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首页> 外文期刊>International journal of electrical and power engineering >Design of a Robust Multivariable Controller for an AC-VSC-HVDC System
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Design of a Robust Multivariable Controller for an AC-VSC-HVDC System

机译：AC-VSC-HVDC系统的鲁棒多变量控制器设计

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摘要

In this study, a Voltage Source Converter based High Voltage Direct Current (VSC-HVDC) transmission link is considered for the development of a multivariable robust controller to stabilize the AC-VSC-HVDC power system. To maintain the dc voltage and control the active and reactive power at the converter and inverter stations simultaneously a robust H. control design methodology is adopted here. For designing the controller output feedback quantities like the converter side dc voltage and reactive power and the inverter side active and reactive power are obtained and used to satisfy an and H. norm of the closed loop transfer function matrix. The proposed controller is evaluated for different power system operating conditions like the three-phase short-circuits on the converter and inverter buses, short-circuit on the dc line, loading changes, etc. and its performance show better results than the earlier used PI controllers in respect of the reduction of overshoots, faster settling times and improved damping for the electromechanical oscillations of the generators.
机译：在这项研究中，考虑使用基于电压源转换器的高压直流（VSC-HVDC）传输链路来开发用于稳定AC-VSC-HVDC电力系统的多变量鲁棒控制器。为了保持直流电压并同时控制换流站和逆变站的有功功率和无功功率，此处采用了一种可靠的H.控制设计方法。为了设计控制器输出反馈量，例如转换器侧的直流电压和无功功率，以及逆变器侧的有功和无功功率，并将其用于满足闭环传递函数矩阵的和规范。拟议的控制器针对不同的电力系统运行条件进行了评估，例如转换器和逆变器总线上的三相短路，直流线路上的短路，负载变化等，其性能比早期使用的PI更好。减少过冲，更快的建立时间和改善发电机机电振荡的阻尼方面的控制器。

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