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首页> 外文期刊>Electric power systems research >Frequency response enhancement of an AC micro-grid has renewable energy resources based generators using inertia controller
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Frequency response enhancement of an AC micro-grid has renewable energy resources based generators using inertia controller

机译：AC微电网的频率响应增强具有使用惯性控制器的可再生能源基于发电机的发电机

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摘要

Since low inertia has drawbacks on the frequency response and stability of AC micro-grids, availability of sufficient inertia with high penetration of renewable energy sources, has recently become a topic of wide concern. To tackle the problems of low inertia operation, most research is focused on using of an energy storage system (ESS) or de-loading of the renewable generation units. However, these techniques have economic problems due to investment in extra elements or reduction of the system productivity. A new inertia controller that depends on the inherent system's elements, such as the kinetic energy stored in wind turbine and the high bandwidth of interface converter, is proposed. The controller is applied on an AC micro-grid consisting of a thermal power plant and a doubly-fed induction generator based wind turbine. To ensure the validity of the proposed technique, different simulation cases such as load disturbance, wind speed variation, and three-phase fault are performed using MATLAB/ Simulink platform. The results are compared with the responses of two other AC micro-grids operate under the same conditions. The suggested controller successfully enhances the micro-grid frequency response with less frequency nadir and less rate of change of frequency. Eventually, the mathematical description of the proposed controller effect on the inertia of the WECS and the inertia of the micro-grid is deduced.
机译：由于低惯性对AC微电网的频率响应和稳定性具有缺点，因此最近可再生能源的高惯性惯性的可用性，最近成为广泛关注的话题。为了解决低惯性操作的问题，大多数研究专注于使用能量存储系统（ESS）或可再生生成单位的解荷。然而，由于投资额外的元素或减少系统生产率，这些技术具有经济问题。提出了一种依赖于固有的系统元素的新惯性控制器，例如存储在风力涡轮机中的动能和接口转换器的高带宽。控制器应用于由热电厂和基于双馈感应发电机的风力发电机组成的AC微电网。为了确保所提出的技术的有效性，使用Matlab / Simulink平台执行不同的仿真情况，例如负载干扰，风速变化和三相故障。将结果与另外两种AC微电网的响应进行比较，在相同条件下运行。建议的控制器通过较少的频率Nadir和较少的频率变化率成功增强了微电网频率响应。最终，推导出对WECs惯性和微网的惯性的所提出的控制器效应的数学描述。

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