电力系统保护与控制2017，Vol.45Issue(13)：21-26,6.DOI:10.7667/PSPC161002
直流微电网电压等级的选择及其稳定控制策略研究
Research on the voltage level selection and its stability control strategy of DC microgrid
摘要
Abstract
In order to select and determine the DC microgrid voltage level, on the basis of the voltage level for existed DC standards and DC projects, considering the capacity and power supply radius of the microgrid, this paper calculates run loss of the DC microgrid to select the optimal voltage level of the DC bus. For the voltage stability control of DC microgrid, in grid-connected operation, the battery DC/DC converter is used to control the voltage stability of DC bus, and the AC/DC converter is used to control the grid power of DC microgrid. In islanded operation, the battery DC/DC converter is used to control the voltage stability of DC bus, too. The simulation model of DC microgrid in PSCAD/EMTDC is established to verify the voltage stability control strategy on different operation modes. The results show that the control strategy can control DC microgrid voltage stability in the case of PV power and load power fluctuations.关键词
直流微电网/电压等级/电压稳定控制Key words
DC microgrid/voltage level/voltage stability control引用本文复制引用
田龙刚..直流微电网电压等级的选择及其稳定控制策略研究[J].电力系统保护与控制,2017,45(13):21-26,6.基金项目
This work is supported by Key Special Project of Smart Grid Technology and Equipment of National Key R & D Plan (No. 2016YFB0900601).国家重点研发计划智能电网技术与装备重点专项(2016YFB0900601) （No. 2016YFB0900601）
