D-S证据理论在小电流故障选线中的应用研究

Application of D-S evidence theory of information fusion on fault line selection

介绍了在不同的情况下选取适当的故障选线算法来处理故障信息,并对故障信息进行D-S证据理论的信息融合,提高了故障选线的准确率.指出如何将选取的群体比幅比相算法和小波分析方法进行改进以适合证据理论的融合,如何设计算法计算D-S证据理论中的不确定性问题.

To be one important method of information fusion, the D -S evidence theory apply to fault line selection in small current power system can improve its accuracy. Details about choosing different methods to dispose fault line information in different conditions and the line fault probability to be fused by the information fusion to improve its accuracy. Points out how to ameliorate the chosen methods the compare breaths and phases selection theory and the wavelet analysis, how to improve the methods to use for information fusion, and designs arithmetic to calculate the indeterminacy of the D - S evidence theory.