Power distribution terminal three remote information automatic checking system

Abstract

This invention discloses an automatic verification system for remote sensing, remote control, and remote operation information of distribution terminals, comprising a distribution automation master station, a distribution automation equipment testing center, and distribution terminals to be verified. The distribution automation master station includes a master station front-end processor and a master station communication module. The distribution automation equipment testing center includes a distribution terminal remote sensing, remote control, and remote operation function verification instrument, a testing center communication module, and a communication monitoring module. The master station front-end processor is capable of establishing and exporting a remote sensing, remote control, and remote operation information model of the distribution terminal. The remote sensing, remote control, and remote operation function verification instrument is used to import the remote sensing, remote control, and remote operation information model of the distribution terminal, and to send remote adjustment information and output voltage and current state sequences to the distribution terminal based on the model. It also receives and parses the monitored communication information and compares it with the imported distribution terminal information model to verify the correctness of the model. This invention provides accurate verification and achieves fully automated testing.

Description

Technical Field

[0001] This invention belongs to the field of power automation technology, specifically relating to an automatic verification system for remote information of power distribution terminals. Background Technology

[0002] During the construction of distribution automation systems, a large number of distribution automation switches will be connected to the grid and put into operation, which also means that a large number of distribution terminals will be put into operation. The accuracy of the information transmitted by the distribution terminals to the distribution automation master station directly affects the accuracy of the master station's judgment of the line operating status and fault location. To ensure the consistency between the distribution terminal information model and the distribution automation master station information model, the verification of the distribution terminal information model is a very important task during the construction or renovation of distribution automation systems.

[0003] The traditional method for verifying the information model of a power distribution terminal is to simulate the input of a power distribution terminal under test by a relay protection tester. Then, the tester needs to communicate with the main station personnel through telephone or other means and verify whether the input points are correct. For example, when verifying the telemetry voltage, the verification steps are as follows: (1) Connect the voltage output terminal of the relay protection tester to the voltage acquisition input terminal of the power distribution terminal using a dedicated test line; (2) Power on the power distribution terminal and the relay protection tester normally; (3) Start the relay protection tester to output voltage signal; (4) Read the telemetry value sent by the power distribution terminal through the front-end machine of the power distribution automation main station and compare it with the voltage value output by the relay protection tester to calculate whether the voltage acquisition data deviation is within 0.5%.

[0004] The traditional verification method described above requires at least one person to perform the operation at the distribution automation testing center and at least one person to read the information at the distribution automation master station. Each information point requires a relay protection tester startup operation and information reading operation, as well as information transmission and comparison between the two parties. The verification process is time-consuming, inefficient, and involves too much human intervention. Furthermore, the lack of responsibility of the testers can affect the test quality.

[0005] In existing automated verification instrument solutions, a feedback communication method using the distribution automation master station's front-end unit is employed. This feedback communication method verifies the information by having the distribution terminal send information to the distribution automation master station, which then replies with a positive confirmation. Upon receiving this confirmation, the distribution terminal considers itself to have received the information from the master station. However, existing detection instruments have a drawback: if the information models of the distribution terminal and the distribution automation master station do not correspond, significant errors can occur. For example, the distribution terminal might show a short-circuit fault at information point 3 and a ground fault at information point 4; while the distribution automation master station might show a ground fault at information point 3 and a short-circuit fault at information point 4. If the detection instrument outputs a short-circuit fault current to the distribution terminal, and the terminal sends information to information point 3, the master station will display a ground fault at information point 3. Currently, there is no technical solution to this drawback. Therefore, this method suffers from inconsistencies between the information models of the distribution automation master station's front-end unit and the distribution terminal, leading to incorrect verification results. Summary of the Invention

[0006] The purpose of this invention is to provide an automatic verification system for remote information of power distribution terminals, so as to solve the problems of long verification process, low efficiency, excessive human intervention, and easy error in verification results mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An automatic verification system for remote sensing, remote control, and remote operation information of distribution terminals includes a distribution automation master station, a distribution automation equipment testing center, and distribution terminals to be verified; the distribution automation master station includes a distribution automation master station front-end processor and a master station communication module; the distribution automation equipment testing center includes a distribution terminal remote sensing, remote control, and remote operation function verification instrument, a testing center communication module, and a communication monitoring module;

[0009] The distribution automation master station front-end unit can establish and export the three-remote information model of the distribution terminal; the three-remote information model of the distribution terminal includes remote control information, remote signaling information, and telemetry information.

