An improved frequency control method for microgrid in islanded operation

2013 2nd International Symposium on Instrumentation and Measurement, Sensor Network and Automation (IMSNA) Pub Date : 2013-12-01 DOI:10.1109/IMSNA.2013.6743273

Y. You, G. Wang, Chang-hua Zhang, Jing-ru Lian

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引用次数: 14

Abstract

Some existing microgrid frequency control methods imitated traditional power system primary frequency regulation and secondary frequency regulation. Advantages and disadvantages of this imitation are analyzed and an improved frequency error integral regulation method for islanded microgrid operation is proposed in this paper. The proposed control strategy can implement no-error adjustment of microgrid frequency. In order to overcome the drawbacks of low inertia of microgrid, motion equation of rotor of synchronous generator (SG) is supplemented to the proposed frequency control strategy, which can make frequency to reach a new steady state relatively slowly while loads fluctuate rapidly. Therefore, stability of frequency in microgrid is thus improved. Typical operation states of microgrid operated in islanded mode, such as load random fluctuation, are simulated based on MATLAB/Simulink. Simulation studies prove the effectiveness of the proposed frequency control strategy.

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孤岛运行微电网频率控制的改进方法

现有的一些微电网频率控制方法模仿了传统的电力系统一次调频和二次调频。分析了这种模拟方法的优缺点，提出了一种改进的孤岛微电网运行频率误差积分调节方法。该控制策略可以实现微网频率的无误差调节。为了克服微电网惯量低的缺点，将同步发电机转子的运动方程补充到所提出的频率控制策略中，使频率相对较慢地达到新的稳态，而负载波动较快。从而提高了微电网频率的稳定性。基于MATLAB/Simulink对孤岛状态下微电网负荷随机波动等典型运行状态进行了仿真。仿真研究证明了所提频率控制策略的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2013 2nd International Symposium on Instrumentation and Measurement, Sensor Network and Automation (IMSNA)

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