电源技术2012，Vol.36Issue(8)：1188-1191,4.
基于故障分量含DG配电网方向保护新原理
New theory of direction protection for distribution network containing DG based on fault component
摘要
Abstract
DG combined into the grid will change the original structure of the distribution network from the radial network supplied by the single power to the complicated network supplied by a lot of power. Three-section current protection will be no longer applied. So, the modification of the distribution network protection was carried out. The downstream protection of DG was modified by changing its setting value, and the upstream protection of the DG was installed to the direction components to realize the direction protection. Based on the qualitative analysis of the influence of the DG combined into the network on the traditional current protection of distribution network, a new direction current protection was proposed on the basis of the positive sequence fault component. The phase difference of current positive sequence fault component on the protection installation area from the fault unsharpened to the fault happened was analyzed using fault component principle, the protection criterion of the positive and negative fault was gained, thereby the fault location was realized.关键词
故障分量/DG正向故障/反向故障/方向保护Key words
fault component/ DG/ positive fault/ negative fault/ direction protection分类
信息技术与安全科学引用本文复制引用
田书,刘颖,何金朋..基于故障分量含DG配电网方向保护新原理[J].电源技术,2012,36(8):1188-1191,4.基金项目
煤炭青年基金资助项目(117160) （117160）
河南理工大学第三批实验室开放基金(SKJA10082) （SKJA10082）
河南理工大学研究生创新基金资助项目 （）