[0010] The main station communication module and the test center communication module are used to exchange communication information between the power distribution terminal and the power distribution automation main station; the communication information includes information sent by the power distribution terminal and information sent by the front-end unit of the power distribution automation main station.

[0011] The communication monitoring module is used to monitor the communication information transmitted between the power distribution terminal and the power distribution automation master station, and transmit the communication information to the power distribution terminal remote function verification instrument.

[0012] The power distribution terminal remote control function verification instrument is used to import the power distribution terminal remote control information model and to output the voltage and current state sequence of the power distribution terminal according to the power distribution terminal remote control information model; it is also used to receive and parse the monitored communication information and compare it with the imported power distribution terminal information model to verify the correctness of the power distribution terminal information model.

[0013] The power distribution terminal is used to generate the corresponding remote control information, remote signaling information, and remote measurement information in the power distribution terminal's three-remote information model and send them to the front-end machine of the power distribution automation master station through the test center's communication module.

[0014] Specifically, the master station communication module includes a communication encryption module and a wireless communication module; the wireless communication module is used for information transmission between the distribution automation master station front-end unit and the distribution terminal; the communication encryption module is used for encrypting and decrypting communication information.

[0015] Specifically, the test center communication module includes a communication encryption module and a wireless communication module; the wireless communication module is used for information transmission between the distribution automation master station front-end and the distribution terminal; the communication encryption module is used for encrypting and decrypting communication information.

[0016] Specifically, the power distribution terminal remote function verification instrument includes a communication interface, a voltage and current output interface, and a switch interface.

[0017] Specifically, the voltage and current output interface is connected to the voltage and current acquisition port of the power distribution terminal via a test lead; the switch interface is connected to the output interface of the power distribution terminal via a test lead; the communication interface is an Ethernet interface; and the communication interface is connected to the Ethernet interface of the power distribution terminal via a network cable.

[0018] In particular, the communication interface adopts the 104 protocol and can configure the logic protection function of the power distribution terminal.

[0019] Specifically, the distribution automation master station front-end unit can send a positive confirmation message back to the distribution terminal after receiving and verifying the remote signaling and telemetry information sent by the distribution terminal.

[0020] An automatic verification method for remote sensing, remote control, and remote operation information of distribution terminals is disclosed. The method utilizes an automatic verification system for remote sensing, remote control, and remote operation information of distribution terminals. This system includes a distribution automation master station, a distribution automation equipment testing center, and the distribution terminal to be verified. The distribution automation master station includes a master station front-end processor and a master station communication module. The distribution automation equipment testing center includes a distribution terminal remote sensing, remote control, and remote operation function verification instrument, a testing center communication module, and a communication monitoring module.

[0021] Includes the following steps:

[0022] S1. Based on the requirements and the signal model characteristics of the distribution terminal to be verified, the distribution automation master station front-end computer establishes a three-remote information model of the distribution terminal; the three-remote information model of the distribution terminal includes remote control information, remote signaling information, and telemetry information;

[0023] S2. Export the three-remote information model of the power distribution terminal from the front-end computer of the power distribution automation master station;

[0024] S3. The power distribution terminal remote control function tester is connected to the power distribution terminal; the power distribution terminal and the power distribution terminal remote control function tester are powered on normally;

[0025] S4. Import the distribution terminal information model of the distribution automation master station front-end machine exported in step S2 into the distribution terminal three-remote function verification instrument.

[0026] S5. The power distribution terminal remote control function verification instrument verifies the output voltage and current state sequence of the power distribution terminal based on the power distribution terminal remote control information model.

