期刊论文

Multi-mode Coordination Control Strategy for AC/DC Hybrid Micro-grid Converter

中文

电力系统及其自动化学报

1003-8930

2017

29

9

114-121

10.3969/j.issn.1003-8930.2017.09.019

本校为第一机构

交直流混合微网含有不同类型的微源,分别建立了各个微源的并网接口控制模型。对双向变流器下垂控制曲线进行改进,当双向变流器变换功率很小时,其仍然处于停机模式,减少了电力电子器件不必要动作带来的谐波。在分析微源变流器不同运行模式的基础上,提出了一种基于直流母线电压与微网能量管理的协调运行控制策略。该控制策略综合考虑了直流母线的电压偏差、微网功率缺额、蓄电池的荷电状态等因素,能够实现交直流微网间的功率平衡,提高系统稳定性、可控性,适用于交直流微网的不同模式运行控制。仿真验证了所提控制策略的有效性和可行性。

Considering that the AC/DC hybrid micro-grid contains different types of micro-sources,grid-connected in?terface control models are established for each micro-source. The droop control curve is further modified for a bi-direc?tional converter,i.e.,when the conversion power of the converter is very small,it is still kept in a shutdown mode, which reduces the harmonics brought by the unnecessary action of power electronic devices. Based on the analysis of dif?ferent operation modes of micro-source converter,a coordination control strategy based on DC bus voltage and micro-grid energy management ...