面向配电网分布式光伏消纳和可靠性提高的构网型储能优化配置

胥德玉; 黄媛; 唐志远; 刘俊勇; 孙增杰; 郝志方

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电力建设 ›› 0

面向配电网分布式光伏消纳和可靠性提高的构网型储能优化配置

胥德玉¹, 黄媛¹, 唐志远¹, 刘俊勇¹, 孙增杰², 郝志方³

作者信息 +

Research on Grid-Forming Energy Storage Configuration for Distributed Photovoltaic Consumption and Reliability Improvement of Distribution Network

XU Deyu¹, HUANG Yuan¹, TANG Zhiyuan¹, LIU Junyong¹, SUN Zengjie², HAO Zhifang³

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文章历史 +

摘要

【目的】高比例分布式光伏并网导致配电网的消纳能力不足,同时新型配电系统的建设对可靠性提出了更高要求。构网型储能凭借灵活的功率同步控制能力,兼具促进新型配电网分布式光伏消纳和可靠性提升的能力。文章提出了一种考虑配电网分布式光伏消纳和可靠性提高的构网型储能优化配置模型。【方法】首先,建立了构网型储能选址定容的双层优化模型,上层模型考虑故障状态和负荷重要性,建立了提高配电网可靠性的储能选址模型;下层模型考虑分布式光伏的不确定性,建立了提升分布式光伏消纳的储能定容模型;其中,光伏不确定性的概率分布置信集合由1范数和∞范数约束,基于分布鲁棒优化方法,采用列与约束生成(CCG)算法进行求解。其次,建立了考虑可靠性与分布式光伏消纳和经济性的综合指标体系,采用改进的优劣解距离法求得最优配置方案。【结果】以改进的33节点算例系统为例验证本算法的合理性。结果表明,相较于传统储能方案,所提模型的可靠性指标提高超过10%,分布式光伏弃光率减小了7.44%,在4个关键节点配置构网型储能可获得最优效果。【结论】所提构网型储能优化配置方法显著提高了配电网的分布式光伏消纳能力和可靠性,为高比例分布式光伏接入配电网的规划投资提供参考。

Abstract

【Objective】 The high proportion of distributed photovoltaic (PV) grid integration leads to insufficient capacity for power absorption in distribution networks.Meanwhile, the development of new distribution systems imposes higher reliability requirements. Grid-forming energy storage, with its flexible power synchronization control capabilities, plays a crucial role in both enhancing the consumption of distributed PV in new distribution networks and improving system reliability. Therefore, this paper proposes an optimal configuration model for grid-forming energy storage that simultaneously addresses distributed PV consumption and reliability improvement in distribution networks. 【Methods】 First, a bi-level optimization model for the siting and sizing of grid-forming energy storage is established. The upper-level model considers fault conditions and load importance to establish an energy storage siting model designed to improve distribution network reliability. The lower-level model, considering the uncertainty of distributed PV systems, establishes an energy storage sizing model to enhance PV consumption. Specifically, the probability distribution confidence set of PV uncertainty is subject to 1-norm and ∞-norm constraints, and is solved using the Column and Constraint Generation (CCG) algorithm based on the distributionally robust optimization. Second, a comprehensive evaluation index system incorporating reliability, distributed PV consumption, and economic performance is established. The optimal configuration scheme is obtained using an improved Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) method. 【Results】 The proposed algorithm is validated through a modified 33-node test system. The results show that compared with the traditional energy storage scheme, the reliability index of the proposed model is improved by more than 10%, and the light rejection rate of distributed photovoltaic is reduced by 7.44%. The optimal effect can be obtained by configuring grid-forming energy storage at four key nodes. 【Conclusions】 The proposed grid-forming energy storage optimization configuration method significantly improves the distributed photovoltaic capacity and reliability of distribution network, and provides a reference for the planning and investment of high proportion of distributed photovoltaic access to distribution network.

导出引用

胥德玉, 黄媛, 唐志远, 刘俊勇, 孙增杰, 郝志方. 面向配电网分布式光伏消纳和可靠性提高的构网型储能优化配置[J]. 电力建设. 0

XU Deyu, HUANG Yuan, TANG Zhiyuan, LIU Junyong, SUN Zengjie, HAO Zhifang. Research on Grid-Forming Energy Storage Configuration for Distributed Photovoltaic Consumption and Reliability Improvement of Distribution Network[J]. Electric Power Construction. 0

中图分类号： TM715

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