[0027] S6. After executing step S5, the power distribution terminal generates corresponding remote signaling, telemetry, and remote control information and transmits communication information to the power distribution automation master station front-end machine through the master station communication module and the test center communication module.

[0028] S7. The communication monitoring module monitors the communication information transmitted between the power distribution terminal and the power distribution automation master station, and transmits the communication information to the power distribution terminal remote function verification instrument.

[0029] S8. The power distribution terminal remote function verification instrument receives and parses the communication information it has been monitoring, and then compares it with the imported power distribution terminal information model to verify the correctness of the power distribution terminal information model.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] (1) The distribution automation master station front-end machine can establish a distribution terminal three-remote information model according to actual needs, which can adapt to distribution terminals produced by different manufacturers; the distribution automation master station establishes the distribution terminal information model and receives the information sent by the distribution terminal. The distribution terminal three-remote verification instrument can import the distribution terminal information model exported from the distribution automation master station and verify the information model through communication monitoring. This can achieve the purpose of automatic verification of the distribution terminal three-remote information. The verification is accurate, realizes the full automation of the distribution terminal three-remote information inspection, improves work efficiency, reduces human factors, and realizes the standardization of the distribution terminal three-remote information inspection.

[0032] (2) The power distribution terminal three-remote function verification instrument can import the power distribution terminal information model to ensure the consistency between the verified information model and the information model of the power distribution automation master station front-end machine;

[0033] (3) The power distribution terminal three-remote function verification instrument configures the power distribution terminal function through the 104 protocol, which can greatly reduce human intervention in the information verification process and realize a high degree of automation of the power distribution terminal three-remote function verification. Attached Figure Description

[0034] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0035] Figure 1 This is a schematic diagram of the working principle of the system of the present invention;

[0036] Figure 2 This is a flowchart of the automatic verification method for remote information of power distribution terminals according to the present invention. Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0038] like Figure 1 As shown, this embodiment provides an automatic verification system for remote sensing, remote control, and remote equipment information of distribution terminals, including a distribution automation master station, a distribution automation equipment testing center, and distribution terminals to be verified. The distribution automation master station includes a distribution automation master station front-end processor and a master station communication module. The distribution automation equipment testing center includes a distribution terminal remote sensing, remote control, and remote equipment function verifier, a testing center communication module, and a communication monitoring module.

[0039] The distribution automation master station front-end can establish and export the three-remote information model of the distribution terminal. The three-remote information model of the distribution terminal includes remote control information, remote signaling information, and telemetry information. After receiving the remote signaling and telemetry information sent by the distribution terminal and verifying that it is correct, the distribution automation master station front-end can reply with a positive confirmation message to the distribution terminal.

[0040] The master station communication module and the test center communication module are used for the exchange of communication information between the distribution terminals and the distribution automation master station. This communication information includes data sent from the distribution terminals and data sent from the distribution automation master station's front-end processor. The master station communication module includes a communication encryption module and a wireless communication module. The wireless communication module is used for information transmission between the distribution automation master station's front-end processor and the distribution terminals. The communication encryption module is used for encrypting and decrypting communication information. The test center communication module also includes a communication encryption module and a wireless communication module. The wireless communication module is used for information transmission between the distribution automation master station's front-end processor and the distribution terminals. The communication encryption module is used for encrypting and decrypting communication information.

[0041] The communication monitoring module is used to monitor the communication information transmitted between the power distribution terminal and the power distribution automation master station, and transmit the communication information to the power distribution terminal remote function verification instrument.

[0042] The power distribution terminal remote control function calibrator is used to import the power distribution terminal's remote control information model and to output the voltage and current state sequence of the power distribution terminal based on the model. It also receives and analyzes monitored communication information, compares it with the imported power distribution terminal information model, and verifies the model's correctness. The calibrator includes a communication interface, a voltage and current output interface, and a switch interface. The voltage and current output interface is connected to the voltage and current acquisition port of the power distribution terminal via test leads; the switch interface is connected to the output interface of the power distribution terminal via test leads. The communication interface is an Ethernet interface; it is connected to the power distribution terminal's Ethernet interface via a network cable. The communication interface uses the 104 protocol and can configure the power distribution terminal's logic protection functions.

