主动配电网保护方案研究分析.pdfVIP

第 34 卷 第 16 期 中 国 电 机 工 程 学 报 Vol.34 No.16 Jun. 5, 2014 2584 2014 年 6 月 5 日 Proceedings of the CSEE ©2014 Chin.Soc.for Elec.Eng. DOI ：10.13334/j.0258-8013.pcsee.2014.16.008 文章编号：0258-8013 (2014) 16-2584-07 中图分类号：TM 77 主动配电网保护方案的研究 刘凯，李幼仪 (ABB 中国研究院，北京市 朝阳区 100015) Study on Solutions for Active Distribution Grid Protection LIU Kai, LI Youyi (ABB Corporate Research China, Chaoyang District, Beijing 100015, China) ABSTRACT: Traditional protection relays might mal-operate 0 引言 or fail to operate in active distribution grids, in which the 传统配电网的规划设计方法和运行控制模式 direction and magnitude of fault currents will be affected by 无法适应高渗透率分布式能源的接入，基于信息和 the distributed generation resources. The existed ways solving above problems need voltage information, which is always 通信技术及高级量测设备的主动配电网提供了一 unavailable in the distribution network. This paper aimed to 种解决方案，在主动配电网中，故障特征改变，基 design the protection solutions for active distribution grid. A 于传统辐射状配电网的电流保护方案可能发生误 voltage independent directional element with higher sensitivity 动或拒动[1-7] 。文献[8]从风电机组的运行特征、控 was designed firstly, and it used the phase information of fault 制技术及并网系统等方面研究风电接入电力系统 currents from at least three feeders connecting to the bus bar to 故障电流的特征，指出风机控制策略影响电流的大 identify fault direction. Then, based on different principles 小和相位，频率也偏离工频，风场呈现弱电源特征。 including directional current protection, pilot line protection, bus-bar protectio