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Coordinated Control of Distributed Energy Resources and Conventional Power Plants for Frequency Control of Power Systems

机译：电力系统频率控制的分布式能源与常规电厂的协调控制

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Recently, distributed energy resources (DERs) are becoming more attractive to supply local loads under concept of microgrids. These new parts of the power system have basically different dynamics compared with conventional power plants (CPPs). Some of them do not have any rotating inertia and most of them are connected to the grid by power electronic interfaces. Stability and control of microgrids and the entire power system containing DERs and CPPs is one of the most important challenges of the recent power systems. Interactions between microgrids in grid-connected mode and CPPs should be coordinated to ensure and improve the stability of power system. In this paper, the effect of the increased penetration of DERs on the load frequency problem of power system is studied. Basically, synchronous generators of CPPs determine the dynamic behavior of power system for frequency control and are responsible to compensate load changes of the system. With the high penetration of DERs, these new parts can contribute in the frequency control. It is shown that with appropriate control of DERs in microgrids, the frequency deviation of the power system will decrease and the stability margin can be increased.
机译：最近，在微电网概念下，分布式能源（DERs）越来越有吸引力，可以提供局部负荷。与常规电厂（CPP）相比，电力系统的这些新部件具有基本不同的动力。它们中的一些没有任何旋转惯性，并且大多数通过电力电子接口连接到电网。微电网以及包含DER和CPP的整个电力系统的稳定性和控制是最近电力系统的最重要挑战之一。应协调并网微电网与CPP之间的相互作用，以确保和改善电力系统的稳定性。本文研究了DERs渗透增加对电力系统负载频率问题的影响。基本上，CPP的同步发电机确定用于频率控制的电力系统的动态行为，并负责补偿系统的负载变化。随着DER的高度普及，这些新零件可以为频率控制做出贡献。结果表明，通过适当控制微电网中的DER，可以减小电力系统的频率偏差，并可以增加稳定裕度。

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