing the configuration parameters for each element of the topology set, and then the communication end sends the information of the parameters of each terminal to the corresponding terminal to complete the configuration of the configuration parameters required by the terminal; the existing method of manually configuring the parameters of the equipment on-site when the power system needs to add equipment is avoided, which is inefficient and error-prone, greatly improves the efficiency of parameter configuration, and the accuracy of configuration is relatively higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of a parameter configuration system for a terminal of an electric power system in an embodiment of the parameter configuration system for a terminal of an electric power system of the present invention; Figure 2It is a flow chart of performing parameter configuration through the parameter configuration system of the terminal of the power system in an embodiment of the parameter configuration system of the terminal of the power system of the present invention; Figure 3 is an example diagram of MQTT communication connection between a communication terminal and a terminal in an embodiment of a parameter configuration system for a terminal of an electric power system of the present invention; Figure 4 is an example diagram of a power system topology model in an embodiment of a parameter configuration system for a terminal of a power system of the present invention; Figure 5 It is a flow chart of comparing online status information of a communication terminal in an embodiment of a parameter configuration system of a terminal of an electric power system of the present invention. DETAILED DESCRIPTION

[0017] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0018] Embodiment of parameter configuration system for terminal of power system This embodiment provides a technical solution for a parameter configuration system of a terminal of an electric power system. The system utilizes the communication terminal to complete the configuration of the information of the parameters required by each terminal in the electric power system according to the information of the electric power system topology model, and then sends the corresponding information of the configuration parameters required by each terminal to each terminal through the communication connection between the communication terminal and the terminal. Each terminal parses the information to complete the configuration of the parameters based on the received information containing the configuration parameters required by the terminal. The configuration system can avoid the existing situation that when the electric power system needs to add equipment, the method of manually configuring the parameters of the equipment on-site is inefficient and prone to errors, which greatly improves the efficiency of parameter configuration. The configuration system sets a comparison stage in the process of the communication terminal sending parameter information to the terminal. The corresponding configuration parameter information is sent to the terminal only when the terminal is not registered and the terminal belongs to the electric power system, which improves the accuracy of the configuration.

[0019] Specifically, the schematic diagram of the parameter configuration system of the terminal of the power system is as follows: Figure 1 As shown, the parameter configuration system of the terminal of the power system includes a communication terminal and a terminal connected in communication; the terminal is used to send online status information including the terminal identification of the terminal and registration information indicating an unregistered state after accessing the connection network of the communication terminal, and parse the information to complete the parameter configuration when receiving the information including the configuration parameters required by the terminal within a set time; the terminal identification includes the line topology information of the terminal in the power system; wherein the connection network of the communication terminal belongs to a network including the communication terminal and the terminal; The communication terminal is used to generate a topology set containing different elements according to the power system topology model information, and the different elements respectively contain the line topology information of different terminals in the power system topology model in the power system; a device type model containing the configuration parameters required by the terminal is set for each element, and the type of the device type model is determined according to the device type of the terminal contained in the power system topology model information; the communication terminal is also used to send information containing the configuration parameters required by the terminal to the terminal corresponding to the element according to the device type model of the element when the line topology information in an element in the topology set is consistent with the line topology information obtained by the terminal identifier in the received online status information, and the online status information meets all set conditions; the set conditions include: the registration information in the online status information indicates an unregistered state.

[0020] When equipment is added to the power system, the terminal parameter configuration system of the power system requires the communication device to generate a corresponding topology set based on the new power system topology model after the equipment is added, and set a corresponding device type model containing configuration parameters for each element of the topology set. Each communication device then sends the parameter information of each terminal to the corresponding terminal to complete the configuration of the configuration parameters required by the terminal. The system avoids the existing inefficient and error-prone method of manually configuring the parameters of the equipment on-site when the power system needs to add equipment, greatly improves the efficiency of parameter configuration, and the configuration accuracy is also relatively higher.

[0021] The flow chart of parameter configuration through the terminal parameter configuration system of the power system is as follows Figure 2 As shown, the parameter configuration system of the terminal of the power system is specifically described below: The terminal parameter configuration system of the power system includes a communication terminal and a terminal in communication connection; wherein one communication terminal can be connected to more than one terminal, and more than two terminals can be configured through one communication terminal or configured in groups through more than two communication terminals.

