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Application of SF6 concentration on-line monitorin

China Huadian Wujiang East Wind Hydropower Station in Guizhou is located in the provincial capital Guiyang88Km, is Wujiang hydropower base basin main stream cascade development firstoneGrade hydropower station.1995yearstwelveCompleted and put into operation in October, with a total installed capacity of869.5Ten thousand kilowatts. 

According to the national power safety regulations

GB/T8905-1996Guidelines for Gas Management and Detection in sulfur hexafluoride Electrical EquipmentDL 408—1991Special provisions of "Electrical Safety Working Regulations" (electrical part of power plants and substations) and "Eighteen Major Anti-accident Measures for Power Grids of the State Grid Company" are providedSF6The power distribution unit room of the equipment must be guaranteedSF6Gas concentration less than1000ppmIn addition to the installation of strong ventilation devices, oxygen meters and alarms must be installedSF6Gas concentration detection and alarm instrument.


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The substation was originally usedSF6Concentration on-line monitoring systemFrequent problems, crashes and false alarms, etc., power plant operation and maintenance department Tang workers and other leaders attach great importance to the removal and replacement of a new leakage monitoring system system. China Huadian Wujiang Dongfeng Hydropower Station in Guizhou province through bidding form, Weavers successfully won the bid3After the supply of the system, the company immediately sent technical personnel to carry out on-site survey, and developed the installation and construction plan, the installation equipment after commissioning, the normal operation, the main personnel in charge of the substation passed the acceptance.

 

With flexible composition and unified interface standard, the system can not only meet the current monitoring requirements of the power station, but also facilitate the futureSF6The number of units increases and decreases as well as the introduction of othersSF6Extended compatibility requirements when switching monitoring systems. The system can be connected with a remote device to realize remote remote alarm. After selecting the configuration of monitoring software or network application software, device drivers can be installed on the monitoring center platform and corresponding communication ports can be configured to realize the monitoring and control of field data on the monitoring center operation platform, which can further improve the efficiency and management level of maintenance work, and provide support for the realization of paperless office and unmanned on-duty of power station maintenance. 


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The SF6 concentration monitoring and alarm system successfully transformed by the power station has comprehensive monitoring of on-site SF6 concentration, oxygen content, temperature and humidity and other aspects, and monitors the gas concentration status of the GIS equipment in a real-time and dynamic way, providing real-time alarm functions and data storage and query functions. The system's simple operation interface is combined with liquid crystal dynamic display. The user has a very clear grasp of the entire switch room equipment environment. The dynamic environment of GIS switch room is monitored 24 hours a day, 365 days, and the monitoring data is uploaded to the monitoring platform, which creates a good safety environment for GIS switch room inspection personnel and plays a preventive role in ensuring the safe operation of the entire power station equipment.