Browsing by Author "Absar, Mohammad Nurul"

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Design a Grid Connected Hybrid Power System for Power Quality Improvement
(2020-07-28) Absar, Mohammad Nurul
With the increasing of population and industrial revolution rapidly, has growing the demand of electricity in Bangladesh. The main source of electricity generation is natural gas and fossil fuel which contributes almost 90% of the total generation which is treated for the environment. The Government of Bangladesh has set up a plan to generate approximately 4190 MW of the country's total electricity from renewable source within 2030. But grid connection of renewable energy generation is a difficult because of it randomness of sources, non-linear characteristics etc. So power quality and reliability is important concern for design a renewable system. For solving the very basic light energy crisis, especially in rural, isolated and the coastal community of Bangladesh, it was proposed to design a hybrid renewable energy based grid connected power system. For design, optimization of the proposed system, Teknaf Rohingya Refugees camp have chosen because of nowadays refugee crisis has become very acute in Bangladesh. The Refugees camp is mainly the backward site in Bangladesh where there is no electricity available in those camp areas where renewable energy sources are mostly common. The system is designed using renewable energy (solar and wind) for refugee camp that will fulfill the basic electricity demand which upgrade the Refugees community. HOMER software used for power generation and optimization analysis and ETAP software used for power quality analysis of design system. The simulated results shown that hybrid renewable energy systems are the most economical and had fulfilled basic electricity demand of Refugees camp. Moreover, 1.5 MW solar wind grid connected hybrid system is designed where 62% electricity are renewable fraction and remaining is consumed from grid. This system met an average 5.4 MW load per day at a cost rate of $0.12/kWh. This is a reliable and stable arrangement, because the lack of electricity at the time of the peak load is filled in from the grid and during off-peak hours the additional power from the renewable energy source supplied to grid by improving the power quality using Static VAR compensator Device. On an average bus voltage improves 1.2% and branch losses reduce 0.94% and enhance power transfer capability from 314.7 kW to 317.7 kW. It is a vital energy solution for refugee camps which locate in rural areas.
Governance in union parishad: problems and prospects
(BRAC University, 2006-09) Absar, Mohammad Nurul; Rahman, Dr. M. Matiur