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INVESTIGATION OF THE TRANSITION PROCESS OF PARALLEL OPERATION OF A SOLAR POWER PLANT AND THE GRID UNDER EMERGENCY DISTURBANCE
Solar energy, as one of the types of green energy, is widely studied by researchers from different regions of the world. Practice shows that the generation of clean energy at solar power plants (SPP) 1s not always constant, and depends on some external factors, for instance, weather conditions, emergency disturbances, etc. Parallel operation of the solar power plant and the grid eliminates some problems, in particular, fluctuations in the frequency of current due to a shortage/excess of electricity, as well as the use of batteries. Therefore, an infinite power grid 1s a large accumulator that can compensate for such fluctuations. This paper deals with the analysis and investigation of electromagnetic transients during a parallel operation of the SPP and the grid under a short-circuit disturbance. A block diagram and mathematical model of the SPP are developed in the MATLAB package together with Simulink and Power System Blockset. Dynamic and static modes of the parallel operation of the SPP and the grid are analyzed. Waveforms of voltages and currents at the inverter output during a threephase short circuit are given. The developed model supports the analysis of currents, voltages, and capacities while various disturbances are simulated.
Conference Proceeding
Desert energy : a guide to the technology, impacts, and opportunities
\"This book examines the key technologies being deployed in an effort to tap the potential presented by world's deserts for siting large-scale solar power applications, and surveys the feasibility of such projects given the remoteness and the hostility of these environments Focusing on large scale photovoltaics and concentrating solar thermal power, it explains how the systems work, projects that are being planned, the required scales, and the technical difficulties they need to overcome to function effectively. It then moves on to examine the economics of such projects (including financing) and the social and environmental effects they may have. Illustrated throughout by reference to built or planned projects, and written in a clear, jargon-free style, this is a must-read for anyone interested in the development of large scale solar applications\"-- Provided by publisher.
Book
Solar Chimney Power Plants
Solar Chimney Power Plants: Numerical Investigations and Experimental Validation summarizes the effect of the geometrical parameters of a solar chimney on the airflow behavior inside a solar chimney power plant. Chapters in this experimental handbook are presented in two parts with the goal of equipping readers with the information necessary to study and determine key factors which affect the performance of the solar chimney power plant.In the first part, the authors present a simulation developed by using computational fluid dynamics (CFD) modeling software ANSYS Fluent to model the airflow. The adopted CFD models include k-ɛ turbulence model, the DO radiation model and the convection heat flux transfer model. These models have been validated with anterior experimental results.In the second part, the simulated models are then tested with alternate geometric configurations of the solar chimney power plant. The numerical studies allow readers to consider ways to expand on the design optimizing of the solar chimney when constructing a prototype. Geometrical parameters include the height, the diameter of the chimney and the dimensions of the solar collector and their effect on the temperature and air pressure is documented to validate models used for experimental simulations.The handbook also includes a study of an experimental prototype, constructed at ENIS. The researchers have gathered data on the environmental temperature, distribution of the temperature, air velocity and the power output generated by the turbine, the solar radiation and the gap of temperature in the collector of the prototype.
eBook
Using solar farms to fight climate change
\"Describes what solar farms are, how they are better for the environment than some forms of generating power, and how they can be used more in the future to fight climate change\"-- Provided by publisher.
Book
Evaluating solar power plant sites using integrated GIS and MCDM methods: a case study in Kermanshah Province
This study utilizes an integrated Geographic Information System (GIS)-based Multi-Criteria Decision-Making (MCDM) approach to perform Solar Power Plant Site Selection (SPPSS) in Kermanshah Province, Iran. It introduces a novel group weighting method, the Dempster-based Best-Worst Method (DBWM), which combines weights vectors derived from experts’ opinions. The study also conducts a comprehensive sensitivity analysis comparing four GIS-based models for SPPSS. Findings indicate that the Inverse Distance Weighted (IDW) method is the most precise for interpolation, which was subsequently applied in the analysis. Results demonstrate that the GIS-based DBWM-Technique for Order Preference by Similarity to Ideal Solution (GIS-based DBWM-TOPSIS) model is the most stable, identifying slope as the primary criterion for SPPSS. Based on this model, 3% of the area is classified as very low suitability, 9% as low, 24% as moderate, 33% as high, and 31% as very high suitability. The study highlights the substantial impact of selecting appropriate spatial analysis techniques and uses normalization to standardize input criteria with varied units and ranges, enhancing comparability within the MCDM process. Eslamabad-e Gharb, Kangavar, and Gilan-e Gharb counties emerged as the most suitable locations for solar power plant (SPP) development.
