摘要
针对传统后备保护的缺陷,在智能变电站全站信息共享的基础上,采用了传统主保护加集中式后备保护的保护配置方案.研究了基于方向比较原理的集中式后备保护算法.首先根据方向元件与一次设备的连接关系形成一次设备/方向元件关联矩阵,其次根据方向元件的输出值完成矩阵的赋值,根据赋值之后的关联矩阵计算一次元件的故障方向综合值,然后确定判据及门槛值,实现故障元件的准确识别.算例分析结果表明该算法能够准确识别故障元件.
To solve traditional backup protection＇s defects,based on smart substation information sharing use thetraditional primary protection plus centralized backup protection configure is adopted. The algorithm based on thecomparison of direction is studied. According to the connections of the direction elements and primary equipments,thecorrelation matrix is formed,and the matrix based on the output value of the directional elements is assigned. Thethreshold criterion and accurate identification of faulty components are determined. Finally,specific example computingresults show that the algorithm can accurately identify the faulty components.
出处
《河南科学》
2016年第5期732-736,共5页
Henan Science
基金
2013年河南省重点科技攻关项目(132102210417)
关键词
智能变电站
集中式后备保护算法
方向比较
关联矩阵
intelligent substation
centralized backup protection algorithm
compare direction
correlation matrix
