Current limiting reactor allocation in distribution networks in presence of distributed generation

Connection of distributed generators to the distribution network increases the fault current level. Increase in fault current disturbs the operation of existing protection system and circuit breakers. As a result, it is important to reduce the short circuit current. Practically, the fault current reduction techniques are performed by using current limiting reactor (CLR) and fault current limiter (FCL). CLR is cheaper and easier to install in the distribution network. In this paper impact of CLR on reduction of fault current and its optimum location is investigated. The results show the effectiveness of CLR in reduction of fault current.