中国电机工程学报2017，Vol.37Issue(9)：2525-2538,14.DOI:10.13334/j.0258-8013.pcsee.160614
低压有源配电网在线故障区间定位与识别方法
On-line Fault Section Location and Classification Technique for Low Voltage Active Distribution Network
摘要
Abstract
Fault location and classification is of great significance in comprehensive fault diagnosis of distribution network, which is helpful for local fault isolation and fast troubleshooting. The distributed connection of distributed generation (DG) in low voltage distribution network turns it to an active one. In low voltage active distribution network (LVADN), the change of fault characteristics brings a lot of trouble to the protection coordination and makes the previous fault location and classification methods inapplicable. To solve this problem, a novel on-line fault section location and classification method only using current measurement for LVADN was proposed in this paper. This method firstly divided the system into several two-terminal sections; secondly, it used the current phase-angle difference of each section for fast fault section judgment and fault phase selection; thirdly, in each fault section, fault phase selection result and the node zero-sequence current was utilized for fast fault classification; finally, the fault location and the corresponding fault type was obtained by collecting the fault discriminant information of all the sections in the system. The correctness and effectiveness of the proposed method has been verified by Matlab/Simulink Simulation, and it can be used in LVADN under various circumstances, such as three-phase balanced or unbalanced, grid-connected or isolated and arborescent or ring structure.关键词
主动配电网/故障定位/故障类型识别/分布式电源Key words
active distribution network/fault location/fault classification/distributed generation (DG)分类
信息技术与安全科学引用本文复制引用
牛耕,周龙,裴玮,齐智平..低压有源配电网在线故障区间定位与识别方法[J].中国电机工程学报,2017,37(9):2525-2538,14.基金项目
中国科学院知识创新工程重要方向项目(KGCX2- EW-329). The Key Project of the CAS Knowledge Innovation Program (KGCX2-EW-329). （KGCX2- EW-329）
