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| 摘要: |
| 提出了一种基于小波变换的新型母线保护。利用小波变换提取母线内、外部故障时的暂态特征．通过比较母线各回路暂态电压、电流小波变换输出波形的相似性实现母线内、外部故障的准确、快速识别。通过EMTP的大量仿真计算，验证了所提保护原理的正确性和有效性。 |
| 关键词: 母线保护 小波变换 故障暂态 |
| DOI： |
| 分类号:TM773 |
| 基金项目: |
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| Bus protection based on wavelet transform |
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DING Yu 1 2 LI Hai-feng 1 WANG Gang 1
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| Abstract: |
| A novel bus protection scheme is presented,in which wavelet transform technique is ap-plied to extract transient characteristics during internal and external bus faults.It identifies an in-ternal or external fault correctly an d quickly by comparing the similarities of the wavelet transform waveforms for the transient voltages an d currents of all circuits connected to the bus.The EMTP simulations show that the proposed scheme is correct and effective. |
| Key words: bus protection,wavelet transform,fault-generated transients |
