Front-end processor system in electrical power system and communication method based on front-end processor system

Abstract

The invention provides a front-end processor system in an electrical power system and a communication method based on the front-end processor system. A communication processing core module is controlled by an independent process of the system; a UDP (user datagram protocol) host machine communication module, a TCP (transmission control protocol) port communication module, a UDP port communication module and a serial port communication module are controlled by different threads of the system; the communication processing core module is connected with a backstage server by the UDP host machine communication module and the TCP port communication module respectively; the communication processing core module is connected with an RTU (remote terminal unit) by the TCP port communication module; the communication processing core module is connected with a protection management unit by the UDP port communication module; and the communication processing core module is connected with an acquisition module by the serial port communication module. According to the invention, the problems that the communication of the front-end processor is unstable, the communication reliability and the robustness of the front-end processor are weak, the front-end processor is difficult to maintain, and the front-end processor is complicated and varied in protocols can be solved.

Description

technical field [0001] The invention relates to the technical field of electric power and communication, and mainly refers to a data communication method and a front-end computer system in a substation automation system. Background technique [0002] The substation automation system is based on RTU and microcomputer protection devices, and incorporates the control, signal, measurement, billing and other circuits of the substation into the computer system to replace the traditional control protection screen, which can reduce the substation's floor space and equipment investment, and improve the secondary subsystem reliability. After more than ten years of development, it has reached a certain level. A large number of new automation technologies have been adopted in the transformation and construction of urban and rural power grids in my country, which has greatly improved the modernization level of power grid construction, enhanced the possibility of power transmission and di...

AI Technical Summary

Problems solved by technology

[0004] At present, the front-end processor generally has the following defects: (1) The communication in the front-end program is a part that is used a lot and is relatively easy to cause problems. problem, many special cases are difficult to handle

In the communication process, wrong or unstable data communication will bring judgment errors to users, unstable program operation, or random errors will cause interruption of data transmission, make the whole system fail, and cause irreparable losses ; (2) The remote maintenance of the front-end computer program is difficult; (3) There are many kinds of communication protocols in the power system, and they are often changing. When adding or modifying the protocol, it is often necessary to modify the core process and the protocol interpretation process, and The connection between the two processes is too close, which brings a lot of inconvenience to the modification of the program.

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