基于联络线传输功率可行域的多类型储能优化配置策略

doi:10.19799/j.cnki.2095-4239.2025.0730

摘要/Abstract

摘要：

受外送通道传输容量及区域电网内部多维安全边界的限制，大规模新能源面临外送通道阻塞的严峻挑战。针对阻塞管理过程中联络线传输极限约束难以精确表征其传输能力及单一类型储能调节能力有限的问题，本文提出一种基于联络线传输功率可行域的多类型储能优化配置策略。首先，计及区域电网多维安全边界构建电网安全稳定运行空间，并基于顶点搜索法将其投影至联络线传输功率空间以刻画传输功率可行域；基于此，结合多类型储能的差异化互补调节潜力，建立以综合经济收益最优为目标的多类型储能优化配置模型，利用混合整数线性规划（MILP）求解多类型储能最优配置方案并获取最优联络线外送功率曲线；最后，基于我国北方某地区实际运行数据开展算例分析，验证所提多类型储能优化配置策略的可行性与有效性。结果表明，所提策略可经济有效地提高外送通道利用率、缓解弃风弃光现象，并降低电网线路阻塞风险。

关键词: 联络线传输功率可行域, 输电阻塞, 多类型储能优化配置, 混合整数规划

Abstract:

Limited by the transmission capacity on the transmission channels and the multidimensional security boundaries within the regional power grid, the large-scale renewable energy faces severe challenges of transmission channel congestion. To address the issue in congestion management that conventional tie-line transmission limit constraints fail to accurately represent actual transmission capabilities, and the regulation capability of single-type energy storage remains limited, this paper proposes an optimal configuration strategy of multi-type energy storage based on the feasible region of tie-lines. Firstly, considering the multi-dimensional security boundaries of the receiving-end regional power grid, a secure and stable operational space is constructed and projected onto the transmission power space of tie-lines using the vertex search algorithm, thereby delineating the feasible transmission region. Based on this, combing with the complementary regulation capabilities of multi-type energy storage, an optimal configuration model of multi-type energy storage with the objective of maximizing comprehensive economic benefits is developed. Mixed Integer Linear Programming (MILP) methods are employed to solve for the optimal configuration of multi-type energy storage and to derive the corresponding optimal tie-line transmission power profiles. Finally, a case study is conducted using real-world operational data from a northern region of China to verify the feasibility and effectiveness of the proposed strategy. The results demonstrate that the strategy can economically and effectively enhance the utilization of transmission channels, mitigate renewable energy curtailment, and reduce the risk of line congestion.

Key words: Feasible region of tie-line transmission power, Transmission congestion, Optimal configuration of multi-type energy storage, MILP

中图分类号:

TM 715

胡浩, 赵雪楠, 尚国政, 郑子萱, 徐正阳, 李杰. 基于联络线传输功率可行域的多类型储能优化配置策略[J]. 储能科学与技术, doi: 10.19799/j.cnki.2095-4239.2025.0730.

Hao HU, Xuenan ZHAO, Guozheng SHANG, Zixuan ZHENG, Zhengyang XU, Jie LI. Optimal Configuration Strategy of Multi-type Energy Storage Based on the Feasible Region of Tie-line Transmission Power[J]. Energy Storage Science and Technology, doi: 10.19799/j.cnki.2095-4239.2025.0730.

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	送端区域	储能类型	额定功率(MW)	额定容量(MWh)
算例二	送端区域1	锂离子电池储能	240	960
算例二	送端区域2	锂离子电池储能	282.5	1130
算例四	送端区域1	锂离子电池储能	114	456
	送端区域1	压缩空气储能	120	1200
	送端区域2	锂离子电池储能	162.5	650
	送端区域2	压缩空气储能	120	1200

	功率外送收益/万元	弃风弃光惩罚成本/万元	火电机组发电成本/万元	储能建设成本/万元	储能运维成本/万元	不平衡功率惩罚成本/万元	总经济收益/万元
算例一	1947.5	318.8	372.8	0	0	0	1255.9
算例二	2161.5	21.0	295.0	171.9	78.8	0	1594.8
算例三	2589.1	8.4	469.6	119.2	36.1	207.8	1748.2
算例四	2261.7	8.6	330.6	129.2	40.4	0	1752.9

参数	锂离子电池储能	压缩空气储能
比例系数η_S,i	4	10
初始SOC	0.5	0.5
使用年限	10	20
贴现率	6%	6%
循环效率	90%^[24]	70%^[24]
使用年限内单位容量投资成本/(万元/MWh)	200^[25]	64^[25]
使用年限内单位功率运维成本/(万元/MW)	45^[25]	10^[25]