Abstract：Microgrid is an effective form for renewable energy application. Optimal sizing and operation is the key issue to guarantee the economy and stability of the microgrid system. With the increase of DC loads, AC-DC hybrid microgrid has become a current research hotspot. This paper focuses on the two-layer optimal sizing of AC-DC hybrid microgrid considering the optimization of distributed generation operation. The intermittency and uncertainty of renewable energy generation have been analyzed. Demand-side response is introduced to optimize load characteristics by guiding customers to change electric consuming behavior. Accordingly, the microgrid system is more stable and economical. The non-dominated sorting genetic algorithm (NSGA-II) combined with mixed integer linear programming (MILP) is adopted to solve the multi-objective optimization model based on a practical project. The results verify the rationality and validity of the proposed approach.
[1] 王成山, 武震, 李鹏. 微电网关键技术研究[J]. 电工技术学报, 2014, 29(2): 1-12. Wang Chengshan, Wu Zhen, Li Peng.Research on key technologies of microgrid[J]. Transactions of China Electrotechnical Society, 2014, 29(2): 1-12. [2] 赵卓立, 杨苹, 郑成立, 等. 微电网动态稳定性研究述评[J]. 电工技术学报, 2017, 32(10): 111-122. Zhao Zhuoli, Yang Ping, Zheng Chengli, et al.Review on dynamic stability research of microgrid[J]. Transactions of China Electrotechnical Society, 2017, 32(10): 111-122. [3] 冯伟, 孙凯, 关雅娟, 等. 孤立微电网中基于输出电压复合控制的电压源型并网逆变器谐波电流抑制策略[J]. 电工技术学报, 2016, 31(7): 72-80. Feng Wei, Sun Kai, Guan Yajuan, et al.A harmonic current suppression strategy for voltage source grid-connected inverters based on output voltage hybrid control in islanded microgrids[J]. Transactions of China Electrotechnical Society, 2016, 31(7): 72-80. [4] 刘梦璇, 郭力, 王成山, 等. 风光柴储孤立微电网系统协调运行控制策略设计[J]. 电力系统自动化, 2012, 36(15): 19-24. Liu Mengxuan, Guo Li, Wang Chengshan, et al.A coordinated operating control strategy for hybrid isolated microgrid including wind power, photo- voltaic, diesel generator, and battery storage[J]. Automation of Electric Power Systems, 2012, 36(15): 19-24. [5] 周志超, 郭力, 王成山, 等. 风柴储生物质独立微电网系统的优化规划设计[J]. 电力系统自动化, 2014, 38(7): 16-22. Zhou Zhichao, Guo Li, Wang Chengshan, et al.Optimal planning and design of a wind/biomass/ diesel/battery stand-alone microgrid[J]. Automation of Electric Power Systems, 2014, 38(7): 16-22. [6] 李存斌, 张建业, 李鹏. 考虑成本、排污及风险的微电网运营多目标优化模型[J]. 中国电机工程学报, 2015, 35(5): 1051-1058. Li Cunbin, Zhang Jianye, Li Peng.Multi-objective optimization model of micro-grid operation con- sidering cost, pollution discharge and risk[J]. Proceedings of the CSEE, 2015, 35(5): 1051-1058. [7] 陈健, 王成山, 赵波, 等. 考虑不同控制策略的独立型微电网优化配置[J]. 电力系统自动化, 2013, 37(11): 1-6. Chen Jian, Wang Chengshan, Zhao Bo, et al.Optimal sizing for stand-alone microgrid considering different control strategies[J]. Automation of Electric Power Systems, 2013, 37(11): 1-6. [8] 薛美东, 赵波, 张雪松, 等. 并网型微电网的优化配置与评估[J]. 电力系统自动化, 2015, 39(3): 6-13. Xue Meidong, Zhao Bo, Zhang Xuesong, et al.Integrated plan and evaluation of grid-connected microgrid[J]. Automation of Electric Power Systems, 2015, 39(3): 6-13. [9] 汪湘晋, 赵波, 吴红斌, 等. 并网型交直流混合微电网优化配置分析[J]. 电力系统自动化, 2016, 40(13): 55-62. Wang Xiangjin, Zhao Bo, Wu Hongbin, et al.Optimal sizing analysis of grid-connected hybrid AC-DC microgrid[J]. Automation of Electric Power Systems, 2016, 40(13): 55-62. [10] 孙欣, 方陈, 沈风, 等. 考虑风电出力不确定性的发用电机组组合方法[J]. 电工技术学报, 2017, 32(4): 204-211. Sun Xin, Fang Chen, Shen Feng, et al.An integrated generation-consumption unit commitment model considering the uncertainty of wind power[J]. Transactions of China Electrotechnical Society, 2017, 32(4): 204-211. [11] Khodaei A, Bahramirad S, Shahidehpour M.Microgrid planning under uncertainty[J]. IEEE Transactions on Power Systems, 2015, 30(5): 2417-2425. [12] 段翩, 朱建全, 刘明波. 基于双层模糊机会约束规划的虚拟电厂优化调度[J]. 电工技术学报, 2016, 31(9): 58-67. Duan Pian, Zhu Jianquan, Liu Mingbo.Optimal dispatch of virtual power plant based on bi-level fuzzy chance constrained programming[J]. Transa- ctions of China Electrotechnical Society, 2016, 31(9): 58-67. [13] 王锡凡, 肖云鹏, 王秀丽. 新形势下电力系统供需互动问题研究及分析[J]. 中国电机工程学报, 2014, 34(29): 5018-5028. Wang Xifan, Xiao Yunpeng, Wang Xiuli.Study and analysis on supply-demand interaction of power systems under new circumstances[J]. Proceedings of the CSEE, 2014, 34(29): 5018-5028. [14] 刘柏良, 黄学良, 李军. 计及可时移负荷的海岛微网电源优化配置[J]. 中国电机工程学报, 2014, 34(25): 4250-4258. Liu Bailiang, Huang Xueliang, Li Jun.Optimal sizing of distributed generation in a typical island microgrid with time-shifting load[J]. Proceedings of the CSEE, 2014, 34(25): 4250-4258. [15] 赵波, 包侃侃, 徐志成, 等. 考虑需求侧响应的光储并网型微电网优化配置[J]. 中国电机工程学报, 2015, 35(21): 5465-5474. Zhao Bo, Bao Kankan, Xu Zhicheng, et al.Optimal sizing for grid-connected PV-and-storage microgrid considering demand response[J]. Proceedings of the CSEE, 2015, 35(21): 5465-5474. [16] 宋艺航, 谭忠富, 李欢欢, 等. 促进风电消纳的发电侧、储能及需求侧联合优化模型[J]. 电网技术, 2014, 38(3): 610-615. Song Yihang, Tan Zhongfu, Li Xinxin, et al.An optimization model combining generation side and energy storage system with demand side to promote accommodation of wind power[J]. Power System Technology, 2014, 38(3): 610-615. [17] Xiang J, Hu C, Chen L, et al.Enhanced performance of Zn(II)-doped lead-acid batteries with electro- chemical active carbon in negative mass[J]. Journal of Power Sources, 2016, 328: 8-14. [18] 娄素华, 罗鹏, 吴耀武, 等. 计及负荷可控性的微网储能容量优化配置[J]. 电工技术学报, 2016, 31(21): 39-45. Lou Suhua, Luo Peng, Wu Yaowu, et al.Sizing of energy storage in microgrid with controllable load[J]. Transactions of China Electrotechnical Society, 2016, 31(21): 39-45.
2018, Vol. 33 
