考虑灵活性的交直流混合配电网储能双层规划

doi:10.12204/j.issn.1000-7229.2022.07.005

摘要/Abstract

摘要：

多类型分布式电源接入配电网对系统灵活性要求越来越高。基于交直流混合配电网的高灵活性和高可控性,提出了一种考虑灵活性的交直流混合配电网储能双层规划方法。首先,分析系统灵活性需求与灵活性资源运行特性,建立系统灵活性评估指标;然后,采用K-means聚类算法建立配电网中分布式电源和负荷的典型运行场景集合;其次,建立考虑灵活性的交直流混合配电网储能双层规划模型,上层以其年综合成本最小为优化目标,下层以其综合运行成本最少和系统运行灵活性最优为目标,采用非线性化主成分分析法,并结合遗传算法求解规划模型。最后,基于改进IEEE 33节点配网系统验证双层规划模型和储能最优配置方案的合理性与有效性。

关键词: 交直流混合配电网, 灵活性, 双层规划, 遗传算法, 非线性化主成分分析法

Abstract:

The AC/DC hybrid distribution network has the characteristics of high flexibility and high controllability, and will be widely used in the future distribution network. A two-level planning method for energy storage in AC/DC hybrid distribution network considering flexibility is proposed in this paper. Firstly, this paper analyzes the flexibility requirements in the AC/DC hybrid distribution network and the operating characteristics of the flexible resources considered, and then establishes a quantitative calculation index to measure the flexibility in the operation of the distribution network. Then, K-means clustering algorithm is used to establish the collection of typical operation scenarios for the output and daily load of distributed power generation in distribution network. Secondly, a two-level planning model for energy storage in AC/DC hybrid distribution network is established, which takes into account flexibility. The goal is to minimize the comprehensive operation cost of the distribution network and the optimal level of system flexibility, and the genetic algorithm is used to solve the optimal planning scheme. Finally, on the basis of the improved IEEE 33-node distribution network system, the rationality and effectiveness of the two-level planning model and the optimal configuration of energy storage are verified.

Key words: AC/DC hybrid distribution network, flexibility, two-level planning, genetic algorithm, non-linear principal component analysis

中图分类号:

TM731

宫建锋, 周宗川, 靳盘龙, 张斌, 韩一鸣, 冯雪. 考虑灵活性的交直流混合配电网储能双层规划[J]. 电力建设, 2022, 43(7): 48-56.

GONG Jianfeng, ZHOU Zongchuan, JIN Panlong, ZHANG Bin, HAN Yiming, FENG Xue. Two-Level Planning of ESS in AC/DC Hybrid Distribution Network Considering Flexibility[J]. ELECTRIC POWER CONSTRUCTION, 2022, 43(7): 48-56.

