分布式电源对配网继电保护的影响  

Influence of distributed generation on relay protection of distributed network

作　　者：曹泽兴[1] 卢志刚[1] 刘雪茹[1] 

机构地区：[1]贵州大学电气工程学院,贵州贵阳550000

出　　处：《电源技术》2013年第4期657-658,663,共3页Chinese Journal of Power Sources

摘　　要：介绍了分布式电源的发展概况、现有配电网络的结构及保护的配置方案、不同类型分布式电源提供短路电流的能力,以10 kV馈线保护为例,通过在配网不同位置加入DG,分析加入分布式电源之后对原有配电网电流保护的影响,包括对原保护灵敏性、选择性都会造成严重干扰,造成本线路保护拒动,非故障线路保护误动。并论述了DG对自动重合闸的影响,及对熔断器之间配合的影响,为并入DG后的配电网继电保护算法提供了一定的理论依据。The current development of distributed generation, the structure and protection configuration of existing distribution network, and the fault current insert of different kinds of DG was introduced. Taking the 10 kV network as an example, through the distribution network in different positions to join DG, the influence of the join of distributed generation on the existing protection of distribution network was analyzed, which included the serious interference to the sensitivity and selectivity of the original protection, the refusal of line protection, the action error of non-fault line protection. The influence of DG on automatic reclosing, and the effect between fuses was discussed, to some extent, providing theoretical basis for merging into DG relay protection algorithm.

关 键 词：分布式电源 配电网 继电保护 自动重合闸 熔断器 

分 类 号：TM77[电气工程—电力系统及自动化]