http://localhost:8081/jspui/handle/123456789/106 Wed, 16 Jul 2025 01:08:56 GMT 2025-07-16T01:08:56Z http://localhost:8081/jspui/handle/123456789/17576 Title: IMPROVED TECHNIQUE TO EVALUATE PERFORMANCE OF SOLAR THERMAL POWER PLANT Authors: Alam, Md Zafar Abstract: Energy is essential component of socio-economic development and economic growth. The production and assumption of energy is often linked to other major issues in society including poverty alleviation, environment degradation and security concerns. Energy is available in two forms, (solar, wind, small hydro etc) called renewable source of energy and (coal, petroleum, natural gas etc) called non renewable source of energy. In recent years solar energy has received a great attention as an easily utilizable source of renewable energy for providing electricity. Renewable energy like solar is indigenous and can help in reducing the dependency on fossil fuels. The solar energy can be utilized in two ways one is solar photovoltaic and other is solar thermal. In India solar thermal system is used generally for low temperature application i.e. solar water heating, cooking, air heating and drying, cooling and air-conditioning, water purification etc. Hence a limited work has been performed on solar thermal power generation. So performance evaluation of solar thermal power plant is necessary. Performance of solar thermal power plant is calculated by, Deterministic Approach (assigning single input value for a given output value) and Probabilistic Approach (input value is distributive that means every value is given in its all possible range and then corresponding to it we obtain the output). Till now most of the work has been done on Deterministic Approach to study the effect of environmental temperature, varying radiation value, characteristics of collectors and receiver material, circulating fluid etc. Under this dissertation work an attempt is made to evaluate the performance of solar thermal power plant (STPP) considering the effect of thermal inertia (i.e. Time taken by the fluid to achieve minimum temperature necessary to produce electricity) and the effect of wind speed on the performance of solar thermal power plant. Wind speed is responsible for convection losses in receiver, as wind speed increases Nusselt number increases which is directly related to convection loss. The efficiency of each components and then total efficiency of the system have been evaluated by simulating the result using System Analyzer Modeling (SAM) software developed by NREL Laboratory, USA. Based on the performance analysis about 0.53% of efficiency loss is found due to wind speed. However an overall efficiency of the plant is found to be 16.6%. Fri, 01 May 2015 00:00:00 GMT http://localhost:8081/jspui/handle/123456789/17576 2015-05-01T00:00:00Z http://localhost:8081/jspui/handle/123456789/17575 Title: PUMPED STORAGE HYDROPOWER IN INDIA AND ITS INTEGRATION WITH RENEWABLE ENERGY Authors: Pandey, Mantosh Kumar Abstract: Energy storage plays a vital role in security and stability of the power system. Energy storage systems are used to store the excess electricity generation during off-peak $ hours of the night. However, the introduction of renewable energy in the power system has renewed the need for energy storage as the generation from renewable sources poses multiple challenges to the power system due to its intermittent and variable nature. India has vast resources of renewable energy, having potential of almost 900 GW, and the study of renewable energy capacity addition trend indicates that by 2025-2030, India will be using very large quantity of renewable energy. Such high proportion of renewable energy generation needs large scale energy storage system to damp the intermittency and variability. Pumped Storage Hydropower (PSH) is the most reliable and proven large energy storage system. India is bestowed with large potential of PSH (96,524 MW) due to the mountainous terrain of the country. 1-lowever, out of this large PSI-I potential only 5% (4804 MW) potential is being utilized currently. The main reason for this under utilization of PSH potential has been the deficit of electricity in the country. As per Central Electricity Authority, in 2013-2014, all five electricity regions of the country experienced energy deficit totaling 4.2%. Layouts of potential PSH sites were drawn and elevation profiles were generated to calculate head, water-way and head ratio and slopes. It was observed that there is large variation between assessed and calculated head in most of the cases (107.5% being highest). In some instances, infeasible location of upper and lower reservoirs and technically impracticable long water-way distances (225 km in one case) were found and reported. In such discrepant cases alternate locations of reservoirs were studied and proposed. Further, the PSI-I layouts drawn were juxtaposed with transmission grid map, land use map and geology map to study the suitability of potential PSH sites for future development. Planning and design mechanisms were studied to explore the possibility of PSH development in discarded mine sites, existing/proposed dams etc. utilizing theses as reservoirs for PSH. Many states of India have abandoned mine sites e.g. Andhra Pradesh 1 HI has 15 such sites which should be explored for use as PSH reservoirs. A new concept called Gravity Power Module utilizing ground water was also reviewed. Planning of PSH development in India for renewable energy