Analysis of System Impact of the Distributed Generation Using EMTP With Particular Reference to Voltage Sag

Abstract With the advent of distributed generation, the overall power system are impacted on stability and power quality. The distributed generation has a positive impact on system restoration following a fault, higher reliability, and mitigation of effect due to voltage sag. However, the distributed generation also has a negative impact on decrease ofreliability such as changes of protective device setting and mal-operation. Because bulk power systems consist of various sources and loads, it is complicated to analyze power system with distributed generation. The types of distributed generation usually are classified both rotating machinery and inverter-based system. In this paper, the distributed generation is designed by rotating machinery, and the distributed system with model ofthe distributed generation is simulated using EMTP . In addition, this paper shows the simulation results according to the types of distributedgeneration.