风电场集电系统接地保护及零序保护整定计算

Setting Calculation of Grounding Protection and Zero Sequence Protection for Wind Farm Collector System

为避免风电场集电线路和相关设备受接地故障的影响,需要合理配置保护整定,保证发生接地故障时保护动作的可靠性和灵敏性。以湖北省某风电场接地方式改造为例,探讨经消弧线圈接地改为经电阻接地方式后保护定值的整定计算。

To avoid the impact of grounding faults on the wind farm’s power collection lines and related equipment,it is necessary to configure the protection settings reasonably to ensure the reliability and sensitivity of the protection actions in the event of grounding faults.Taking the grounding modification of a wind farm in Hubei as an example,this paper explores the setting calculation of protection settings after changing from arc suppression coil grounding to resistance grounding.