| 正交小波在发电机定子单相接地保护中的应用 |
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| 引用本文： | 邰能灵,尹项根.正交小波在发电机定子单相接地保护中的应用[J].电力系统自动化,2001,25(1):34-37. |
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| 作者姓名： | 邰能灵 尹项根 |
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| 作者单位： | 华中科技大学电力系， 武汉 430074 |
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| 基金项目： | “九五”重大科技攻关项目! (97- 312 - 0 6 - 2 - 2 a)，国家教委跨世纪优秀人才培养计划基金 |
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| 摘 要： | 提出了基于正交小波的发电机定子单相接地保护新方法，即利用经小波变换后机端和中性点侧三次谐波电压的局部模极大值符号特性是否相同来识别定子接地故障。仿真结果表明，该方案在各种运行方式下均能取得很高的灵敏度，满足现代大型发电机组继电保护的要求。
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| 关 键 词： | 正交小波 定子接地 三次谐波零序电压 外加电源 |
| 收稿时间： | 1/1/1900 12:00:00 AM |
| 修稿时间： | 1/1/1900 12:00:00 AM |
SINGLE-PHASE GROUNDED FAULT PROTECTION SCHEMES OF GENERATOR STATOR BASED ON ORTHONORMAL WAVELET |
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| Tai N engling,Yin Xianggen Huazhong University of Science and Technology,Wuhan ,China.SINGLE-PHASE GROUNDED FAULT PROTECTION SCHEMES OF GENERATOR STATOR BASED ON ORTHONORMAL WAVELET[J].Automation of Electric Power Systems,2001,25(1):34-37. |
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| Authors: | Tai N engling Yin Xianggen Huazhong University of Science and Technology Wuhan China |
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| Affiliation: | Tai N engling,Yin Xianggen Huazhong University of Science and Technology,Wuhan 430 0 74,China |
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| Abstract: | A new stator grounded fault protection schem e based on wavelet transform is presented in this paper.With the com parison of the polarity of local maxim a of the 3rd harmonic zero sequence voltages between the generator neutral and terminals,the new approach can find the grounded fault sensibly.Simulation results show that the scheme can obtain the high sensitivity which the huge generator requires during all operating conditions. |
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| Keywords: | orthonorm al wavelet stator grounded fault the 3rd harmonic zero sequence voltage injection voltage |
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