摘要
分布式电源并入配电网之后,网络由原有的单辐射型转变为双端或多端型网络,系统潮流方向随之改变,可能引起继电保护误动、拒动。依据配电网继电保护原理,建立了含DG的配电网模型,利用Matlab/Simulink软件对重合闸动作情况进行仿真,验证了理论分析的正确性。
When distributed generation(DG) is connected to distribution network, original single radiation network turns to double or more and load flow direction is also changed. This may lead to mal-operation or refused operation of relay protection. On the basis of the principle of relay protection, a simulation model of distribution network with distributed generation is established. The reclosing action is analysed through Matlab/Simulink module, and the correctness of the theoretical analysis is verified.
引文
[1]马静,刘静.基于故障稳态分量的含DG配电网自适应方向电流保护方案[J].电力自动化设备,2018(1):1-9.
[2]高研,毕锐,杨为,等.分布式发电对配电网继电保护的影响[J].电网与清洁能源,2009(4):20-23.
[3]杨珮鑫,张沛超.分布式电源并网保护研究综述[J].电网技术,2016,40(6):1888-1895.
[4]叶琰.分布式电源对配电网继电保护的影响研究[D].北京:华北电力大学,2014.