Electrical grid reliability assessment by fault tree analysis

Abstract

<p>The main rule of an electrical grid is to supply electrical energy to consumers as economically as possible, and with an adequate degree of reliability. Reliability is an essential measure and important component of all power system planning and operation procedures. In this paper, the electrical grid reliability is evaluated by Fault Tree (FT) analysis. In this method Alternating Current (AC) load flow analysis is combined with the FT technique. The electrical grid reliability is calculated based on the unreliability of the power supplied to the loads. The verification of the method is performed on a part of the Egyptian electrical grid (Alexandria zone 17-bus). The electrical grid components are sorted according to their influence on the electrical grid reliability.</p>

Hybrid algorithm for two-terminal reliability evaluation in communication networks

“…This decrease will have a direct impact on decreasing the computing time required for reliability evaluation. For example, for the commodity (S= ; D = ), the number of tie-set has decreased from (30) to (8) as shown in the first row of Table 1. This decrease is positively reflected in the computing time required for reliability evaluation.…”

“…Thus, high reliability has become an inevitable consequence for various controlled applications such as military, aircraft systems, and banking systems, where faults may cause financial and human life damages [3]. The network reliability requirement depends on the application and type of network such as wired network [4], wireless sensor network [5], mobile system [6], electrical distribution networks [7], and the electrical grid reliability assessment [8,9]. The network reliability is classified into three types according to the number of involved source-destination nodes.…”

Wireless electric energy transmission system and its recording system using PZEM004T and NRF24L01 module

“…other. Besides, the heat that arises in the conductor as a result of the existence of internal resistance to the conductor can reduce the efficiency of energy transmission due to wasted energy [12,13].…”