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Fault Characteristic of Transient Current Travelling Waves and Its Analysis with Wavelet Transform

DongXinzhou (TianjinUniversity 300072 ChinalGeyaozkong tXi `anJiao tong University 710049 China)Xu Biniyin (Kehui Electric Co. Ltd. Chinal  
The paper discussed the fault inforniation of transient current travelling waves in trans-mission line. Its main characteristic is ``changing suddenly'' as travelling waves arrived at ``measuringpoint''. Using dyadic wavelet transforni, the wavelet transforrn will appears ``modulus maxima''.These modulus maxima could denote fault characteristic of travelling waves. Based on the modulusmaxima, faultstarting element and fault phase selection element can be constructed and protection relayand fault location with travelling waves will be realized.
【Fund】: 国家教委博士点基金;;中国博士后科学基金
【CateGory Index】: TM771
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