Results 201 to 210 of about 303,318 (264)

Upgrading power system protection

IEEE Industry Applications Magazine, 2009
The protection improvements made to mitigate AFH through the use of muP relays provide substantial benefits to improve safety, monitoring, protection, and control.
Jeff Hill, Ken Behrendt
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Photovoltaic powered regulated cathodic protection system

Solar Energy, 1994
Abstract The objective of a cathodic protection system is to protect metallic structures against corrosion. To achieve this, a sacrificial anode is connected to the protected structure (which acts as a cathode) through a d.c. power supply. To stop the corrosion, the protected structure requires a constant current.
Wagdy R. Anis, Hany A. Alfons
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Integrated protection system design for shipboard power system

IEEE Electric Ship Technologies Symposium, 2005., 2005
This paper presents an advanced protection system design for the main power system of an all-electric ship. Considering the unique characteristics of shipboard power systems, current differential scheme has been chosen as the most reliable primary protection scheme.
Yanfeng Gong, Yan Huang, Noel N. Schulz
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Protecting computer systems against power transients

IEEE Spectrum, 1990
The sources of electrical transients, broadly interpreted as occurrences of any disturbance, either on the power line or the computer system's data line, are reviewed. Common transients are overvoltages due to lightning strikes, transients caused by switching sequences in the power system, and undervoltages which could be caused by a nearby start-up of
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Power system protection-power monitoring-data logging-remote interrogation system

Forty-Second Annual Conference of Electrical Engineering Problems in the Rubber and Plastics Industries, 2002
A power monitoring system is described that uses microprocessor technology to provide protection, real-time status displays, and event logging for industrial AC power distribution and generation systems. The system consists of a display and monitoring unit connected by a single twisted-pair EIA RS-485 communications interface to as many as 32 ...
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Recent Trends In Power System Protection

TENCON '91. Region 10 International Conference on EC3-Energy, Computer, Communication and Control Systems, 2005
The recent trend in protection has been a shift to Numerical Protection Techniques, thanks to the development of single chip digitaI signal pracessiors with high number crunching capability, which has made it possible to design digital filters in real time.
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AN EXPERT SYSTEM USED IN POWER SYSTEM PROTECTION

IFAC Proceedings Volumes, 1989
Abstract An expert system has been developed for recording and modelling knowledge of power engineering experts in the domain of protection coordination for industrial power systems. This paper describes a methodology used to isolate, identify and codify the knowledge and steps used by design experts when taking an initial design specification ...
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