Robust design of dynamic compensator for HV AC power system

Proceedings of the Twenty-Second Annual North American Power Symposium Pub Date : 1990-10-15 DOI:10.1109/NAPS.1990.151349

M. A. Choudry, K. Lateef

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引用次数: 4

Abstract

The authors present a method to design a robust dynamic compensator for reactive power modulation to improve the dynamic performance of high voltage AC power systems. The effect of nonlinear load on parameters of a dynamic compensator for reactive power modulation using a static VAr compensator (SVC) is investigated. The values of gain and zero of the dynamic compensator, which assign the same complex-conjugate eigenvalues corresponding to electromechanical oscillations, are plotted at different values of load characteristics. The robust dynamic compensator is designed using closed-loop eigenvalue sensitivity with respect to the load characteristics. The rotor speed deviation of the synchronous generator is used as an input signal to the dynamic compensator. The output of the dynamic compensator is used as a stabilizing signal to the SVC. Eigenvalue analysis and simulation results show that a dynamic compensator designed at a constant impedance load model may lead to system instability at a constant active power load. However a robust dynamic compensator improves the system response over a wide range of load characteristics.<>

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高压交流电力系统动态补偿器的鲁棒设计

为了提高高压交流电力系统的动态性能，提出了一种鲁棒无功调制动态补偿器的设计方法。研究了非线性负载对静态无功补偿器(SVC)无功调制动态补偿器参数的影响。动态补偿器的增益值和零值在负载特性的不同值处被绘制出来，它们与机电振荡对应相同的复共轭特征值。利用闭环特征值对负载特性的灵敏度设计了鲁棒动态补偿器。同步发电机的转子转速偏差作为动态补偿器的输入信号。动态补偿器的输出作为SVC的稳定信号。特征值分析和仿真结果表明，在恒阻抗负载模型下设计的动态补偿器可能导致系统在恒有功负载下失稳。然而，鲁棒动态补偿器改善了系统在大范围负载特性下的响应。

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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Proceedings of the Twenty-Second Annual North American Power Symposium

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