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| 输电线路暂态电流行波的故障特征及其小波分析 | |
| 引用本文： | 董新洲,葛耀中,徐丙垠.输电线路暂态电流行波的故障特征及其小波分析[J].电工技术学报,1999,14(1):59-62. |
| 作者姓名： | 董新洲 葛耀中 徐丙垠 |
| 作者单位： | 1. 天津大学,300072 2. 西安交通大学,710049 3. 科汇电气有限公司 |
| 基金项目： | 国家教委博士点基金，中国博士后科学基金 |
| 摘 要： | 把小波变换应用于输电线路故障后所出现的暂态行波的分析和研究中，揭示了行波信号的“突变”和其小波变换模极大值之间的关系，行波信号的小波变换模极大值标志着电流行波中最主要的故障特征。利用这些模极大值可以构成利用电流行波的故障起动元件，选相元件，还可构成利用电流行波的继电保护和故障测距。 |
| 关 键 词： | 输电线路 暂态电流行波 故障特征 二进小波变换 |
| 修稿时间： | 1998年6月12日 |
Fault Characteristic of Transient Current Travelling Waves and Its Analysis with Wavelet Transform |
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| DongXinzhou.Fault Characteristic of Transient Current Travelling Waves and Its Analysis with Wavelet Transform[J].Transactions of China Electrotechnical Society,1999,14(1):59-62. | |
| Authors: | DongXinzhou |
| Affiliation: | DongXinzhou (TianjinUniversity 300072 ChinalGeyaozkong tXi `anJiao tong University 710049 China |
| Abstract: | 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. |
| Keywords: | Transmission line Transient current travelling waves Fault characteristicDyadic wavelet transforni Modulus maxima |
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