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Front. Inform. Technol. Electron. Eng.  2010, Vol. 11 Issue (12): 1016-1024    DOI: 10.1631/jzus.C0910617
    
A wavelet packet based method for adaptive single-pole auto-reclosing
Sadegh Jamali, Navid Ghaffarzadeh
Centre of Excellence in Power Systems Automation and Operation, Iran University of Science and Technology, Tehran, Iran
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Abstract  We present a new algorithm for adaptive single-pole auto-reclosing of power transmission lines using wavelet packet transform. The db8 wavelet packet decomposes the faulted phase voltage waveform to obtain the coefficients of the nodes 257, 259 to 262. An index is then defined from the sum of the energy coefficients of these nodes. By evaluating the index, transient and permanent faults, as well as the secondary arc extinction instant, can be identified. The significant advantage of the proposed algorithm is that it does not need a threshold level and therefore its performance is independent of fault location, line parameters, and operating conditions. Moreover, it can be used in transmission lines with reactor compensation. The proposed method has been successfully tested under a variety of fault conditions on a 400 kV overhead line of the Iranian National Grid using the Electro-Magnetic Transient Program (EMTP). The test results validated the algorithm’s ability in distinguishing between transient arcing and permanent faults and determining the instant of secondary arc extinction.

Key wordsAdaptive auto-reclosing      Arcing faults      Permanent faults      Transmission lines      Wavelet packet transform     
Received: 15 October 2009      Published: 09 December 2010
CLC:  TM762.2  
Cite this article:

Sadegh Jamali, Navid Ghaffarzadeh. A wavelet packet based method for adaptive single-pole auto-reclosing. Front. Inform. Technol. Electron. Eng., 2010, 11(12): 1016-1024.

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http://www.zjujournals.com/xueshu/fitee/10.1631/jzus.C0910617     OR     http://www.zjujournals.com/xueshu/fitee/Y2010/V11/I12/1016


A wavelet packet based method for adaptive single-pole auto-reclosing

We present a new algorithm for adaptive single-pole auto-reclosing of power transmission lines using wavelet packet transform. The db8 wavelet packet decomposes the faulted phase voltage waveform to obtain the coefficients of the nodes 257, 259 to 262. An index is then defined from the sum of the energy coefficients of these nodes. By evaluating the index, transient and permanent faults, as well as the secondary arc extinction instant, can be identified. The significant advantage of the proposed algorithm is that it does not need a threshold level and therefore its performance is independent of fault location, line parameters, and operating conditions. Moreover, it can be used in transmission lines with reactor compensation. The proposed method has been successfully tested under a variety of fault conditions on a 400 kV overhead line of the Iranian National Grid using the Electro-Magnetic Transient Program (EMTP). The test results validated the algorithm’s ability in distinguishing between transient arcing and permanent faults and determining the instant of secondary arc extinction.

关键词: Adaptive auto-reclosing,  Arcing faults,  Permanent faults,  Transmission lines,  Wavelet packet transform 
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