Cost-Benefit Analysis of Battery Storage System for Voltage Compliance in Distribution Grids with High Distributed Generation

Idlbi, Basem; Appen, Jan von; Kneiske, T.; Braun, Martin

doi:10.1016/j.egypro.2016.10.112

Cited by 16 publications

(12 citation statements)

References 6 publications

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“…Another role for batteries relevant to community energy is to facilitate connection of generation capacity. In [38] Idlbi et al elaborate a case study in which 0.5 MWh of lithium battery capacity enables connection of 3 MWp PV generation to a network that would otherwise require reinforcement at much greater cost to maintain voltage compliance. However, batteries are not essential to the value of the Energy Local model, as shown by the results from the Bethesda follow-up project, which did not deploy them.…”

Section: Discussionmentioning

confidence: 99%

The Practice and Potential of Renewable Energy Localisation: Results from a UK Field Trial

et al. 2019

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The adaptation of electricity demand to match the non-despatchable nature of renewable generation is one of the key challenges of the energy transition. We describe a UK field trial in 48 homes of an approach to this problem aimed at directly matching local supply and demand. This combined a community-based business model with social engagement and demand response technology employing both thermal and electrical energy storage. A proportion of these homes (14) were equipped with rooftop photovoltaics (PV) amounting to a total of 45 kWp; the business model enabled the remaining 34 homes to consume the electricity exported from the PV-equipped dwellings at a favourably low tariff in the context of a time-of-day tariff scheme. We report on the useful financial return achieved by all participants, their overall experience of the trial, and the proportion of local generation consumed locally. The energy storage devices were controlled, with user oversight, to respond automatically to signals indicating the availability of low cost electricity either from the photovoltaics or the time of day grid tariff. A substantial response was observed in the resulting demand profile from these controls, less so from demand scheduling methods which required regular user configuration. Finally results are reported from a follow-up fully commercial implementation of the concept showing the viability of the business model. We conclude that the sustainability of the transition to renewable energy can be strengthened with a community-oriented approach as demonstrated in the trial that supports users through technological change and improves return on investment by matching local generation and consumption.

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Section: Discussionmentioning

confidence: 99%

The Practice and Potential of Renewable Energy Localisation: Results from a UK Field Trial

et al. 2019

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“…In order to improve the utilization and feasibility of storages, several authors discussed different use cases other than self-consumption, e.g. [16], [8] and [17]. Considering the low profitability of physical storages, new business models are developed in the market including cloud storages, e.g.…”

Section: State Of the Artmentioning

confidence: 99%

“…On the other hand, an aim of grid operators is to control the consumption and feed-in of prosumers based on the surrounding grid conditions, like voltage and loading of grid components, in order to increase grid resilience (e.g. [7], [8]). Through self-consumption, energy can be supplied quite close to the consumption.…”

Section: Introductionmentioning

confidence: 99%

Business Models and Grid Impact of Energy Storages and Controllable Loads for PV-Self-Consumption at Prosumer Level

Idlbi¹,

Stakic²,

Casel³

et al. 2019

Proceedings of the 13th International Renewable Energy Storage Conference 2019 (IRES 2019)

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Many countries are experiencing rapidly increasing distributed generation (DG) of renewable energy sources (RES). Electricity self-consumption is currently replacing feed-in-tariffs (FIT) as one main driver of this development. A prosumer, who is a consumer and producer of energy through his own DG, like photovoltaic (PV), can save costs through the self-consumption of his PV energy. The attractiveness of this business case is mainly based on the decreasing levelized cost of energy (LCOE) of PV systems as well as the difference between the decreasing FIT and the increasing costs of electricity consumption from the public grid. Utilizing local energy storages like batteries or power-to-heat (PtH) can increase both self-consumption and earnings. Noticing this tendency, electricity suppliers and industrial manufacturers offer new business models, in which small local storages of prosumers can be substituted with district storages or even virtual storages. This contribution presents an economic comparison and grid impact analysis of different self-consumption business models (i.e. home storages, PtH, district storages, virtual storages), considering the perspectives of prosumers as well as electricity suppliers. For realistic results, assumptions have been made based on the data of a real grid area near the city of Ulm.The results show that home storages, district storages as well as PtH systems are currently significantly less profitable for prosumers compared to pure PV-systems, if only selfconsumption is targeted as a business case. District storages are not attractive as a business model as well, whereas cloud storages can yield a quite good return at least for the electricity suppliers. However, an analysis of a future scenario indicates a better economic potential for storage business models. The grid impact analysis demonstrates a possible reduction of load and voltage through storages. Yet, for an efficient use of storage systems in regard to the electricity grid, financial incentives are necessary to support a grid-friendly operation of storages.

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“…BESS can have a significant advantageous impact on the load shifting caused by electric vehicles and plug-in electric vehicles [13]. In [14], an examination is carried out on a BESS connected at MV level and the results show that the reactive power control in combination with the active power curtailment is more economically viable compared to a BESS solution. As mentioned above, however, the LV grids have higher R/X ratio and the reactive power control is an ineffective solution for voltage control in these grids.…”

Section: Introductionmentioning

confidence: 99%

Battery Storage Integration in Voltage Unbalance and Overvoltage Mitigation Control Strategies and Its Impact on the Power Quality

et al. 2019

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The increased utilisation of distributed renewable energy sources in low voltage grids leads to power quality problems such as overvoltages and voltage unbalance. This imposes challenges to the distribution system operators to maintain the power quality in their grids. To overcome these issues, energy storage systems could be integrated together with the distributed energy resources and the stored energy could be used when needed to better improve power quality and achieve better grid performance. However, integrating an energy storage system introduces additional cost, therefore, determining the right capacity is essential. In this article, an energy storage system is combined with the classical positive-sequence control strategy and the three-phase damping control strategy. The three-phase damping control strategy is able to mitigate the voltage unbalance by emulating a resistive behaviour towards the zero- and negative-sequence voltage components. This resistive behaviour can be set on different values such that the desired voltage unbalance mitigation is achieved. Hence, the three-phase damping control strategy, equipped with the energy storage system is investigated under different values of the resistive behaviour. Both control strategies are investigated under the same conditions and the impact of the different capacities of the energy storage systems is investigated.

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Cost-Benefit Analysis of Battery Storage System for Voltage Compliance in Distribution Grids with High Distributed Generation

Cited by 16 publications

References 6 publications

The Practice and Potential of Renewable Energy Localisation: Results from a UK Field Trial

The Practice and Potential of Renewable Energy Localisation: Results from a UK Field Trial

Business Models and Grid Impact of Energy Storages and Controllable Loads for PV-Self-Consumption at Prosumer Level

Battery Storage Integration in Voltage Unbalance and Overvoltage Mitigation Control Strategies and Its Impact on the Power Quality

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