A multi-algorithm based integrated protection scheme for distribution systems

This paper presents an integrated protection scheme for distribution systems. The concept of integrated protection is introduced, in which a centralized protection system or relay provides the protection of multiple power plant or a substation. A novel integrated protection scheme based on a combination of a number of protection techniques is described. In the proposed scheme, the specially designed protection relays are installed at each substation of a network and are responsible for the protection of every line sections connected to the substation busbar. The combined algorithms with multiple settings are implemented into the relay to cover all the protected line sections. The scheme is supported by advanced communication network and standard. (6 pages)