[0043] The power distribution terminal is used to generate the corresponding remote control information, remote signaling information, and remote measurement information in the power distribution terminal's three-remote information model and send them to the front-end machine of the power distribution automation master station through the test center's communication module.

[0044] Figure 2 The flowchart for the three-remote function verification of the power distribution terminal of the present invention is shown below, with specific examples for comparison:

[0045] Includes the following steps:

[0046] S1. Based on the requirements and the signal model characteristics of the distribution terminal to be verified, the distribution automation master station front-end computer establishes a remote information model for the distribution terminal. The remote information model for the distribution terminal includes remote control information, remote signaling information, and telemetry information;

[0047] S2. Export the three-remote information model of the power distribution terminal from the front-end computer of the power distribution automation master station;

[0048] S3. Connect the remote control function tester for the power distribution terminal to the power distribution terminal. Connect the voltage and current output interface of the tester to the voltage and current acquisition interface of the power distribution terminal using test leads. Connect the output interface of the power distribution terminal to the switch interface of the tester using test leads. Connect the communication interface of the tester to the Ethernet interface of the power distribution terminal using a network cable. Power on the power distribution terminal and the remote control function tester for the power distribution terminal normally.

[0049] S4. Import the distribution terminal information model of the distribution automation master station front-end machine exported in step S2 into the distribution terminal three-remote function verification instrument.

[0050] S5. The power distribution terminal remote function calibrator, based on the power distribution terminal remote information model, configures the power distribution terminal mode through the 104 protocol and outputs the voltage and current state sequence.

[0051] S6. After executing step S5, the power distribution terminal generates corresponding remote signaling, telemetry, and remote control information and transmits communication information to the power distribution automation master station front-end machine through the master station communication module and the test center communication module.

[0052] S7. The communication monitoring module monitors the communication information transmitted between the power distribution terminal and the power distribution automation master station, and transmits the communication information to the power distribution terminal remote function verification instrument.

[0053] S8. The power distribution terminal remote function verification instrument receives and parses the communication information it has been monitoring, and then compares it with the imported power distribution terminal information model to verify the correctness of the power distribution terminal information model.

[0054] The distribution automation master station front-end unit of this invention can establish a distribution terminal remote information model and export the distribution terminal remote information model, import it into the distribution terminal remote function verification instrument, and ensure the consistency between the internal information model of the distribution terminal remote function verification instrument and the distribution terminal remote information model of the distribution automation master station front-end unit. It can solve the technical defect of existing automated verification instruments that cannot distinguish the order of information point numbers. Through the information model import, automatic output of voltage and current, communication information monitoring and automatic discrimination of the distribution terminal remote function verification instrument, and automatic configuration of the distribution terminal functions through remote adjustment function, the fully automatic remote function verification is completed.

[0055] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, the patent owner may make various modifications or alterations within the scope of the appended claims, as long as they do not exceed the protection scope described in the claims of the present invention, they shall be within the protection scope of the present invention.

