A Partitioned Current Protection Scheme of Distribution Network with Inverter Interfaced Distributed Generator
Qiao Yida1, Wu Hongbin1, Wu Tonghua2, Li Xindong2
1. Anhui Province Key Laboratory of Renewable Energy Utilization and Energy Saving Hefei University of Technology Hefei 230009 China; 2. State Grid Electric Power Research Institute NARI Group Corporation Nanjing 211106 China
Abstract：In view of the problem that the large-scale inverter interfaced distributed generator has an impact on the reliability of traditional current protection when it is connected to the distribution network, it proposes a partitioned current protection scheme in this paper. It analyzed the fault characteristics of the distribution network with inverter interfaced distributed generator, and divided the distribution network lines into the upstream line area, the downstream line area, and the grid-connected line area of the inverter interfaced distributed generator. Aiming at the protection of the upstream line area, an adaptive direction current protection scheme is proposed. And the downstream line area adopts an adaptive current protection scheme based on the protection of local information. Then the grid-connected line area considers the use of current differential protection scheme. With the simulation of the example system, the effectiveness of the partitioned current protection scheme of distribution network with inverter interfaced distributed generator is verified.
乔一达, 吴红斌, 吴通华, 李新东. 含逆变型分布式电源的配电网分区域电流保护[J]. 电工技术学报, 2022, 37(zk1): 134-144.
Qiao Yida, Wu Hongbin, Wu Tonghua, Li Xindong. A Partitioned Current Protection Scheme of Distribution Network with Inverter Interfaced Distributed Generator. Transactions of China Electrotechnical Society, 2022, 37(zk1): 134-144.
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2022, Vol. 37 