图/表 14

图1 双层规划的逻辑关系

Fig.1 Logical relationship of the two-level planning

图2 求解流程

Fig.2 Solution flow

图3 改进IEEE 33节点系统

Fig.3 IEEE 33-bus system

表1 峰平谷时段划分与分时电价

Table 1 Peak and valley period and TOU electricity price

图4 遗传算法收敛特性曲线

Fig.4 Convergence characteristic curve of GA

图5 加权平均半径与聚类簇数目之间关系

Fig.5 Relationship between weighted average radius and the number of clusters

图6 分布式光伏出力典型场景

Fig.6 Typical scenes of distributed photovoltaic output

图7 负荷典型场景

Fig.7 Typical scenes of the load

表2 分布式光伏典型场景发生概率

Table 2 Probability of typical scene about distributed generation

表3 负荷典型场景发生概率

Table 3 Probability of typical scene about load

表4 ESS优化配置结果

Table 4 Optimized configuration results of ESS

表5 Economic indicators 万元

Table 5

图8 3种方案下灵活性裕度指标

Fig.8 Flexibility in three ways

图9 2种方案下灵活性裕度指标

Fig.9 Flexibility in two ways

参考文献 20

[1]	李晖, 刘栋, 姚丹阳. 面向碳达峰碳中和目标的我国电力系统发展研判[J]. 中国电机工程学报, 2021, 41(18): 6245-6259.
	LI Hui, LIU Dong, YAO Danyang. Analysis and reflection on the development of power system towards the goal of carbon emission peak and carbon neutrality[J]. Proceedings of the CSEE, 2021, 41(18): 6245-6259.
[2]	袁宇波, 张宸宇, 袁晓冬, 等. 基于柔性多状态开关的混合配电网能量管理策略与控制方法[J]. 电力系统自动化, 2021(8): 60-67.
	YUAN Yubo, ZHANG Chenyu, YUAN Xiaodong, et al. Energy management strategy and control method of hybrid distribution network based on soft open point[J]. Automation of Electric Power Systems, 2021(8): 60-67.
[3]	符杨, 张智泉, 李振坤, 等. 基于二阶段鲁棒博弈模型的微电网群及混合交直流配电系统协调能量管理策略研究[J]. 中国电机工程学报, 2020, 40(4): 1226-1240, 1413.
	FU Yang, ZHANG Zhiquan, LI Zhenkun, et al. A two-stage robust game approach for coordinated energy management in hybrid AC/DC distribution system with microgrid clusters[J]. Proceedings of the CSEE, 2020, 40(4): 1226-1240, 1413.
[4]	伍也凡, 刘浩田, 肖振锋, 等. 考虑源-网-荷不确定性的增量配电网规划研究综述[J]. 电力系统保护与控制, 2021, 49(8): 177-187.
	WU Yefan, LIU Haotian, XIAO Zhenfeng, et al. Review of incremental distribution network planning considering the uncertainty of source-network-load[J]. Power System Protection and Control, 2021, 49(8): 177-187.
[5]	赵东元, 胡楠, 傅靖, 等. 提升新能源电力系统灵活性的中国实践及发展路径研究[J]. 电力系统保护与控制, 2020, 48(24): 1-8.
	ZHAO Dongyuan, HU Nan, FU Jing, et al. Research on the practice and road map of enhancing the flexibility of a new generation power system in China[J]. Power System Protection and Control, 2020, 48(24): 1-8.
[6]	JOOSHAKI M, FARZIN H, ABBASPOUR A, et al. A model for stochastic planning of distribution network and autonomous DG units[J]. IEEE Transactions on Industrial Informatics, 2020, 16(6): 3685-3696. doi: 10.1109/TII.2019.2936280 URL
[7]	卫志农, 裴蕾, 陈胜, 等. 高比例新能源交直流混合配电网优化运行与安全分析研究综述[J]. 电力自动化设备, 2021, 41(9): 85-94.
	WEI Zhinong, PEI Lei, CHEN Sheng, et al. Review on optimal operation and safety analysis of AC/DC hybrid distribution network with high proportion of renewable energy[J]. Electric Power Automation Equipment, 2021, 41(9): 85-94.
[8]	刘万宇, 李华强, 张弘历, 等. 考虑灵活性供需平衡的输电网扩展规划[J]. 电力系统自动化, 2018, 42(5): 56-63.
	LIU Wanyu, LI Huaqiang, ZHANG Hongli, et al. Expansion planning of transmission grid based on coordination of flexible power supply and demand[J]. Automation of Electric Power Systems, 2018, 42(5): 56-63.
[9]	朱晓荣, 鹿国微, 谢婉莹. 考虑源网荷灵活性资源的配电网储能鲁棒规划[J]. 电力自动化设备, 2021, 41(8): 8-16, 40.
	ZHU Xiaorong, LU Guowei, XIE Wanying. Robust planning of energy storage in distribution network considering source-network-load flexible resources[J]. Electric Power Automation Equipment, 2021, 41(8): 8-16, 40.
[10]	王守相, 陈建凯, 王洪坤, 等. 综合考虑电动汽车充电与储能及可中断负荷调度的配电网两阶段灵活性提升优化方法[J]. 电力自动化设备, 2020, 40(11): 1-10.
	WANG Shouxiang, CHEN Jiankai, WANG Hongkun, et al. Two-stage flexibility improvement optimization method of distribution network considering EV charging and scheduling of energy storage and interruptible loads[J]. Electric Power Automation Equipment, 2020, 40(11): 1-10.
[11]	曾梦隆, 韦钢, 朱兰, 等. 交直流配电网中电动汽车充换储一体站规划[J]. 电力系统自动化, 2021, 45(18): 52-60.
	ZENG Menglong, WEI Gang, ZHU Lan, et al. Planning of electric vehicle charging-swapping-storage integrated station in AC/DC distribution network[J]. Automation of Electric Power Systems, 2021, 45(18): 52-60.
[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]	李桂鑫, 葛磊蛟, 陶永晋, 等. 考虑分布式能源综合利用的交直流混合配电网规划研究[J]. 可再生能源, 2020, 38(1):98-103.
	LI Guixin, GE Leijiao, TAO Yongjin, et al. Research on the planning of AC/DC hybrid distribution network considering the comprehensive utilization of distributed energy[J]. Renewable Energy Resources, 2020, 38(1):98-103.
[14]	刘鹏翔. 考虑N-1安全准则的交直流混合配电网鲁棒规划[D]. 南京: 东南大学, 2019.
	LIU Pengxiang. Robust AC-DC distribution network planning considering N-1 security criterion[D]. Nanjing: Southeast University, 2019.
[15]	樊安洁. 考虑灵活性的交直流配电网规划研究[D]. 南京: 东南大学, 2019.
	FAN Anjie. Reasearch on AC/DC hybrid distribution network planning considering flexibility[D]. Nanjing: Southeast University, 2019.
[16]	刘赛. 交直流配电网灵活运行优化研究[D]. 南京: 东南大学, 2019.
	LIU Sai. Reasearch on flexible operation optimization of AC/DC distribution network[D]. Nanjing: Southeast University, 2019.
[17]	巨云涛, 黄炎, 张若思. 基于二阶锥规划凸松弛的三相交直流混合主动配电网最优潮流[J]. 电工技术学报, 2021, 36(9): 1866-1875.
	JU Yuntao, HUANG Yan, ZHANG Ruosi. Optimal power flow of three-phase hybrid AC-DC in active distribution network based on second order cone programming[J]. Transactions of China Electrotechnical Society, 2021, 36(9): 1866-1875.
[18]	陈鹏伟, 肖湘宁, 唐松浩, 等. 交直流混合配电网区间潮流等效算法[J]. 中国电机工程学报, 2019, 39(4): 979-992.
	CHEN Pengwei, XIAO Xiangning, TANG Songhao, et al. An equivalent algorithm of interval power flow applied to AC/DC hybrid distribution networks[J]. Proceedings of the CSEE, 2019, 39(4): 979-992.
[19]	陈柏松, 叶雪梅, 安利. 基于非线性主成分分析的最小包围盒计算方法[J]. 计算机集成制造系统, 2010, 16(11): 2375-2378.
	CHEN Baisong, YE Xuemei, AN Li. Minimum bounding box calculation based on nonlinear principle component analysis[J]. Computer Integrated Manufacturing Systems, 2010, 16(11): 2375-2378.
[20]	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.