Aiming at on - line supervision of capacitive equipment ’ s insulation , this dissertation performs some studies on the improving of the algorithmic routine of dissipation factor and its applications 本文以容性設(shè)備介質(zhì)損耗因數(shù)在線監(jiān)測為目的,重點(diǎn)研究了介質(zhì)損耗值在線監(jiān)測算法的改進(jìn)及其應(yīng)用。
Firstly , this dissertation makes an in - depth study on the principium of on - line supervision of capacitive equipment ’ s insulation . diversified algorithmic routines that based on software are analysed and compared to find out their merits or defects 首先,深入了解了容性設(shè)備介質(zhì)損耗因數(shù)tan在線監(jiān)測的工作原理,討論了以軟件為主的各種介損值在線監(jiān)測算法,對(duì)其基本原理及優(yōu)缺點(diǎn)進(jìn)行了分析。
Secondly , because of the faultiness of these algorithmic routines of dissipation factor in existence , this dissertation puts forward an improved correlation function algorithm based on wavelet analysis , and the improved algorithm focuses on two lesding aspects : one is the methods to reduce noise and distill the fundamental , the other is the means to reduce the errors resulted by frequency fluctuating 其次針對(duì)現(xiàn)有介損計(jì)算方法的不足,提出了一種基于小波變換理論的改進(jìn)相關(guān)函數(shù)法的介質(zhì)損耗值計(jì)算方法,主要從去噪、提取基波的方法以及降低由于電網(wǎng)頻率波動(dòng)所造成的誤差兩個(gè)方面來考慮。并對(duì)此方法進(jìn)行了仿真分析和驗(yàn)證了改進(jìn)算法的優(yōu)越性。