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| 基于小波变换的超高压非对称T型线路故障保护方案 | |
| 引用本文： | 谢志超,刘廷瑶,苗军.基于小波变换的超高压非对称T型线路故障保护方案[J].江西电力职业技术学院学报,2012,25(2):1-3,30. |
| 作者姓名： | 谢志超 刘廷瑶 苗军 |
| 作者单位： | 1. 南昌供电公司,江西南昌,330006 2. 南昌县供电有限责任公司,江西南昌,330200 3. 江西电力职业技术学院,江西南昌,330032 |
| 摘 要： | 描述了一种利用小波变换对T型线路进行快速保护的方案,保护单元使用各支路经同步化后的三相电压电流,使用小波变换提取故障电压电流频带中的暂态高频分量,进行故障检测与类型判别。建立了非对称T型线路仿真模型,针对不同故障位置、故障类型、故障初始角和故障过渡电阻进行仿真验证。结果表明,该方案快速,准确。 |
| 关 键 词： | 电力系统 继电保护 T型线路 暂态量 小波变换 |
Protection Scheme for EHV Asymmetrical Teed Transmission Lines Based on Wavelet Transform |
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| XIE Zhi-chao , LIU Ting-yao , MIAO Jun.Protection Scheme for EHV Asymmetrical Teed Transmission Lines Based on Wavelet Transform[J].Journal of Jiangxi Vocational and Technical College of Electricity,2012,25(2):1-3,30. | |
| Authors: | XIE Zhi-chao LIU Ting-yao MIAO Jun |
| Institution: | 1.Nanchang Power Supply Company,Nanchang 330006,China;2.Power Supply Co.,Ltd of Nanchang County,Nanchang 330200,China;3.Jiangxi Vocatinal and Technical College of Electricity,Nanchang 330032,China) |
| Abstract: | A high speed protection scheme using Wavelet Transform for Teed line is described;protection unit uses three-phase voltage and current after synchronized in each branch.Use WT to extract the transient high frequency from fault voltage and current band for fault detection and type discrimination.An asymmetric Teed simulation model is built;various simulations are implementing for different fault location,fault type,fault the initial angle and fault transition resistance.The results show that the scheme is quickly and accurately. |
| Keywords: | power system protection teed line transient wavelet transform |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |