The spacial characteristics of an underground common duct often lead to disasters resulting in great damage life and property. In the case a cable fire, additional damages such as failure power fire prevention equipment occur. Accordingly, derive risk factors cone calorimeter test was performed this study. simulation factor obtained by measuring temperature changes with time, while heat release...

a large number of authors have studied to find out how to control scouring around a pier along direct stream. the objective of this research is then to study a scour pattern around such piers on curves rivers due to the fact that there may be a difference between a flow pattern on a direct line and the meander. thus, this study tries to check whether the use of cable and collar alone and in a c...

In Nordic countries, electricity distribution networks are consisted of underground cables or overhead insulated conductors or mix of both. However, each alternative has its own pros and cons. This chapter concentrates on determining the wave propagation characteristics of single-phase medium voltage (MV) cross-linked polyethylene (XLPE) cable and covered-conductor (CC) overhead electricity dis...

The surrounding (backfill) materials around the underground power cable systems are essential for dissipating heat away from it, during exertion phases. dissipation restrains thermal instability and risk of progressive drying backfill materials, thus reducing stress on cable. Thermal indicates reduction in properties (conductivity or diffusivity) due to migration moisture because accumulation. ...

Increases in renewable and distributed generation will change the operational characteristics of our ageing power networks. To cope with these changes improved monitoring of the performance of network infrastructure is needed. Defects developing in electrical plant give rise to partial discharge (PD) activity. This paper describes an on-line PD monitoring system based on electro-optic modulator...

This paper presents the stability-improvement results of a synchronous generator (SG)-based one-machine infinite-bus (OMIB) system with a hybrid doubly-fed induction generator (DFIG)-based and permanent-magnet synchronous generator (PMSG)-based offshore wind farm (OWF) using a static synchronous compensator (STATCOM). The operating performance of the studied PMSG-based OWF is simulated by an eq...

in this paper, a new approach to modify cable tension measuring mechanism is described; furthermore, the constructed boards which amplify load cell output are introduced. this approach has some advantages including of providing feedback for motors, evaluating the robot’s ultimate load carrying capacity, improving the motor control system and estimating the vibrating deflections of the end effec...