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。
A high speed protection scheme using Wavelet Transform for Teed line is described; protec- tion unit uses three-phase voltage and current after synchronized in each branch. Us6 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.
出处
《江西电力职业技术学院学报》
CAS
2012年第2期1-3,30,共4页
Journal of Jiangxi Vocational and Technical College of Electricity
