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Transient Thoughts

Lightning Protection for HVDC Lines

April 14, 2018 • Transient ThoughtsComments (0)

The design of AC overhead lines requires considering many factors, including wind and ice loads, strength of poles and insulator attachment hardware, line voltage and transient overvoltage stresses as well as insulator pollution exposure. It is therefore difficult to define any uniform design methodology for such lines, sometimes even within a single power...

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Shielding failures & stroke flashovers

Shielding Failures & Stroke Flashovers

January 2, 2018 • ARTICLE ARCHIVE, Transient Thoughts

The train ride from Narita Airport to Tokyo offers occasional glimpses of the tall, multi-circuit and multi-voltage transmission lines common throughout Japan. Starting about 2000, local researchers began observing direct lightning flashes on prototype double... Read More

Shielding Failures & Stroke Flashovers

January 2, 2018 • ARTICLE ARCHIVE, Transient Thoughts

The train ride from Narita Airport to Tokyo offers occasional glimpses of the tall, multi-circuit and multi-voltage transmission lines common throughout Japan. Starting about 2000, local researchers began observing direct lightning flashes on prototype double... Read More

Overcoming Lightning Protection Challenges

February 4, 2017 • ARTICLE ARCHIVE, Editorial Columns, Transient Thoughts, Utility Practice & Experience

One of the ways I excite graduate students about career opportunities in the electrical power industry is a weekly lecture called ‘In the News …’. This year interest has expanded so rapidly in the course Smart Grid Topics that a second section was... Read More

Superior Power Quality Even Under Lightning

December 3, 2016 • Transient Thoughts

Advances in IEEE Standard 1410/2010 have called for additional insulation strength to withstand induced overvoltages from nearby lightning strikes in areas of high soil resistivity (i.e. 1000 ohm meter). However, large power utilities, such as KEPCO in Korea... Read More

Conductor Vibration Control When Applying Line Arresters

Conductor Vibration Control When Applying Line Arresters

May 28, 2016 • ARTICLE ARCHIVE, Transient Thoughts

I was recently invited to Tsinghua University in Beijing to give lectures and, while there, I was searching for photos of applications of transmission line arresters in China to support my topic. Then – lo and behold – in my email inbox came the Photo of... Read More

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