IET Keynote Address: Offshore Windfarm Design Issues

IET TV offers some good keynote presentations in various engineering sectors from leading engineering experts. Here’s one I found on offshore wind farm design issues from Andrew Donalson, SSE. It gives some good insight into reallife wind farm design, installation, and project challenges, and how SSE is currently dealing with these challenges.

Presentation video link: http://goo.gl/YT7KZ

I hope you will like as much as I did.

Online Overhead Line High Voltage Inspection

This is a video showing the inspection of a live overhead electric transmission line.

For those power system engineers like me who spend most of their time at their work desk with ocassional field trips, this is one darn video bringing in the good blood rush up their veins. Pretty impressive and highly motivational!

Have Fun!

Ireland Minimum Tranmission Line Sags Limits

Typical transmission line mandatory minimum safe heights from ground level:

110kV: 7m over ground, 8m over roads;

220kV: 8m over ground, 9m over roads;

400kV: 9m over ground, 10m over roads.

This take into account the worst sag possible.

The following are mandatory transmission line safe height limits [1] in Ireland:

• 110kV: 7m over ground, 8m over roads;
• 220kV: 8m over ground, 9m over roads;
• 400kV: 9m over ground, 10m over roads.

Compliance to these limits are required irrespective transmission line loading and environmental operating conditions. Please feel free to post for other countries or transmission networks if you have. Thank you! ^__^

References and Reading:

1. O. M. Armstrong, “Transmission Line Conductor Sag Measurement with LIDAR Survey and Non-contact Temperature Determination,” in 2007 Proc. RSPSOC. [Online]. Available: http://www.ceg.ncl.ac.uk/rspsoc2007/papers/122.pdf, [Accessed Aug. 27th, 2009].