integration was also done by studying region wise and state wise power scenario and PSH potential available. Fri, 01 May 2015 00:00:00 GMT http://localhost:8081/jspui/handle/123456789/17575 2015-05-01T00:00:00Z http://localhost:8081/jspui/handle/123456789/17574 Title: OPTIMIZED DESIGN OF MINIGRID SYSTEM Authors: Kumar, Jaynendra Abstract: Small scale generations play significant role in electrical energy generation and electrification of rural areas where grid extension is either very costly or not possible. So in order to provide continuous, quality and reliable power to such areas, formation of Mini-end will be effective solution. In hilly region of India, hydropower potential is available but is not being completely utilized for power generation till date due to unavailability of grid, as rural areas are not utilizing the whole potential available, the most of the potential is treated as waste therefore there is a need to have a solution to this major problem. This dissertation presents optimized design of Mini-grid system. For the purpose of design of Mini-grid, 9 MHPs of Bagheswar district are selected which are connected with two sub stations. 'Ihese MHPs are working only for 8 hours in a day, and for remaining 16 hours, power generation is wasted. By interconnecting these MHPs, excess generated power from MHPs can be transferred to grid and these MHPs can be operated for 24 hours. Substituting the locations of MHPs and substations in GOOGLE EAR'IH, distances between MI-IFs and distances between MHPs and substations, Elevation of MHPs and substations, highest elevation and lowest elevation in any path, and path profile are computed. By using these data, reliability in terms of interruption time has been calculated. By using locations of MHPs and substations, distances, and reliability, optimum and reliable interconnected structure with the help MATLAB GENE1'IC ALGORITHM has been obtained. Fri, 01 May 2015 00:00:00 GMT http://localhost:8081/jspui/handle/123456789/17574 2015-05-01T00:00:00Z http://localhost:8081/jspui/handle/123456789/17573 Title: OPERATION CONTROL OF RENEWABLE ENERGY SOURCES USING FUZZY LOGIC CONTROLLER Authors: Harsh Abstract: The utilization of renewable energy resources for the electricity supply in decentralized mode has received considerable attention in recent years due to adverse environmental impacts and high fuel cost associated with conventional energy generation. Economic and geopolitical limitation on global non-renewable energy supplies has also forced many nations, especially the developing countries, to accelerate their use of local renewable energy sources. These resources have enough potential to be the important sources for power generation in the future, because of their environmental, social and economic advantages apart from public support and government incentives. There are however, several barriers preventing renewable energy resources to be competitive with conventional energy sources in the current power scenario, as the energy supply from these renewable energy resources cannot be regulated as per the demand and their integration with grid network is not easy. Uneconomical extension of the grid has led to generation of electric power at the end user facility and has been proved to be cost effective and to an extent efficient. The single technology approach, whether it is Solar Photo Voltaic (SPV) home lighting system, wind, biomass, micro hydro power or any other system cannot adequately meet the demands for long period due to high cost of the system as well as storage subsystem. To overcome these problems, the concept of Integrated Renewable Energy System (IRES) has been propounded in which the energy demands of an isolated area, which is far away from the utility grid, matches with the energy potential of locally available renewable energy resources. This Dissertation presents an extensive review on various issues related to Integration of Renewable Energy Resources i.e. Solar Photovoltaic (SPV) Cells, Micro Hydra Power, Biomass, Biogas, Wind Energy, etc. in association with the National Grid System and Diesel Generators based power generation. These independent renewable energy systems - have become much popular due to increase in the cost of conventional sources of energy and reduction in the prices of Solar PV panels, turbines of Wind and Biomass system. iv The thesis discusses about the issues related to integration configurations, storage options, sizing methodologies and system control. Uncertainties involved in designing an effective Integrated Renewable Energy System (IRES) based power generation system for isolated areas is accounted due to highly dynamic nature of availability of sources and the demand at site. Different methodologies adopted and reported in literature for sizing of the system components are presented. The thesis presents a system in which a common junction is formed of different sources of which the most economical output is attained having the least operating cost. - Intelligent Control Managing System is used for optimizing the Integrated System that prioritizes the sources in the order they should be connected to the load. The outcome of the proposed technique validates that the developed system would be dexterous mechanism yielding a very economical solution on one hand and increase in renewable sources of energy on the other. Fri, 01 May 2015 00:00:00 GMT http://localhost:8081/jspui/handle/123456789/17573 2015-05-01T00:00:00Z