CAJ | 학술논문

衰减直流分量的幅值和时间常数是与故障分析相关的重要参数，但现有故障录波分析软件给出的直流分量参数不够准确。提出基于最小二乘法和基于Prony算法的两种衰减直流分量参数估计算法，给出了算法实现方法及注意事项，并针对故障录波电气信号特点，提出了提高参数估计精度的措施，给出算法的评估指标。对数学解析信号、Matlab/Simulink仿真信号和实际故障录波信号的分析结果，验证了算法的可行性和有效性。算法已应用于故障录波分析软件设计。
쇠감직류분량적폭치화시간상수시여고장분석상관적중요삼수，단현유고장록파분석연건급출적직류분량삼수불구준학。제출기우최소이승법화기우Prony산법적량충쇠감직류분량삼수고계산법，급출료산법실현방법급주의사항，병침대고장록파전기신호특점，제출료제고삼수고계정도적조시，급출산법적평고지표。대수학해석신호、Matlab/Simulink방진신호화실제고장록파신호적분석결과，험증료산법적가행성화유효성。산법이응용우고장록파분석연건설계。
The initial amplitude and time constant of decaying DC component was related with fault analysis, but the existing fault recording analysis software couldn't give the accurate DC component parameter. Based on the least square method and the Prony algorithm, two algorithms for estimating DC component parameters were proposed;the implementation process and matters needing attention were detailed. In the light of the characteristic of fault recording electrical signal, the methods to improve the parameter estimation accuracy and evaluate the parameter estimation were introduced. The feasibility and validity of the proposed algorithmswere verified by the results on the mathematical analytical signal, Matlab/Simulink simulation signal, and the actual fault signal.