电力系统自动化2016，Vol.40Issue(16)：1-7,7.DOI:10.7500/AEPS20150827007
双馈风电机组虚拟惯量控制对系统小干扰稳定性的影响
Impact of Virtual Inertia Control of DFIG Wind Turbines on System Small-signal Stability
摘要
Abstract
Doubly‐fed induction generator (DFIG) wind turbines with virtual inertia control considered and the power system are coupled to each other on dynamic characteristic . Since the control input of virtual inertia is affected by the tracking ability of phase‐locked loop ( PLL ) , the impact of DFIG wind turbines considering virtual inertia control under the action of PLL on system small‐signal stability has become a problem demanding prompt solution . First , by taking into account the transient characteristics of rotor voltage , PLL , virtual inertia control , rotor side converter and mechanical part of DFIG wind turbines , an interconnected power system model of DFIG considering PLL and virtual inertia control is created . Then , as both PLL and virtual inertia control will affect the oscillation modes of synchronous generators , the impacts of PLL and virtual inertia control on power system small‐signal stability are explored theoretically by analytic method . The results show that the damping ratio of power system is affected by the participation factor of virtual inertia influenced by PLL . Besides , the smaller the PI parameter of PLL is , the smaller the participation factor of virtual inertia is , and the bigger the damping ratio of electromechanical oscillation will be . This is opposite to the impact of DFIG without considering virtual inertia control under the action of PLL on system stability . The rationality of the interconnected power system model and correctness of analysis results have been verified by simulation .关键词
双馈风电机组/虚拟惯量/锁相环/小干扰稳定性/阻尼特性Key words
doubly-fed induction generator ( DFIG ) wind turbines/virtual inertia/phase-locked loop ( PLL )/small-signal stability/damping characteristic引用本文复制引用
马静,李益楠,邱扬,王增平..双馈风电机组虚拟惯量控制对系统小干扰稳定性的影响[J].电力系统自动化,2016,40(16):1-7,7.基金项目
国家自然科学基金资助项目（51277193）；国家重点基础研究发展计划（973计划）资助项目（2012CB215206）；中央高校基本科研业务费专项资金资助项目（2014ZZD02）。 （）
