Analyzing the boundaries for TSO-DSO coordination when activating flexibility for DSO´s in networks with an expected significant load increase

IF 4.8 2区 工程技术 Q2 ENERGY & FUELS Sustainable Energy Grids & Networks Pub Date : 2024-07-23 DOI:10.1016/j.segan.2024.101482
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Abstract

The Transmission System Operators (TSO) and Distribution System Operators (DSO) coordination literature deals with different coordination schemes or coordination methodologies. However, consumer actions or regular DSO operations continuously affect the system balance operation, and no major coordination is required as these actions individually have negligible impacts on the overall system. The literature has not previously analysed where the limit beyond which coordination is necessary. This question requires an analysis of the DSO operations where the need for coordination is foreseen and a case-by-case study of what type of impacts are created by the activation of the DSO flexibility resources on the responsibilities of the TSO. Such analysis helps to define thresholds and scenarios considering existing changes in distribution networks, which can be a reference for delimitating costly coordination procedures. This paper presents a revision of all the possible scenarios of the DSO operation needs and their impacts on TSO responsibilities considering the possible TSO/DSO borders at different voltage levels. Afterward, a methodology is proposed to analyse more deeply the impact of flexibility activation with an expected significant load increase. Representative case studies evaluate the possible impacts on TSO responsibilities of local flexibility activation. This paper concludes that the impact of local flexibility is expected to be significant when large power changes are managed in the short term, estimated in more than 50 MW if the DSO operates in 132 kV or more than 15 MW if the DSO operates up to 66 kV. At LV or MV level, minor coordination would be needed.

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分析在预期负荷大幅增加的网络中为 DSO 启动灵活性时 TSO-DSO 协调的界限
输电系统运营商(TSO)和配电系统运营商(DSO)的协调文献涉及不同的协调方案或协调方法。然而,消费者行为或 DSO 的常规操作会持续影响系统的平衡运行,由于这些行为对整个系统的影响微乎其微,因此无需进行重大协调。以前的文献没有分析过需要协调的极限在哪里。这个问题需要对预计需要协调的 DSO 运行进行分析,并逐个研究 DSO 灵活性资源的启动会对 TSO 的责任产生何种影响。这种分析有助于确定配电网现有变化的阈值和情景,可作为划定成本高昂的协调程序的参考。考虑到不同电压等级下可能存在的 TSO/DSO 边界,本文对 DSO 运行需求的所有可能方案及其对 TSO 责任的影响进行了修订。随后,本文提出了一种方法,用于更深入地分析预期负荷大幅增加时灵活性启动的影响。具有代表性的案例研究评估了本地灵活性激活对 TSO 责任的可能影响。本文的结论是,在短期内管理大的功率变化时,局部灵活性的影响预计会很大,如果运行电压为 132 千伏,则局部灵活性的影响估计会超过 50 兆瓦;如果运行电压高达 66 千伏,则局部灵活性的影响会超过 15 兆瓦。在低压或中压层面,需要进行少量协调。
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来源期刊
Sustainable Energy Grids & Networks
Sustainable Energy Grids & Networks Energy-Energy Engineering and Power Technology
CiteScore
7.90
自引率
13.00%
发文量
206
审稿时长
49 days
期刊介绍: Sustainable Energy, Grids and Networks (SEGAN)is an international peer-reviewed publication for theoretical and applied research dealing with energy, information grids and power networks, including smart grids from super to micro grid scales. SEGAN welcomes papers describing fundamental advances in mathematical, statistical or computational methods with application to power and energy systems, as well as papers on applications, computation and modeling in the areas of electrical and energy systems with coupled information and communication technologies.
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