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Power Flow Control and Voltage Profile Improvement Using Unified Power Flow Controller (UPFC) in a Grid Network

Takkolu Kalyani 1, T. Ramesh Kumar 1, and G. Siva Prasad 2
1. Department of Electrical Engineering, Bapatla Engineering College, Bapatla, India
2. Department of Electrical Engineering, KORM College of Engineering, Kadapa, India
Abstract—Power flow control is the critical factor affecting power transmission system. Unified Power Flow Controller (UPFC) is used to regulate the power flow control in power transmission line. The UPFC is represented with two voltage sources named Voltage Source Model (VSM), which is used to study the behaviour of the UPFC in regulating the active, reactive power and voltage profile in the system. These VSM is incorporated in Newton Raphson (N-R) algorithm. The equations of UPFC and the power balance equations of network are combined in to one set of non-linear algebraic equations by employing Simultaneous method and is calculated according to the Newton raphson algorithm and Performed on the IEEE 30-bus system. Simulation is done in Matlab. The results are compared with and without UPFC in terms of active and reactive power flows in the line and check bus voltages to analyze the performance of UPFC.
 
Index Terms—Newton-Raphson algorithm, load flow, unified power flow controller, voltage source model

Cite: Takkolu Kalyani, T. Ramesh Kumar, and G. Siva Prasad, "Power Flow Control and Voltage Profile Improvement Using Unified Power Flow Controller (UPFC) in a Grid Network," International Journal of Electronics and Electrical Engineering, Vol. 4, No. 6, pp. 482-487, December 2016. doi: 10.18178/ijeee.4.6.482-487
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