交直流混合微网中多台双向换流器的分散协调控制方法

LI Peng

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交直流混合微网中多台双向换流器的分散协调控制方法

更新时间：2025-08-13

- 交直流混合微网中多台双向换流器的分散协调控制方法
- Automation of Electric Power Systems Vol. 42, Issue 22, Pages: 151-158(2018)
- 作者机构：
  
  华北电力大学电气与电子工程学院,河北省,保定市,071003
- 作者简介：
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- DOI：
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- Published：2018
- 稿件说明：
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LI Peng. [J]. Automation of electric power systems, 2018, 42(22): 151-158.
DOI：

LI Peng. [J]. Automation of electric power systems, 2018, 42(22): 151-158. DOI：

摘要

交直流混合微网综合了交流微网和直流微网的优势，为高密度分布式能源接入配电网提供了新的有效途径。交直流混合微网中交直潮流断面由多台AC/DC双向换流器构成，在维持交流区和直流区的功率动态平衡、交流侧频率和直流侧电压恒定等方面起着关键作用。针对多台AC/DC双向换流器的并联运行，基于变步长自适应逆控制理论，提出了一种多台AC/DC双向换流器的分散协调控制方法。该方法兼具了下垂控制与自适应逆控制的优势，既可以使各双向换流器按照额定容量进行有功功率的协调分配，又可以实现对直流母线电压或交流区频率的零误差调节，并获得相较于自适应逆控制更优的动态响应。最后，结合国内首个商业化运营的交直流混合微网示范工程进行仿真实验，验证了所提控制方法的正确性和可行性。

Abstract

The AC/DC hybrid microgrid combines the advantages of AC microgrid and DC microgrid

and provides a more effective way for high-density distributed energy accessing to distribution network. The AC/DC power interface of hybrid microgrid

which is composed of multiple parallel AC/DC converters

plays a key role in maintaining the power dynamic balance of the AC and DC areas and the constant of AC side frequency and DC side voltage. For the parallel operation of multiple AC/DC converters based on the theory of adaptive inverse control with variable step size

this paper presents a decentralized coordinated control method for AC/DC converters. This method combines the advantages of droop control and adaptive inverse control. It can not only make the AC/DC converters distribute the active power in accordance with the rated capacity

but also can realize zero-error adjustment of the DC bus voltage or the AC area frequency

and obtain a better dynamic response than traditional adaptive inverse control. Finally

combined with the demonstration project of the first commercial AC/DC hybrid microgrid in China

the correctness and feasibility of the proposed control method are verified by the simulation experiment.

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