Distributed generation (DG) has been widely used in distribution network to reduce the energy losses, improve voltage profile and system reliability, etc.  The location and capacity of DG units can influence on probability of protection mal-operation in distribution networks. In this paper, a novel model for DG planning is proposed to find the optimum DG location and sizing in radial distr...

Cascaded tripping of power lines due to mal-operation of zone 3 distance relays was one of the main causes of many previous blackouts worldwide. Encroachment of load into the zone 3 characteristics is one of the main cause for the maloperation of the relays. By improving the operation of zone 3 of distance relays it is possible to prevent such mal-operations so that cascaded line tripping can b...

 Background: Mal:::union::: is the most common complication following distal radius fractures. Aim of this study was to evaluate the results of distal radius corrective osteotomy and plate fixation by dorsal approach in the mal:::union:::. Methods: In this retrospective study, 14 patients with neglected distal radius mal:::union::: from 2005 to 2011 were studied. All patients were treated ...

One of transient phenomenon that causes the mal-operation of the power transformer differential protection during the energization of a loaded power transformer is the ultra-saturation phenomenon. In this paper, a new model for investigating the ultra-saturation phenomenon during the energization of a loaded power transformer is presented and its effect on the differential protection of the pow...

One of transient phenomenon that causes the mal-operation of the power transformer differential protection during the energization of a loaded power transformer is the ultra-saturation phenomenon. In this paper, a new model for investigating the ultra-saturation phenomenon during the energization of a loaded power transformer is presented and its effect on the differential protection of the pow...

background: mal::::union:::: is the most common complication following distal radius fractures. aim of this study was to evaluate the results of distal radius corrective osteotomy and plate fixation by dorsal approach in the mal::::union::::. methods: in this retrospective study, 14 patients with neglected distal radius mal::::union:::: from 2005 to 2011 were studied. all patients were treated ...

background: mal:::::union::::: is the most common complication following distal radius fractures. aim of this study was to evaluate the results of distal radius corrective osteotomy and plate fixation by dorsal approach in the mal:::::union:::::. methods: in this retrospective study, 14 patients with neglected distal radius mal:::::union::::: from 2005 to 2011 were studied. all patients were tr...

PURPOSE To describe the anesthetic management of a patient with Jansky-Bielschowsky disease (JBD), the late infantile form of neuronal ceroid lipofuscinosis, characterized by dementia, severe and drug resistant grand mal, myoclonic seizures, and blindness. CLINICAL FEATURES A 14-yr-old girl with JBD was scheduled for resection of a gingival tumour and an infected sinus in the sacral area. Her...

Catastrophic failures in power grid due to maloperation of traditional backup protection system (e.g. third zone of distance relays) was one of the main causes of many cascade trips. This paper assess a new wide-area backup protection system (WABPS) based on phasor measurement units (PMU), to improve third zone of distance relays to avoid its mal-operation. Based on this assessment, phasor meas...