Claims

1. An automatic verification system for remote sensing, remote control, and remote operation information of a power distribution terminal, comprising a power distribution automation master station, a power distribution automation equipment testing center, and a power distribution terminal to be verified; the power distribution automation master station includes a power distribution automation master station front-end processor and a master station communication module; the power distribution automation equipment testing center includes a power distribution terminal remote sensing, remote control, and remote operation function verification instrument, a testing center communication module, and a communication monitoring module; characterized in that: The distribution automation master station front-end unit can establish and export the three-remote information model of the distribution terminal; the three-remote information model of the distribution terminal includes remote control information, remote signaling information, and telemetry information. The master station communication module includes a communication encryption module and a wireless communication module; the wireless communication module is used for information transmission between the distribution automation master station front-end unit and the distribution terminal; the communication encryption module is used for encrypting and decrypting communication information; The test center communication module includes a communication encryption module and a wireless communication module; the wireless communication module is used for information transmission between the distribution automation master station front-end and the distribution terminal; the communication encryption module is used for encrypting and decrypting communication information; The main station communication module and the test center communication module are used to exchange communication information between the power distribution terminal and the power distribution automation main station; the communication information includes information sent by the power distribution terminal and information sent by the front-end unit of the power distribution automation main station. The communication monitoring module is used to monitor the communication information transmitted between the power distribution terminal and the power distribution automation master station, and transmit the communication information to the power distribution terminal remote function verification instrument. The power distribution terminal remote function verification instrument includes a communication interface, a voltage and current output interface, and a switch interface. The communication interface adopts the 104 protocol and can configure the logic protection function of the power distribution terminal; The power distribution terminal remote control function verification instrument is used to import the power distribution terminal remote control information model and to output the voltage and current state sequence of the power distribution terminal according to the power distribution terminal remote control information model; it is also used to receive and parse the monitored communication information and compare it with the imported power distribution terminal information model to verify the correctness of the power distribution terminal information model. The power distribution terminal receives the voltage and current state sequence output by the power distribution terminal three-remote function verification instrument, generates the corresponding remote control information, remote signaling information, and remote measurement information in the power distribution terminal three-remote information model, and sends them to the front-end machine of the power distribution automation master station through the test center communication module.

2. The automatic verification system for remote information of a power distribution terminal according to claim 1, characterized in that: The voltage and current output interface is connected to the voltage and current acquisition port of the power distribution terminal via a test lead; the switch interface is connected to the output interface of the power distribution terminal via a test lead; the communication interface is an Ethernet interface; the communication interface is connected to the Ethernet interface of the power distribution terminal via a network cable.

3. The automatic verification system for remote information of a power distribution terminal according to claim 1, characterized in that: The distribution automation master station front-end unit can receive remote signaling and telemetry information sent by the distribution terminal and, after verifying that it is correct, reply with a positive confirmation message to the distribution terminal.

4. A method for automatic verification of remote sensing, remote control, and remote control information of a power distribution terminal, using an automatic verification system for remote sensing, remote control, and remote control information of a power distribution terminal, the automatic verification system comprising a power distribution automation master station, a power distribution automation equipment testing center, and a power distribution terminal to be verified; the power distribution automation master station comprising a power distribution automation master station front-end processor and a master station communication module; the power distribution automation equipment testing center comprising a power distribution terminal remote sensing, remote control, and remote control function verification instrument, a testing center communication module, and a communication monitoring module; characterized in that: Includes the following steps: S1. Based on the requirements and the signal model characteristics of the distribution terminal to be verified, the distribution automation master station front-end computer establishes a three-remote information model of the distribution terminal; the three-remote information model of the distribution terminal includes remote control information, remote signaling information, and telemetry information; S2. Export the three-remote information model of the power distribution terminal from the front-end computer of the power distribution automation master station; S3. The power distribution terminal remote control function tester is connected to the power distribution terminal; the power distribution terminal and the power distribution terminal remote control function tester are powered on normally; S4. Import the distribution terminal information model of the distribution automation master station front-end machine exported in step S2 into the distribution terminal three-remote function verification instrument. S5. The power distribution terminal remote control function verification instrument verifies the output voltage and current state sequence of the power distribution terminal based on the power distribution terminal remote control information model. S6. After executing step S5, the power distribution terminal generates corresponding remote signaling, telemetry, and remote control information and transmits communication information to the power distribution automation master station front-end machine through the master station communication module and the test center communication module. S7. The communication monitoring module monitors the communication information transmitted between the power distribution terminal and the power distribution automation master station, and transmits the communication information to the power distribution terminal remote function verification instrument. S8. The power distribution terminal remote function verification instrument receives and parses the communication information it has been monitoring, and then compares it with the imported power distribution terminal information model to verify the correctness of the power distribution terminal information model.

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