HVDC to Grow Rapidly

Abstract

In the late 1880s, the war of the currents was waged by Nikola Tesla, who promoted AC current, and Thomas Edison, who promoted DC current. Ultimately, transmitting power over long distances with AC became the norm. This development was due to the ability to step up and step down the voltage through power transformers, which yielded a much lower cost of operation of AC over DC and led to the widespread acceptance of AC power transmission over DC. This could have spelled the end of DC transmission, but in the 1930s, through the use of mercury arc valves, it was shown that AC voltage could be transformed to higher levels of DC voltage.

Vibration Scale Model of a Converter Transformer Based on the Finite Element and Similarity Principle and Its Preparation

“…In recent years, with the acceleration of human economic and social development, energy and environmental issues have become more severe, and the imbalance between electricity load and energy base has become increasingly serious. The rapid development of high-voltage direct current transmission technology has made great contributions to solving this problem [1][2][3][4][5][6][7]. Converter transformers, which withstand mixed AC and DC voltages during operation, are key equipment in DC transmission systems.…”

Study on Seismic Reliability of UHVDC Transmission Systems

“…ese applications can bring great benefits for operation security and economy of the whole power system. Since 1972, the installed capacity of high-voltage direct current (HVDC) projects has reached over 200000 megawatts and continues to grow, with ratings of 7500 megawatts and ±800 kV on a single bipolar system [3]. With the continuous development of UHVDC transmission technology and the increasing number of actual engineering, the reliability of UHVDC transmission system has become an important factor affecting the reliability of the entire power system [4].…”