Simulation and state estimation of power system with Interline Power flow Controller

With the flexible AC transmission systems (FACTS) technique, the power flow in the interconnected power systems can be controlled flexibly. This paper is concerned about the state estimation of system, which contain Flexible AC Transmission System (FACTS) device. Interline power flow controller (IPFC) is one of the versatile FACTS device which is considered for estimating the state of the system. Based on the conventional power system state estimation model, a kind of model for state estimation with IPFC is introduced in this paper, in which power injection model is used and the effect of IPFC on the power flow is transferred to the lines which are connected to it. This method is integrated to the conventional state estimation program with the consideration of IPFC. The results demonstrate that the model is effective for practical use. The operation and working of Interline Power flow Controller was analysed and simulated results using Matlab-Simulink is presented.