文章基本信息

标题：Support Vector Machine Based Classification of Current Transformer Saturation Phenomenon
本地全文：下载
作者：N. G. Chothani ; D. D. Patel ; K. D. Mistry 等
期刊名称：Journal of Green Engineering
印刷版ISSN：1904-4720
电子版ISSN：2245-4586
出版年度：2017
卷号：7
期号：1-2
页码：25-42
DOI：10.13052/jge1904-4720.7122
语种：English
出版社：River Publishers
摘要：During out of zone fault, Current Transformer (CT) saturation leads maloperation in unit type protective schemes. Detection and classification of saturation condition of CT is still a challenging issue. Thus, it is most important to correctly categorize CT saturation condition to increase reliability and stability of protective schemes. The proposed scheme utilizes transmission line CT secondary post fault current signals (sliding window) as an input to SVM. In order to achieve the most optimized classifier, Gaussian Radial Basis Function (RBF) has been used for training of SVM. Feasibility of the proposed scheme has been tested by modelling a part of 220 kV power systems in PSCAD/EMTDC software package. The algorithm is executed in MATLAB software. More than 720 unsaturated and 3600 saturated cases with varying burden resistance, remnant flux, DC component of current, noise penetration to current signal and fault inception angle have been generated and used for validation of the proposed scheme. The proposed scheme effectively discriminates between CT saturated and unsaturated conditions with very high classification accuracy more than 99% for different parameter variations.
关键词：CT Saturation; Burden Resistance; Remnant Flux; Support Vector Machine (SVM); Power System; Fault Condition