By Isabelle Heriakian / Published on Thu, 2009-11-05 01:00
This case study presents a methodology for improving power quality in an important industrial estate. A project was initiated to reduce the number of interruptions and enhance power quality in the estate and focused on reducing weak points in the power distribution system by inspecting distribution lines in both customer and utility areas. Once weaknesses were identified, corrective action would be taken and preventative measures taken to prevent re-occurance in order to provide high power availability to customers.
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By HDK / Published on Wed, 2009-08-05 15:26
Customers want a reliable, affordable and sustainable electricity supply. Over the years the emphasis between these three items have been shifted.
What do you expect that customers will value most in the future electricity supply? We welcome your comments and votes on this question.
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By Sergio Ferreira / Published on Thu, 2009-05-28 13:41
Is it possible to reduce the risk of electrically induced fires by 50% and reduce the cost of motor breakdown's and downtime?
This webinar will shed some light over a solution for preventive maintenance and fault identification in industrial applications as tool for cost saving/avoidance and performance improvement.
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By David Chapman / Published on Tue, 2009-05-19 12:58
Reader Question
I would like to understand, how the power conditioner rating to the actual load determines the ride through capability for the power conditioner.
Literature from lpqi states that the power conditioner should be oversized by 2.5 times that of the load. Increasing the size makes the power conditioner less efficient. What is the ride through benefit as compared to using a power conditioner that is sized to the load.
Regards, Theo
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By Hans De Keulenaer / Published on Tue, 2009-04-21 18:02
Cables are important components in the transportation and distribution of electricity. Due to the increased need for power, but also because overhead power lines are often replaced by (underground) power cables in densely populated areas, the importance of power cables has grown over the years.
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By Hans De Keulenaer / Published on Fri, 2009-03-06 20:45
Paul Hines, Jay Apt, and Sarosh Talukdar , Carnegie Mellon Electricity Industry Center
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By Hans De Keulenaer / Published on Wed, 2009-02-25 17:33
The use of electronic loads is increasing very fast. The gap between demand and the short generation is also increasing very fast. These have made the power quality, reliability and stability a critical issue. Further, there is continuous thrust on optimal utilization of the non-conventional energy resources due to price rise of oil and environmental issues, in addition to the fact that the central power station with improved quality of power has made it necessary to use the energy storage technology.
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By Bruno De Wachter / Published on Thu, 2009-01-29 06:30
On blackouts and cascading failures
An article in Scientific American last month discussed an interesting analogy, namely the one between the electricity network and global financial networks.
According to the author Jeffrey D. Sachs, both are network systems in which a local problem can undergo a system-wide amplification leading to a general catastrophe. Such amplification is caused by what Sachs calls 'rational panics'. Each node in the network has certain rational rules that are created to protect its own stability. However, if all those rules should conclude simultaneously to withdraw from the system, the whole network starts collapsing.
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By Hans De Keulenaer / Published on Sat, 2009-01-17 12:06
The Department of Energy's (DOE) Electricity Advisory Committee (EAC) has released three reports prepared for the Secretary of Energy's consideration. These reports review challenges facing DOE and the Nation in many important electricity areas, and include recommendations for policy and program initiatives. They address issues surrounding generation and transmission adequacy, energy efficiency and demand response, deployment of energy storage technologies, and deployment of smart grid technologies. The EAC was chartered by Secretary Samuel W.
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By Hans De Keulenaer / Published on Wed, 2008-11-26 20:25
Ali Kazemi, Schweitzer Engineering Laboratories, Inc.
Casper Labuschagne, Schweitzer Engineering Laboratories, Inc.
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By Hans De Keulenaer / Published on Wed, 2008-10-15 12:04
Bogumi Dudek
This paper presents the development of live line working techniques on the electrical devices both the AC and DC conditions in Poland. It is also proposed the possible classification of outage free maintenance technique and presents Polish achievement for every methods.
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By Hans De Keulenaer / Published on Wed, 2008-09-17 08:21
There are many problems in practical diagnostics of high-power, quirrel-cage induction machines, operated in industrial conditions. These problems make the diagnostics a difficult matter. The problems appear already at the stage of gathering diagnostic signals. The only practically accessible signals are the currents on secondary sides of current transformers monitoring supply currents of separate machines. Due to the proximity of other conductors, carrying high currents, these signals are sometimes accompanied by heavy background noise.
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