摘要
常规的规模化分布式光伏并网配电网继电保护方法主要依赖于PSCAD/EMTDC暂态仿真软件生成继电保护模型,易受复杂元件误动作用的影响,导致故障区域判断异常。为解决这一问题,根据光伏并网布局分析规模化分布式光伏并网电流特点,设计了一种规模化光伏并网配电网继电保护方案,从而实现光伏并网配电网继电保护。通过实例分析证实,设计的配电网继电保护方法能有效判断故障区域,具有良好的保护效果和高度可靠性。因此,该方法有一定的应用价值,能在一定程度上降低光伏并网配电网运行风险。
Conventional relay protection methods for large-scale distributed photovoltaic grid-connected distribution networks mainly rely on PSCAD/EMTDC transient simulation software to generate relay protection models,which are easily affected by misoperation of complex components,resulting in abnormal judgment of fault areas.In order to solve this problem,this paper analyzes the characteristics of large-scale distributed photovoltaic grid-connected current according to the layout of photovoltaic grid-connected,and designs a relay protection scheme for large-scale photovoltaic grid-connected distribution network,thus realizing the relay protection of photovoltaic grid-connected distribution network.The example analysis shows that the designed relay protection method for distribution network can effectively judge the fault area,and has good protection effect and high reliability.Therefore,this method has certain application value and can reduce the operation risk of photovoltaic grid-connected distribution network to a certain extent.
作者
王凯
董樑
WANG Kai;DONG Liang(Guodian Nanrui Nanjing Control System Co.,Ltd.,Nanjing 211100,China)
出处
《通信电源技术》
2023年第22期85-87,共3页
Telecom Power Technology
关键词
规模化
分布式
光伏并网
配电网
继电保护
scale
distributed
photovoltaic grid connection
distribution network
relay protection
