SF6 leakage monitoring system Fugu County Jinwantong magnesium industry application

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SF6 leakage monitoring system Fugu County Jinwanto

GB/T8905-1996 "Guidelines for Gas Management and Detection in sulfur hexafluoride Electrical Equipment" and DL 408— 1991 "Electrical Safety Work Regulations" (electrical parts of power plants and substations) and "Eighteen Major Anti-accident Measures of the State Grid Company" specifically stipulate that the distribution unit room equipped with SF6 equipment must ensure that the SF6 gas concentration is less than 1000ppm, in addition to the installation of strong ventilation devices, The oxygen meter and SF6 gas concentration detector must be installed.

Fugu Jinwantong Magnesium Industry Co., Ltd. was established in Fugu County, Yulin City, Shaanxi Province, the company mainly produces and sells ferrosilicon, magnesium metal, coal tar, etc., the establishment of electric power. 50MW self-owned power plant to form coal washing. Orchid charcoal Exhaust gas power generation. Ferrosilicon smelting -- a new industrial pattern of four-level cycle energy saving and emission reduction in metal magnesium production. The design substation of 110kV GIS switch room is an important part of the power electronic system, which has great influence on the safety and economic benefits of the system.

In order to meet the safety requirements of the power system, Weavers installed a set of SF6 leakage monitoring and alarm system for the 110kV GIS switch room with reference to the relevant industry safety regulations. Aiming at the problems of SF6 gas being heavier than air, easy to leak and gather, easy to cause hypoxia in the lower space, threat of leaking gas to workers, and danger to SF6 equipment safety after large leakage, the trouble of separate measurement of SF6 and oxygen is overcome, and the gas concentration state at each GIS equipment is monitored in a real-time and dynamic way. The organic combination of the entire system leaves the user with minimal maintenance steps and costs. The number of detection units can be flexibly expanded and reduced, and the addition and removal of GIS combined equipment on site will not affect the normal operation of the system.

SF6 leak monitoring alarm system voice function and large screen display interface make interaction with users more friendly. The massive storage data can realize almost unlimited storage query, which can facilitate further statistics and analysis of data. The timing control of the fan can save the waiting time before entering the GIS room and greatly improve the work efficiency. Changes in indoor gas concentration can trigger an automatic fan response. Adding probe unit is convenient and low cost. The communication with the computer in the monitoring room can realize remote monitoring and control, and the user does not need to personally go to the scene to view the data.

SF6 Leakage monitoring and alarm system is based on distributed CAN bus, which has set SF6 switch station environmental monitoring, SF6 density monitoring, SF6 micro-water monitoring, switch cabinet environmental monitoring and other platform, component and integrated complete solution. The system uses the international advanced DSP technology and sensing technology to ensure the high precision of data requirements, and the advanced CAN bus combined with network technology and database technology to ensure the real-time data monitoring. With the goal of providing integrated management ideas of human, machine, prevention and control and assisting decision-making, the establishment of a comprehensive management platform for the entire SF6 switch station is a necessary facility for the unmanned on-duty work program of modern power system.

The SF6 equipment and services provided by Wevers for the 110 kV transformer station of Jinwantong Magnesium have enhanced the safety and reliability of SF6 electrical equipment and played a key role in the power supply optimization of Jinwantong Magnesium.