Browsing by Author "De Silva, RS"

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The Impacts of Deregulation of the Electricity Markets: A Comparative Study of International and Local Case Studies
(Electrical Engineering Society (EESoc) of the University of Moratuwa, 2023-05-31) De Silva, RS; Weerasekara, H; Dias, MSV; Siyambalapitiya, T; Gunawardana, M
The Energy sector plays a crucial role in promoting economic development and sustainability, and energy reforms are vital for achieving a sustainable economic growth. Within the energy sector, the electricity sector holds significant importance, and reforms in this sector can have considerable impacts on the broader economy of a country. This research paper aims to evaluate the impact of energy reforms on the electricity sector, specifically focusing on policies that promote competition, innovation, and technological advancements. Through a comparative analysis of international and local case studies from the USA, Ethiopia, Nigeria, India, Singapore, and Sri Lanka, this paper assesses the micro and macroeconomic effects of energy reforms on power pricing, power markets, electricity accessibility, innovation, and competitiveness. The historical development of state-owned electricity monopolies and their impact on competition, innovation, technological advancements, pricing, and service quality in the electricity sector is also examined. Furthermore, the study analyzes the role of government oversight and regulations in managing state-owned monopolies to ensure fair market practices. This research paper contributes to a more nuanced understanding of the complex relationship between state ownership and market competition in the energy sector. The findings of this study can inform policymakers and stakeholders in Sri Lanka and other developing countries on the potential benefits and drawbacks of expanding state-owned electricity monopolies in the context of ongoing energy sector reforms. Overall, this study provides insights for designing and implementing effective energy policies that promote sustainable economic growth and development.
item: Conference-Full-text
International geopolitical relations on Sri Lanka’s power and energy sector: opportunities and challenges for a sustainable transition
(Electrical Engineering Society (EESoc) of the University of Moratuwa, 2023-05) De Silva, RS; Pathirage, PAI; Thiranga, HGI; Fernando, ISM; Gunawardana, M
The energy crisis in Sri Lanka presents significant challenges for the country’s transition towards sustainable energy, given the outdated energy grid, lack of infrastructure, and heavy reliance on fossil fuels. The paper examines the short and long-term plans for generation expansion, as well as the new reforms set to be implemented in 2023. It analyzes the geopolitical relations between Sri Lanka and major international players in the energy sector, such as Japan, China, and India, and their respective energy sector reforms, including China’s Belt and Road Initiative and India’s Bay of Bengal Initiative. Through this analysis, the paper highlights the opportunities and challenges that exist for Sri Lanka in achieving a sustainable energy transition. It emphasizes the importance of leveraging geopolitical relations to shape the energy sector of a country and achieve sustainable energy goals. To this end, the paper provides recommendations, such as seeking partnerships and investments in renewable energy sources, promoting energy efficiency measures, and fostering international collaborations in research and development. This study provides valuable insights into the challenges and opportunities that exist for Sri Lanka in achieving a sustainable energy transition. It highlights the importance of taking a comprehensive approach that considers geopolitical relations and collaboration with international players to achieve sustainable energy goals.
item: Conference-Full-text
Optimizing Marx Impulse Generator Settings for Lightning Impulse Testing of Transformers: An Automated Approach for Enhanced Efficiency and Accuracy
(IEEE, 2023-12-09) De Silva, RS; Vinusan, U; Aldeniya, SK; Samarasinghe, R; Gunawardana, M; Abeysooriya, R; Adikariwattage, V; Hemachandra, K
The insulation strength of electrical equipment is required to be accurately tested to prevent insulation failures caused by abrupt overvoltages due to lightning strikes on power systems. In conventional methods, Marx impulse generators are used to produce impulse waveforms for testing. However, these methods often involve time consuming trial and error procedures and run the risk of damaging transformers during tests. This study proposes an algorithmic method for selecting resistor values in Marx generators to generate lightning impulse test waveforms. The proposed method establishes a circuit model based on the transformer’s frequency response and uses an optimization algorithm that combines a genetic algorithm with simulations of electromagnetic transients. The primary objective of the optimization process is to minimize the difference between the desired and simulated waveforms while obtaining optimum resistor block values. The proposed optimization-enabled method not only enhances accuracy in testing procedures but also reduces testing time and improves protection for test transformers. Consequently, these findings hold practical implications for electrical equipment manufacturers, test engineers, and researchers involved in insulation impulse testing, thereby promoting more reliable and effective testing procedures in the industry.