Cover Story

Improving the Protection of Distribution Systems with DERs

The continuously increasing number of small wind farms and individual wind turbines connected to the electric distribution systems makes it necessary for all installed and operational wind generation to remain in operation during short circuit faults at the distribution substations or feeders. The traditional distribution system protection is not designed to operate with DERs connected to distribution feeders and also may operate in several seconds under specific fault conditions. This requires changes and improvements in the protection methods and solutions, some of which are discussed in this article. More

Relion advanced protection & control.
BeijingSifang June 2016