首页> 外文期刊>International Journal of Innovative Computing Information and Control >WIDE AREA ROBUST CENTRALIZED PSO-BASED SPECIFIED STRUCTURE H∞ POWER SYSTEM DAMPING CONTROLLER DESIGN CONSIDERING UNCERTAINTIES IN TIME DELAY AND SYSTEM PARAMETERS
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WIDE AREA ROBUST CENTRALIZED PSO-BASED SPECIFIED STRUCTURE H∞ POWER SYSTEM DAMPING CONTROLLER DESIGN CONSIDERING UNCERTAINTIES IN TIME DELAY AND SYSTEM PARAMETERS

机译:基于时滞和系统参数不确定性的广域鲁棒集中式PSO特定结构H∞电力系统阻尼控制器设计

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摘要

It is well known that the time delay due to the wide area phasor measurement may cause a malfunction of wide area centralized control of power system damping controller (PSDC) and system instability eventually. Nevertheless, the uncertainties due to time delay and system parameters have never been considered in the previous researches of PSDC design. To tackle this problem, a wide area robust centralized particle swarm optimization (PSO)-based specified structure H∞ PSDC design taking uncertainties due to communication delay and system parameters into account is proposed in this paper. Without explicit mathematic equations, the inverse input multiplicative model is applied to represent the unstructured uncertainties. The structure of PSDC is the practical 2nd order lead/lag compensator. To automatically tune the control parameters, the optimization based on an enhancement of damping effect and robust stability margin is achieved by PSO. To evaluate the proposed design technique, two examples of robust centralized PSDC, i.e., power system stabilizer and thyristor control series capacitor are demonstrated in a two-area four-machine interconnected power system. Simulation study confirm that the proposed robust centralized PSDC is much superior to the conventional centralized PSDC in terms of stabilizing effect and robustness against uncertainties due to time delay and system parameters.
机译:众所周知,由于广域相量测量引起的时间延迟可能导致电力系统阻尼控制器(PSDC)的广域集中控制的故障,最终导致系统不稳定。然而,由于时间延迟和系统参数的不确定性在PSDC设计的先前研究中从未考虑过。针对这一问题,提出了一种基于广域鲁棒集中式粒子群优化(PSO)的指定结构H∞PSDC设计,该设计考虑了通信延迟和系统参数的不确定性。如果没有明确的数学方程,则应用逆输入乘法模型来表示非结构化不确定性。 PSDC的结构是实用的二阶超前/滞后补偿器。为了自动调整控制参数,PSO实现了基于增强阻尼效果和稳健稳定性余量的优化。为了评估所提出的设计技术,在两区域四机互连电力系统中演示了鲁棒集中式PSDC的两个示例,即电力系统稳定器和晶闸管控制串联电容器。仿真研究证实,所提出的鲁棒集中式PSDC在稳定效果和针对时延和系统参数造成的不确定性方面的鲁棒性方面要远远优于常规集中式PSDC。

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