公开(公告)号：KR101331274B1

公开(公告)日：2013-11-20

申请号：KR1020120062514

申请日：2012-06-12

Applicant: 성균관대학교산학협력단

Inventor： 김철환 ,  김원기 ,  한준 ,  이제원

IPC: G01R31/08

Abstract: The present invention relates to a fault detection method of a distribution system and a fault detection device, which automatically detect failure through singular value decomposition and wavelet transformation of a phase voltage in a relay and determine the kind of the failure. The fault detection method of a distribution system according to an embodiment of the present invention comprises a step of obtaining phase-voltage data of a distribution system; a step of performing wavelet transformation for the phase-voltage data; a step of calculating a first fault detection index (SD) using a wavelet detail coefficient value to a value as a result of the wavelet transformation; a step of calculating a second fault detection index (SA) using a wavelet approximation coefficient value to the value as a result of the wavelet transformation; and a step of detecting the failure of the distribution system using the first fault detection index and the second fault detection index. [Reference numerals] (S10) Step of obtaining phase-voltage data of a distribution system;(S20) Step of performing wavelet transformation for the phase-voltage;(S30) Step of calculating a first fault detection index (SD) using a wavelet detail to a value as a result of the wavelet transformation;(S40) Step of calculating a second fault detection index (SA) using a wavelet approximation to the value as a result of the wavelet transformation;(S50) Step of detecting the failure of the distribution system using the first fault detection index and the second fault detection index;(S60) Step for detecting the kind of failure of the distribution system by using NSD, NSA, NSS, image voltage, and AR (SA Rank), which determines the ranking of NSA1 in an ascending order, with a differential value calculated by the first fault detection index and the second fault detection index

Abstract translation: 本发明涉及分配系统故障检测方法和故障检测装置，其通过奇异值分解和继电器中的相电压的小波变换来自动检测故障并确定故障的种类。 根据本发明实施例的分配系统的故障检测方法包括获得分配系统的相电压数据的步骤; 对相电压数据执行小波变换的步骤; 使用小波细节系数值作为小波变换的结果的值来计算第一故障检测索引（SD）的步骤; 使用小波近似系数值计算作为小波变换的结果的值的第二故障检测索引（SA）的步骤; 以及使用所述第一故障检测指标和所述第二故障检测指标来检测所述分配系统的故障的步骤。 （S10）获取配电系统的相电压数据的步骤（S20）对相电压进行小波变换的步骤;（S30）使用小波计算第一故障检测指标（SD）的步骤 细节作为小波变换的结果的值;（S40）使用对小波变换的结果的小波近似计算第二故障检测指数（SA）的步骤;（S50）检测故障的步骤 所述分配系统使用所述第一故障检测指标和所述第二故障检测指标;（S60）通过使用NSD，NSA，NSS，图像电压和AR（SA等级）来检测所述分配系统的故障类型的步骤，其确定 NSA1的排序按升序排列，具有由第一故障检测指标和第二故障检测指标计算出的差分值