Hvdc transmission is a comprehensive text that facilitates in-depth study of hvdc transmission, including inception, working principles, advantages and disadvantages, and state-of-the-art hvdc transmission systems. Topics associated with dc transmission have been included, in detail, to support this study. This text is useful for undergraduate students of electrical or electrical and electronics engineering, postgraduate students of the same subjects who have opted for an elective course on hvdc engineering, and field engineers and professionals connected with hvdc systems.