电池储能电站替代变电站升级的优化决策配置方法

doi:10.12204/j.issn.1000-7229.2023.07.005

摘要/Abstract

摘要：

在大规模新能源接入及负荷增长情况下部分变电站存在容量不足问题,为确保电力公司运行经济性,文章对比分析配置储能电站及变电站升级扩容两种方案。首先考虑方案经济性、可靠性及环境指标建立综合评价指标体系进行评估,其次以最大化配置储能效益为规划目标,考虑储能系统全寿命周期成本与提升电网运行可靠性、延缓电网升级改造及降低配电网运行网损三部分效益建立储能成本-效益模型,然后采用改进进化算法进行仿真确定储能系统的配置容量,并通过评价体系得到最佳规划方案。结果表明:在当前电网运行水平和模式下,配置储能系统可以延缓电网升级改造,提升电网整体运行水平,可为后续大规模新能源并网应用储能系统平滑新能源出力、延缓电网升级改造提供规划参考。

关键词: 配电网规划, 储能系统, 变电站扩容, 可靠性, 容量配置

Abstract:

With the introduction of large-scale energy sources and increasing load growth, some substations may face capacity limitations. To ensure the operational economy of power companies, this study undertakes a comparative analysis of two schemes for configuring energy storage power stations and upgrading and expanding substations. First, we considered the economic, reliability, and environmental indicators of the scheme to establish a comprehensive evaluation index system. Second, to maximize the allocation of energy storage benefits as the planning goal, we consider the life cycle cost of the energy storage system and the benefits of improving power grid operation reliability, delaying the upgrading of the power grid, and reducing operating network loss in the distribution network to establish an energy storage cost-benefit model. Subsequently, an improved evolutionary algorithm was utilized in simulations to ascertain the allocation capacity of the energy storage system. The optimal planning scheme was then obtained through the evaluation system. The results show that, under the current grid operation level and mode, the configuration of the energy storage system can delay grid upgrading, improve the overall operation level of the grid, and provide a planning reference for the subsequent large-scale new energy grid connection application of the energy storage system to smooth the new energy output and delay grid upgrading.

Key words: distribution network planning, energy storage system, substation expansion, reliability, capacity configuration

中图分类号:

TM91

张中丹, 皮霞, 杨德州, 吕金历. 电池储能电站替代变电站升级的优化决策配置方法[J]. 电力建设, 2023, 44(7): 41-49.

ZHANG Zhongdan, PI Xia, YANG Dezhou, Lü Jinli. Optimal Decision-making Configuration Method for Battery Energy Storage Station to Replace Substation Upgrades[J]. ELECTRIC POWER CONSTRUCTION, 2023, 44(7): 41-49.

图/表 9

图1 储能容量配置流程

Fig.1 Energy storage capacity allocation process

图2 电网拓扑

Fig.2 Grid topology

表1 储能系统参数

Table 1 Energy storage system parameters

表2 线路结构参数

Table 2 Line structure parameters

表3 元器件可靠性参数

Table 3 Component reliability parameters

表4 其他参数

Table 4 Other parameters

表5 Cost benefit value 万元

Table 5

图3 不同储能容量下综合效益

Fig.3 Comprehensive benefits under different storage capacity

表6 对比指标

Table 6 Comparison indicator

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