Countrywide PV hosting capacity and energy storage requirements for distribution networks: The case of Switzerland

Gupta, Rahul; Sossan, Fabrizio; Paolone, Mario

doi:10.1016/j.apenergy.2020.116010

Cited by 56 publications

(38 citation statements)

References 56 publications

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“…Grid operators recur to a variety of means to store energy (from existing PHS to simply balancing the grid with centralized power generation). However, the capacity of the medium voltage grid is limited to host a high level of PV penetration in the low-voltage grid (Gupta et al, 2021). It can be worth answering this question by looking at how much money would be directly available in the district by using the revenues generated by the different demand/feed-in electricity prices.…”

Section: How Much Energy Storage Is Needed To Achieve Self-sufficiency?mentioning

confidence: 99%

Potential of Photovoltaic Panels on Building Envelopes for Decentralized District Energy Systems

et al. 2021

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The expected increase of the penetration of distributed renewable energy technologies into the electricity grid is expected to lead to major challenges. As a main stakeholder, authorities often lack the appropriate tools to frame and encourage the transition and monitor the impact of energy transition policies. This paper aims at combining relatively detailed modeling of the PV generation potential on the building’s envelope while retaining the energy system optimization approach. The problem is addressed as a multiobjective, mixed-integer linear programming problem. Compared to the existing literature in the field, the proposed approach combines advanced modeling of the energy generation potential from PV panels with detailed representation of the district energy systems, thus allowing an accurate representation of the interaction between the energy generation from PV and the rest of the system. The proposed approach was applied to a typical residential district in Switzerland. The results of the application of the proposed method show that the district can achieve carbon neutrality based on PV energy alone, but this requires covering all the available district’s rooftops and part of the district’s facades. Whereas facades are generally disregarded due to their lower generation potential, the results also allow concluding that facade PV can be economically convenient for a wide range of electricity prices, including those currently used by the Swiss grid operators. Achieving self-sufficiency at district scale is challenging: it can be achieved by covering approximately 42–100% of the available surface when the round-trip efficiency decreases from 100 to 50%. The results underline the importance of storage for achieving self-sufficiency: even with 100%, round-trip efficiency for the storage, very large capacities are required. However, energy demand reduction through renovation would allow reaching self-sufficiency with half of the PV and storage capacity required.

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Section: How Much Energy Storage Is Needed To Achieve Self-sufficiency?mentioning

confidence: 99%

Potential of Photovoltaic Panels on Building Envelopes for Decentralized District Energy Systems

et al. 2021

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“…The dual variable [π] in ( 6) is related to the electricity balance at the transformer (2). It indicates how much the overall objective function changes if the electricity exchange at the transformer varies at the timestep t in period p. If the objective function of the MP is the OPEX, the variable [π] can be interpreted as electricity price (currency / kWh) within the community.…”

Section: Dual Variablesmentioning

confidence: 99%

“…The aim in coming years is to drastically increase the level of PV integration, as it has been identified to be key on the way towards carbon neutrality [24]. Recent studies have demonstrated that the medium voltage level of the grid cannot host a large amount of PV installations [2].…”

Section: B Benefit Of Central Design Strategiesmentioning

confidence: 99%

“…This shows that the plan of decarbonizating the building stock requires a holistic concept, following a multi-energy approach. Additionally, the volatile power generation, which is caused by the fluctuation of solar irradiation, challenges the capacity of the electrical power grid [2]. Therefore, in addition to maximizing the solar integration, it is important to reduce the interaction of building energy systems (BESs) with the electrical power grid.…”

Section: Introductionmentioning

confidence: 99%

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Decomposition Strategy for Districts as Renewable Energy Hubs

Middelhauve

Terrier

Maréchal

2022

IEEE Open J. Power Energy

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In light of the energy transition, it becomes a widespread solution to decentralize and to decarbonize energy systems. However, limited transformer capacities are a hurdle for large-scale integration of solar energy in the electricity grid. The aim of this paper is to define a novel concept of renewable energy hubs and to optimize its design strategy at the district scale in an appropriate computational time. To overcome runtime issues, the Dantzig-Wolfe decomposition method is applied to a mixed-integer linear programming framework of the renewable energy hub. Distributed energy units as well as centralized district units are considered. In addition, a method to perform multi-objective optimization as well as respecting district grid constraints in the decomposition algorithm is presented. The decomposed formulation leads to a convergence below 20 min for 31 buildings and a mip gap lower than 0.2%. The centralized design enhances the photovoltaic penetration in the energy mix and reduces the global warming potential and necessary curtailment in order to respect transformer capacity constraints.

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“…The research conducted in [12] illustrated the PV hosting capacity effect on the harmonic voltage distortion of a low-voltage side, and it was concluded that there are significant risks in determining the hosting capacity without having information on background distortion. The research in [13] investigated the PV hosting capacity for Switzerland's medium voltage distribution grid, in which a battery energy storage was used to extend the PV hosting capacity. The authors of [14] evaluated the PV hosting capacity using integrated grid planning modelling approaches, in which a two-stage transmission and generation expansion model was combined with the distribution network PV hosting capacity assessment.…”

Section: Introductionmentioning

confidence: 99%

An Investigation into the Potential of Hosting Capacity and the Frequency Stability of a Regional Grid with Increasing Penetration Level of Large-Scale PV Systems

Alshahrani¹,

Omer²,

Su³

2021

Electronics

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It is widely believed that the incorporation of renewable energy to the current power grid is the way forward in achieving sustainable power generation. Currently, with the reduction of PV prices, many countries have started connecting PV systems into their grid network, hence leading to a sharp increase of the penetration levels of renewable electricity production. This will bring significant change in the load pattern and the ramping requirements of the grid’s conventional generation system due to the varying nature of the renewable energy generation. This significant change affects the stability of the grid frequency because it becomes more challenging for the system operators to maintain the equilibrium between the generation and load. Additionally, this significant change affects the PV system potential hosting capacity of the traditional grid because of the PV system’s curtailment in order to comply with the constraints of the grid’s conventional generation system. In this paper, the net load, grid frequency stability, and grid potential hosting capacity are evaluated in the situation of increasing the penetration level of large-scale PV systems generation into the grid. The results show that the grid operators will face increasingly variable net load patterns and steeper ramping events as the PV system penetration level increases. Additionally, the results show the requirement of having flexibility measures that target each grid constraint as the PV system penetration level increases.

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Countrywide PV hosting capacity and energy storage requirements for distribution networks: The case of Switzerland

Cited by 56 publications

References 56 publications

Potential of Photovoltaic Panels on Building Envelopes for Decentralized District Energy Systems

Potential of Photovoltaic Panels on Building Envelopes for Decentralized District Energy Systems

Decomposition Strategy for Districts as Renewable Energy Hubs

An Investigation into the Potential of Hosting Capacity and the Frequency Stability of a Regional Grid with Increasing Penetration Level of Large-Scale PV Systems

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