A robust control method to improve the performance of a unified power flow controller

被引：30
|
作者：
Vilathgamuwa, M [1 ]
Zhu, X [1 ]
Choi, SS [1 ]
机构：
[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
来源：
ELECTRIC POWER SYSTEMS RESEARCH | 2000年 / 55卷 / 02期
关键词：
unified power flow controller; synchronous voltage source; multi-input-multi-output system;
D O I：
10.1016/S0378-7796(99)00099-1
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The unified power flow controller (UPFC) modeled in synchronous reference frame is investigated for the control of power flow in a transmission system. An ac voltage vector generated by a GTO-based inverter is injected in series with the phase voltage in the transmission line to control real and reactive power flow. A robust H-infinity controller is proposed to regulate line currents in both the shunt and series inverters of the UPFC. The controller ensures robust performance and internal stability of the UPFC against power system disturbances and unstructured parameter variations. Conventional PI control system performance is compared with that based on the proposed scheme to highlight excellent robustness features in the new scheme. (C) 2000 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：103 / 111
页数：9
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