Transmission network congestion is an important issue in deregulated power systems, whenever the physical or operational constraints in a transmission network become active, the system is said to be in a state of congestion. Congestion management (CM) is a mechanism to prioritize the transactions and commit to such a schedule that will not overload the network. This paper presents relieving tra...

The symbiotic organisms search (SOS), which has been recently introduced, is a robust powerful metaheuristic global optimizer. This nature-inspired algorithm imitates the symbiotic interaction strategies in an ecosystem exercised by organisms involved in interrelationships to survive and reproduce. One of the main beneficial features of the SOS in contrast to many other competent metaheuristic ...

This paper proposes an approach for the protection of transmission lines with FACTS based on Artificial Neural Networks (ANN) using Wavelet Transform (WT). The required features for the proposed algorithm are extracted from the measured transient current and voltage waveforms using discrete wavelet transform (DWT). Those features are employed for fault detection and faulted phase selection usin...

This paper presents a comprehensive survey of incorporation of FACTS controller such as SVC, TCSC, SSSC, STATCOM, UPFC, and IPFC devices in NewtonRaphson load flow (NRFL) for power flow control. The purpose of this paper is to present a comprehensive survey of various FACTS controllers are incorporated in load flow analysis for different point of view such as optimal power flow control, plannin...

This paper proposes a hybrid controller scheme for enhancement of steady state stability in the presence of uncertainties in power systems. The procedure employs a robust TCSC assisted by a Fuzzy PSS designed with the uncertain model of power system. The resulting controller provides excellent damping of oscillations at low frequencies for a SMIB system. The Simulation results show the great en...

The detection of potential voltage collapse in power systems is essential to maintain the stability heavy load demand. This paper proposes a method detect weak buses using two indices: margin factor (dS/dY) and prediction index (VCPI). Hence, aims improve Iraqi transmission grid by allocating FACTS devices optimal locations sizes. Two types are used this which Thyristor controlled series compen...

In this paper, the optimal location and tuning parameters of Static Var Compensator (SVC), Proportional-Integral-Derivative (PID) stabilizer with low pass filter and Thyristor Controlled Series Compensator (TCSC) controllers using multi objective Honey Bee Mating Optimization (HBMO) to damp small signal oscillations in a multi machine power system has been implemented. Whereas, the performance ...

This paper concerns the optimal location of Flexible AC Transmission Systems (FACTS) in multimachine power system using Genetic Algorithm. The objective is to obtain the bus voltages of the system within healthy limits. TCSC is the FACT device chosen for the proposed algorithm. The location of FACT devices and their rated values are optimized simultaneously. Simulations are done on a power syst...

A method for the design of supplementary damping control system for TCSC in a power system is presented in this paper. The problem is formulated as an optimization problem with an eigenvalue based multi-objective function. Various optimization techniques have been used in the past but here, a novel random walk optimization technique is used to find optimal set of controller parameters by minimi...

Recent investigations have focused on the use of active phase imbalance schemes using series connected FACTS devices for subsynchronous resonance (SSR) and power swing damping. This paper compares the effectiveness of TCSC and SSSC based single phase compensation schemes with the corresponding three phase schemes. Controllability of swing modes as well as torsional modes is compared by using a ...