The annual increasing of load demand in electrical distribution networks leads to line congestion, decreasing the bus voltages below the acceptable limits and increasing the active and reactive power losses. However, renewable distributed generation (DG) has received increasing attention due to that growing in load demand. This paper presents a hybrid method based on moth-flame optimization (MFO) algorithm with loss ... Read more

In this paper, a new bio inspired optimization technique called Moth Swarm Algorithm (MSA) is developed to find the optimal solution for Combined Economic and Environmental dispatch (CEED) problems. Its aim to minimize both the operating fuel cost and emission levels simultaneously while satisfying load demand and operational constraints. The CEED problem is formulated as multi-objective function by considering the ... Read more

The static synchronous series compensator (SSSC) is an important component of flexible AC transmission systems (FACTS) devices. SSSC can be used to control the active and reactive power flow in transmission lines. This paper presents a simplified model for SSSC in Newton–Raphson (NR) load flow algorithm. It also presents strategies for handling the operating constraints of SSSC including the series‐injected ... Read more

In recent years, the Flexible AC Transmission System (FACTS) controllers have been widely used to enhance the controllability, security and flexibility in power transmission networks. Interline power flow controller (IPFC) is a versatile member of FACTS devices that can be used to control the power flow in multiple lines in network. Modeling of IPFC with handling its operating constraints is ... Read more

This paper proposes a simplified modeling for HVDC in Newton Raphson (NR) load flow algorithm based on power injection approach. In this modeling, the HVDC is represented as injected loads at their end terminals. This injected loads are updated during the iterative process as a function of the desired power flow through the HVDC connected transmission line. The main advantages ... Read more

Static Synchronous Series Compensator (SSSC) is an efficient member of Flexible AC Transmission Systems (FACTS) devices. SSSC is connected in series with transmission lines to control the active and reactive power flow in these lines. In this paper, Grey Wolf Optimization (GWO) algorithm is developed for solving the optimal reactive power dispatch (ORPD) problem. The ORPD problem is solved with ... Read more

Due to the high penetration level of wind farms in the electrical grids, many grid connectivity issues interested and must be highlighted such as the improvement of Fault-ride through (FRT) capability of grid integrated doubly fed induction generators (DFIGs) based wind-turbine. In this paper the resistive superconducting fault current limiter (RSFCL) is proposed to minimize the fault current, enhance the ... Read more

This study proposes the generalised unified power flow controller (GUPFC) model in the hybrid current power mismatch Newton–Raphson formulation (HPCIM). In this model, active power, real and imaginary current components are injected at the terminals of series impedances of GUPFC. These injected values are calculated during the iterative process based on the desired controlled values and buses voltage at the ... Read more

This paper presents a developed optimization technique based on moth-flame algorithm to determine the optimal placement and parameter setting of Static Synchronous Series Compensator (SSSC) for enhancing power system security under single line contingencies. A contingency analysis is performed on power system to determine the most severe line outage contingencies using performance index which based on the number of thermal ... Read more

Static Shunt Compensator (STATCOM) is a powerful member of the Flexible AC transmission system (FACTS) based on voltage source converter. STATCOM is connected in shunt with the system to provide a voltage control of a certain bus by injecting or absorbing reactive power. This paper presents an efficient optimization technique called Moth-Flame Optimization (MFO) algorithm for determining the optimal location ... Read more