基于分布式不平衡配电网双方向整定的自适应过流保护方案研究  

Research on Adaptive Overcurrent Protection Scheme Based on Dual Directional Rectification of Distributed Unbalanced Distribution Network

作　　者：陈天英 臧谦 赵宇皓 李铁成 郭少飞 张卫明 CHEN Tianying;ZANG Qian;ZHAO Yuhao;LI Tiecheng;GUO Shaofei;ZHANG Weiming(Electric Power Research Institute,Hebei Electric Power Co.,Ltd.,Shijiazhuang Hebei 050021,China)

机构地区：[1]国网河北省电力有限公司电力科学研究院,河北石家庄050021

出　　处：《电子器件》2024年第2期425-429,共5页Chinese Journal of Electron Devices

基　　金：国网河北省电力有限公司科技项目(kj2020-048);河北省重点研发计划项目(20314301D)。

摘　　要：随着传统化石能源的大量消耗与环境问题的日益严重,分布式发电(DG)技术快速发展,DG接入配电网也产生了新问题。由于重合器-熔断器的不协调,可能会降低网络可靠性。为了防止这种可靠性的降低,提出一种保护协调策略,展开理论分析,得出重合器快速和慢速操作修正设置以及熔断器系数的取值,以实现尽量少地使用熔断器的情况下满足保护目的,增加保护装置的协调范围。在IEEE 13个节点测试系统上模拟出现故障情况时应用该策略,重合器和熔断器能够配合处理故障,验证了策略的有效性。With the massive consumption of traditional fossil energy sources and the growing environmental problems,distributed genera⁃tion(DG)technology is developing rapidly.However,DG access to the distribution network has also created new problems,which may reduce network reliability due to uncoordination of recloser and fuse.In order to prevent this reliability degradation,a protection coordi⁃nation strategy is proposed,a theoretical analysis is developed,the recloser fast and slow operation correction settings and the fuse coeffi⁃cient values are derived to achieve the protection purpose with as few fuses as possible,and the coordination range of the protection de⁃vices is increased.The effectiveness of the strategy is verified by applying it to a simulated fault situation on an IEEE 13⁃node test sys⁃tem,where reclosers and fuses are able to cooperate to handle the fault.

关 键 词：分布式配电网 新型电力系统 过流整定保护 重合器-熔断器协调 

分 类 号：TM712[电气工程—电力系统及自动化]