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Utility Practice & Experience

Pole Designs Optimize Aesthetics, Feasibility & Cost

June 22, 2018 • ARTICLE ARCHIVE, Utility Practice & ExperienceComments (0)

In many countries, construction of new HV and EHV overhead lines has triggered divisive public debate, with particular resistance against the use of traditional lattice towers. In the face of this, one way to promote greater acceptance and also minimize the impact of new lines is by using alternatives such as compact and ‘designer’ structures. ...

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Placing a Price on Momentary Customer Dips

June 16, 2018 • ARTICLE ARCHIVE, Utility Practice & Experience

Several years ago, traffic in Canada’s largest city descended into chaos when a 230 kV capacitor bank adjoining a 16-lane expressway shorted out and caught fire just after being energized. The voltage dip from the short circuit lasted for only one-fifth of...

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Insulator Corrosion Affected HVDC Lines in China

June 9, 2018 • ARTICLE ARCHIVE, Article of the week, Utility Practice & Experience

In March 2011, problems of electrolytic corrosion on the caps of ceramic cap & pin insulator strings began appearing on the world’s first ±800 kV HVDC line, located in southern China. This line – known as Chu-Sui – runs across 1200 km of mostly...

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Composite Bushings with RTV Coatings Combat Pollution at Substation in Israel

June 2, 2018 • ARTICLE ARCHIVE, Bushings, Utility Practice & Experience

The power system in Israel operates in a sub-tropical as well as desert environment. A long dry season lasts some eight months during which all types of contaminants – from marine to dust to industrial and agricultural – accumulate on insulators. This...

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Wireless Leakage Current Monitors to Improve Network Performance

June 2, 2018 • ARTICLE ARCHIVE, Utility Practice & Experience

As part of a program to provide an infrastructure for transmission line and substation monitoring, EPRI in the U.S. has developed remote sensors to monitor the condition of important assets. This INMR article from 2015, contributed by Andrew J. Phillips and...

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Maintenance Strategy Designed to Support Gulf Regional Energy Security

May 26, 2018 • ARTICLE ARCHIVE, Utility Practice & Experience

Under the aegis of the GCC Interconnection Authority (GCCIA), members of the Gulf Co-operation Council, including Kuwait, Bahrain, Qatar, the United Arab Emirates, Oman and Saudi Arabia as host, undertook an ambitious project to link their electrical systems....

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Ageing Lake Crossing Presents Range of Asset Management Issues

May 19, 2018 • ARTICLE ARCHIVE, Utility Practice & Experience

In a day when power utilities across the globe have to increasingly deal with ageing power infrastructure, one transmission line crossing a wide lake presents an example of the types of asset management issues that can be involved. The project in this case is...

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Application of Composite Interphase Spacers to Prevent Conductor Galloping

May 12, 2018 • ARTICLE ARCHIVE, Utility Practice & Experience

The use of composite insulators on transmission lines has increased steadily in recent years due to their well-known performance advantages as well as their lower acquisition and life cycle costs. At the same time, these insulators have also offered solutions...

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