Paper Title:
Flashover Pattern Recognition by HMM Based on Fractal Characteristics of Leakage Current on HV Insulators
  Abstract

With the increase of voltage grade in power transmission system and the aggravation of industrial pollution, flashover of contaminated insulators in HV and UHV system is more and more serious, threatening the security of power transmission severely. The key of improving the security of system is exploring the methods of monitoring and recognizing states of insulator’s surface by some character values. In this paper, multi-characteristic Hidden Markov Model is founded with wavelet and chirplet fractal characteristics of leakage current(LC), through which the flashover patterns are recognized during the developing stages. The results show that fractal characteristics HMM recognized flashover pattern efficiently and successfully, and that is useful to help related stuff to make correct decision and ensure the security of power delivery.

  Info
Periodical
Edited by
Qi Luo
Pages
1148-1151
DOI
10.4028/www.scientific.net/AMM.55-57.1148
Citation
A. Hui, "Flashover Pattern Recognition by HMM Based on Fractal Characteristics of Leakage Current on HV Insulators", Applied Mechanics and Materials, Vols. 55-57, pp. 1148-1151, 2011
Online since
May 2011
Authors
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Yan Shi, Xing Liang Jiang, Qi Fa Wan, Xiong Wu, Tao Xu
Abstract:The artificial pollution tests are implemented on an IEC standard suspension insulator, and the leakage current waveforms and frequency...
668
Authors: Ali Hui
Abstract:As the improve of voltage class in power system and the aggravation of industrial pollution, flashover of contaminated insulators in HV and...
2113
Authors: P. Wimonthanasit, E. Chaidee, P. Jirapong, W. Thipprasert
Chapter 16: Miscellaneous Topics
Abstract:Electrical insulators of the Provincial Electricity Authority (PEA) of medium system are mostly porcelain insulator types that consist of pin...
1901
Authors: Dan Zhong, Jian Xun Hu, Wen Fang Ding, Hui Chen
Chapter 3: Measurement, Detection and Instrument
Abstract:This article describes a transmission line insulator leakage current monitoring device, the device is based on the MSP430 ultra low power...
485
Authors: Ling Chen, Rui Liu, Yong Xing Cao
Chapter 5: Electrical Engineering, Electrical Machines and Apparatus
Abstract:Under low air pressure, dc arcs often levitate from surface of polluted insulator to form air-gap arcs during flashover process. The...
403