Coordination control for multi-voltage-level dc grid based on the dc-dc converters

Coordination control for multi-voltage-level dc grid based on the dc-dc converters
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基于DC-DC变换器的多电压等级直流电网协调控制

DOI:
10.1016/j.epsr.2019.106050
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发表时间:
2020
影响因子:
3.9
通讯作者:
Liu Zhijie
Liu Zhijie
中科院分区:
工程技术3区
文献类型:
--
作者:
Sun Kaiqi;Li Ke-Jun;Wang Meiyan;Tian Guanyu;Wang Zhuo-di;Liu Zhijie

文献摘要

相似文献

直流-直流转换器正在成为未来直流输电网络的关键设备。本文开发了一种开关模式控制和一种 DC-DC 协调控制,用于 DC-DC 变换器在多电压等级直流电网中的协调运行。开关模式控制是 DC-DC 转换器上的本地控制器,用于实现 DC-DC 工作模式的自动切换。 DC-DC协调控制是一种基于开关模式控制的先进控制。通过DC-DC协调控制,可以将一个直流电网的不平衡功率优化分配到其他电网,以避免严重的功率波动事件。仿真结果证明了开关模式控制和 DC-DC 协调控制的性能。
Dc–dc converters are emerging as a key device for future dc transmission networks. This paper develops a switch mode control and a dc–dc coordination control for dc–dc converters’ coordinated operation in the multi-voltage-level dc grid. The switch mode control is a local controller on the dc–dc converter to enable the automatic switch of the dc–dc operation mode. The dc–dc coordination control is an advanced control based on the switch mode control. With the dc–dc coordination control, unbalanced power from one dc grid could be optimally distributed to other grids, in order to avoid serious power fluctuation events. Simulation results are provided to demonstrate the performance of the switch mode control and dc–dc coordination control.