D. Labed , M. Zellagui , M. Bouchehdane , A Bouzid , Protection of Distance for Groups of Decentralized Productions Connected in HVB Network, International Journal of Electrical and Power Engineering, Volume 2,Issue 4, 2008, Pages 225-234, ISSN 1990-7958, ijepe.2008.225.234, (https://makhillpublications.co/view-article.php?doi=ijepe.2008.225.234) Abstract: In this study, our aim is to study the reason of competition of two protections of distance equipped each one with its own reeclenchor in order to supervise a decentralized production connected out of antenna to a HVB line; this is dictated by an increasingly large need to reduce undistributed energy; stage with rare failures, as for the existing continuity of the network because of the considerable economy that represents. Keywords: Decentralized production;connection with HVB network;protection of distance;numerical relay of distance;SIPROTEC 7SA612