Checking system and checking method for sulfur hexafluoride density relay

A density relay, sulfur hexafluoride technology, applied in circuit breaker testing, instruments, scientific instruments, etc., can solve the problem of inability to verify sulfur hexafluoride density relays, etc., to achieve wide applicability, convenient connection, simple wiring Effect

Active Publication Date: 2011-01-05
FUSHUN POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY +1
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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

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  • Checking system and checking method for sulfur hexafluoride density relay
  • Checking system and checking method for sulfur hexafluoride density relay
  • Checking system and checking method for sulfur hexafluoride density relay

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Embodiment

[0040] The present invention is a kind of SF 6 The density relay calibration system is mainly composed of an AVR single-chip intelligent control and processing unit, a data acquisition unit, a data storage unit, and an intelligent control output unit. The calibration method consists of density test, humidity measurement, system time setting and data query.

[0041] The AVR single-chip intelligent control and processing unit selected the ATmega128 single-chip of ATMEL Company as the main controller, and the ATmega128 single-chip is the core of the entire control circuit. ATmega128 single-chip microcomputer is an 8-bit high-end microprocessor of ATMEL Company. It is based on AVR RISC structure and Harward system, and has the characteristics of high performance and low power consumption. ATmega128 MCU comes with 128K bytes of FLASH and 4K eeprom, and comes with SPI, TWI (I 2 C) and other interfaces, these resources bring great convenience to the system hardware, reduce the desi...

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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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Application Information

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IPC IPC(8): G01R31/327G01N9/00G01N7/10
Inventor 张小辉裴玉杰武英明刘昕李险峰韦晓东
Owner FUSHUN POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY
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