Surge arresters are equipment of vital importance in the protection electrical power systems, with role protecting transmission, distribution lines and face atmospheric discharges, as well maneuver surges eventual maintenance, also reducing maintenance accidents. Thus, it is important to investigate operating conditions these under different scenarios, whether normal or polluted conditions. The...

This paper describes a methodology that aims to detect and diagnosis faults in lightning arresters, using the thermovision technique. Thermovision is a non-destructive technique used in diverse services of maintenance, having the advantage not to demand the disconnection of the equipment under inspection. It uses a set of neuro-fuzzy networks to achieve the lightning arresters fault classificat...

Recently the hybrid multi-port DC circuit breaker (MP-DCCB) is becoming popular in protecting HVDC grids, thanks to their reduction of power electronics devices. In this paper, an enhanced current-limiting DCCB (MP-CLCB) for multiple line protection proposed. The integrated fault current limiter (FCL) inside MP-CLCB can clear faster with slightly increased costs. To reduce energy dissipation re...

Partial discharge of an insulator or surge arrester is a symptom of an insulation breakdown or insulation failure. It is very important to know the position of discharge source as soon as possible in order to remove this cause. In order to achieve remote monitoring of the faults due to an insulator and surge arrester on the distribution systems, the most important things need to do is to determ...

Retractable type fall arresters are part of the equipment used for protecting people against falls from a height. They are an intermediate part between full body harness worn by a man and the structural anchor at the worksite. The most important task of retractable type fall arresters is to arrest people's falls and to reduce their harmful consequences. Information received from users as well a...