| Title |
A Study on the Global HVDC Trends and the Current Status of HVDC in Korea |
| Authors |
김권철(Kwonchul Kim) ; 김법수(Beopsoo Kim) ; 김인수(Insu Kim) |
| DOI |
https://doi.org/10.5370/KIEE.2023.72.2.321 |
| Keywords |
Asynchronous connection; current-source converter; HVDC; fault; and voltage-source converter |
| Abstract |
HVDC systems are increasingly playing an important role in energy transmission because they have technical, economic, grid operational advantages over conventional HVAC systems. For example, HVDC is preferable for long-distance bulk transmission and asynchronous interconnection between different frequency systems. Indeed, two HVDC linkages between the Jeju island and mainland (Haenam and Jindo) in South Korea were already constructed in 1998 and 2013, respectively. There are also several HVDC projects currently under construction in South Korea. Thus, the objective of this study is to review the global trends in HVDC energy transmission, including issues in Korean HVDC systems. For this purpose, this study examines the technical and operational advantages and disadvantages in HVDC systems. Then, the global trends, including the current status of HVDC systems in South Korea, are reviewed at the aspects of capacity, converter makers, and circuit breakers. Additionally, this study summarizes the main challenges for the smooth integration of HVDC systems into the conventional AC power systems. For this purpose, this study models a CIGRE HVDC benchmark model, generates a fault, modify the model and analyzes the transient responses of the benchmark model . |