A Novel Method of Fault Line Selection Based on Voting Mechanism of Prony Relative Entropy Theory
A Novel Method of Fault Line Selection Based on Voting Mechanism of Prony Relative Entropy Theory
复制标题
DOI：
--
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Chu Zheng-chao
中科院分区：
文献类型：
--
作者：
Chu Zheng-chao
提出了一种小电流接地系统的故障选线方法。首先，采用proony算法拟合故障发生后第一个T/4周期的暂态零序电流信号；其次，根据最大能量原则选取具有故障特征的暂态优势分量；最后，采用初步投票和k值检查相结合的投票机制对proony相对熵值进行投票。实践证明，该方法不仅能准确地检测出故障线路，而且提高了故障选线结果的可靠性。
A fault line selection method of small current to ground system was proposed in the essay.Firstly,Prony algorithm was used to fit the transient zero-sequence current signal in the first T/4 cycle after fault occurs;secondly,transient dominant components with fault features were selected based on the principle of maximum energy;lastly,the voting mechanism which combines the preliminary vote with the k value checking was used to vote the Prony relative entropy value.It is proved that this method can not only accurately detect the fault line but also improve the reliability of the results in fault line selection.