Power Flow Analysis of Longitudinal Electrical Power System Incorporating Generalized Unified Power Flow Controller (GUPFC)

摘要

Generalized Unified Power Flow Controller (GUPFC) is a voltage source converter (VSC) based Flexible AC Transmission System (FACTS) controller for shunt and series compensation among the multiline transmission systems of a substation. This research presents the result of the power flow analysis of Nigerian power system incorporating GUPFC modeled in rectangular form to control active and reactive power in transmission lines and reduce the system active power loss without violation of the bus voltage profile. The steady state modeling of GUPFC combined with power system network equations were solved using Newton-Raphson solution method. A MATLAB based program for steady state power flow analysis was developed to solve the resulting equation using Newton-Raphson method. The result of the power flow analysis of Nigerian transmission system indicates disproportionate power flow and high power losses. Application of GUPFC resulted in enhancing active power flow control, reduced system losses and improvement of the system voltage profile.