Browsing by Author "Wijayapala, A"

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item: Conference-Full-text
Challenges and opportunities for introducing end to end electricity market in Sri Lanka: lessons from international case studies.
(Electrical Engineering Society (EESoc) of the University of Moratuwa, 2023-05-31) Witharama, M; Senarathna, N; Somathilaka, S; Wijayapala, A; Gunawardana, M
This paper analyzes the challenges and opportunities for introducing an end-to-end electricity market in Sri Lanka, drawing lessons from international case studies. The Sri Lankan electricity sector faces several issues, including a state-controlled utility that is not financially efficient, hesitant to innovate and failure to stick with a fixed policy. The paper reviews literature on electricity market liberalization and analyzes case studies from Denmark, Australia, Pakistan, Japan,California and other countries to identify the requirements, benefits, and drawbacks of an end-to-end electricity market. The analysis includes a SWOT analysis of the Sri Lankan power sector, specific challenges that may arise in the Sri Lankan context, and suggestions to overcome them. The paper also discusses the impacts of an electricity market on different stakeholder groups, including consumers, producers, employees, and policymakers. The conclusion highlights the main findings and arguments, suggestions for policymakers and other stakeholders, and key lessons that can be learned from other countries experiences.
item: Thesis-Full-text
Solar-hydrogen powered proton exchange membrane fuel cell(PEMFC) modeling and simulation
Wickremaarachchi, SK; Udawatta, L; Wijayapala, A
The main scope of this study provides a research insight on direct solar Hydrogen-proton exchange membrane fuel cell concept and the description of fuel cell operating principles is followed by a modeling and simulation of the current fuel cell technology together with issues concerning Hydrogen fuel. Appropriate applications for current and perceived potential advances of fuel cell technology are discussed. Fuel cell modeling is helpful for fuel cell developers because it can lead to fuel cell design improvements, as well as, better, and more efficient fuel cells. The model must be robust and accurate and be able to provide solutions to fuel cell problems quickly. A good model should predict fuel cell performance under a wide range of fuel cell operating conditions. Even a modest fuel cell model will have large predictive power. The necessary improvements for fuel cell performance and operation demand better design, materials, and optimization. These issues can only be addressed if realistic mathematical process models are available. Fuel cells are one of the cleanest and most efficient technologies for generating electricity. Since there is no combustion, there are none of the pollutants commonly produced by boilers and furnaces. For systems designed to consume hydrogen directly, the only products are electricity, water and heat. Fuel cells are an important technology for a potentially wide variety of applications including on-site electric power for households and commercial buildings; supplemental or auxiliary power to support car, truck and aircraft systems; power for personal, mass and commercial transportation; and the modular addition by utilities of new power generation closely tailored to meet growth in power consumption. These applications will be in a large number of industries worldwide. The theoretical development of the proton exchange membrane fuel cell (PEMFC) is discussed with the areas under electro chemistry, thermal distribution, and pressure. The particular simulations and modeling are discussed by using modeling software
item: Conference-Extended-Abstract
Synchronizing and protection relay for distributed generators
(2010) Karunaratne, PU; Karunarathna, R; Jayawickrama, R; Lakmal, S; Jayawardene, A; Karunadasa, JP; Wijayapala, A
This document contains an introduction about our final year project which is synchronizing and protection relay for distributed generators. The design procedure, current results and further enhancements are also included in this document.