基于改进自适应Prony算法的故障信号录波方法研究  

Research on Fault Signal Recording Method Based on Improved Adaptive Prony Algorithm

作　　者：鄢晶 李进扬 王莉琳 段志强 王亚捷 YAN Jing;LI Jinyang;WANG Lilin;DUAN Zhiqiang;WANG Yajie(State Grid Hubei Electric Power Corporation Limited,Wuhan 430074,China;Economic Research Institute,State Grid Hubei Electric Power Corporation Limited,Wuhan 430074,China)

机构地区：[1]国网湖北省电力有限公司,武汉430074 [2]国网湖北省电力有限公司经济技术研究院,武汉430074

出　　处：《高压电器》2025年第4期211-218,共8页High Voltage Apparatus

基　　金：国家自然科学基金资助项目(51607104)。

摘　　要：配电网发生故障时故障信号的复杂特性,给电力系统故障录波研究带来了严峻挑战。文中将搜索步长作为自适应变量,提出了一种基于改进自适应Prony算法的故障信号录波方法。该方法以均方相对拟合误差为判据,使用变步长的手段搜索信号子段的分界点,在搜索初期用较大步长确立大致分界点,而后逐渐缩小步长以确立精确的子段分界点。基于仿真结果表明:基于改进自适应Prony算法可以在保证实际故障信号分析处理正确性与有效性的同时,显著地提高计算效率。辨识和定位的有效性和准确性有径直的联系。The complex characteristics of the fault signal in the case of fault of the distribution network bring severe challenges to the study of fault recording of power system.In this paper,the searching step is taken as an adaptive vari-able,and a kind of fault signal recording method based on the improved adaptive Prony algorithm is proposed.This method takes the mean square relative fitting error as the criterion,and the sub-segment boundary points are searched by the variable step size.At the initial stage of the search,a large step length is used to establish the approxi-mate boundary point,and then the step size is gradually reduced to determine the accurate boundary point of the sub-segment.The simulation results show that the improved adaptive Prony algorithm can significantly improve the com-putational efficiency while ensuring the correctness and effectiveness of the actual fault signal analysis and processing.

关 键 词：故障录波 自适应 PRONY算法 变步长 

分 类 号：TM711[电气工程—电力系统及自动化]