摘要
正确的保护配置和整定方法是全功率变速抽水蓄能机组安全运行的关键。结合典型全功率变速抽水蓄能机组接线方式,在分析机组运行特性的基础上,提出了适用于各种运行状态的保护配置方法;分析了变频器对机组短路特性的影响;在此基础上,提出了将复压过流保护作为特殊区域的主保护,并给出了适用的保护整定计算方法。所提出的保护配置和整定方法在春厂坝变速抽水蓄能示范电站得到了应用。
Correct protection configuration and setting method is the key to safe operation of variable-speed pumped storage unit with full-size converter(FSC-VSPSU).Combined with the typical connection mode of FSC-VSPSU,and based on the analysis of unit operation characteristics,the protection configuration method suitable for various operating states is put forward.In view of the influence of frequency converter on short-circuit characteristics of unit,the overcurrent protection is proposed as the main protection of the special area.The applicable calculation method of protection setting is also given.The proposed protection configuration and setting method have been applied to FSC-VSPSU in Chunchang Dam Pumped Storage Power Station.
作者
周文越
史华勃
陈刚
ZHOU Wenyue;SHI Huabo;CHEN Gang(State Grid Sichuan Electric Power Research Institute,Chengdu 610041,Sichuan,China)
出处
《四川电力技术》
2023年第2期28-31,58,共5页
Sichuan Electric Power Technology
基金
国家重点研发计划项目“分布式光伏与梯级小水电互补联合发电技术研究及应用示范”(2018YFB0905200)。
关键词
全功率变速抽水蓄能机组
继电保护
整定计算
发电机保护
variable-speed pumped storage unit with full-size converter
relay protection
setting calculation
generator protection