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Large-Scale PV Plant With a Robust Controller Considering Power Oscillation Damping

机译:考虑功率振荡阻尼的具有鲁棒控制器的大型光伏电站

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摘要

Transmission voltage-level photovoltaic (PV) plants are becoming reality in many developed and developing countries around the world. Studies suggest that large-scale PV plants could have either positive or negative influence on low-frequency oscillation (LFO) depending on their locations and sizes. Given the fact that these plants cannot be placed in ideal locations to minimize their impact on LFO, it is important to consider designing a damping controller for flawless integration. In this paper, a minimax linear quadratic Gaussian-based power oscillation damper (POD) for a large-scale PV plant is proposed for interarea oscillation damping. A benchmark power system prone to power system oscillations is used to demonstrate the damping performance of the designed controller considering feedback signal transmission delay. The performance of the designed controller is evaluated under different operating conditions as compared to the classical POD at PV plant. Simulation results demonstrate that the proposed controller for a PV plant provides sufficient damping to the interarea mode for a wide range of operating conditions.
机译:传输电压级光伏(PV)工厂在世界上许多发达国家和发展中国家都已成为现实。研究表明,大型光伏电站可能会对低频振荡(LFO)产生正面或负面影响,具体取决于它们的位置和大小。鉴于无法将这些设备放置在理想​​的位置以最大程度地减少它们对LFO的影响,因此考虑设计一个无缺陷集成的阻尼控制器非常重要。本文提出了一种用于大型光伏电站的最小极大线性二次高斯功率振荡阻尼器(POD),用于区域间振荡阻尼。使用易于发生电力系统振荡的基准电力系统来说明考虑反馈信号传输延迟的设计控制器的阻尼性能。与光伏电站的传统POD相比,在不同的操作条件下评估了设计控制器的性能。仿真结果表明,所提出的用于光伏电站的控制器可为多种工作条件下的区域间模式提供足够的阻尼。

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