Journal Article
A GIS-based catastrophe approach for optimal site selection for installation of solar power plants, East Azerbaijan province case study, Iran
Due to depletion of fossil fuels and environmental issues, renewable energy consumption is increasingly growing. Solar energy as the most abundant renewable energy source available is becoming more popular around the world. In the current study, the optimal sites for solar photovoltaic power plants in East Azerbaijan province, Northwest Iran, were investigated. A total of 17 variables were categorized into four groups: climatic, geomorphological, environmental, and access-economic. In order to integrate the variables, a model based on catastrophe theory in the context of GIS was applied. The relative importance and weight of the criteria are computed based on the internal mechanism of the catastrophic system, thus greatly reducing subjectivism and uncertainties of the decision-making process. Five optimal sites located in the western part of the province within the counties of Malekan, Bonab, Ajabshir, Shabestar, and Tabriz were identified as suitable sites for the construction of solar photovoltaic power plants, where there are ideal conditions in terms of many environmental-human variables such as high potential of solar energy, high sunshine hours, low relative humidity, suitable slope, poor vegetation, distance to protected areas, proximity to the population centers, excellent access to the roads and to the main power lines.
Journal Article
Simulation of 1 MWe hybrid solar power plant by the use of nano-fluid with eccentric backup system
In past years, concentrated solar power (CSP) with an energy backup system has been a unique renewable energy utilization system among intermittent renewable energy systems. It could allow a CSP plant to operate as a base load system in the future. This paper simulates a solar power plant for 1 MWe. Parabolic trough collector (PTC) array and linear Fresnel reflector (LFR) field attached consecutively to produce superheated steam at 40 MPa. The Rankine cycle has been used to run the steam turbine and an electricity generator is attached to a steam turbine to convert mechanical energy into electrical energy. Maximum temperature attained at the turbine inlet is 418.13 ˚C in 12:00–13:00 time slot in the month of January. Results show that solar power plant is feasible to produce 1 MWe. The minimum value of the power produced by the generator is 1.01 MWe in November in the 10:00–11:00 time slot whereas the maximum value of generated power is 1.57 MWe in December in the 11:00–12:00 time slot. The overall efficiency of power generated by the Rankine cycle is 21.25% in January in the 10:00–11:00 time slot. An energy storage system is attached to the system to work at night hours or in cloudy weather conditions.
Journal Article
Land Suitability Investigation for Solar Power Plant Using GIS, AHP and Multi-Criteria Decision Approach: A Case of Megacity Kolkata, West Bengal, India
Renewable energy sources are the most necessitated natural energy to reduce fossil fuels globally. Fossil fuel is the most valuable and limited resource on the planet, but on the other hand, renewable energy creates less pollution. Solar energy is the most effective renewable resource for daily use. Solar power plants are necessary for domestic and daily use. Remote sensing and geographic information technology (GIS) were used for this study to delineate the possible site selection of solar power plants in Kolkata and the surrounding area in West Bengal, India. The analytical hierarchy process (AHP) and the multi-criteria decision-making process (MCDA) were used for each weight calculation and ArcGIS v10.8 was applied for weighted overlay analysis (WOA) for delineation of the result. The site suitability map was developed using a pairwise comparison matrix and the weights were calculated for each criterion. The suitability map was divided into five categories, from not suitable to very highly suitable. A total of 474.21 km2 (10.69%) of the area was classified as very highly suitable whereas 249.54 km2 (5.62%) area was classified as not suitable because of the water area and east Kolkata wetland. A total of 1438.15 km2 (32.43%) of the area was classified as highly suitable for a solar power plant. The Kolkata megacity and water body locations were identified as moderate to not suitable sites. Very high and high-potential sites were identified 2 to 5 km from the central business district (CBD) location, which is Dharmotala. Renewable energy source is needed in the megacity of Kolkata. If solar power plants are contracted then the demand for fossil fuel will be reduced one day, and that will help the environment as well as the society in terms of sustainable development. This study result is helpful for administrators, urban planners, developers, and other stakeholders for the implementation and development of a new solar power plant in the study area.
Journal Article
Features of the Design of a Self-Draining Solar Power Plant with an Active Element
The calculation dependences for designing a self-draining solar power plant (SDSPP) with an active element in the form of a narrowing device of the Venturi tube are obtained. The calculation dependences for the transient modes in an SDSPP are analyzed from the point of view of the representations of the nonlinear nonequilibrium thermodynamics. It is shown that two steady operation modes of an SDSPP are possible: with and without a break of the jet. It is specified that both these modes merge when the consumption of the heat transfer fluid is equal to the critical value, for which the contraction ratio of the flow in the Venturi tube is defined, and differ when their values are higher than the critical value.
Journal Article