Load modeling interaction on hybrid power system using STATCOM

Abstract

This paper considers the importance of the load voltage dynamics in autonomous hybrid power system. In steady state the reactive powers of the system components are balanced but small perturbations at supply or load end change the dynamics of the system. The system attains its steady state in some time with the flow of additional reactive power in the system through either synchronous generator or induction generator or FACTS controller STATCOM. In this paper, the interaction between the load and the power system is explored in terms of load and system transfer function. A comparison is given with and without the interaction of load with system. It is found that the system reactive power demand by the STATCOM and voltage variation will be reduced if the load interaction with system is also considered.