scholarly journals Exploring Wind and Solar PV Generation Complementarity to Meet Electricity Demand

Energies ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 4132 ◽  
Author(s):  
António Couto ◽  
Ana Estanqueiro
Keyword(s):  
Power Systems ◽  
Power System ◽  
Solar Power ◽  
Extreme Values ◽  
System Development ◽  
Power Source ◽  
Electricity Demand ◽  
Energy Deficit ◽  
Solar Pv ◽  
Renewable Power

Understanding the spatiotemporal complementarity of wind and solar power generation and their combined capability to meet the demand of electricity is a crucial step towards increasing their share in power systems without neglecting neither the security of supply nor the overall cost efficiency of the power system operation. This work proposes a methodology to exploit the complementarity of the wind and solar primary resources and electricity demand in planning the expansion of electric power systems. Scenarios that exploit the strategic combined deployment of wind and solar power against scenarios based only on the development of an individual renewable power source are compared and analysed. For each scenario of the power system development, the characterization of the additional power capacity, typical daily profile, extreme values, and energy deficit are assessed. The method is applied to a Portuguese case study and results show that coupled scenarios based on the strategic combined development of wind and solar generation provide a more sustainable way to increase the share of variable renewables into the power system (up to 68% for an annual energy exceedance of 10% for the renewable generation) when compared to scenarios based on an individual renewable power source. Combined development also enables to reduce the overall variability and extreme values of a power system net load.

Hybrid hydropower-connected floating solar PV plants: impact of the downstream water release constraint

2021 ◽  
Author(s):  
Stanislas Merlet ◽  
Magnus Korpås ◽  
Bjørn Thorud
Keyword(s):  
Renewable Energy ◽  
Power Systems ◽  
Large Scale ◽  
Solar Power ◽  
Hydropower Plant ◽  
Solar Pv ◽  
Reservoir Operations ◽  
Water Release ◽  
Renewable Power ◽  
Scale Integration

<p>Solar and wind power continue to dominate the renewable energy expansion, jointly accounting for more than 90% of the new capacity installed in 2019. Hydropower, however, still accounts for 47% of the 2,537 GW of global renewable power in operation. Solar power continued to lead the yearly expansion, for the fourth year in a row, with an annual increase of +20% while hydropower capacity increased by +1%. However, the inherent intermittency and stochastic nature of solar PV is a well-known obstacle to the further large-scale integration of the technology in existing power systems. Large-scale reservoir hydropower offers a cost-competitive, mature and dispatchable alternative that can provide both production flexibility and storage. Nonetheless, the costs of large hydropower are highly site-specific and new capacity development has been more and more constrained by substantial environmental and social impacts in many places worldwide. Solar power and hydropower resources have been identified to be quite complementary and hybrid plants could have many flexibility benefits in addition to the increase of renewable energy production. In this context, floating solar PV (FPV) on hydropower reservoirs is emerging as a relevant solution to accommodate both energy sources at the same location.</p><p>Adding FPV to an existing hydropower plant, aiming at hybridizing the output, might impact its reservoir operations and water-related constraints need to be carefully considered. Solar PV can contribute to saving water on mid- to long-term scheduling considering that solar energy generation corresponds in some extent to non-turbined water, i.e. saved energy. Besides, on the short-term time scale, one of the main benefits is that hydropower could, in some extent, compensate for the variability of PV generation by its rapidly adjustable output. In practice, a utility-scale solar PV plant could lose several MW of generation in seconds, if a large cloud passes, for example. To avoid consequences on the power grid, this energy loss would need to be translated almost immediately (according to available capacity and ramp rates capabilities) to hydropower generation, meaning substantial (and potentially more frequent) surges in released water downstream.</p><p>The presentation investigates these opportunities and challenges linked to reservoir operations of hybrid hydropower-connected floating solar PV plants and provide inputs on optimal solutions.</p>

scholarly journals SOLAR PV POWER INTERMITTENCY AND ITS IMPACTS ON POWER SYSTEMS – AN OVERVIEW

2019 ◽  
Vol 16 (2) ◽  
pp. 142 ◽  
Author(s):  
M. Albadi
Keyword(s):  
Power Systems ◽  
Power System ◽  
Electricity Markets ◽  
Power Plants ◽  
Distribution Systems ◽  
Solar Power ◽  
Solar Pv ◽  
Thermal Generation ◽  
Power Characteristics ◽  
Solar Power Plants

Although solar photovoltaic (PV) systems are environmentally friendly, policy makers and power system operators have concerns regarding the high penetration of these systems due to potential impacts of solar power intermittency on power systems. Understanding the nature of this intermittency is important to make informed decisions regarding solar power plants, size and location, transmission and distribution systems planning, as well as thermal generation units and electricity markets operations. This article presents a review of solar PV power characteristics and its impacts on power system operation.

scholarly journals A Novel Extension Decision-Making Method for Selecting Solar Power Systems

2013 ◽  
Vol 2013 ◽  
pp. 1-6
Author(s):  
Meng-Hui Wang
Keyword(s):  
Decision Making ◽  
Solar System ◽  
Power Systems ◽  
Power System ◽  
Solar Power ◽  
Important Task ◽  
Extension Theory ◽  
Solar Systems ◽  
Load Demand ◽  
Generating Capacity

Due to the complex parameters of a solar power system, the designer not only must think about the load demand but also needs to consider the price, weight, and annual power generating capacity (APGC) and maximum power of the solar system. It is an important task to find the optimal solar power system with many parameters. Therefore, this paper presents a novel decision-making method based on the extension theory; we call it extension decision-making method (EDMM). Using the EDMM can make it quick to select the optimal solar power system. The paper proposed this method not only to provide a useful estimated tool for the solar system engineers but also to supply the important reference with the installation of solar systems to the consumer.

