现代电力2017，Vol.34Issue(1)：69-75,7.
面向智能直流配网的高压大容量直流变压器控制策略研究
Control Strategy of High-voltage Large-capacity DC Transformer Applied in the Intelligent DC Distribution Network
摘要
Abstract
In this paper,input-series-output-parallel multiple modules DC transformer with high voltage and large capaci-ty is used based on the CLLC resonant converter,which provides a variety of ports for the DC load and distributed power supply at low-voltage DC side.Compared with the traditional transformers,the proposed DC transformers is helpful for distributed power consume,and improves the quality of electric energy.In this paper,the relationship be-tween the output power,the phase-shifting angle and output voltage in the single module is analyzed,a control strategy is proposed for the power balancing by using phase-shifting an-gle.In addition,a bidirectional power flow control scheme is presented,which can achieve high efficient and flexible access of distribution resources.In the end,the simulation are carried out based on PSCAD.关键词
直流配电网/大容量直流变压器/软开关/功率均衡/双向潮流控制Key words
DC power distribution network/large-capacity DC transformer/soft switching/power balance/bidirec-tional power flow control分类
信息技术与安全科学引用本文复制引用
李琳,张琳..面向智能直流配网的高压大容量直流变压器控制策略研究[J].现代电力,2017,34(1):69-75,7.基金项目
国家自然科学基金项目(51277064) （51277064）
国家电网公司科技项目(SGRI-DL-71-15-005) （SGRI-DL-71-15-005）
