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Subject: Electrical Engineering × Author: Bohra, Vijay × End date: 2019 × Type: Thesis × Thesis Type: M.Tech. ×
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    ThesisItemOpen Access
    Analysis of excessive unevenness in load curve characteristics due to solar energy incorporation into grid & the possible solution
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2019-08) Bohra, Vijay; Arora, Sudha
    The global average temperature is rising at significant rate, so is our concern towards it. One of the major contributor to rising temperature, is the green house gases emitted from power sector due to its high dependence on conventional sources like coal and petroleum products. Various measures like incorporating renewable energy into system are being taken to reduce the share of conventional (fossil fuel based) plants in the energy sector. Among renewable sources, solar energy has the highest growth rate (24% growth) due to its universal acceptance features like availability of sun on earth surface, ease of maintenance, ease of installation, no moving parts, negligible pollution level etc. But, with high solar incorporation, a major problem which is foreseen for every country is significant dip in power requirements from conventional energy sources, resulting in dip in their load curve during day time which could decrease the efficiency of these conventional plants (mostly thermal plants) and leads to excessive curtailment of energy due to over generation. A need for such a system was felt where energy could be stored (acting load during peak hours) and released (when there is excessive ramp to reduce pressure from thermal power plants). So, the missing link was searched and energy storage system was found to be a possible solution to the above mentioned problems. Among options like pumped hydro storage, compressed air storage, and battery energy storage, battery energy storage system can be best solution because of its wide availability and applicability. Taking all these things into account, the first part of this thesis work deals with analysis of, unevenness in load curve due to solar energy incorporation. For this, load is varied in a way that resembles a typical load curve, on a SIMULINK model of grid-tied PV system, and the percentage share of load met by PV and grid are recorded and analysed. In the second part, a Battery Energy Storage System (BESS) is designed in SIMULINK as the solution to above problem.