1. Synchronous generator and static compensator models for a generic transmission network model using Matlab/simulink- This is a part of industrial research work with Finnish National grid (Fingrid Oy). This reports on an investigation of the impact of static var compensators (SVC) and static compensators (STATCOM) on the voltage and frequency stability of practical transmission system. It also explores an application of a battery energy storage system (BESS) which serves the purpose of stabilizing an otherwise unstable power transmission network.