SF6 high-voltage circuit breaker state intelligent monitoring and health management system

Abstract

The invention relates to an SF6 high-voltage circuit breaker intelligent monitoring and health management system which comprises hardware and software, wherein the hardware is divided into a lower computer and an upper computer; the lower computer hardware comprises an intelligent control and processing unit based on an FPGA and an ARM, a data acquisition unit, a data storage unit, an intelligent control output unit and a CAN bus communication unit; the upper computer hardware consists of a monitoring center server unit and a PCI 1680U board card; and the communication between the upper computer and the lower computer is realized by a CAN bus network. The software is also divided into a lower computer and an upper computer, wherein the lower computer software is in charge of driving the lower computer hardware to complete mechanical, electrical and insulating state data acquisition and feature extraction, realizes intelligent reasoning and intelligent control by combining system information, and drives the CAN bus communication unit to send the result obtained by processing into the upper computer; and the upper computer software is in charge of driving the PCI 1680U board card of the upper computer to complete communication, and realizes the man-machine interaction interface and intelligent monitoring information management. The system realizes the comprehensive monitoring for the SF6 high-voltage circuit breaker state and performance.

Description

A state intelligent monitoring and health management system for sulfur hexafluoride high voltage circuit breakers (1) Technical field: The invention relates to a state intelligent monitoring and health management system of a sulfur hexafluoride (SF6) high-voltage circuit breaker. The system can intelligently monitor the electrical state parameters, mechanical state parameters and insulation state parameters of SF6 high-voltage circuit breakers in real time, and can comprehensively evaluate the state and performance of SF6 high-voltage circuit breakers to realize equipment health management, thereby improving the automation level and reliability of power systems It can effectively prevent the disaster caused by the failure of SF6 high voltage circuit breaker body in the power system. Which involves data acquisition technology, signal processing technology, intelligent reasoning technology, advanced control technology and CAN bus communication technology. CAN bus communication...

AI Technical Summary

Problems solved by technology

The first method is an online monitoring device based on a single-chip microcomputer. This device only monitors some state parameters of the SF6 high-voltage circuit breaker, such as SF6 pressure and SF6 humidity or the current value of the closing and opening coils; when monitoring multiple state parameters, it is necessary to Install more monitoring equipment, occupy a large space, complex wiring, and the accuracy is not high, no intelligent reasoning and health management functions

The second method is an online monitoring system based on DSP. The processing speed of these chips is faster than that of a single-chip microcomputer, and the analysis parameters are accurate, but the monitoring quantity is still single. The host computer management system only stores a single state parameter, and cannot perform multi-parameter information fusion to realize intelligent diagnosis.

The third method is based on the industrial computer. This method makes up for the incomplete monitoring parameters of the first two methods to a certain extent. It can store most of the parameter information data, but it cannot perform multi-parameter information fusion to realize intelligent diagnosis and health. management, and occupy a large space

Images