Data-Driven Day-Ahead Dispatch Method for Grid-Tied Distributed Batteries Considering Conflict Between Service Interests

The rapid advancement of battery technology has drawn attention to the effective dispatch of distributed battery storage systems. Batteries offer significant benefits in flexible energy supply and grid support, but maximising their cost-effectiveness remains a challenge. A key issue is balancing con...

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Veröffentlicht in:Electronics (Basel) 2024-11, Vol.13 (22), p.4357
Hauptverfasser: Zhang, Yajun, Yang, Xingang, Fang, Lurui, Lyu, Yanxi, Xiong, Xuejun, Zhang, Yufan
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container_end_page
container_issue 22
container_start_page 4357
container_title Electronics (Basel)
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creator Zhang, Yajun
Yang, Xingang
Fang, Lurui
Lyu, Yanxi
Xiong, Xuejun
Zhang, Yufan
description The rapid advancement of battery technology has drawn attention to the effective dispatch of distributed battery storage systems. Batteries offer significant benefits in flexible energy supply and grid support, but maximising their cost-effectiveness remains a challenge. A key issue is balancing conflicts between intentional network services, such as energy arbitrage to reduce the overall electricity costs, and unintentional services, like fault-induced unintentional islanding. This paper presents a novel dispatch methodology that addresses these conflicts by considering both energy arbitrage and unintentional islanding services. First, demand profiles are clustered to reduce uncertainty, and uncertainty sets for photovoltaic (PV) generation and demand are derived. The dispatch strategy is originally formulated as a robust optimal power flow problem, accounting for both economic benefits and risks from unresponsive islanding requests, alongside energy loss reduction to prevent a battery-induced artificial peak. Last, this paper updates the objective function for adapting possible long-run competition changes. The IEEE 33-bus system is utilised to validate the methodology. Case studies show that, by considering the reserve for possible islanding requests, a battery with limited capacity will start to discharge after a demand drop from the peak, leading to the profit dropping from USD 185/day (without reserving capacity) to USD 21/day. It also finds that low-resolution dynamic pricing would be more appropriate for accommodating battery systems. This finding offers valuable guidance for pricing strategies.
doi_str_mv 10.3390/electronics13224357
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source MDPI - Multidisciplinary Digital Publishing Institute; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals
subjects Algorithms
Analysis
Arbitrage
Batteries
Case studies
Cost effectiveness
Cost recovery
Efficiency
Electric power systems
Electricity
Energy
Energy costs
Linear programming
Loss reduction
Methods
Optimization
Photovoltaic cells
Power dispatch
Power flow
Prices and rates
Pricing
Profitability
Profits
Storage systems
Uncertainty
title Data-Driven Day-Ahead Dispatch Method for Grid-Tied Distributed Batteries Considering Conflict Between Service Interests
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