小波奇异性检测理论在电力系统继电保护装置故障诊断中的应用

Application of theory of singularity detection based on wavelet transformation in relay protect fault diagnosis

首先阐述了基于小波分析的奇异信号检测理论及计算Lip指数 ,定性说明了信号奇异点的奇异程度 .然后以实测的电压、电流信号为例说明了小波变换在奇异信号检测中的实现过程 .最后将其应用于电力系统继电保护故障诊断中 ,简化了Lip指数及奇异点算法步骤 ,取得了较为满意的效果 .

It has introduced the theory of singularity detection based on wavelet analytical method and calculation LIP exponent.The singularity degree for signal singularity point is explained in qualitative analysis,Wavelet transform in realizing process singularity detecting is illuminated by true collector signal of voltage and current.It is applied in power system relay protect for fault diagnosis,and predigested LIP exponent and singularity point algorithmic step.