Frequency Control in Isolated/Islanded Microgrids Through Voltage Regulation
Frequency Control in Isolated/Islanded Microgrids Through Voltage Regulation
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DOI：
10.1109/tsg.2015.2479576
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发表时间：
2017-05-01
影响因子：
9.6
通讯作者：
Bhattacharya, Kankar
中科院分区：
文献类型：
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作者：
Farrokhabadi, Mostafa;Canizares, Claudio A.;Bhattacharya, Kankar
本文提出了一种通过电压调节的孤立/孤岛微电网频率控制机制。所提出的方案利用了负载电压对工作电压的敏感性，可以很容易地用于各种类型的隔离微电网。所提出的控制器提供了各种优点，例如允许在隔离/孤岛微电网中集成显著水平的间歇性可再生资源，而不需要大型储能系统，提供快速平滑的频率调节，没有稳态误差，无论发电机控制机制如何。该控制器不需要额外的通信基础设施，仅使用本地电压和频率作为反馈。在PSCAD/EMTDC软件环境下，基于一个实际的微电网测试系统，通过各种仿真研究对控制器的性能进行了评估和验证，并利用小扰动稳定性分析证明了所提出的控制器在系统阻尼方面的积极作用。
This paper presents a frequency control mechanism for an isolated/islanded microgrid through voltage regulation. The proposed scheme makes use of the load voltage sensitivity to operating voltages and can be easily adopted for various types of isolated microgrids. The proposed controller offers various advantages, such as allowing the integration of significant levels of intermittent renewable resources in isolated/islanded microgrids without the need for large energy storage systems, providing fast and smooth frequency regulation with no steady-state error, regardless of the generator control mechanism. The controller requires no extra communication infrastructure, and only local voltage and frequency is used as feedback. The performance of the controller is evaluated and validated through various simulation studies in the PSCAD/EMTDC software environment based on a realistic microgrid test system, using small-perturbation stability analysis to demonstrate the positive effect of the proposed controller in system damping.