Interconnection System Simulation Analysis of Transient Micro-grid Stability in Indonesia

Global economic development causes higher energy demand. The superiority of technology in distributed power generation from renewable energy sources is a solution to these problems. The writers designed a system modeling in ETAP software to design a micro-grid interconnection system that utilized the potential sources of solar and wind energy in Indonesia. This design is combined with models in the ETAP software such as wind turbine, photovoltaic, inverter, energy storage, generator, user-side loads, industrial system loads, transmission-distribution, transformers, and conventional power grid. The simulation of the micro-grid interconnection system is designed in operating conditions in order to analyze the load flow and transient stability analysis when a three-phase fault occurs on the main bus. This system is modeled in graphical form to determine the effect of errors on stress recovery to return to normal operating conditions. The use of wind turbine in a micro-grid system causes the transient stability conditions in the main bus voltage to fluctuate. To maintain calm on the main bus, a variable picth control setting is required on the wind turbine generator. The effect of energy storage on the micro-grid interconnection system in the event of an error can reduce the voltage drop on the main bus.