A robust decentralized load frequency controller for interconnected power systems

被引：179

作者：

Dong, Lili ^{[1
]}

Zhang, Yao ^{[1
]}

Gao, Zhiqiang ^{[1
]}

机构：

[1] Cleveland State Univ, Dept Elect & Comp Engn, Cleveland, OH 44115 USA

来源：

ISA TRANSACTIONS | 2012年 / 51卷 / 03期

关键词：

Load Frequency Control (LFC); Active Disturbance Rejection Control (ADRC); Area Control Error (ACE); Inter-connected power system; Frequency-domain analyses; Stability; Robustness; COMMUNICATION; GENERATION; DESIGN;

D O I：

10.1016/j.isatra.2012.02.004

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

A novel design of a robust decentralized load frequency control (LFC) algorithm is proposed for an interconnected three-area power system, for the purpose of regulating area control error (ACE) in the presence of system uncertainties and external disturbances. The design is based on the concept of active disturbance rejection control (ADRC). Estimating and mitigating the total effect of various uncertainties in real time, ADRC is particularly effective against a wide range of parameter variations, model uncertainties, and large disturbances. Furthermore, with only two tuning parameters, the controller provides a simple and easy-to-use solution to complex engineering problems in practice. Here, an ADRC-based LFC solution is developed for systems with turbines of various types, such as non-reheat, reheat, and hydraulic. The simulation results verified the effectiveness of the ADRC, in comparison with an existing PI-type controller tuned via genetic algorithm linear matrix inequalities (GALMIs). The comparison results show the superiority of the proposed solution. Moreover, the stability and robustness of the closed-loop system is studied using frequency-domain analysis. (c) 2012 ISA. Published by Elsevier Ltd. All rights reserved.

引用

页码：410 / 419

页数：10

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