Photovoltaic power station

Summary

A photovoltaic power station, also known as a solar park, solar farm, or solar power plant, is a large-scale grid-connected photovoltaic power system (PV system) designed for the supply of merchant power. They are different from most building-mounted and other decentralized solar power because they supply power at the utility level, rather than to a local user or users. Utility-scale solar is sometimes used to describe this type of project. This approach differs from concentrated solar power, the other major large-scale solar generation technology, which uses heat to drive a variety of conventional generator systems. Both approaches have their own advantages and disadvantages, but to date, for a variety of reasons, photovoltaic technology has seen much wider use. , about 97% of utility-scale solar power capacity was PV. In some countries, the nameplate capacity of photovoltaic power stations is rated in megawatt-peak (MWp), which refers to the solar array's theoretical maximum DC po

Official source

https://en.wikipedia.org/wiki/Photovoltaic_power_station

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DC-DC Converter based on the Asymmetric Multistage Stacked Boost Architecture with Feed-Forward Control for Photovoltaic Plants

Georgios Mademlis, Alfred Rufer, Gina Kristin Steinke

A new feed-forward control technique for a DC-DC step-up converter based on the asymmet-ric Multistage Stacked Boost Architecture (MSBA) is presented in this paper. The proposed closed loop control scheme can provide improved accuracy in the steady-state operation and high dynamic performance. The asymmetric MSBA converter is a single output high-voltage DC-DC step-up converter that comprises several in-series connected capacitors with active voltage balancing circuits. The converter can attain high voltage ratios and thus, it is a suita-ble solution for the high voltage transmission requirements of the large photovoltaic (PV) plants. Selective simulation and experimental results are presented in order to validate the effectiveness and the operational improvements of the proposed control system.

2016

Sensitivity analysis on optimization of PV installation with thermal energy storage

Diane Delphine Remmy

The installation of solar panels on building roofs is increasing and considered as a potential solution to decarbonise the current energy system. However, how to make the best use of this energy is yet to be determined. In this project, two already developed optimization algorithms are compared to analyse the synergy between thermal storage and photovoltaic power production. The energy system includes photovoltaic panels, a heat pump and electric heaters. The conducted sensitivity study shows that the simulation of the thermal and electrical fluxes depends on whether self consumption or the minimization of the operational cost is favoured and thus impacts the usage of the produced power.

2020

Goal Increased energy supply from photovoltaics is a main priority in the “Energy Strategy 2050”. Within the research project “PV2050: Sustainability, market deployment and interaction to the grid – the impacts of advanced photovoltaic solutions” funded by the Swiss National Science Foundation, we analysed different options for the enhanced integration of photovoltaic (PV) technologies into the envelope of Swiss buildings using novel monolithic silicon heterojunction organometallic perovskite tandem cells (SHJ-PSC) with adaptions to improve the visual acceptance. In a joint effort of product developers, architects and scientists, this project aimed at providing pathways for the wide-scale use of PV façade solutions, and developing integrated designs based on emerging high-efficiency module technologies to improve the visual aspect and acceptance of PV systems installed in Switzerland. These so-called active façades using photovoltaic modules to produce electricity can provide a significant contribution to the energy transition away from fossil and nuclear fuels. 2. Methods We compared the environmental impacts of different types of construction for building façades with and without integrated monolithic silicon heterojunction perovskite tandem modules (SHJ-PSC) with improved visual design using a prospective life cycle assessment with a time horizon of 2025. The comparison includes a conventional roughcast façade, a wooden façade, and two different active façades using photovoltaic modules. Furthermore, we compared the environmental impacts caused by the construction of the different façades with the environmental impacts saved due to the electricity produced by the active façades composed of photovoltaic modules. In addition, we analysed the reduction in environmental impact of the building using building-integrated photovoltaics due to substitution of construction materials for the façade or roof. 3. Results The use of photovoltaic modules as façade or roof will increase the environmental impact of the façade or roof compared to the use of conventional construction materials. However, the environmental impacts over the whole life cycle are significantly reduced due to the PV electricity produced by the building. The environmental impacts of the BIPV façade are about two to three times higher compared to a conventional façade, but the savings due to the electricity produced by the BIPV are five to eight times higher than the impacts of the conventional façade. The use of BIPV panels in the façade of buildings will cause net savings of about 600 kg CO2-eq per square meter over the whole life cycle of BIPV façades, while simultaneously saving 100 kg CO2-eq per square meter of façade for the reduced material demand.

2019

Goal Increased energy supply from photovoltaics is a main priority in the “Energy Strategy 2050”. Within the research project “PV2050: Sustainability, market deployment and interaction to the grid – the impacts of advanced photovoltaic solutions” funded by the Swiss National Science Foundation, we analysed different options for the enhanced integration of photovoltaic (PV) technologies into the envelope of Swiss buildings using novel monolithic silicon heterojunction organometallic perovskite tandem cells (SHJ-PSC) with adaptions to improve the visual acceptance. In a joint effort of product developers, architects and scientists, this project aimed at providing pathways for the wide-scale use of PV façade solutions, and developing integrated designs based on emerging high-efficiency module technologies to improve the visual aspect and acceptance of PV systems installed in Switzerland. These so-called active façades using photovoltaic modules to produce electricity can provide a significant contribution to the energy transition away from fossil and nuclear fuels. 2. Methods We compared the environmental impacts of different types of construction for building façades with and without integrated monolithic silicon heterojunction perovskite tandem modules (SHJ-PSC) with improved visual design using a prospective life cycle assessment with a time horizon of 2025. The comparison includes a conventional roughcast façade, a wooden façade, and two different active façades using photovoltaic modules. Furthermore, we compared the environmental impacts caused by the construction of the different façades with the environmental impacts saved due to the electricity produced by the active façades composed of photovoltaic modules. In addition, we analysed the reduction in environmental impact of the building using building-integrated photovoltaics due to substitution of construction materials for the façade or roof. 3. Results The use of photovoltaic modules as façade or roof will increase the environmental impact of the façade or roof compared to the use of conventional construction materials. However, the environmental impacts over the whole life cycle are significantly reduced due to the PV electricity produced by the building. The environmental impacts of the BIPV façade are about two to three times higher compared to a conventional façade, but the savings due to the electricity produced by the BIPV are five to eight times higher than the impacts of the conventional façade. The use of BIPV panels in the façade of buildings will cause net savings of about 600 kg CO2-eq per square meter over the whole life cycle of BIPV façades, while simultaneously saving 100 kg CO2-eq per square meter of façade for the reduced material demand.

2019