Associate Professor, Department of Electrical Engineering, B.N. College of Engineering & Technology, Lucknow, Uttar Pradesh, India --------------------------------------------------------------------***--------------------------------------------------------------------Abstract This paper presents design and analysis of UPFC based power oscillation damping controller. The PhillipsHeffron model ...

Low Frequency Oscillations (LFO) occur in power systems because of lack of the damping torque in order to dominance to power system disturbances as change in mechanical input power. In the recent past Power System Stabilizer (PSS) was used to damp LFO. FACTs devices, such as Unified Power Flow Controller (UPFC), can control power flow and increase transient stability. So UPFC may be used to dam...

High-voltage and power capability of multilevel converters better used for unified power-flow controller (UPFC application). The three-level neutral-point-clamped (NPC) converter allows back-to-back connection as the UPFC shunt and series converters than other multilevel topologies. In place of the pulse width-modulated (PWM) multilevel control schemes, constant dc-link voltage and balanced vol...

A comprehensive approach to the design of UPFC controllers (power-flow controller, DC-voltage regulator and damping controller) is presented. Studies reveal that damping is adversely affected by the incorporation of a DC-voltage regulator. Investigations were carried out to understand the relative effectiveness of modulation of thc UPFC control signals inR, SB, niE and <5£ on damping of the sys...

FACTS devices can help the damping of power system oscillations. The objective of this paper is to design and propose a systematic approach for damping controller to validate results by comparing with lab prototype. This paper presents a control scheme, comprehensive analysis and result obtained for the dynamic control of power transmission, damping of oscillations with Unified Power Flow Contr...

this paper presents a new component within the flexible ac-transmission system (FACTS) family, called distributed power-flow controller (DPFC). The DPFC is derived from the uni-fied power-flow controller (UPFC). The DPFC can be considered as a UPFC with an eliminated common dc link. The active power ex-change between the shunt and series converters, which is through the common dc link in the UP...

This study presents a finding an optimal location and best parameter setting of Unified Power Flow Controller (UPFC) by Bacterial Foraging Optimization Algorithm (BFOA) for minimizing the active and reactive power loss in power system. The UPFC is one of the important Flexible Alternating Current Transmission System (FACTS) device that control simultaneously voltage magnitude at the sending end...

Transmission pricing is an important issue in view of increased deregulation. Purpose of pricing is to recover cost of transmission encourage efficient use and investment. Wheeling charges for power transmission can be reduced by FACTS devices as they are effective means of controlling the power flow in the network. The unified power flow controller (UPFC) integrates properties of both shunt an...