A novel power injection model with multi-control functions of the static synchronous series compensator (SSSC) is presented. In this model, no simplification performed and complex impedance coupling transformer charging susceptance as well line are all taken into consideration. The proposed developed while original admittance Jacobian matrix kept unchanged. new corresponding to SSSC device integrated Jacobian. Furthermore, general since it takes account any possible bus type at end where...

This paper considers the impact of Inductive Fault Current Limiter (IFCL) on d irect ional overcurrent relays coordination.The coordination problem is formulated as a non-linear constrained mono-objective optimization problem.The objective function this optimizat ion minimizat operation time associated in systems, and decision variab les are: dial setting (TDS) pickup current (I P ) each relay.To solve co mplex non linear problem, variant algorith ms named Firefly A lgorith m (FA) used.The...

In this paper, a new method for optimal locating multi-type FACTS devices in order to optimize multi-objective voltage stability problem is presented. The proposed methodology based on variant of Particle Swarm Optimization (PSO) specialized optimization known as Non-dominated Sorting (NSPSO). crowding distance technique used maintain the Pareto front size at chosen limit, without destroying its characteristics. To aid decision maker choosing best compromise solution from front, fuzzy-based...

A potential solution for stand-alone power generation is to use a hybrid energy system in parallel with some hydrogen storage. Renewable sources (solar, wind, etc) are attracting more attention as alternative conventional fossil fuel sources. This being used widely substitution of oil-produced and will help minimize atmospheric degradation. One third the world population does not have access clean water most these people connected electrical grid at same time. In this paper, Photovoltaic...

This paper deals with the reliability assessment of electrical power supply systems under redundancy. For doing so, three probabilistic safety analysis (PSA) methods are proposed and developed namely fault tree (FTA), block diagram (RBD), Monte Carlo Simulation (MC) method. The FTA method is performed using RiskSpectrumPSA® software RBD MC coded Matlab software. system analyzed enhanced considering various cases based on qualitative quantitative assessment. calculates failure probability top...

This research paper presents an optimal coordination of direction overcurrent relays (DOCR) in power systems. The new idea this is to consider the impact line series compensation on DOCR setting and coordination. problem formulated as a nonlinear constrained mono-objective optimization problem. objective function minimization operation time associated systems, decision variables are: dial (TDS) pickup current (IP) each relay. To solve complex non linear problem, variant evolutionary...

The Hierarchical Voltage Regulation (HVR) is an efficient alternative to the traditional solutions used in power system voltage control. It consists of three levels: primary, secondary and tertiary, among which Secondary (SVR) level core HVR ensuring coordination a network area reactive resources by controlling pilot bus, most representative bus. Moreover, recent years, shunt FACTS devices, especially Static var Compensators (SVC), have shown very good performances local control at...

Optimal coordination of Inverse Definite Minimum Time (IDMT) direction overcurrent relays in the power systems presence multiple Thyristor Controller Series Capacitor (TCSC) on inductive and capacitive operation mode meshed system is studied this paper.The problem formulated as a non-linear constrained mono-objective optimization problem.The objective function minimization time (T) associated systems, decision variables are: dial setting (TDS) pickup current (IP) each relay.To solve complex...

This paper presents an optimal coordination of inverse definite minimum time (IDMT) direction overcurrent relays (DOCR) in electrical networks considering the impact line series compensation (SC). The problem is formulated as a non-linear constrained mono-objective optimization problem. objective function this minimization total operation associated power system, and decision variables are: dial setting (TDS) pickup current (Ip) each relay. To solve complex non linear problem, Particle Swarm...

This paper presents the impact of GTO Controlled Series Capacitor (GCSC) parameters on Inverse Definite Minimum Time (IDMT) Directional Overcurrent Relay (DOCR) based International Electrotechnical Commission (IEC) standards. The DOCR is used to protect a single 400 kV transmission line Algerian network which belongs Company Electrical and Gas (Group Sonelgaz). effects GCSC protected as well fault current operation time in presence phase earth with resistance are investigated considering...

This paper presents an optimal coordination of inverse definite minimum time (IDMT) directional overcurrent relays (DOCR) in the presence Wind Energy Farms (WEF). Firstly, impact WEF on is focused, after that we search for new setting to ensure relays. The problem formulated as a constrained nonlinear mono-objective optimization problem. objective function this minimization operation associated In terms decision variables; two types optimizations are considered paper, namely: real parameter...

For safety purpose, the electrical power supply system of a Nuclear Power Plants NPP must be reliable in all operation modes. The 1E class NPP's load can supplied from various independent sources namely: main (electrical grid), generator (house operation), auxiliary and emergency (e.g. Diesel generator). In this paper, quantitative qualitative reliability assessment model an are performed using fault tree analysis (FTA) method importance factors. is based on calculation failure probability...

This paper presents a new formulation of the overcurrent relays setting and coordination problem using combinatory constrained multi-objective optimization. Two objective functions are selected to be minimized simultaneously namely: minimization primary operation time as well backup time. Both real integer decision variables considered; where dial (TDS), pickup current (Ip), relay characteristics. To solve this non linear problem, original algorithm Strength Pareto Evolutionary Algorithm 2...

This paper deals with reliability modeling and evaluation of reparable electrical power supply systems. The proposed methods are Reliability Block Diagram (RBD), Minimal Cut Sets (MCS) Importance factors. These ensure quantitative qualitative analysis reliability. MCS deduced using minimal paths method. Furthermore, various importance factors namely: Birnbaum Importance, Inspection Fussell-Vesely applied to identify the most important electric components in system. programmed Matlab software...