The paper deals with problems of data communication over power lines. This technology is referred to as PLC (Power Line Communication). A wider deployment of this technology in practice is currently hampered by a number of drawbacks. They are, in particular, interference with useful signal on lines, interference radiation, limited range of useful signal, and power grid elements that affect the ...

This paper derives a model of high-voltage overhead power line under fault conditions at low radio frequencies. The derived model is essential for design of communication systems to reliably transfer information over high voltage power lines. In addition, the model can also benefit advanced systems for power-line fault detection and classification exploiting the phenomenon of changed conditions...

Reactive power as a utility of ancillary service in restructured environment is supplied by Independent System Operator (ISO). Due to the particular importance of optimal pricing strategy in the power market, the study aims to investigate this problem more closely. To this end, first the problems of restructuring, reactive power generation and its associated costs thereof were reviewed and diff...

A new low power charge recycling ROM (CR-ROM) architecture is proposed. The CR-ROM uses charge-recycling method [4] in bit lines of ROM to save the power consumption. About 90% of the total power used in the ROM is consumed in bit lines [1]. With the proposed method, power consumption in ROM bit lines can be reduced asymptotically to zero if the number of bit lines is infinite and the sense amp...

This study aimed to investigate association of living near high voltage power lines with occurrence of childhood acute lymphoblastic leukemia (ALL). Through a case-control study 300 children aged 1-18 years with confirmed ALL were selected from all referral teaching centers for cancer. They interviewed for history of living near overhead high voltage power lines during at least past two years a...

each year many large scale national projects face execution problems. in this regard, riskmanagement can play a significant role in identifying and taking proper measures. in this research,using project management body of knowledge (pmbok), a risk management procedure has beendesigned and implemented in transmission and high distribution power lines of khorasan regionalelectric company. first, ...

The increasing growth in power demand and the penetration of renewable distributed generations in competitive electricity market demands large and flexible capacity from the transmission grid to reduce transmission bottlenecks. The bottlenecks cause transmission congestion, reliability problems, restrict competition, and limit the maximum dispatch of low cost generations in the network. The ele...