提升低压变频器综合抗“晃电”能力的研究与技术实现  

Research and technical realization of improving the comprehensive anti sway ability of low voltage converter

作　　者：孙洪旭 张银东 SUN Hongxu;ZHANG Yindong(PetroChina Jinzhou Petrochemical Company,Jinzhou 121000,China)

机构地区：[1]中国石油天然气股份有限公司锦州石化分公司仪电车间,辽宁锦州121000

出　　处：《电气应用》2021年第12期93-97,共5页Electrotechnical Application

摘　　要：企业电力系统因内外部因素导致的电网电压波动,即"晃电"会造成低压变频器保护动作停机,变频器再次运行需要对变频器故障进行人工复位,又延长了恢复生产的时间。为减小"晃电"给企业造成的不利影响,论证一套综合的变频器抗"晃电"措施,保证变频器不间断运行。The power grid voltage fluctuation caused by internal and external factors in the enterprise power system,namely "power shaking", will cause the shutdown of the protection action of the low-voltage frequency converter.When the frequency converter runs again, it needs to manually reset the frequency converter fault, which also prolongs the time to resume production. In order to reduce the adverse impact of "power shaking"on enterprises,this paper demonstrates a set of comprehensive anti power shaking measures of frequency converter to ensure the uninterrupted operation of frequency converter.

关 键 词：变频器 微机综合保护器 失电跨越 

分 类 号：TM921.51[电气工程—电力电子与电力传动] TE683[石油与天然气工程—油气加工工程]