UNIFIED POWER FLOW CONTROLLER AND ITS ROLE IN POWER TRANSMISSION NETWORK

The performance of unified power flow controller (UPFC) is analyzed in
controlling the flow of power over the transmission line. The application of UPFC
in steady-state analysis is to demonstrate the capabilities of UPFC in controlling
the real and reactive power flow within any electrical network. Voltage sources
model will be utilized to study the behavior of the UPFC in regulating the active,
reactive power flow as well as the voltage. This model is using the Newton
Raphson algorithm for power flow studies. Simultaneous method are need to be
done in which equations of UPFC and the power balance equations of network are
combined into one set of non-linear algebraic equations [1,2]. Then it is solved
according to the Newton Raphson method. In this project, the PSCAD EMTDC
software is used for the simulation. The result of network with and without using
the UPFC are compared in terms of active and reactive power flows in the line
and bus powers to analyze the performance of UPFC.