Small-signal stability analysis of parallel inverters with synchronous generator characteristics

被引：0
|
作者：
Yan X. [1 ]
Liu Z. [1 ]
Zhang B. [1 ]
Lü Z. [1 ]
Su X. [1 ]
Xu H. [1 ]
Ren Y. [1 ]
机构：
[1] State Key Laboratory of Alternate Electrical Power System With Renewable Energy Sources, North China Electric Power University, Baoding, 071003, Hebei Province
来源：
Dianwang Jishu/Power System Technology | 2016年 / 40卷 / 03期
关键词：
Eigenvalue; Inverter; Participation factor; Small-signal model; Virtual synchronous generator;
D O I：
10.13335/j.1000-3673.pst.2016.03.036
中图分类号：
学科分类号：
摘要：
Current small-signal stability analysis and parameter selection of inverters with synchronous generator characteristics usually ignore some dynamic characteristics and steady state operating pointchanges for simplicity. It can only judge small-signal stabilitytrend and its analysis result is not accurate enough. Firstly, a small-signal model of two isolated inverters connected in parallel with synchronous generatorcharacteristics was developed in this paper, and eigenvalues of the system were calculated. Then, participation factors showing relations between state variables and eigenvalueswere calculated. Considering that operating points would change when parameter changed, several root locus plots as function of the system parameters were obtained. Individual sensitivity analysis of certain eigenvalues close to real axis disclosed different parameters' contribution to oscillation mode. Finally, simulation resultsverifiedeffectiveness of the proposedmethod. © 2016, Power System Technology Press. All right reserved.
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页码：910 / 917
页数：7
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