电力工程技术2025，Vol.44Issue(3)：140-149,10.DOI:10.12158/j.2096-3203.2025.03.013
基于量测模型的开环模式谐振风险判定
Open-loop mode resonance risk determination based on measurement model
摘要
Abstract
The open-loop mode resonance theory is an important theoretical achievement to explain the mechanism of system instability caused by the grid connection of permanent magnet synchronous generator(PMSG),but the determination of the resonance risk of open-loop mode based on the black box measurement model is rarely introduced in its theoretical research.In the past,the determination of resonance risk in open-loop mode relied on accurate parameterization models.However,in practical applications,it is often difficult to obtain the detailed parameters of PMSG,so it is impossible to establish an accurate parameterization model of the system.Therefore,a method for determining the risk of open-loop mode resonance based on the measurement model is proposed in this paper.Firstly,the PMSG to be studied is regarded as a black box model,and its frequency response is measured by injecting voltage disturbance using frequency sweep method.The impedance transfer function matrix is obtained after fitting the frequency response of the measurement model by vector fitting technology,which is transformed into a time-domain state-space model and connected to the closed-loop system.Then,the general analysis method of open-loop mode resonance based on the measurement model is used to determine the system instability risk.Finally,a simulation example is used to demonstrate the analysis and determination process of resonance risk in open-loop mode.The results show that the resonance risk of open-loop mode can also be determined based on the measurement model.The proposed method does not need to obtain the detailed internal parameters of the PMSG,and has high engineering practicability.关键词
开环模式谐振风险/量测模型/直驱风机/传递函数矩阵/矢量拟合/系统辨识/回归分析Key words
open-loop mode resonance risk/measurement model/permanent magnet synchronous generator/transfer function matrix/vector fitting/system identification/regression analysis分类
信息技术与安全科学引用本文复制引用
张星亮,杜文娟,王海风..基于量测模型的开环模式谐振风险判定[J].电力工程技术,2025,44(3):140-149,10.基金项目
国家自然科学基金资助项目(52077144) （52077144）
