电力系统自动化2025，Vol.49Issue(6)：176-186,11.DOI:10.7500/AEPS20240105001
计及直流变压器控制模式切换的直流配电网优化运行策略
Optimal Operation Strategy for DC Distribution Network Considering Control Mode Switching of DC Transformer
摘要
Abstract
The DC transformer(DCT)is the key equipment for achieving interconnection of multi-voltage-level DC distribution networks,and its control strategy is crucial for the efficient operation of the system and power quality.This paper proposes an optimal operation strategy for DC distribution network considering control mode switching of DCT.Firstly,the topology and control modes of DCT are introduced,and the voltage-current transfer matrices of DCT ports in various control modes are derived.On this basis,combined with network constraint equations,a simplified model of DC distribution network with DCT is established,and the impact of different control modes of DCT on network operation is analyzed.Then,the DCT port transfer matrices in various control modes are embedded into the power flow calculation equations,and an optimal operation strategy for multi-voltage-level DC distribution network is established with the objective function of minimizing system loss,taking into account the constraints of grid safety operation and energy storage,and the solution process is given.Finally,the effectiveness of the proposed optimal strategy is verified by using a modified IEEE DC distribution network case.关键词
直流变压器/直流配电网/优化运行/控制模式切换Key words
DC transformer(DCT)/DC distribution network/optimal operation/control mode switching引用本文复制引用
周念成,范炳昕,廖建权,周亦尧,王强钢..计及直流变压器控制模式切换的直流配电网优化运行策略[J].电力系统自动化,2025,49(6):176-186,11.基金项目
国家自然科学基金资助项目(52077017). This work is supported by National Natural Science Foundation of China(No.52077017). （52077017）
