电工技术学报2017，Vol.32Issue(3)：65-73,9.
考虑风力发电的配电网弱馈线路自适应电流保护
An Adaptive Current Protection for Weak-Infeed Distribution Lines with Wind Generation
摘要
Abstract
With the connection of wind generators to the distribution network,the load flow and the characteristics of the fault currents of the distribution lines have been changed.Due to the introduction of the chopper circuits after faults,wind generators' positive and negative sequence impedances are not equal any more,which leads to the loss of the foundation of the relays' setting principles.In this paper,the characteristics of the phase-to-phase fault and three-phase fault at different locations of the weak-infeed distribution lines connected with wind generators are analyzed.Hence,while calculating the setting values of the instantaneous overcurrent protections and time delay instantaneous overcurrent protections of those lines,correction factors are utilized to overcome the influences of the wind generators with the help of the real-time online setting of the adaptive protection.Finally,a simulation is carried out to validate the effectiveness of the proposed scheme.关键词
风力发电/配电网/电流保护/自适应保护/撬棒电路Key words
Wind generation/distribution network/current protection/adaptive protection/chopper circuit分类
信息技术与安全科学引用本文复制引用
陈实,邰能灵,范春菊,洪树斌,唐跃中..考虑风力发电的配电网弱馈线路自适应电流保护[J].电工技术学报,2017,32(3):65-73,9.基金项目
教育部科学技术研究项目(113023A)、国家自然科学基金项目(51407115,51377104)和中国博士后科学基金(2014M560333)资助. （113023A）
