Provision for Guaranteed Inertial Response in Diesel-Wind Systems via Model Reference Control
Provision for Guaranteed Inertial Response in Diesel-Wind Systems via Model Reference Control
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DOI：
10.1109/tpwrs.2018.2827205
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发表时间：
2018-04
影响因子：
6.6
通讯作者：
Yichen Zhang;A. Melin;S. Djouadi;M. Olama;K. Tomsovic
中科院分区：
文献类型：
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作者：
Yichen Zhang;A. Melin;S. Djouadi;M. Olama;K. Tomsovic
频率性能一直是孤岛微电网的关键问题。一方面，大多数分布式能源是转换器接口的，并且本身不响应频率变化。另一方面，目前的惯性仿真方法不能提供有保证的响应。提出了一种基于模型参考控制的柴油机-风力发电系统惯性仿真策略。所需的惯性可以通过所提出的策略精确地模拟。以具有参数惯性的典型频率响应模型为参考模型。在特定位置的测量将关于作用于柴油-风力系统的干扰的信息传递到参考模型。目标是使柴油发电机的速度跟踪参考，从而实现期望的惯性响应。此外，将考虑多面体参数的不确定性。根据不同的工作点，以不同的方式配置控制策略。对参考模型的参数进行调度，以确保在预定义的最差情况下有足够的频率响应。该控制器在非线性三相柴油-风力发电系统的微电网使用Simulink软件平台实现。仿真结果表明，该方法可以准确地仿真出系统的综合转动惯量，并具有良好的频率响应特性。
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.