The Adaptability Analysis of Single-phase Fault Location for Distribution Network with Generations
Huang Chaoyi1, 3, Cai Jinding1, Li Tianyou2, Chen Bin4, Zhang Gonglin4
1. College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350108; 2. State Grid Fujian Electric Co., Ltd, Fuzhou 350003; 3. Technology center of State Grid Fujian Electric Co., Ltd, Fuzhou 350007; 4. Electric Power Research Institute of State Grid Fujian, Fuzhou 350007
Abstract：In view of the distributed power grid connected distribution network are resulted topology changes, the existing analysis method of adaptive change. By comparing with contained DG and no DG in the small current grounding system’s characteristics about the transient current when happened single-phase grounding. Analysis of the original ground fault identification method in the distribution network structure of the new adaptive theoretically in theory, it is concluded that the addition of DG on the zero current impact is small, and had a greater influence of aerial mold current, the traditional positioning method based on aerial model current of reliability will be reduced, and the method of transient zero model component still use. Finally, based on the existing transient method lead to problems such as sampling synchronization and data full est., the result is using DA calculated the approximate entropy method, the simulation and actual failure data are verified the effectiveness of the algorithm.
2015, Vol. 16 
