Checking system and checking method for sulfur hexafluoride density relay

Abstract

The invention relates to a checking system and a checking method for a sulfur hexafluoride density relay. The checking system comprises an intelligent control and processing unit, a data acquisition unit, a data storage unit and an intelligent control output unit which are based on AVR singlechips, uses a micro control unit as the core, and is provided with hardware modules for man-machine interaction, AD sampling, data storage, temperature measurement, motor driving and the like. The checking method mainly comprises functional modules for density testing, humidity testing, parameter setting,data query and the like. The invention has a humanized man-machine interactive system and has the advantages of convenient customer use, high automation degree, good air tightness and function diversity, thereby filling up the gap in the relevant field.

Description

technical field [0001] The invention relates to a relay calibration system, in particular to a sulfur hexafluoride density relay calibration system and calibration method. The system is capable of SF 6 Density relays can be verified on-site and can be used for SF 6 The performance of the density relay is comprehensively evaluated to realize the inspection of the equipment, thereby improving the automation level and reliability of the power system, and effectively preventing the power system from being caused by SF 6 Disaster caused by density relay failure. The invention belongs to the technical field of signal processing and monitoring. Background technique [0002] With the development of technology and economy, SF 6 SF gas as arc extinguishing medium 6 Switches and fully sealed combined electrical appliances (GIS) have been widely used in power systems, and are gradually replacing the previous oil-rich, less-oil, and vacuum circuit breakers. It has the advantages of...

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Problems solved by technology

[0005] The present invention aims at the problems existing in the above-mentioned prior art, and after a large amount of exploration and research and test summary, provides a sulfur hexafluoride density relay verification system and verification method, adopts 8-bit high-grade microprocessor, and the SF 6 Density relays are checked on-site to accurately obtain their operating parameters. After relevant calculation and reasoning of operating parameters, the SF 6 Whether the density relay is working normally; use precise sensors to collect relevant measurement values, use advanced signal processing technology and algorithms to extract feature quantities, and combine system information to realize intelligent reasoning and fault diagnosis functions; Problems in Calibration of Sulfur Fluoride Density Relay

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