摘要
阐述了快速、准确识别电网故障的必要性,提出了以3次B样条小波为分解工具,通过分解故障线路电流确定故障时刻及故障切除时刻的新方法。分析了利用二进小波确定故障线路的新思想,大量仿真论证了在各种故障模式下所提出算法的有效性和准确性。
The necessity to distinguish power grid fault fast and accurately is expounded. A new way of taking cubic B-spline wavelet as analysis tool is put forward, which determines fault time and fault clearing time through the decomposition of faulty transmission line current. A new scheme for using dyadic wavelet to detect fault line is analyzed. Extensive simulation results demonstrate that the validity and accuracy of the algorithm proposed in this paper under a series of faulty mode.
出处
《陕西电力》
2008年第12期48-51,共4页
Shanxi Electric Power
关键词
故障诊断
小波理论
故障选线
fault diagnosis
wavelet theory
fault line selection
