交直流混合微网优化配置研究

丁明; 史盛亮; 刘新宇; 潘浩; 周金辉; 余杰; 顾一丰

引用本文:	丁明,史盛亮,刘新宇,等.交直流混合微网优化配置研究[J].电力系统保护与控制,2018,46(14):17-25.
	DING Ming,SHI Shengliang,LIU Xinyu,et al.Study of optimal configuration of a hybrid AC/DC microgrid[J].Power System Protection and Control,2018,46(14):17-25

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交直流混合微网优化配置研究
丁明¹,史盛亮¹,刘新宇¹,潘浩¹,周金辉²,余杰³,顾一丰⁴
(1.安徽省新能源利用与节能重点实验室(合肥工业大学)，安徽合肥 230009;2.国网浙江省电力公司电力科学研究院，浙江杭州 310014;3.国网浙江省电力公司绍兴供电公司，浙江绍兴 312000; 4.国网浙江绍兴市上虞区供电公司，浙江上虞 312314)

摘要:

交直流混合微网结合了交流微网与直流微网的优点，其优化配置问题是目前研究的热点。围绕包含风力发电、光伏发电和储能电池的交直流混合微网系统，综合考虑了换流器配置、设备的随机故障、微网的运行模式、子微网间的交互功率和微网与主网的交互功率波动约束，建立了以安装成本、运行成本和可靠性成本之和为目标的优化模型，运用混合整数线性规划求解。讨论了不同直流负荷比率下的合理配置，并与传统交流微网进行了对比分析。算例表明:交直流混合微网在成本和可靠性方面有一定优势，并随着直流负荷比率的增大优势更加明显。

关键词: 交直流混合微网换流器随机故障直流负荷比率混合整数线性规划优化配置

DOI：10.7667/PSPC171002

分类号:

基金项目:国家高技术研究发展计划(863计划)资助项目(2015AA050104)

Study of optimal configuration of a hybrid AC/DC microgrid

DING Ming¹,SHI Shengliang¹,LIU Xinyu¹,PAN Hao¹,ZHOU Jinhui²,YU Jie³,GU Yifeng⁴

(1. Anhui New Energy Utilization and Energy Saving Laboratory (Hefei University of Technology), Hefei 230009, China;2. State Grid Zhejiang Electric Power Research Institute, Hangzhou 310014, China;3. Shaoxing Power Supply Company, State Grid Zhejiang Electric Power Company, Shaoxing 312000, China;4. State Grid Zhejiang Shangyu Region Power Supply Company, Shangyu 312314, China)

Abstract:

Hybrid AC/DC microgrid combines the advantages of AC microgrid and DC microgrid, its optimal planning problem is a hotspot of current research. Taking into account the inverter configuration, stochastic failure of equipment, operating state of microgrid, constraints of interactive power fluctuation between submicrogrid and the fluctuation between microgrid and main grid, this paper establishes an optimal planning model in hybrid AC/DC microgrid system with wind turbine generators, photovoltaic generation and energy storage battery. In this model, mixed integer programming method is used to solve the objective function with the summation of installation cost, operation cost and reliability cost. Optimal planning is carried out under different DC load ratios and is compared with AC microgrid. The case study indicates that hybrid AC/DC microgrid has advantages in both configuration cost and reliability, and the advantages become more obvious as the change of DC load ratio. This work is supported by National High-tech R & D Program of China (863 Program) (No. 2015AA050104).

Key words: hybrid AC/DC microgrid inverter stochastic failure DC load ratio mixed integer programming optimization configuration

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