Electric distribution networks have a simple protection system including fuses, re-closers, and overcurrent relays. One of the negative effects of DG installation in distribution network is miscoordination of protection devices and conflict between DG operation as islanding mode and protection purposes. This paper for overcoming to this difficulty proposes an efficient algorithm based on dividi...

Reliable electrical power supply is a prerequisite for the modernsociety, and if it fails, it can cause severe consequences in terms of economiclosses and even fatalities. It is thus important to analyse the vulnerabilityof the electric power system. Network analysis has previously been used toanalyse the vulnerability of electric transmission systems. Recent events inSweden...

Growing integration of distributed energy resources (DER) presents the electric power sector with the potential for significant changes to technical operations, business models, and industry structure. New physical components, control and information architecture, markets, and policies are required as the power system transitions from one of centralized generation and passive load to a network ...

Abstract:Today, one of the important issues of power quality (PQ) in power systems is the current harmonics. Increasing expansion of nonlinear loads at different parts of the electric network makes harmonic distortion flow through the network. This causes the network to have background voltage and current harmonic distortion and even affect on the PQ of linear load performance. Therefore, it is...