Optimal H∞ control without reaching phase with the differential evolution PID based on PSS for multi-machine power system

2015 Intelligent Systems and Computer Vision (ISCV) Pub Date : 2015-05-14 DOI:10.1109/ISACV.2015.7106173

Faiza Dib, I. Boumhidi

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引用次数: 8

Abstract

The objective of this paper is to design a nonlinear robust controller for the multi-machine power systems. We present in this study an optimal H∞ tracking control without reaching phase combined with the Proportional Integral Derivative based on Power System Stabilizer (PID-PSS) optimized by Differential Evolution algorithm. To eliminate the tradeoffs between the H∞ tracking performance and the high gain at the control input, we have defined a new method based on the modified output tracking error by using the exponential function. The Differential Evolution algorithm is used in this study to find the optimal values of the three parameters (Kp, Ki, Kd) of (PID-PSS) and also used to tune the exponential function of the tracking error. The proposed approach is designed to eliminate completely the reaching phase and to enhance the stability and the dynamic response of the multi-machine power system. In order to test the effectiveness of the proposed method, the simulation results show the damping of the oscillations of the angle and angular speed with reduced overshoots and quick settling time.

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基于PSS的多机电力系统差分进化PID无相位最优H∞控制

本文的目的是为多机电力系统设计一种非线性鲁棒控制器。本文提出了一种基于微分进化算法优化的电力系统稳定器(PID-PSS)不达相的最优H∞跟踪控制与比例积分导数相结合的方法。为了消除H∞跟踪性能与控制输入高增益之间的权衡，我们定义了一种基于指数函数修正输出跟踪误差的新方法。本文采用差分进化算法求出PID-PSS的三个参数Kp、Ki、Kd的最优值，并对跟踪误差的指数函数进行调整。该方法旨在完全消除到达相位，提高多机电力系统的稳定性和动态响应。为了验证该方法的有效性，仿真结果表明，该方法对角度和角速度的振荡有较好的抑制作用，且超调量减少，沉降时间短。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2015 Intelligent Systems and Computer Vision (ISCV)

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