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Provision for Guaranteed Inertial Response in Diesel-Wind Systems via Model Reference Control

机译：通过模型参考控制为柴油风系统中的惯性响应提供保证

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摘要

Frequency performance has been a crucial issue for islanded microgrids. On the one hand, most distributed energy resources are converter-interfaced and do not inherently respond to frequency variations. On the other hand, current inertia emulation approach cannot provide guaranteed response. In this paper, a model reference control based inertia emulation strategy is proposed for diesel-wind systems. Desired inertia can be precisely emulated through the proposed strategy. A typical frequency response model with parametric inertia is set to be the reference model. A measurement at a specific location delivers the information about the disturbance acting on the diesel-wind system to the reference model. The objective is for the speed of the diesel generator to track the reference so that the desired inertial response is realized. In addition, polytopic parameter uncertainty will be considered. The control strategy is configured in different ways according to different operating points. The parameters of the reference model are scheduled to ensure adequate frequency response under a predefined worst case. The controller is implemented in a nonlinear three-phase diesel-wind system fed microgrid using the Simulink software platform. The results show that exact synthetic inertia can be emulated and adequate frequency response is achieved.
机译：频率性能一直是孤岛微电网的关键问题。一方面，大多数分布式能源都是通过转换器接口的，并不固有地响应频率变化。另一方面，当前的惯性仿真方法不能提供保证的响应。本文提出了一种基于模型参考控制的惯性仿真策略，用于柴油机风系统。通过所提出的策略可以精确地模拟所需的惯性。将具有参数惯性的典型频率响应模型设置为参考模型。在特定位置进行的测量会将有关作用在柴油机风系统上的干扰的信息传递给参考模型。目的是使柴油发电机的速度跟踪参考值，以便实现所需的惯性响应。另外，将考虑多参数参数不确定性。根据不同的工作点，以不同的方式配置控制策略。计划参考模型的参数，以确保在预定义的最坏情况下具有足够的频率响应。该控制器使用Simulink软件平台在由微电网供电的非线性三相柴油机风系统中实现。结果表明，可以模拟精确的合成惯量并获得足够的频率响应。

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