计及负荷电压静态特性的光储微电网频率控制策略

黄阮明; 王海群; 张铭泽; 李灏恩; 屈靖雅; 赵晶晶

doi:10.16513/j.2096-2185.DE.2010004

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分布式能源 ›› 2020, Vol. 5 ›› Issue (6) : 1-6. DOI: 10.16513/j.2096-2185.DE.2010004

学术研究

计及负荷电压静态特性的光储微电网频率控制策略

黄阮明 ¹ ,
王海群 ¹ ,
张铭泽 ¹ ,
李灏恩 ¹ ,
屈靖雅 ² ,
赵晶晶 ²

作者信息 +

Frequency Control Strategy of Photovoltaic Storage Microgrid Considering Static Load Voltage Characteristics

Author information +

文章历史 +

摘要

光伏渗透率较高的微电网，由于系统惯性降低而造成微电网调频困难。为提高微电网调频能力，在考虑负荷电压静态特性的基础上，提出了电压频率控制(voltage based frequency control, VFC)频率控制策略，该策略通过调节负荷处母线电压改变负荷功率需求以协助微电网频率调节。首先，在DIgSILENT仿真软件中对光储微电网频率控制进行了建模；然后，将频率波动信号进行频域分解，并将高低中调频信号分配给微电网中储能、VFC控制器、柴油机，让其承担不同的调频任务；最后，分析了不同电源的调频能力。仿真结果表明，VFC控制策略能有效提高微电网频率稳定性，延长储能在微电网中的放电时间。

Abstract

In microgrid with high PV penetration, it is difficult to adjust frequency of microgrid due to low system inertia. In order to improve the frequency modulation capability of microgrid, a voltage based frequency control (VFC) frequency control strategy is proposed based on the static characteristics of load voltage. The strategy changes the load power demand by adjusting the bus voltage at the load to assist the frequency regulation of microgrid. Firstly, the frequency control model of optical storage microgrid is established in DIgSILENT simulation software. Then, the frequency fluctuation signal is decomposed in frequency domain, and the high and low frequency modulation signals are distributed to energy storage, VFC controller and diesel engine in microgrid to undertake different frequency modulation tasks. Finally, the frequency modulation ability of different power sources is analyzed. The simulation results show that VFC control strategy can effectively improve the frequency stability of microgrid and prolong the discharge time of energy storage in microgrid.

导出引用

黄阮明, 王海群, 张铭泽, 等. 计及负荷电压静态特性的光储微电网频率控制策略[J]. 分布式能源. 2020, 5(6): 1-6 https://doi.org/10.16513/j.2096-2185.DE.2010004

Ruanming HUANG, Haiqun WANG, Mingze ZHANG, et al. Frequency Control Strategy of Photovoltaic Storage Microgrid Considering Static Load Voltage Characteristics[J]. Distributed Energy Resources. 2020, 5(6): 1-6 https://doi.org/10.16513/j.2096-2185.DE.2010004

中图分类号： TK02

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