Design of Fuzzy Delay Compensation Controller Based on Amplitude Compensation Method for Power System with Communication Delay

Abstract

In a networked power system, communication delay in the feedback signal during transmission process can have a detrimental impact on the effectiveness of the power system stabilizer (PSS) in suppressing low-frequency oscillations. To address this problem, a controller design method to compensate for short constant time delays is proposed. The proposed approach utilizes Mamdani fuzzy inference system to design a fuzzy delay compensation damping controller (FDCDC) and establishes control rules based on the amplitude compensation method. The proposed FDCDC takes the delayed feedback signal as input and generates additional excitation control signal as output. The controller considers the effect of delay on the performance of PSS controller and compensates for the delay through fuzzy output. To evaluate the effectiveness of the proposed FDCDC, a networked power system model is developed using MATLAB Simulink’s SimPowerSystems library and TrueTime 2.0 toolbox. The aim of this study is to investigate the impact of short constant time delay on the performance of PSS controller in a networked environment and to assess the performance of the proposed controller. The simulation results demonstrate that the proposed FDCDC exhibits good adaptability and robustness in compensating for the effect of delay on PSS control.