Harmonic Power Sharing With Voltage Distortion Compensation of Droop Controlled Islanded Microgrids
Harmonic Power Sharing With Voltage Distortion Compensation of Droop Controlled Islanded Microgrids
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DOI：
10.1109/tsg.2017.2687058
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发表时间：
2018-09
影响因子：
9.6
通讯作者：
H. Moussa;A. Shahin;Jean-Philippe Martin;B. Nahid-Mobarakeh;S. Pierfederici;N. Moubayed
中科院分区：
文献类型：
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作者：
H. Moussa;A. Shahin;Jean-Philippe Martin;B. Nahid-Mobarakeh;S. Pierfederici;N. Moubayed
谐波被发现对电力系统设备，包括变压器，电容器组，旋转机器等有有害的影响，但是，分布式发电接口转换器（DICs）是能够提高电能质量和系统效率的情况下，增加一个灵活的控制策略。本文描述了非线性负载产生的电压失真，并提出了一种新的谐波下垂控制方法，以减少公共耦合点（PCC）处的电压谐波失真，并在经典频率下垂方法控制的并联孤岛逆变器之间共享谐波功率。其主要目的是有效地补偿谐波电流提请每个DIC提供并联的非线性负载与电压谐波阻尼在PCC。详细说明了谐波下垂器的工作原理。建模和稳定性分析，以确定适当的操作适合的控制参数。仿真和实验结果表明，该算法在实现谐波功率共享和改善在PCC的电压谐波失真的能力。
Harmonics are found to have deleterious effects on power system equipment including transformers, capacitor banks, rotating machines, etc. However, the distributed generation interfacing converters (DICs) are able to improve power quality and system efficiency in case of adding a flexible control strategy. This paper describes the voltage distortion generated by nonlinear loads and proposes a new harmonic droop control to reduce the voltage harmonic distortion at the point of common coupling (PCC) and to share the harmonic power between parallel islanded inverters controlled by classical frequency droop method. The main objective it to effectively compensate the harmonic currents drawn by each DIC to supply the nonlinear loads in parallel with voltage harmonic damping at PCC. The operation principle of the proposed harmonic droop is explained in details. Modeling and stability analysis are developed in order to define the control parameters suitable for proper operation. Simulation and experimental results are presented to show the competence of the proposed algorithm in achieving harmonic power sharing and in improving the voltage harmonic distortion at the PCC.