Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Defective Porcelain Insulator Inspection Based on Harmonic Retrieval

고조파 추출을 이용한 불량애자 검출장치 개발연구

  • Lu, Hao (Department of Electronic Engineering, Pusan National University) ;
  • Jin, Hong-Zhe (Department of Electronic Engineering, Pusan National University) ;
  • Han, Sun-Sin (Department of Electronic Engineering, Pusan National University) ;
  • Lee, Jang-Myung (Department of Electronic Engineering, Pusan National University)
  • 로호 (부산대학교 전자공학과) ;
  • 김홍철 (부산대학교 전자공학과) ;
  • 한순신 (부산대학교 전자공학과) ;
  • 이장명 (부산대학교 전자공학과)
  • Published : 2007.07.11
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Abstract

Porcelain insulators are widely used in overhead high-voltage power transmission lines while providing adequate insulation to withstand switching and lightning over voltages. For the safety consideration, we proposed a novel insulator inspection method using harmonic, which is retrieved from the low frequency signal. The working principle of this new method is based on the relationship between the low frequency harmonic and the defective characteristic of the insulators. So, in this paper, the harmonic retrieval in the complex noise is solved with the HOC (High Order Cumulants) is extended. In the experiment, as one of our dedicated contribution, we illustrate low frequency harmonic and the defective characteristics of the porcelain insulators.

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