通过模型参考控制实现柴油-风系统中保证惯性响应的备用措施
Provision for Guaranteed Inertial Response in Diesel-Wind Systems via Model Reference Control
AI总结：
本文提出一种基于模型参考控制的惯性模拟策略，用于柴油-风系统，通过精确模拟所需惯性实现频率响应优化，考虑参数不确定性并根据不同运行点配置控制器。
摘要：
频率性能一直是孤岛微电网的关键问题。一方面，大多数分布式能源资源（DER）是通过换流器接口的，不具有固有的频率响应能力。另一方面，当前的惯性模拟方法无法提供保证的响应。本文提出了一种基于模型参考控制的惯性模拟策略，用于柴油-风系统。通过该策略可以精确模拟所需的惯性。一个具有参数惯性的典型频率响应模型被设定为参考模型。在特定位置的测量提供有关作用在柴油-风系统上的扰动信息，以供参考模型使用。目标是使柴油发电机的速度跟踪参考模型，从而实现所需的惯性响应。此外，还将考虑多边形参数不确定性。根据不同的运行点，控制器策略以不同方式配置。参考模型的参数被安排以确保在预定义的最坏情况下具有足够的频率响应。控制器在非线性三相柴油-风系统供电的微电网中使用Simulink软件平台实现。结果表明，可以精确模拟合成惯性，并实现了足够的频率响应。
英文摘要：
Frequency performance has been a crucial issue for islanded microgrids. On the one hand, most distributed energy resources (DER) 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 pre-defined 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.
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