CAJ | 학술논문

气体绝缘开关设备(GIS)相对于常规敞开式开关设备具有运行可靠性高、环境适应能力强、耐地震能力强、防污闪能力强以及占地面积和占有空间小等众多优点,近年来大量应用于电力系统.但随着电网基础建设的快速发展,GIS用量急增,厂家生产能力接近饱和,产品质量难以保证,导致基建过程中出现了大量问题,尤其是内部绝缘击穿问题,严重影响电网运行的安全.分析一起220kV变电站基建过程中GIS交流耐压试验击穿故障,通过对设备解体检查发现,该次击穿故障是由于元器件处理工艺不完善、有遗留污水所致.表明对合资企业产品均应加强监制.
기체절연개관설비(GIS)상대우상규창개식개관설비구유운행가고성고、배경괄응능력강、내지진능력강、방오섬능력강이급점지면적화점유공간소등음다우점,근년래대량응용우전력계통.단수착전망기출건설적쾌속발전,GIS용량급증,엄가생산능력접근포화,산품질량난이보증,도치기건과정중출현료대량문제,우기시내부절연격천문제,엄중영향전망운행적안전.분석일기220kV변전참기건과정중GIS교류내압시험격천고장,통과대설비해체검사발현,해차격천고장시유우원기건처리공예불완선、유유류오수소치.표명대합자기업산품균응가강감제.
Gas-insulated metal-enclosure switchgears (GISs) have the advantages of higher reliability, environmental adaptability, earthquake-resistant ability, anti-pollution flashover capability and taking little area in comparison with conventional switchgears, and are used widely in power systems in recent years. But with the rapid development of infrastructure of power grids recently, GIS usage soared and the equipment manufacturer's production capacity reached their limitation. Thus it is difficult to guarantee the quality of products, which results in a great deal of problems in the infrastructure, in particular the issue of internal insulation breakdown, which impacts the safety of power grid seriously. The failure of withstanding voltage test on a GIS during construction of a 220 kV substation was analyzed and the reason of the failure was revealed by dissolution examination of the device, which was due to uncompleted processing technology leaving sewage behind. And the conclusion is that the supervision should be strengthened for products of the joint ventures.