Forum article with pictures of equipment ( in Russian) http://www.cigre.ru/rnk/materials/docs/1953-1998_Khoudiakov_VEI_Memorias.pdf Arcticle of history of HVDC with a picture of a valve used at HVDC Volgograd-Donbass HVDC transmission lines Electric power infrastructure in Russia Electric power infrastructure in Ukraine Energy in the Soviet Union Energy infrastructure completed in 1965 1965 establishments in the Soviet Union