[0022] In this embodiment, the communication connection between the communication end (also called the communication device) and the terminal is implemented through the MQTT protocol. Figure 3 As shown, the MQTT protocol is used to realize the communication connection. The terminal and the communication end only need to subscribe to the same topic. The party sending the message only needs to publish the message in the corresponding topic, and the receiving end of the two only needs to subscribe to the corresponding topic to receive the message. The MQTT protocol has the advantages of lightweight and high efficiency, low power consumption, high reliability, scalability, real-time and security in establishing a communication connection. In other embodiments, other methods can also be used to establish a communication connection between the communication end and the terminal, such as establishing a communication connection between the communication end and the terminal through the http protocol.

[0023] The communication end is a terminal in the power system topology model or a communication device additionally provided outside the power system topology model.

[0024] The terminal is used to send online status information including the terminal identification of the terminal and registration information indicating an unregistered state after accessing the connection network of the communication terminal (for example, terminal identification: FeedL1BranchL0Num1; registration information: 0, in this embodiment, 0 indicates an unregistered state, specifically indicating that the terminal is in an unregistered state), and parse the information to complete the configuration of the parameters when receiving information including the configuration parameters required by the terminal within a set time; the terminal identification includes line topology information of the terminal in the power system; In this embodiment, the terminal is also used to send online success indication information when it receives information containing configuration parameters required by the terminal within a set time after sending the online status information; in this embodiment, sending the online success indication information is to control the online success indicator light; in other embodiments, the online success indication information may also take other forms.

[0025] In this embodiment, the terminal is also used for the case where the terminal does not receive the information containing the configuration parameters required by the terminal within a set time after sending the online status information (ie Figure 2 In the case of a waiting timeout in the process, the terminal repeatedly sends the online status information until the number of times the online status information is sent reaches the set number and the information of the configuration parameters required by the terminal is not received within the set time after each sending of the online status information (for example, the set number is 3, that is, when the online status information is sent 3 times, the information of the configuration parameters required by the terminal is not received within the set time after each sending, and the sending is stopped). In this embodiment, the terminal is also used to send online failure indication information when the number of times the online status information is sent reaches the set number and the information containing the configuration parameters required by the terminal is not received within the set time after each sending of the online status information; in this embodiment, sending the online failure indication information is to control the online failure indicator light to light up; in other embodiments, the online failure indication information may also take other forms.

[0026] In this embodiment, the terminal is also used to set the will information including the online status information of the terminal after completing the installation and accessing the connection network of the communication terminal. In this embodiment, the parameter configuration system also includes an agent terminal, which is used to send the will information of the terminal to the communication terminal when the communication connection between the terminal and the communication device is disconnected, so as to re-establish the communication connection between the terminal and the communication terminal and complete the parameter configuration of the terminal.

[0027] Among them, since this embodiment adopts the MQTT protocol to establish a communication connection between the communication end and the terminal, in this embodiment, the will information also includes the topic to which the will message is published, so that the communication end can receive the will information of the terminal through the corresponding topic.

[0028] The communication terminal is used to generate a topology set containing different elements according to the power system topology model information, and different elements respectively contain the line topology information of different terminals in the power system topology model in the power system; a device type model (generally divided into two models, Bus and Feeder) containing the configuration parameters required by the terminal is set for each element, and the type of the model is determined according to the device type of the terminal contained in the power system topology model information; wherein the user can configure the value of the configuration parameter required by the terminal in the device type model set corresponding to each element, that is, configure the configuration parameters required by the terminal; Among them, the example diagram of the power system topology model in this embodiment is as follows Figure 4As shown, three feeders are included, each of which has two terminals. Feeder 3 is also connected to branch 1, and branch 1 has a terminal. Taking FeedL1BranchL0Num1 in the power system topology model as an example, FeedL1BranchL0Num1 is a terminal identifier (also called a name) of a terminal in the power system. The terminal identifier of the terminal is configured through the host computer of the terminal. The method of configuring the terminal identifier of the terminal includes: first configuring the first information body of the terminal (device type and terminal serial number), specifically, selecting a terminal according to the terminal The corresponding line type (i.e., device type) is 0-bus (BusL), 1-feeder (FeedL), 2-communication equipment (communication terminal) (cummunicat), the device type of the terminal corresponding to FeedL1BranchL0Num1 is feeder, the serial number of this terminal in the power system topology model is 1, the first information body of this terminal is FeedL1, and the serial number of the terminal in the power system topology model ranges from 1 to 255; then configure the second information body of this terminal (branch information BranchL and the serial number in the second information body), specifically If the terminal is located on a branch line, the sequence number in the second information body of the terminal is obtained according to the distance sequence number of the branch line where the terminal is located from the main line. The distance sequence number of the branch line where the terminal is located from the main line ranges from 1 to 255. If the terminal is not located on a branch line, the sequence number in the second information body is 0. If the terminal corresponding to FeedL1BranchL0Num1 is not located on a branch line, the second information body is BranchL0. Finally, configure the third information body of the terminal (Num and the sequence number in the third information body). Specifically, If the terminal is located on a branch line, the sequence number in the third information body of the terminal is obtained according to the sequence number of the distance between the branch line where the terminal is located and the T connection. The sequence number of the distance between the branch line where the terminal is located and the T connection ranges from 1 to 255. If the terminal is not located on a branch line, the sequence number in the third information body is obtained according to the sequence number of the distance between the terminal and the bus. If the terminal corresponding to FeedL1BranchL0Num1 is not located on a branch line, the sequence number of the distance between the terminal and the bus is 1, and the third information body is Num1. Among them, the sequence of distance in this embodiment refers to the sequence from near to far, and in other embodiments, it can also be the sequence from far to near; the sequence numbers in the three information bodies constitute the line topology information in the terminal identification.

