Design of Robust UPFC Controller Using H∞ Control Theory in Electric Power System | Science Publications

American Journal of Applied Sciences

Seyed A. Taher¹  Ali Abdolalipour¹  Shahabeddin Akbari¹  Reza Hematti¹ 

关键词: Unified Power Flow Controller (UPFC);    Flexible AC Transmission Systems (FACTS);    power system oscillation;    H∞ loop-shaping;   

DOI  :  10.3844/ajassp.2008.980.989

学科分类：自然科学（综合）

来源: Science Publications

【 摘 要 】

An industrial plant, such a power system, always contains parametric uncertainties. In the design of a controller the uncertainties have to be considered. Otherwise, if the real plant differs from the assumed plant model, a controller, designed based on classical controller design approaches, may not ensure the stability of the overall system. In this paper design of robust control for the UPFC controllers including power - flow and DC voltage regulator, using a H_∞ loop-shaping design via a normalized coprime factorization approach, where loop-shape refers to magnitude of the loop transfer function L = GK as function of frequency is presented. As an example, we have designed a case for the system to compare the proposed method with a conventional method (classical P-I controller). AS the results of the linear and nonlinear simulations, the validity of the proposed method has been confirmed.

【 授权许可】

Unknown