This paper presents a numerical study of the system unbalance and the fault impedance effect on faulted power system analysis. Two short circuit techniques, the symmetrical components and phase components algorithms are implemented and analyzed based on numerical simulations of the IEEE 13 bus test feeder. Test cases include voltage unbalance effect and fault impedance effect on during-fault vo...

Introduction. Distributed generation has played an important role in many aspects of sustainability, such as improving voltage profiles and reducing power losses, the distribution network. Problem. Frequent variation loads causes complications while placing sizing distributed radial network, via quality supply, stability system. Goal paper is to investigate mitigate issues towards stabilizing s...

The paper presents accurate and simple dynamic model of a supercapacitor bank system for power dynamics studies. proposed is derived from detailed RC circuit representation. Furthermore, complete control the also presented. easy to integrate in any simulation software consists only up four standard datasheet parameters. performance grid frequency low-voltage ride through illustrated on IEEE 14-...

in this paper, a combinational optimization algorithm is introduced to obtain the best size and location of static compensator (statcom) in power systems. its main contribution is considering contingency analysis where lines outages may lead to infeasible solutions especially at peak loads and it commonly can be vanished by load-shedding. the objective of the proposed algorithm is firstly to pr...

this paper investigates the islands formation in initial stages of restoration process in blackout condition and studies the impacts of islands number variation on the process execution. in addition, a method is proposed to determining each island optimal boundaries. then the effects of transmission lines thyistor controlled series compensators (tcsc) to facilitate restoration process and impro...

The phasor measurement unit (PMU) is considered to be one of the most important measuring devices in the future of power systems. The distinction comes from its unique ability to provide synchronized phasor measurements of voltages and currents from widely dispersed locations in an electric power grid. This paper proposes an algorithm based on the clustering techniques for solving the optimal P...

This paper looks at the problem of placing Static Var Compensators to provide maximum transfer capability for all possible generation mixes. The margin to low voltage limit is one of the quantities used to determine power system transfer capability. A fast method for finding the location of SVC systems that will have the greatest impact on the low voltage margin will be shown. The IEEE 24 bus s...

The international SCI standard IEEE/ANSI 1596a [Ref. 1.] is on its way to become the computer interconnect of the year 2000 since for a first time, low latency desktop multiprocessing and cluster computing can be implemented at low cost. The PCI bus is todays’s dominating local bus extension for all major computer platforms as well as for buses like VMEbus. PCI is a self configuring memory and ...

The necessity of Distributed Generation (DG) in the modern power system has increased greatly. Optimal placement and sizing DGs have a significant impact on objectives voltage stability enhancement, real reactive loss minimization security reliability. Different types such as Type I, II, III IVare placed. optimal these is found using Voltage Stability Index (VSI). done Differential Evolution (D...