风电场汇集线路零序保护拒动事故分析  

Analysis of a Zero-sequence Protection Operation-failure Fault of the Collection Lines in a Wind Farm

作　　者：李润鑫[1] Li Runxin(Chengde Electric Power Supply Company, State Grid Jibei Power Co., Ltd., Chengde 067000, China)

机构地区：[1]国网冀北电力有限公司承德供电公司,河北承德067000

出　　处：《水电与新能源》2022年第3期49-53,共5页Hydropower and New Energy

摘　　要：风电场汇集线路接地故障发生较多,零序保护拒动时将会扩大停电范围,甚至引发大面积风电脱网事故。基于某电网风电场在2016年至2019年间汇集线路零序保护拒动事故分析,并以两起典型事故作简要说明,针对其暴露出的问题从工程施工验收、设备运行管理、人员培训等三方面提出防范措施,以避免类似事故的发生。Grounding faults of the collection lines occur frequently in wind farms.If the zero-sequence protection fails to operate,the power failure scope will be expanded and even a large area off-grid accident of the wind farm will be caused.The zero-sequence protection operation-failure accidents of the collection lines occurred from 2016 to 2019 in wind farms in a power grid are analyzed,discussed.Prevention measures are then proposed from three aspects of the construction acceptance,equipment operation maintenance and personnel training to avoid the occurrence of similar accidents.

关 键 词：风电场 汇集线路 零序保护 拒动事故 

分 类 号：TM614[电气工程—电力系统及自动化]