If HVDC Is Better, Why Don’t We Use It Everywhere?

hvac transmission explained -    • Why Do Power Lines Hum and Glow?   hvdc, or high-voltage direct current, is the technology behind the world’s most powerful transmission links. while most high-voltage lines we see are ac, hvdc can carry massive amounts of power across thousands of kilometres with fewer losses. so why don’t we use it everywhere? in this video, we explain the complete difference between hvdc and hvac, including their advantages, limitations, and real-world applications. you will learn about issues in ac transmission like capacitive and inductive interference, the ferranti effect, skin effect, and corona loss – and why these challenges become severe over long distances. we also explore how hvdc avoids these problems, how ac is converted to dc inside converter stations using transformers, igbt and thyristor technologies, and why dc breakers are still a challenge. finally, we show where hvdc becomes economical compared to ac, and why it is mainly chosen for ultra-high voltage, long-distance power transmission. this video gives a clear and complete understanding of how hvdc really works. topics covered difference between hvdc and hvac capacitive and inductive interference in ac transmission ferranti effect, skin effect, and corona loss hvdc converter stations and power electronics why hvdc is used only for ultra-high voltage and long distances