电力系统自动化2017，Vol.41Issue(5)：39-45,7.DOI:10.7500/AEPS20160519005
考虑直流固态断路器通态压降的低压直流配电网最优潮流
Optimal Power Flow of Low-voltage DC Distribution Network Considering On-state Voltage Drop of DC Solid-state Breaker
摘要
Abstract
In actual application of DC solid-state breaker,it is found that its on-state voltage drop cannot be ignored in the power flow of low voltage DC distribution network.Therefore,in order to deal with the optimal power flow (OPF) with this problem in consideration,this paper proposes a steady state model of DC solid-state breaker which contains only continuous variables.This model makes it possible to solve an OPF problem with existing methods conveniently.Based on the RT-Lab simulation results and an analysis of the DC distribution power flow calculations of different voltage levels,it is proved that the voltage drop of DC solid-state breakers cannot be ignored for the low-voltage DC distribution network.Otherwise,it will lead to large errors in voltage profile and power calculations,which will affect system operation safety if it gets serious.What's more,based on the RT-Lab simulation platform,the control effect of OPF in low-voltage DC distribution network is verified by two cases,i.e.one with and one without the consideration of the voltage drop of DC solid state breaker.Simulation results show that in the OPF of DC low-voltage distribution network,considering the on-state voltage drop of a DC solid state breaker is necessary,and the OPF command obtained can reliably control system to maintain it within the feasible region.关键词
低压直流配电网/通态压降/直流固态断路器/最优潮流Key words
low-voltage DC distribution network/on-state voltage drop/DC solid state breaker/optimal power flow引用本文复制引用
马骏超,江全元,赵宇明..考虑直流固态断路器通态压降的低压直流配电网最优潮流[J].电力系统自动化,2017,41(5):39-45,7.基金项目
国家高技术研究发展计划(863计划)资助项目(2013AA050104).This work is supported by National High Technology Research and Development Program of China (863 Program)(No.2013AA050104). （863计划）
