电测与仪表2026，Vol.63Issue(1)：45-55,11.DOI:10.19753/j.issn1001-1390.2026.01.005
电力系统宽频振荡信号高可靠性检测研究
Research on high reliability detection of wideband oscillation signal in power system
摘要
Abstract
Aiming at the problem of multi-target oscillating signal detection in the range of 2.5 Hz～300 Hz in wideband measurement for novel power system,the design method of detection algorithm with high reliability(ex-tremely low false detection rate)as the core performance is studied.Adopting the windowed discrete-time Fourier transform(DTFT)detection algorithm,the optimization design of window function is studied deeply.Firstly,through theoretical analysis,the constraint conditions of high reliability detection on the spectral characteristics of window function are proposed,and the technical index of window function is defined,and the optimal selection cri-teria of window function is established.Secondly,based on the signal environment and performance requirements of broadband measurement signal detection,specific examples of window function optimization are given for sub-syn-chronous oscillation band(2.5 Hz～100 Hz)and high-frequency oscillation band(100 Hz～300 Hz)respectively.The simulation results show that the DTFT detection algorithm based on preference window is close to the expected design index,with high reliability and adaptability to complex signal environment,and has important engineering practical value in broadband measurement.关键词
宽频测量/信号检测/傅里叶变换/窗函数设计Key words
wideband measurement/signal detection/Fourier transform/window function design分类
信息技术与安全科学引用本文复制引用
王泽斌,汪芙平,裴茂林,黄松岭,赵伟..电力系统宽频振荡信号高可靠性检测研究[J].电测与仪表,2026,63(1):45-55,11.基金项目
国家电网有限公司科技项目(521852220006) （521852220006）
国家自然科学基金资助项目(52077112) （52077112）
