Coordinated Nonlinear Control of HVDC Supplementary Damping With Generator Excitation for Enhancing Stability of Power System

被引：0
|
作者：
Cong L. [1 ,2 ]
Li X. [1 ]
Xu J. [1 ]
Chen D. [1 ]
机构：
[1] College of Electrical Engineering, Guangxi University, Nanning, 530004, Guangxi Zhuang Autonomous Region
[2] School of Automation and Electrical Engineering, Linyi University, Linyi, 276000, Shandong Province
来源：
Dianwang Jishu/Power System Technology | 2019年 / 43卷 / 01期
基金：
中国国家自然科学基金;
关键词：
DAEBMOHF; Excitation control; HVDC supplementary control; Nonlinear coordinated control; Transient stability;
D O I：
10.13335/j.1000-3673.pst.2017.2846
中图分类号：
学科分类号：
摘要：
HVDC supplementary control usually takes active power or frequency as only objective for modulation and usually considers no coordination with excitation, which results in unsatisfied performance in some cases. To solve this problem, a multi- objective holographic feedback nonlinear control method based on differential algebraic equation (DAEBMOHF) is proposed to coordinate HVDC supplementary damping and generator excitation. In this method, the nonlinear control problem is converted into linear space to be solved by constructing the multi-objective equation conformed to Brunovsky normal form with appropriately designed objective functions. Equivalent map between nonlinear and linear control laws is connected by calculating derivative of the objective functions to realize nonlinear control of objective functions and makes them attain expected stable orbits. A practical controller of a 4-machine 2-area system is designed with the DAEBMOHF method. Simulation results demonstrate that the proposed control method can effectively stabilize rotor angle, frequency and voltage with power and excitation control and improve stability and robustness. © 2019, Power System Technology Press. All right reserved.
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收藏
页码：193 / 199
页数：6
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