Chandra Kumar, Ponmudi (2023) Comparative study of high voltage direct current and high voltage alternating current for power transmission system in Malaysia. Master dissertation/thesis, UTAR.
Abstract
A high Voltage Direct Current (HVDC) power system is used for direct current transmission of bulk power over long distances. By comparison to AC transmission lines, HVDC lines are more economical and efficient. HVDC has been used for interconnections between AC networks that have different frequencies. Over the past 100 years, AC transmission is more popular and well developed due to the easier and cheaper voltage conversion technology by using transformer. Voltage conversion of DC current is more complicated and expensive. As the technologies and engineer solution for dc transmission is getting mature, HVDC power transmission system is getting popular and widely used especially for super high voltage transmission over extremely long distance. The recent form of HVDC transmission uses expertise established comprehensively in 1930s in Sweden and in Germany. Initial profit-making systems comprised one in the Soviet Union in 1951 between Moscow and Kashira, and a 100kV, 20MW system between Gotland and mainland Sweden in 1954. Earlier to the Chinese project of 2019, the extensive HVDC connection in the world was the Rio Madeira link in Brazil, which consists of two bipoles of 600kV, 3150MW each, linking Porto Velho in the state of Rondônia to the Sao Paulo area with a distance of more than 2,500km. The purpose of this study is to discuss what HVDC is, how HVDC can be integrated with today’s power transmission system, methods, and solutions of integration of HVDC with HVAC transmission system, the advantages of application of HVDC over HVAC and current application of HVDC in Malaysia.
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