This paper presents a Least Absolute Value (LAV) state estimator for power system using a new method called Recursive Least Squares (RLS). Also, a suitable model is used for state estimation of power system that includes a Unified Power Flow Controller (UPFC). The IEEE 14-bus test system is used to show the validity of the proposed algorithm in estimation of power system states as well as the s...

This paper gives a brief review of fast and flexible control of power flow in transmission lines. Special emphasis is on SVC, TCSC and UPFC looking towards their benefits for improving the operation of an electrical power system. Performance comparison of these FACTS controllers has been discussed. In addition, some of the utility experience have been reviewed and summarized. Applications of FA...

In this paper, a dynamic model of Unified Power Flow Controller (UPFC) is developed to improve the power transfer capability (PTC) through the transmission line. Improvement of the bus voltages profiles along with the reduction of total power losses is also intended with UPFC’s presence. The UPFC shunt and series controllers are developed based on Fuzzy Logic (FL) which has been designed as a s...

In this paper, the optimal design of supplementary controller parameters of a unified power flow controller (UPFC) to damp low-frequency oscillations in a weakly connected system is investigated. The individual design of the UPFC controller, using the imperialist competitive algorithm (ICA) technique over a wide range of operating conditions, is discussed. The effectiveness and validity of the ...

This paper presents a congestion management methodology in deregulated power systems by optimal location and sizing of Unified Power Flow Controller (UPFC) in a transmission network. A multiobjective optimization problem has been developed by considering total congestion cost, power loss and system severity. A Fuzzy based approach has been proposed to identify the optimal location and sizing of...

In this paper the performance of Synchronous Generator which is act as a Dispersed Generator is examined in controlling the flow of power over the transmission line. This project presents real and reactive power flow control through a transmission line by placing Synchronous Generator at the load end along with UPFC at the midpoint of a power system. The real and reactive powers can be easily c...

This paper presents a systematic approach for designing Unified Power Flow Controller (UPFC) based supplementary damping controllers for damping low frequency oscillations in a single-machine infinite-bus power system. Detailed investigations have been carried out considering the four alternatives UPFC based damping controller namely modulating index of series inverter (mB), modulating index of...

This paper presents a particle swarm optimization (PSO)-based neuro-sliding mode controller for the transient stability enhancement of multimachine power systems with unified power flow controller (UPFC). The UPFC is modeled as controllable loads. These controllable parameters are obtained using the sliding mode control (SMC) strategy. A PSO-based single neuron controller is used to adapt the p...

This proposed work aims at forming a switching level modeling of Unified Power Flow Controller (UPFC) and analyzing its operation. The switching level modeling of UPFC is carried out using high power electronic devices such as IGBT based six pulse shunt and series converters. The operating performance of UPFC is demonstrated on Single Machine Infinite Bus (SMIB) system for different case studie...

On the basis of the linearized Phillips-Herffron model of a single-machine power system, a novel method for designing unified power flow controller (UPFC) based output feedback controller is presented. The design problem of output feedback controller for UPFC is formulated as an optimization problem according to with the time domain-based objective function which is solved by iteration particle...