Load Transfer Flexibility Analysis of Distribution Network with Electric Energy Routers

doi:10.16183/j.cnki.jsjtu.2021.541

Abstract

Abstract:

With the increase of the penetration rate of distributed generation (DG), lack of flexibility of distribution network has become increasingly prominent. This paper focuses on electric energy router (EER), and analyzes its impact on the flexibility of distribution network. First, the index of the transfer flexibility of distribution network is proposed to represent one aspect of distribution network flexibility. Then, the linear model of the EER and its related constraints are analyzed, and an optimization model of the transfer flexibility of the active distribution network with the EER model is constructed. Finally, based on the 94-bus alternating current distribution network, different scenarios are designed to analyze and compare the effects of different DG operation control modes and different parameters of EER on the transfer flexibility of distribution network. The effectiveness of EER in improving the transfer flexibility of distribution network is verified.

Key words: electric energy router (EER), transfer flexibility, second-order cone programming, distributed generation (DG), distribution network

CLC Number:

TM711

ZHANG Peng, LÜ Gongxiang, LIU Zhijie, ZHU Shouzhen, SHAO Zhiyong. Load Transfer Flexibility Analysis of Distribution Network with Electric Energy Routers[J]. Journal of Shanghai Jiao Tong University, 2023, 57(5): 513-520.

Figures/Tables 9

Fig.1

Fig.2

Fig.3

Tab.1

Transfer flexibility of AC distribution network

系统	P_min,_i/MW	P_max,_i/MW	$P - i$ /MW	E/MW
变电站1	10.908	19.625	25.266 5	8.717
变电站2	9.276	18.078	16.677	8.802
配电网				8.757

Tab.1

Fig.4

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References 14

[1]	AKI H, KUMAMOTO T, ISHIDA M. Grid flexibility dispatch by integrated control of distributed energy resources[C]//2019 IEEE Third International Conference on DC Microgrids. Matsue, Japan: IEEE, 2019: 1-5.
[2]	JAKHAR A. A comprehensive review of power system flexibility[C]// 2017 IEEE International Conference on Power, Control, Signals and Instrumentation Engineering. Chennai, India: IEEE, 2017: 1747-1752.
[3]	马杰, 李秋燕, 丁岩, 等. 含高渗透率可再生能源的配电网灵活性评价指标体系及计算方法[J]. 电力系统及其自动化学报, 2020, 32(9): 99-104.
	MA Jie, LI Qiuyan, DING Yan, et al. Flexibility evaluation index system and calculation method for distribution network with high-permeability renewable energy[J]. Proceedings of the CSU-EPSA, 2020, 32(9): 99-104.
[4]	李则衡, 陈磊, 路晓敏, 等. 基于系统灵活性的可再生能源接纳评估[J]. 电网技术, 2017, 41(7): 2187-2194.
	LI Zeheng, CHEN Lei, LU Xiaomin, et al. Assessment of renewable energy accommodation based on system flexibility analysis[J]. Power System Technology, 2017, 41(7): 2187-2194.
[5]	鲁宗相, 李海波, 乔颖. 含高比例可再生能源电力系统灵活性规划及挑战[J]. 电力系统自动化, 2016, 40(13): 147-158.
	LU Zongxiang, LI Haibo, QIAO Ying. Power system flexibility planning and challenges considering high proportion of renewable energy[J]. Automation of Electric Power Systems, 2016, 40(13): 147-158.
[6]	雷才嘉, 贾巍, 高慧, 等. 一流城市配电网的灵活适应性评价指标及计算方法[J]. 供用电, 2019, 36(5): 2-7.
	LEI Caijia, JIA Wei, GAO Hui, et al. Research on flexible adaptability evaluation index and calculation method for first-class distribution network[J]. Distribution & Utilization, 2019, 36(5): 2-7.
[7]	孙晓艳, 邱志强, 刘俊勇, 等. 配电网转供能力研究综述[J]. 供用电, 2017, 34(7): 60-66.
	SUN Xiaoyan, QIU Zhiqiang, LIU Junyong, et al. A review of the research on load transfer capability of the distribution network[J]. Distribution & Utilization, 2017, 34(7): 60-66.
[8]	温丰瑞, 李华强, 温翔宇, 等. 主动配电网中计及灵活性不足风险的储能优化配置[J]. 电网技术, 2019, 43(11): 3952-3962.
	WEN Fengrui, LI Huaqiang, WEN Xiangyu, et al. Optimal allocation of energy storage systems considering flexibility deficiency risk in active distribution network[J]. Power System Technology, 2019, 43(11): 3952-3962.
[9]	刘迎澍, 马川. 基于交直流混合微网构架的电能路由器[J]. 现代电力, 2015, 32(1): 13-18.
	LIU Yingshu, MA Chuan. The power router based on hybrid AC/DC microgrid framework[J]. Modern Electric Power, 2015, 32(1): 13-18.
[10]	宗升, 何湘宁, 吴建德, 等. 基于电力电子变换的电能路由器研究现状与发展[J]. 中国电机工程学报, 2015, 35(18): 4559-4570.
	ZONG Sheng, HE Xiangning, WU Jiande, et al. Overview of power electronics based electrical energy router[J]. Proceedings of the CSEE, 2015, 35(18): 4559-4570.
[11]	赵争鸣, 冯高辉, 袁立强, 等. 电能路由器的发展及其关键技术[J]. 中国电机工程学报, 2017, 37(13): 3823-3834.
	ZHAO Zhengming, FENG Gaohui, YUAN Liqiang, et al. The development and key technologies of electric energy router[J]. Proceedings of the CSEE, 2017, 37(13): 3823-3834.
[12]	程亮, 黄河, 朱磊, 等. 交直流配电网的交换功率灵活性提升方法研究[J]. 电力工程技术, 2019, 38(4): 10-17.
	CHENG Liang, HUANG He, ZHU Lei, et al. Method of improving exchange power flexibility between AC / DC distribution network and transmission network[J]. Electric Power Engineering Technology, 2019, 38(4): 10-17.
[13]	王弦, 刘建华, 向加佳, 等. 基于电力电子变压器的电能路由器研究[J]. 自动化与仪器仪表, 2016(11): 4-8.
	WANG Xian, LIU Jianhua, XIANG Jiajia, et al. Study on the power router based on power electric transformer[J]. Automation & Instrumentation, 2016(11): 4-8.
[14]	SU C T, LEE C S. Network reconfiguration of distribution systems using improved mixed-integer hybrid differential evolution[J]. IEEE Transactions on Power Delivery, 2003, 18(3): 1022-1027. doi: 10.1109/TPWRD.2003.813641 URL

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