高电压技术2018，Vol.44Issue(2)：664-672,9.DOI:10.13336/j.1003-6520.hve.20180131042
平抑交直流混合配电系统功率波动的协调运行控制策略
Coordinated Operation Control Strategy of Power Fluctuation in AC/DC Hybrid Distribution System
摘要
Abstract
In order to suppress the active power fluctuations of AC/DC hybrid distribution system,and ensure the safety and stability of the system.Firstly,we compared and analyzed three kinds of topological structures,which are suitable for AC/DC hybrid power distribution system.Moreover,we selected the two-terminal topology with better controllable performances and determined,the voltage level according to the load demand.Secondly,we described the suppression method of DC bus voltage fluctuation,and analyzed the coordinated control strategy of the power distribution system.Furthermore,we proposed a control strategy of the energy storage system combined with the converter station,and put forward definition of indicators and theoretical derivation.Finally,we established a simulation model in the PSCAD/EMTDC software to simulate the steady-state system,including coordinated control of energy storage system.Based on the coordinated operation control strategy between the energy storage system and the converter station,we compared and analyzed the fault condition in AC/DC hybrid power distribution system.The simulation results show that using the energy control strategy can suppress the active power fluctuation caused by the fault condition in the AC/DC hybrid distribution system with a large amount of distributed power supply and energy storage.When the power is frequently switched,the control strategy can respond quickly,reduce the requirements of protective equipment,and ensurethe stable operation of the system.The coordinated operation control strategy between the energy storage system and theconverter station can be used as an engineering scheme to suppress the active power fluctuation of AC/DC hybrid power distribution system.关键词
交直流混合配电系统/拓扑结构/电压等级/功率波动/电压控制/储能系统/协调运行控制策略Key words
AC/DC hybrid distribution system/topology/voltage level/power fluctuation/voltage control/energy storage system/coordinated operation control strategy引用本文复制引用
唐梦婷,王维庆,李永东,李贵彬..平抑交直流混合配电系统功率波动的协调运行控制策略[J].高电压技术,2018,44(2):664-672,9.基金项目
国家自然科学基金(51667020).Project supported by National Natural Science Foundation of China (51667020). （51667020）
