Fault-tolerance has been an essential architectural attribute for achieving high reliability in many critical applications of digital systems. Automatic fault and error handling mechanisms play a crucial role in implementing fault tolerance because an uncovered (undetected) fault may lead to a system or a subsystem failure even when adequate redundancy exists. Examples of this effect can be fou...

deregulation policy has caused some changes in the concepts of power systems reliability assessment and enhancement. in this paper, generation reliability is considered, and a method for its assessment using intelligent systems is proposed. also, because of power market and generators’ forced outages stochastic behavior, monte carlo simulation is used for reliability evaluation. generation reli...

In substation automation system, the appropriate operation of protection, control and monitoring systems depends on connection network accuracy. One of the important topics in modern automation system is connection of primary equipment to automation system by serial network; this connection is named ‘process bus’. Generally the configuration of communication network is based on the required dat...

The modern society has come to expect the electrical energy on demand, while many of the facilities in power systems are aging beyond repair and maintenance. The risk of failure is increasing with the aging equipments and can pose serious consequences for continuity of electricity supply. As the equipments used in high voltage power networks are very expensive, economically it may not be feasib...

The current human reliability analysis method of analyzing system operator’s reliability, carried out from the perspective of operators themselves, is relatively static, for it hasn’t taken the effect of system evolution on the operators’ performance into consideration. In view of operator reliability in digital control system in nuclear power plant, this paper, based on boolean network theory,...

Using IEC 61850 standard would increase the reliability and availability of electricity network and put a huge impact on network automation. Even though much research works has been done in substation system reliability, there is a few works in automated substation control system reliability. This paper evaluates the reliability of substation automation system based IEC 61850 comparatively cons...

The purpose of this paper is to describe an efficient Boolean algebraic algorithm to compute the probability of a union of non-disjoint sets as applied to symbolic reliability analysis. Coherent networks and fault-trees with statisticallyindependent components characterized by their minimal pathsets or cutsets are used as examples for generating the non-disjoint sets. The algorithm uses the con...

in this paper, reconfiguration problem of distribution network has been investigated toimprove reliability and reduce power loss by placement of renewable energy sources; i.e. solarcell and wind turbine. for this, four reliability indices are considered in objective function;which are as follows: system average interruption frequency index (saifi), system averageinterruption duration index (sai...