可实现运行模式灵活切换的小型微网实验系统

YANG Zhangang; WANG Chengshan; CHE Yanbo

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可实现运行模式灵活切换的小型微网实验系统

更新时间：2025-08-13

- 可实现运行模式灵活切换的小型微网实验系统
- Automation of Electric Power Systems Vol. 33, Issue 14, Pages: 89-92(2009)
- 作者机构：
  
  天津大学电力系统仿真控制教育部重点实验室,天津市,300072
- 作者简介：
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- Published：2009
- 稿件说明：
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YANG Zhangang, WANG Chengshan, CHE Yanbo. [J]. Automation of electric power systems, 2009, 33(14): 89-92.
DOI：

YANG Zhangang, WANG Chengshan, CHE Yanbo. [J]. Automation of electric power systems, 2009, 33(14): 89-92. DOI：

摘要

为了能够对微网的运行特性进行深入的理论和实验研究，建立了一个小型实验室微网系统。该系统中的分布式电源采用光伏模拟单元和风机模拟单元，通过电力电子变换装置并入微网;系统以蓄电池为储能装置，并通过双向逆变器并入微网，用以维持微网的暂态功率平衡。当微网联网运行时，以外电网电压和频率为参考，蓄电池双向逆变器、光伏并网逆变器和风机并网逆变器采用恒功率控制;孤岛运行时，双向逆变器的控制策略切换为恒电压、恒频率控制，用以提供微网电压和频率参考。实验结果表明，该系统可以稳定地工作在联网模式和孤岛模式，并可实现二者之间的平滑切换，提高了能量供给的可靠性。

Abstract

To demonstrate advanced distributed generation system integration strategies， a single-phase laboratory-scale microgrid system is set up. Two micro sources are included in the microgrid， a photovoltaic simulator and a wind turbine simulator. They are connected to the AC grid via a flexible power electronic interface respectively. To maintain stable operation， a battery energy storage system is connected via a bi-directional inverter in the microgrid. In the grid-connected mode， both micro source inverters and bi-directional inverter are in the constant power control mode. In the islanded mode， the bi-directional inverter switches to the voltage and frequency control mode by absorbing or releasing energy. Experimental results show that the laboratory-scale microgrid system can operate in either grid-connected or islanded mode， with a seamless transfer from one to another， and hence increase the reliability of energy supplies.

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