Sub-synchronous interaction and its suppression measurement caused by grid-integration of DFIG-based wind farms using probabilistic method

被引：0
|
作者：
Bian X. [1 ]
Shi L. [1 ]
Zhou Q. [2 ]
Fu Y. [1 ]
机构：
[1] School of Electric Power Engineering, Shanghai University of Electric Power, Shanghai
[2] Shanghai Lightning Protection Center, Shanghai
来源：
Shi, Lei (shilei0913@126.com) | 1600年 / Science Press卷 / 42期
关键词：
Additional damping controller; Doubly fed wind induction generator; Modal analysis; Probabilistic damping ratio; Static var compensation; Sub-synchronous interaction; Time domain simulation;
D O I：
10.13336/j.1003-6520.hve.20160907006
中图分类号：
学科分类号：
摘要：
The sub-synchronous oscillation (SSO) in the form of sub-synchronous control interaction (SSCI) may appear under small perturbation while doubly fed wind induction generator (DFIG) is connected to power grid via series compensation. The variation of the system operating conditions will affect the SSCI. Considering the random uncertainties of wind farm output, synchronous generators output, and stochastic fluctuations of loads in the power system, we applied a probabilistic method for the first time to study SSO statistical attribute in the system with the wind farms integrated under multi-operating conditions, and utilized participation factors to analyze the SSCI modes. Based on the additional damping controller of static var compensator (SVC), a suppression measure against SSCI is proposed to study the damping torque which is provided to the corresponding oscillation modes for improving the damping character in the system. Time domain simulation and probabilistic sub-synchronous stability research are illustrated based on a test system with DFIG-based wind farm integrated. The results show that SVC in the presence of an additional damping controller can provide extra damping for the system oscillation modes, the probabilistic density function of damping constant moves to the left-half plane, and the value of probabilistic damping ratio is increased greatly, which means the dynamic stability is much improved. The effectiveness of the sub-synchronous suppression measure is also verified by the results of the time-domain simulation. © 2016, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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页码：2740 / 2747
页数：7
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