南方电网技术2025，Vol.19Issue(8)：64-71,8.DOI:10.13648/j.cnki.issn1674-0629.2025.08.007
考虑VSC容量约束的直流配电网线性潮流算法
Linear Power Flow Algorithm of DC Distribution Networks Considering VSC Capacity Constraints
摘要
Abstract
Voltage source converters(VSCs)-based DC distribution networks(DCDNs)can automatically adjust the control strategy of overloaded VSC to adapt to the variation of renewable energy power,but it brings difficulties to analyze the steady-state performance of DCDNs.A piecewise linear power flow(PLPF)algorithm is proposed to quickly calculate the coupled effect of the power disturbance and VSC control strategy adjustment on steady-state power flow.Firstly,according to the VSC power balance,the critical point of VSC hitting the capacity limit is directly determined and the power variations of each node before VSC control strategy adjustment are obtained.Then,the linear power flow is revised considering the VSC control strategy adjustment.Finally,the linear power flow calculation is performed in each stage before VSC control strategy adjustment,and the steady-state power flow is obtained by using the superposition method.Simulation results show that the proposed PLPF model can directly,quickly,and ac-curately calculate the steady-state power flow distribution of DCDNs.关键词
直流配电网/下垂控制/线性潮流模型/分段模型/电压源换流器Key words
DC distribution network/droop control/linear power flow model/piecewise model/voltage source converter分类
信息技术与安全科学引用本文复制引用
黄学劲,喻松涛,王之谦,罗旭恒,刘贯科,戴喜良..考虑VSC容量约束的直流配电网线性潮流算法[J].南方电网技术,2025,19(8):64-71,8.基金项目
国家重点研发计划资助项目(2022YFE0205100) （2022YFE0205100）
中国南方电网有限责任公司科技项目(031986WP20200031).Supported by the National Key Research and Development Program of China(2022YFE0205100) （031986WP20200031）
the Science and Technology Project of China Southern Power Grid Co.,Ltd.(031986 （）
