Estimation of inertia constant of Iran power grid using the largest simulation model and PMU data

Inertia constant is an effective parameter for power system analysis such as the load frequency control, dynamic behavior study and it is necessary for system operators to do decision making during contingency conditions. This paper uses the largest simulation model of Iran power grid (containing integrated transmission and sub-transmission network model) and Phasor Measurement Unit (PMU) data to analysis the generator outage of Bushehr power plant as a very effective event to estimate the inertia constant of Iran power system. The approximate matching between simulation and measurement based calculation results supports the validity of resulted value.