[0029] The line topology information includes: line number, first sequence number and second sequence number; The method for determining the line number is the same as the method for determining the serial number in the first information body, specifically: the line number is obtained according to the serial number of the terminal in the power system topology model; The method for determining the first serial number is the same as the method for determining the serial number in the second information body, specifically: if the terminal in the power system topology model is not located on a branch line, the first serial number is zero; if the terminal in the power system topology model is located on a branch line, the first serial number is obtained according to the order of the distance between the branch line where the terminal is located and the busbar; The method for determining the second serial number is consistent with the method for determining the serial number in the third information body, specifically: if the terminal in the power system topology model is not located on the branch line, the second serial number is obtained according to the order of the distance between the terminal and the busbar; if the terminal in the power system topology model is located on the branch line, the second serial number is obtained according to the order of the distance between the branch line where the terminal is located and the T connection node.

[0030] A topology set containing different elements is generated according to the power system topology model information. For example, according to FeedL1BranchL0Num1 in the power system topology model, the line number is 1, the first sequence number is 0, and the second sequence number is 1, which are respectively used as the values ​​of x, y, and z in the element (x, y, z) in the topology set. Then, the line topology information contained in the generated element is (1,0,1). For example, the topology set generated according to the power system topology model information is: (1,0,1), (1,0,2), (2,0,1), (2,0,2), (3,0,1), (3,0,2), (3,1,1); The flow chart of the communication end comparing the online status information is as follows Figure 5 As shown, the communication terminal is also used to obtain the line topology information (line topology information and terminal identification) from the line topology information in a certain element in the topology set and the terminal identification in the received online status information. Figure 5 For example, the line topology information (1,0,1) is obtained according to the terminal identifier FeedL1BranchL0Num1, and there happens to be an element with the line topology information (1,0,1) in the topology set generated above, and the online status information meets all the set conditions, then according to the device type model of the element, information containing the configuration parameters required by the terminal is sent to the terminal corresponding to the element; the set conditions include: the registration information in the online status information indicates an unregistered state (that is, the registration information is 0).

[0031] In this embodiment, the topology set also includes the device type of the terminal corresponding to different elements; the online status information also includes the device type of the terminal; the setting condition also includes: the device type of the terminal in the online status information is consistent with the device type of the terminal corresponding to the element; for example, the device type of the terminal whose line topology information in the online status information is (1,0,1) is FeedL, and the device type of the terminal corresponding to the element whose line topology information is (1,0,1) is also FeedL. It should be noted that the reason why the device type of the terminal is included as a parameter in the online status information together with the terminal identification of the terminal is because the terminal identification of the terminal basically includes line topology information, but only under ideal circumstances will it also include the device type of the terminal "FeedL" as in the example of the terminal identification "FeedL1BranchL0Num1" mentioned above. Under actual working conditions, the terminal identification usually does not include the device type of the terminal, and the device type of the terminal may change, and the terminal identification may not necessarily change accordingly according to the device type of the terminal in time. Even if the terminal identification includes the device type of the terminal under ideal circumstances, it may not be consistent with the current actual device type of the terminal. Therefore, in this embodiment, the communication end does not obtain the device type of the terminal by analyzing the terminal identification, but directly adds the device type of the terminal to the online status information at the terminal and sends it to the communication end, so that the communication end can directly parse the online status information to obtain the device type of the terminal.

