电测与仪表2017，Vol.54Issue(22)：104-110,7.
基于自适应多尺度形态学和CEEMD的谐振接地故障选线研究
Research of resonant grounding fault line selection based on adaptive multi-scale morphology and CEEMD
摘要
Abstract
In order to solve the problem of inaccurate fault line selection in small current resonant grounding system, a method for line selection based on adaptive multi-scale morphological filtering and complementary ensemble empiri-cal mode decomposition(CEEMD)is proposed in this paper.The adaptive morphological filtering method can effec-tively suppress the wideband white noise and isolate impulse noise associated with the power system fault process.Af-ter de-noising,the line selection is conducted by comparing the first-order differential polarity and phase of the char-acteristic components which exist in the faulty line and the non-faulty line through the CEEMD decomposition and Hil-bert-Huang transform(HHT)transform.Compared with empirical mode decomposition(EMD)and ensemble empiri-cal mode decomposition(EEMD), CEEMD can reduce the influence of modal aliasing and the decomposition error better.In the MATLAB simulation software,different fault locations,transition resistances and fault initial angles are analyzed,and the above methods are verified.A lot of simulation results show that the method can′t be influenced by initial fault angle,fault location and transition resistance.关键词
谐振接地系统/CEEMD/自适应多尺度形态滤波/故障选线/HHTKey words
resonant grounding system/CEEMD/adaptive multi-scale composite morphological filtering/fault line se-lection/HHT分类
信息技术与安全科学引用本文复制引用
陈奎,杨炼,王洪寅,万新强..基于自适应多尺度形态学和CEEMD的谐振接地故障选线研究[J].电测与仪表,2017,54(22):104-110,7.基金项目
国家自然科学基金资助项目(51407183) （51407183）
