Power stability is an important issue that is becoming increasingly important to an power systems at all levels. We are unable to achieve the stability of the system due to some factors. Low frequency oscillation’s is one of the major factors that affect the transmission line capacity. Traditionally power system stabilizers(PSS) are being used to damp these inevitable oscillations. In advanced ...

A fuzzy logic- (FL-) based control technique for unified power flow controller (UPFC) to resolve the quality issues in transmission network is presented this paper. MATLAB/Simulink used design FL-based controllers shunt and series converters of UPFC, which validated on 4-bus system. In addition, performance suggested UPFC compared with PI (proportional integral), HC (hysteresis controller), MPC...

! Abstract—The present paper describes the modeling of Unified Power Flow Controllers (UPFC) for studying the steady-state and transient behavior of electrical networks equipped with FACTS devices. Detailed time-domain simulations are carried out on four model power systems (single-machine system and multi-machine systems including the IEEE-14 bus test system), to illustrate the control feature...

UPFC is a versatile FACTS controller that can regulate the Power Flow through the Line by controlling its Series and shunt parameters. In shunt it is having STATCOM and in series SSSC are employed can independently control the Line Power Flow. Two Converters improves the flexibility and provide additional degree of freedom in Power System. With the application of UPFC, Transient stability of th...

This paper presents a mathematical deterministic adaptive distance protection formulation for UPFC compensated transmission lines. The proposed formulation is developed using a phase component approach and considers and compensates for various UPFC operation conditions and non-zero fault resistances. The proposed methodology is completely adaptive and independent of system characteristics (such...

This paper presents a novel method of identifying the suitable location for Installation of Unified Power Flow Controller (UPFC), with static point of view, for reducing the severity of a load bus. Bus ranking Index which incorporates the combined effect of line outage contingency and bus load reaching to its voltage stability margin (VSM) is used for deriving the sensitivity factors. These sen...