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Protocol conversion method of relay protection device application gateway on 10kV line

A relay protection device and protocol conversion technology, which is applied in the direction of electrical components, transmission systems, information technology support systems, etc., can solve the problem of inaccessibility of relay protection devices, improve flexibility and scalability, and shorten the cycle time. Inquiry time, the effect of meeting real-time requirements

Active Publication Date: 2021-03-16
NANJING UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a protocol conversion method for the relay protection device application gateway on a 10kV line to solve the problem that the relay protection device cannot be connected to the power SCADA system due to different communication protocols

Method used

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  • Protocol conversion method of relay protection device application gateway on 10kV line
  • Protocol conversion method of relay protection device application gateway on 10kV line
  • Protocol conversion method of relay protection device application gateway on 10kV line

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Embodiment

[0046] to combine image 3 Describe the process of uploading data by the relay protection device. The application gateway receives the relay protection upload data, judges whether the data frame is correct and complete according to the frame header, frame tail, frame length, and verification method; then performs protocol identification on the complete data frame. Read the corresponding uploaded device number according to the device number position, device number length, and device number encoding method in the custom protocol description information, and find the protocol number corresponding to the device number in the device information table. Then find the data frame type according to the command identification position. Then analyze the data area, and find the corresponding data items according to the one-to-one correspondence between the protocol, data frame, and starting position of the data and the protocol number, data frame number, and starting position in the custo...

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Abstract

The invention discloses a protocol conversion method of a relay protection device application gateway on a 10kV line. The protocol conversion method comprises the following steps: 1, configuring a protocol and equipment related information; 2, receiving data, and identifying a complete data frame; 3, identifying a protocol to which the data frame belongs and the type of the data frame; 4, matchingthe data frame with a corresponding protocol set, and if matching succeeds, reading a data value of the data frame and multiplying the data value by a coefficient to calculate a parameter actual value; 5, querying a protocol conversion set, and finding a target protocol number and a target data frame number; 6, searching for data items in the target protocol set, and converting the actual parameter value into a target protocol transmission value; 7, after conversion is finished, constructing a target data frame; and 8, sending the target data frame to an electric power SCADA or a corresponding relay protection device. According to the method, the flexibility and the expandability of the application gateway are improved.

Description

technical field [0001] The invention belongs to the communication field of electric switchgear, and in particular relates to a protocol conversion method for a relay protection device application gateway on a 10kV line. Background technique [0002] On 10kV distribution lines, due to the large number and wide distribution of relay protection devices, it is not suitable for wired communications such as optical fiber and power carrier, which have high cost and long construction period. At present, 10kVA relay protection devices usually use GPRS / 3G / 4G / 5G wireless communication methods, and custom protocols are usually used to adapt to wireless communication methods. Because the equipment is produced by different manufacturers, it is impossible to formulate a unified standard, so the customized communication protocols are also different. On the other hand, the power SCADA system uses the DL / T634.5104-2009 protocol to communicate with telecontrol equipment. Due to different com...

Claims

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Application Information

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IPC IPC(8): H04L29/06
CPCH04L69/08Y04S40/126
Inventor 聂凡朱颖朱岩
Owner NANJING UNIV OF SCI & TECH
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