基于暂态电流固态能量的故障识别分析

杨振宝;; 贺振华

杨振宝;,贺振华.基于暂态电流固态能量的故障识别分析[J].电测与仪表,2018,55(24):72-77.
Zhenbao Yang,Zhenhua He.Fault identification analysis of power line based onEMD decomposition method[J].Electrical Measurement & Instrumentation,2018,55(24):72-77.

基于暂态电流固态能量的故障识别分析

Fault identification analysis of power line based onEMD decomposition method

DOI：

中文关键词: 特高压线路 EMD分解法暂态能量 EMTP

英文关键词:UHVStransmissionSlines, The EMD decomposition method, Transient energy, EMTP

基金项目:

作者中文名	作者英文名	单位
杨振宝;	Zhenbao Yang	深圳供电局有限公司
贺振华	Zhenhua He	深圳供电局有限公司

摘要点击次数: 1378

中文摘要:

针对电力系统特高压线路暂态故障,本文在固有模态能量分析法的基础上提出了一种基于暂态电流的故障分析法。由于EMD分解法具有良好的完备性和正交性,可通过相对能量系数分析故障过程暂态能量的大小,因此通过比较同一时刻、同一位置的三相线路暂态电流固有能量系数的相对大小就可以识别出故障相别及类型。在对该方法进行理论分析和EMTP模型搭建之后,仿真结果也表明该方法能够快速识别故障性质,对于保护功能的实现以及自动重合闸的逻辑设计均具有指导意义。

英文摘要:

Aiming at the transient fault of SUHVStransmissionSlines in power system, a fault analysis method based on transient current is presented in this paper. As EMD decomposition method has good completeness and orthogonality, it can analyze the size of transient energy of fault process through the relative energy coefficient. Therefore, by comparing the relative size of the inherent energy coefficient of transient current of three-phase line at the same time and location, fault phase and type can be identified. After the theoretical analysis and EMTP model construction, the simulation results also indicate that the method can quickly identify the fault nature, which is of guiding significance for the realization of protection function and the logical design of automatic reclosing.

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