Effect of distributed generations based on renewable energy on the transient fault - Ride through

Many power systems are facing power quality problems and transmission equipment are stressed with heavy power flows over long distances. Distributed generation (DG) units can minimize the burden on transmission networks by supplying local loads and providing ancillary services. However, increased penetration of DG units in the distribution networks require new operating conditions to ensure safe and secure system operation. This concern appears during the operation of small to medium-scale low and medium voltage micro/smart grids. This paper investigates the fault - ride through capability (FRT) of the DGs with and without storage. It also discusses the difference between the base case without DGs and after adding DG units to the system when the system experiences a transient fault. The fault - ride through capability is studied on a generic model of IEEE distributed generation system with 13 buses. To assess the fault - ride through capability, the test network is simulated by using the commercial DIgSILENT Power Factory, and results obtained are discussed.