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Design of the PID Controller for Hydro-turbines Based on Optimization Algorithms

Jau-Woei Perng, Yi-Chang Kuo*, and Kuan-Chung Lu
International Journal of Control, Automation, and Systems, vol. 18, no. 7, pp.1758-1770, 2020

Abstract : In this study, multiple objective particle swarm optimization (MOPSO), genetic algorithm, bees, and reinforcement learning (RL) are used to calculate the rise time (tr), integral square-error, integral of time-multiplied squared-error, integral absolute error, and integral of time multiplied by absolute error of the system transfer function and then we use a fuzzy algorithm on MOPSO, GA, bees, and RL based on the frequency sensitivity margin of a water turbine governor to optimize the proportional gain (kp) and integral gain (ki) and calculate the relative collapsing frequency response values. The MOPSO algorithm returned the optimal result. The radial basis function (RBF) neural network curve is obtained from the MOPSO algorithm with three variables (i.e., kp, ki, kd = 0.6 and grid frequency deviations values), and finally we identify and predict three variable values near the RBF neural network curve through deep learning. The result of the grid frequency deviation is close to 0, and the gain response time is better for damping the frequency oscillations in different operating conditions.

Keyword : Bees, deep learning, frequency sensitivity, genetic algorithm, integral absolute error, integral gain, integral of time multiplied by absolute error, integral of time-multiplied-squared-error

 
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