Virtual Synchronous Stability Analysis and Optimized Inertia Control for Wind Power Grid-connected System

被引：0
|
作者：
Zhang X. [1 ]
Zhu Z. [1 ]
Fu Y. [1 ]
机构：
[1] State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Baoding
来源：
Gaodianya Jishu/High Voltage Engineering | 2020年 / 46卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Hardware-in-the- loop simulation; Model reduction; Nonlinear disturbance observer; Virtual inertia; Wind power generation;
D O I：
10.13336/j.1003-6520.hve.20190685
中图分类号：
学科分类号：
摘要：
After the virtual inertia control is adopted in a wind power grid-connected system, the dynamic stability of grid and wind turbine should be comprehensively analyzed. Friendly grid-connected function of additional control should be improved to enhance its promotion and application value. Firstly, the state equation of the wind power grid-connected system with virtual inertia is established. Secondly, the theory of small signal analysis is used to analyze the effect of virtual inertia control on the system damping characteristics. In order to improve the support function for system's dynamic stability, the dynamic compensating signal is added to an inertia controller based on the extended state observation method. The shafting model of wind turbine is reduced according to integral manifold method, and the influence of virtual inertia control on wind turbine's shafting oscillation is then analyzed. Moreover, a shafting transient energy function is established to provide the principle of parameter design for wind turbine's shafting stabilizer. Finally, a power grid system with high-penetration wind power is established in RTLAB digital-analog hybrid simulation platform. The results show the proposed virtual inertia control significantly improves the swing stability of power angle, as well as decreases the wind turbine's shafting oscillation. © 2020, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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页码：2922 / 2932
页数：10
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