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Advertorials
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Tuesday, 08 November 2011 09:30 |
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ABB’s proven expertise in detecting and measuring partial discharge (PD) activity enables our service customers to gain a better understanding of the condition of their medium voltage (MV) assets – improving network reliability and safety
Partial discharge is simply an electrical discharge or spark that bridges a small portion of the insulation between two conducting electrodes. It can occur at any point in the insulation system where the electric field strength exceeds the breakdown strength of the local area of insulating material.
PD typically results from internal voids within solid insulation – such as bubbles created during the cast resin manufacturing process, as well as from the surface breakdown of insulating material due to contaminants or irregularities – usually resulting from ageing processes. PD activity is a clear indication that an asset’s insulation is deteriorating in a progressive manner that will eventually result in it being unable to withstand the electrical stress, leading to flashover.
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Last Updated on Monday, 28 November 2011 14:09 |
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Features
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Monday, 07 November 2011 17:10 |
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As the UK Government sets its sights on increasing the use of renewable sources, the requirement for offshore wind generation is going to dramatically rise. Not only is the wind farm itself important, but the design of the network and quality of the power are crucial to ensure the energy can be harvested and distributed to its maximum capacity. Here Dr Norman Macleod, technical marketing director for Alstom Grid, looks at these requirements
There are many policies and agreements in place that will no doubt have an impact on how we generate and distribute energy in the future. The government’s target to cut emissions in half by 2025 will play a large role in the increase of renewable technologies and solutions, making them an essential part of the future energy landscape. Although this is currently up for debate and the target may be relaxed, it is still demonstrative of the move towards a greener society.
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Last Updated on Tuesday, 15 November 2011 10:32 |
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Product News
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Wednesday, 26 October 2011 10:34 |
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Power Continuity Systems won the contract for the major power protection systems upgrade to the head office for national operations of Britannia Building Society.
PowerContinuity Systems worked with the national building society, founded in 1856, to install a new N+2 resilient uninterruptible power supply system combined with diesel generators, as part of a major overhaul of the head office in Leek, Staffordshire.
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Last Updated on Monday, 31 October 2011 12:06 |
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Product News
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Tuesday, 25 October 2011 10:50 |
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A new high-speed data-capture option has been introduced for the Yokogawa
WT1800 precision power analyser.
The new /HS option provides fast, accurate measurements of power parameters
such as voltage, current, power, torque, speed and mechanical power with
millisecond response. This allows it to capture numeric data on the change
of status during one rotation of a motor when the motor is started, when the
rotation speed changes, or when the load condition varies.
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Last Updated on Monday, 31 October 2011 14:11 |
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News
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Tuesday, 25 October 2011 10:38 |
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Outram Research has announced a new revision of firmware for their PM7000 power quality analyser, Waveform Capture Extension, which allows capture of long-duration transients and waveform events. The new feature is designed to help engineers troubleshoot long-duration problems and to see the consequential impact of disturbances.
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Last Updated on Wednesday, 16 November 2011 12:00 |
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