Impact due to the application Location of a Dispersed generation on the distribution system Protection with SFCL Application Using PSCAD

In this paper a study on Impact due to the Location of a Dispersed generation on the distribution system protection with SFCL is proposed. An experimental circuit that simulates a DG and the protective devices is designed and realized by using the power electronic switches. A distribution system protection is designed with two feeders, the protective devices and the SFCL in PSCAD 4.2.1 software. The assembled distribution system protection is to be analyzed by carrying out short circuit tests. The short circuit tests are to be carried out with the DG connected in three different locations of the system namely I).DG at the source bus II).DG at the middle point of the fault feeder and, III).DG at the middle point of the healthy feeder. It is observed from the test results that, there is a decrease in the fault current when the DG was located at the middle point of fault feeder. This is result in lower resistance generation of SFCL and hence improves the performance of the recloser circuit breaker whose lock out operation delay time is little advanced as compared to other DG locations.