Integral Models of Developing Electric Power Systems

2013 ◽  
Vol 2 (4) ◽  
pp. 44-58 ◽  
Author(s):  
E. V. Markova ◽  
I. V. Sidler ◽  
V. V. Trufanov
Keyword(s):  
Power Systems ◽  
Power System ◽  
Electric Power ◽  
System Development ◽  
Electric Power Industry ◽  
Electric Power System ◽  
Integral Model ◽  
Volterra Equations ◽  
Prony Method ◽  
Optimal Service

The first part of the paper is devoted to the problem of optimal control in the area of electric power industry which is described on the basis of a one-sector variant of Glushkov integral model of developing systems. The authors consider the ways uncertain conditions of future electric power system development influence the optimal service life. The results of calculations for the Unified Electric Power System of Russia are presented and analyzed. The second part of the paper deals with the application of Prony method to identification of the Volterra equations in the two-sector models of developing systems. The authors suggest a numerical method for identifying the efficiency function parameters. An illustrative example is given.

scholarly journals Study of auxiliary power system for electroplaters on the thermal engine basis

2019 ◽  
Vol 124 ◽  
pp. 01004
Author(s):  
R. V. Vyatkin ◽  
A. N. Tikhomirov ◽  
D. A. Kolesnichenko
Keyword(s):  
Power Systems ◽  
Power System ◽  
Electric Vehicle ◽  
Power Source ◽  
Design Work ◽  
Auxiliary Power ◽  
Low Charge ◽  
Design And Testing

The article describes the design and testing of an auxiliary power system for a light commercial electric vehicle. In paper described research about load modes of auxiliary power system for maintaining performance of electric vehicle under low-charge conditions. The article describes the design work and the installation of the necessary components for the research. The authors describe the experiment of charging the traction battery from an auxiliary power source. The results of the study are presented, including an assessment of the effectiveness of using auxiliary power systems.

scholarly journals Photo Voltaic (PV) Cell Characteristics Design using M.File in Matlab

2020 ◽  
Vol 9 (3) ◽  
pp. 55-57
Keyword(s):  
Solar Cells ◽  
Solar Energy ◽  
Power System ◽  
Solar Power ◽  
Electric Power System ◽  
Solar Pv ◽  
Essential Information ◽  
Pv Module ◽  
Pv Cell ◽  
Photo Voltaic

Solar energy is an emergent trend suitable for power production in both industrial and household appliances. The distributed renewable resource like solar energy is projected to act as a major responsibility in the forthcoming smart grid applications and technology. For the generation of electricity from solar power, it is essential to analyze the performance characteristics of the solar Photo Voltaic (PV) module, for instance, the power output of a PV panel and the prominent conversion efficiency. The performance of the electrical characterisation of a Photo Voltaic (solar) cells or module delivers the bond among the generated current and voltage on a typical solar PV cell which is termed as a V-I characteristic curve of solar cells. In this paper, a single diode correspondent circuit has been considered to inspect Voltage (V-I) and Power (P-V) characteristics for different insolation levels of a typical 100 W polycrystalline solar PV module. In order to validate the graphical depiction of the solar cell or module operation, M.file in MATLAB software was used. The generated characteristic curves summarise the connection between the current (I) and voltage (V) at the existing state of temperature with different irradiance. The obtained Power-Voltage (P-V) characterisation grant the essential information for building a solar electric power system to drive close up to its maximum peak powerpoint while feasible. The resulted graphs reveal that while considering the single diode model, the level of insolation varies with series resistance and by the generation of photo-current which in turn delivers the rapport of efficiency of solar cells. The proposed system is the initial step to learn a hybrid power system where some other renewable sources can be combined along with a solar power generation system.

scholarly journals Powering a Home with Just 25 Watts of Solar PV. Super-Efficient Appliances Can Enable Expanded Off-Grid Energy Service Using Small Solar Power Systems

2015 ◽  
Author(s):  
Amol A. Phadke ◽  
Arne Jacobson ◽  
Won Young Park ◽  
Ga Rick Lee ◽  
Peter Alstone ◽  
...  
Keyword(s):  
Power Systems ◽  
Solar Power ◽  
Solar Pv ◽  
Energy Service

scholarly journals Offshore Oilfield Hybrid Renewable Power Systems Based on AI Algorithm

2020 ◽  
Vol 191 ◽  
pp. 02002
Author(s):  
Qingguang Yu ◽  
Zhicheng Jiang ◽  
Yuming Liu ◽  
Gaoxiang Long
Keyword(s):  
Power Systems ◽  
Power System ◽  
Structural Optimization ◽  
Optimization Model ◽  
Extraction Process ◽  
Interconnected Power System ◽  
Renewable Power ◽  
Load Removal ◽  
Fault Mode ◽  
Offshore Oil

This paper proposes a structural optimization model for the offshore oilfield interconnected power system. The model focuses on evaluating the reliability of the system. It is found that the N−1 fault is the primary fault mode leading to severe power loss due to the probability of fault occurrence and the fault consequence according to the statistics of the historical fault information of the offshore oilfield power system. Considering the characteristics of the offshore oil extraction process, the priority of load removal in different processes under different fault conditions is different. Comprehensively considering the above factors, the model uses the minimum load shedding model that considers the load priority level in the objective function to calculate the power outage losses in all N−1 fault states of the system. The test results of numerical examples prove that the optimized solution of the structural optimization model can achieve a better balance between economy and reliability.

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