scholarly journals The assessment of integration effects accounting the stochasticity of wind and solar power plants generation in the Asian Power Grid

2019 ◽  
Vol 139 ◽  
pp. 01068 ◽  
Author(s):  
Leonid Trofimov ◽  
Ivan Trofimov
Keyword(s):  
Power Systems ◽  
Electricity Generation ◽  
Power Plants ◽  
Solar Power ◽  
Power Grid ◽  
Electric Load ◽  
Stochastic Generation ◽  
Solar Power Plants ◽  
The Stability ◽  
Total Integration

Electricity generation by wind and solar power plants (WPP and SPP) is characterized by the uncertainty of the time and generation volumes, and does not correlate with the demand determined by the graph of daily electric load. By using of the ORIRES optimization model, the integration effects associated with various scenarios of interstate power grid expansion are calculated. The stochastic generation of WPP and SPP creates a certain variation in the model solutions, but does not affect to the total integration effects. The article presents the calculations carried out on a large number of variations for wind and solar power generation. The stability (constancy) of total integration effects is shown, despite the stochastic generation of WPP and SPP in the considered energy power systems.

scholarly journals Pilot Low-Cost Concentrating Solar Power Systems Deployment in Sub-Saharan Africa: A Case Study of Implementation Challenges

2020 ◽  
Vol 12 (15) ◽  
pp. 6223
Author(s):  
Emmanuel Wendsongre Ramde ◽  
Eric Tutu Tchao ◽  
Yesuenyeagbe Atsu Kwabla Fiagbe ◽  
Jerry John Kponyo ◽  
Asakipaam Simon Atuah
Keyword(s):  
Electricity Generation ◽  
Power Plants ◽  
Large Scale ◽  
Solar Power ◽  
Low Cost ◽  
Sub Saharan Africa ◽  
Tracking Systems ◽  
Concentrating Solar Power ◽  
Solar Power Plants ◽  
Sub Saharan

Electricity is one of the most crucial resources that drives any given nation’s growth and development. The latest Sustainable Development Goals report indicates Africa still has a high deficit in electricity generation. Concentrating solar power seems to be a potential option to fill the deficit. That is because most of the components of concentrating solar power plants are readily available on the African market at affordable prices, and there are qualified local persons to build the plants. Pilot micro-concentrating solar power plants have been implemented in Sub-Saharan Africa and have shown promising results that could be expanded and leveraged for large-scale electricity generation. An assessment of a pilot concentrating solar power plant in the sub-region noticed one noteworthy obstacle that is the failure of the tracking system to reduce the operating energy cost of running the tracking control system and improve the multifaceted heliostat focusing behavior. This paper highlights the energy situation and the current development in concentrating solar power technology research in Africa. The paper also presents a comprehensive review of the state-of-the-art solar tracking systems for central receiver systems to illustrate the current direction of research regarding the design of low-cost tracking systems in terms of computational complexity, energy consumption, and heliostat alignment accuracy.

scholarly journals The Role of Local Citizen Energy Communities in the Road to Carbon-Neutral Power Systems: Outcomes from a Case Study in Portugal

Smart Cities ◽  
2021 ◽  
Vol 4 (2) ◽  
pp. 840-863
Author(s):  
Hugo Algarvio
Keyword(s):  
Power Systems ◽  
Electricity Markets ◽  
Power Plants ◽  
Large Scale ◽  
Solar Power ◽  
Hydroelectric Power ◽  
Solar Power Plants ◽  
Carbon Neutral

Global warming contributes to the worldwide goal of a sustainable carbon-neutral society. Currently, hydroelectric, wind and solar power plants are the most competitive renewable technologies. They are limited to the primary resource availability, but while hydroelectric power plants (HPPs) can have storage capacity but have several geographical limitations, wind and solar power plants have variable renewable energy (VRE) with stochastic profiles, requiring a substantially higher investment when equipped with battery energy storage systems. One of the most affordable solutions to compensate the stochastic behaviour of VRE is the active participation of consumers with demand response capability. Therefore, the role of citizen energy communities (CECs) can be important towards a carbon-neutral society. This work presents the economic and environmental advantages of CECs, by aggregating consumers, prosumers and VRE at the distribution level, considering microgrid trades, but also establishing bilateral agreements with large-scale VRE and HPPs, and participating in electricity markets. Results from the case-study prove the advantages of CECs and self-consumption. Currently, CECs have potential to be carbon-neutral in relation to electricity consumption and reduce consumers’ costs with its variable term until 77%. In the future, electrification may allow CECs to be fully carbon-neutral, if they increase their flexibility portfolio.

scholarly journals Performance Evaluation of Solar Power Plants: A Review and a Case Study

Processes ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 2253
Author(s):  
Mahmoud Makkiabadi ◽  
Siamak Hoseinzadeh ◽  
Ali Taghavirashidizadeh ◽  
Mohsen Soleimaninezhad ◽  
Mohammadmahdi Kamyabi ◽  
...  
Keyword(s):  
Power Plant ◽  
Solar Energy ◽  
Electricity Generation ◽  
Power Plants ◽  
Solar Power ◽  
Ocean Waves ◽  
Solar Power Plant ◽  
Large Area ◽  
Energy Technologies ◽  
Solar Power Plants