[0032] Therefore, by adding the condition that the device type of the terminal in the online status information is consistent with the device type of the terminal corresponding to the element to the setting conditions, the communication end can receive the online status information containing the device type and terminal identifier of the terminal, judge that the line topology information of an element in the topology set is consistent with the line topology information obtained by the terminal identifier in the received online status information, and the registration information in the online status information indicates an unregistered state, and then compare the device type of the terminal corresponding to the element with the device type of the terminal in the online status information, that is, type check, to avoid the situation that the device type of the terminal corresponding to the element in the topology set obtained is inconsistent with the device type of the terminal in the online status information due to an error in the topology file or a change in the device type, resulting in an error in the configuration parameters, the situation that the user privately changes the device type, and the situation that the type of the device corresponding to the element in the topology set obtained due to a communication device failure leads to an error in the set device type model, thereby causing an error in the configured parameters, so that the accuracy of the parameter configuration is higher.

[0033] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, but do not constitute a limitation to the present invention.

Claims

1. A parameter configuration system for a terminal of an electric power system, characterized in that: A communication end and a terminal including a communication connection; The terminal is used to send online status information including the terminal identification of the terminal and registration information indicating an unregistered state after accessing the connection network of the communication terminal, and parse the information to complete the configuration of the parameters when receiving the information including the configuration parameters required by the terminal within a set time; the terminal identification includes the line topology information of the terminal in the power system; The communication terminal is used to generate a topology set containing different elements according to the power system topology model information, and the different elements respectively contain the line topology information of different terminals in the power system topology model in the power system; a device type model containing the configuration parameters required by the terminal is set for each element, and the type of the model is determined according to the device type of the terminal contained in the power system topology model information; the communication terminal is also used to send information containing the configuration parameters required by the terminal to the terminal corresponding to the element according to the device type model of the element when the line topology information in a certain element in the topology set is consistent with the line topology information obtained by the terminal identifier in the received online status information, and the online status information meets all set conditions; The setting condition includes: the registration information in the online status information indicates an unregistered state.

2. The parameter configuration system of a terminal of an electric power system according to claim 1, characterized in that: The topology set also contains the device types of the terminals corresponding to the different elements; The online status information also includes the device type of the terminal; The setting condition also includes: the device type of the terminal in the online status information is consistent with the device type of the terminal corresponding to the element.

3. The parameter configuration system of a terminal of an electric power system according to claim 1 or 2, characterized in that: The communication end is a terminal in the power system topology model or a communication device additionally provided outside the power system topology model.

4. The parameter configuration system for a terminal of an electric power system according to claim 1 or 2, characterized in that: The terminal is also used to repeatedly send the online status information if no information containing the configuration parameters required by the terminal is received within a set time after sending the online status information, until the number of times the online status information is sent reaches a set number and no information containing the parameters is received within a set time after each sending of the online status information.

5. The parameter configuration system of a terminal of an electric power system according to claim 4, characterized in that: The terminal is also used to set the will information including the online status information of the terminal after completing the installation and accessing the connection network of the communication terminal.

6. The parameter configuration system of a terminal of an electric power system according to claim 5, characterized in that: The parameter configuration system also includes an agent terminal, which is used to send the will information of the terminal to the communication terminal when the communication connection between the terminal and the communication device is disconnected.

7. The parameter configuration system of a terminal of an electric power system according to claim 1, characterized in that: The terminal is also used to send online success indication information when receiving information containing configuration parameters required by the terminal within a set time after sending the online status information.

8. The parameter configuration system for a terminal of an electric power system according to claim 7, characterized in that: The terminal is further configured to send online failure indication information when the number of times the online status information is sent reaches a set number and the parameter information is not received within a set time after each sending of the online status information.

9. The parameter configuration system of a terminal of an electric power system according to claim 1, characterized in that: The line topology information includes: a line number, a first sequence number and a second sequence number; The line number is determined in the following manner: the line number is obtained according to the serial number of the terminal in the power system topology model; The first serial number is determined in the following manner: if the terminal in the power system topology model is not located on a branch line, the first serial number is zero; if the terminal in the power system topology model is located on a branch line, the first serial number is obtained according to the order of the distance between the branch line where the terminal is located and the busbar; The second serial number is determined as follows: if the terminal in the power system topology model is not located on a branch line, the second serial number is obtained based on the distance between the terminal and the busbar; if the terminal in the power system topology model is located on a branch line, the second serial number is obtained based on the distance between the branch line where the terminal is located and the T connection node.

10. The parameter configuration system of a terminal of an electric power system according to claim 1, characterized in that: The communication connection between the communication end and the terminal is realized through the MQTT protocol.

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