Design of Wide Area Damping Controller Based on Fuzzy Control

doi:10.11930/j.issn.10.11930.2015.6.58

Abstract

Abstract: In view of the low frequency oscillations of the interconnected power systems, a method is proposed for designing the excitation controller by using the wide-area feedback signals as additional stability signals. Fuzzy control is applied to compensate the communication time delay during transmission of the wide-area signals. A new method is introduced for determining the fuzzy rules. Firstly, the inputs and expected outputs of fuzzy logic controller are analyzed. Then, the universe of fuzzy sets, membership functions and fuzzy rules are determined based on the relationship between the relevant inputs and outputs, and the fuzzy logic controller is constituted consequently. A four-machine two-area power system is simulated by using Matlab/Simulink software in order to test the performance of the fuzzy control-based wide-area damping controller. Simulation results show that the designed controller can effectively compensate the large time delay and improve the damping of interconnected power system, which verifies the good robustness and adaptability of fuzzy control.

Key words: low frequency oscillations, fuzzy control, wide-area measurement system, wide-area damping control, time delay, power system stability, robustness

CLC Number:

TM712

SUN Lin, LI Tianran, QIAN Junjie, CAI Wei, WU Huaren. Design of Wide Area Damping Controller Based on Fuzzy Control[J]. Electric Power, 2015, 48(6): 58-62.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.10.11930.2015.6.58

https://www.electricpower.com.cn/EN/Y2015/V48/I6/58

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