首页>
外国专利>
Detection Method of High Resistance Ground Faults Using Wavelet Transform
Detection Method of High Resistance Ground Faults Using Wavelet Transform
展开▼
机译：小波变换的高阻接地故障检测方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of detecting a high-resistance ground fault using a wavelet transform, and more particularly, to a method and apparatus for detecting a high resistance ground fault using a wavelet transform, A second step of checking whether there is a signal detected through a low-pass filter of a 4-stage low-pass filter among the filters of the multi-stage wavelet filter bank; and a second step of checking whether the signal detected through the low-Stage low-pass filter is detected, then a fundamental wave with respect to the coefficient value of the low-pass filter of the fourth stage is extracted to estimate a high-level advantage, and if there is no signal detected through the low-A third step of checking whether there is a signal detected through a high-pass filter, and a third step of checking whether the signal detected through the high-Stage fault, detecting a high-resistance ground fault by the signal, extracting a fundamental wave with respect to the coefficient value of the four-stage low-pass filter, and performing an impedance trajectory of the fundamental wave to estimate a high-Therefore, when a high-resistance ground fault occurs, it is detected and the fault section is shut off, thereby preventing the occurrence of a wide-range power failure.
展开▼