The world’s electricity generation has increased with renewable energy technologies such as solar (solar power plant), wind energy (wind turbines), heat energy, and even ocean waves. Iran is in the best condition to receive solar radiation due to its proximity to the equator (25.2969° N). In 2020, Iran was able to supply only 900 MW (about 480 solar power plants and 420 MW home solar power plants) of its electricity demand from solar energy, which is very low compared to the global average. Yazd, Fars, and Kerman provinces are in the top ranks of Iran, with the production of approximately 68, 58, and 47 MW using solar energy, respectively. Iran also has a large area of vacant land for the construction of solar power plants. In this article, the amount of electricity generation using solar energy in Iran is studied. In addition, the construction of a 10 MW power plant in the city of Sirjan is economically and technically analyzed. The results show that with US$16.14 million, a solar power plant can be built in the Sirjan region, and the initial capital will be returned in about four years. The results obtained using Homer software show that the highest maximum power generation is in July.

scholarly journals Short-term forecast methods of electricity generation by solar power plants and its classification

2019 ◽  
Vol 1260 ◽  
pp. 052033
Author(s):  
D A Tyunkov ◽  
A S Gritsay ◽  
V I Potapov ◽  
R N Khamitov ◽  
A V Blohin ◽  
...  
Keyword(s):  
Electricity Generation ◽  
Power Plants ◽  
Solar Power ◽  
Short Term ◽  
Short Term Forecast ◽  
Term Forecast ◽  
Solar Power Plants

scholarly journals The Role of the Interactions at the Tungsten Disulphide Surface in the Stability and Enhanced Thermal Properties of Nanofluids with Application in Solar Thermal Energy

Nanomaterials ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 970 ◽  
Author(s):  
Paloma Martínez-Merino ◽  
Antonio Sánchez-Coronilla ◽  
Rodrigo Alcántara ◽  
Elisa I. Martín ◽  
Iván Carrillo-Berdugo ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Thermal Properties ◽  
Density Functional ◽  
Power Plants ◽  
Solar Power ◽  
Intermolecular Forces ◽  
Hydroxyl Group ◽  
Concentrating Solar Power ◽  
Solar Power Plants ◽  
The Stability

Transition metal dichalcogenides (TMCs) exhibit unique properties that make them of interest for catalysis, sensing or energy storage applications. However, few studies have been performed into nanofluids based on TMCs for heat transfer applications. In this study, nanofluids based on 2D-WS2 are prepared by liquid phase exfoliation to analyze their potential usage in concentrating solar power plants. Periodic-Density Functional Theory (DFT) calculations were performed to rationalize the success of the exfoliation process. The hydrogen bond interaction between the hydroxyl group from PEG, which acts as a surfactant, and the S atoms of the WS2 surface stabilizes the nanosheets in the fluid. Electron localization function (ELF) analysis is indicative of the stability of the S–H interaction from WS2 with the molecules of surfactant due to the tendency to interact through weak intermolecular forces of van der Waals solids. Moreover, improvements in thermal properties were also found. Isobaric specific heat increased by up to 10% and thermal conductivity improved by up to 37.3%. The high stability of the nanofluids and the thermal improvements were associated with the high surface area of WS2 nanosheets. These results suggest that these nanofluids could be a promising heat transfer fluid in concentrating solar power plants.

Performance of the SSPS Solar Power Plants at Almeria

1988 ◽  
Vol 110 (4) ◽  
pp. 235-247 ◽  
Author(s):  
Gunnar Wettermark
Keyword(s):  
Power Systems ◽  
Power Plants ◽  
Solar Power ◽  
International Energy Agency ◽  
Electricity Consumption ◽  
Thermal Inertia ◽  
Energy Agency ◽  
Planning Stage ◽  
Receiver System ◽  
Solar Power Plants

The article summarizes the results of the operation of the two solar power plants of the SSPS project (Small Solar Power Systems) at Almeria, carried out within the framework of the International Energy Agency. The two power plants were built side by side in order to compare two thermal-electric techniques, one being a distributed collector system (DCS) with arrays of parabolic troughs and the other a central receiver system (CRS) with heliostats concentrating the sunlight onto the top of a tower. Each plant was constructed with a nominal capacity of 500 kWel and was expected to have a net yearly output on the order of 1 GWh.—Only the DCS plant was in operation sufficiently to enable an assessment of possible annual production of electricity. Through extrapolation one finds that the gross output of the built plant was maximal 0.25 GWh with an overall efficiency of 2.3 percent for a plant with 100 percent availability and no malfunctions. Internal electricity consumption correspondingly calculated amounts to 0.11 GWh resulting in only 0.14 GWh yearly net output. Using the experimental values from the CRS plant, it appears that its yearly gross output could have been similar to that of the DCS plant but at higher internal electricity consumption, particularly due to the trace heating of the heat transfer medium (sodium).—The technical reasons for the poor efficiency of the SSPS installation were largely that the solar climate was less favorable then assumed, dirt accumulated on the mirrors at a more rapid rate than foreseen, the nonsolar specific components were badly matched and yielded low efficiencies, and thermal inertia was crucial and almost overlooked in the planning stage.—A detailed loss analysis is presented in the article.

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