Analysis of Short Circuit on Four Types Wind Power Plants as Distributed Generation

Abstract

The contribution of this paper to analyze the effect of wind power plants’ existence as distributed generation (DG) to short circuit currents in electrical power systems. Testing of short circuit simulation has performed on the IEEE 69 bus standard. In short circuit simulation used four different types of wind power plants. The first type of wind power plant is Fixed-speed conventional induction generators (FSCIG), the second type is Variable slip induction generators (VSIG), the third type is Variable speed doubly-fed induction generators with rotor-side converters (DFIG), and the fourth type is Variable speed with full converter interface induction generators (FCIIG). For comparison, 7 scenarios have made for each type of wind power plant. The first scenario has simulation without wind power plants or distributed generation. The second scenario has a wind power plant (DG) placed on the upstream side of the electrical power system near the grid. In the third scenario, DG has placed in the middle of the electric power system to supply a large amount of load. In the fourth scenario, DG has placed on the downstream side of the electric power system to supply small loads. Whereas in 5th, 6th, and 7thscenarios have combinations of 4 types of wind power plants have placed on the upstream side, middle, and downstream side of the electrical power system. The results of all these simulations have compared, starting from the smallest to the largest short circuit fault current.