电力系统自动化2016，Vol.40Issue(7)：22-29,8.DOI:10.7500/AEPS20150527014
风电场等效虚拟惯性时间常数计算
Calculation of Equivalent Virtual Inertial Time Constant of Wind Farm
摘要
Abstract
With the increasing penetration of wind power,using virtual inertial control technology to address the frequency security problem under frequency accident conditions is an inevitable demand of power grids in the future.The newly-presented topic of the dynamic frequency characteristic incorporating virtual inertial control technology of wind turbines will be confronted by the power system.The quantitative representation of the equivalent virtual inertial time(HeqWF)constant of the doubly fed induction generator (DFIG) based wind farm is researched.HeqWF is defined and its physical significance is clarified while the relationship between solving H eqWF and studying the dynamic frequency characteristics of power grid is analyzed.A simplified model of DFIG and a wind farm model incorporating the virtual inertial control are developed and the analytical solutions of HeqWF in the frequency and time domains are solved.The correctness and accuracy of HeqWF are verified by comparing calculated and simulated values,the time-varying characteristic of HeqWF is explored and the resulting mechanism is investigated.关键词
虚拟惯性控制/动态频率特性/双馈型风电场/等效虚拟惯性时间常数/时变特性Key words
virtual inertial control/dynamic frequency characteristic/doubly fed induction generator based wind farm/equivalent virtual inertial time constant/time-varying characteristic引用本文复制引用
李世春,邓长虹,龙志君,周沁,郑峰..风电场等效虚拟惯性时间常数计算[J].电力系统自动化,2016,40(7):22-29,8.基金项目
国家自然科学基金资助项目(51190104). This work is supported by National Natural Science Foundation of China(No.51190104). （51190104）
