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Thermal Inspections Help Florida Utility Prioritize Maintenance at Substations

November 18, 2017 • ARTICLE ARCHIVE, Inspection, MaintenanceComments (0)

Among the best known technologies to assess the condition of power network assets are infrared and ultraviolet imaging. Both have been used now for decades and rely on specialized cameras that have evolved considerably over the years. The common direction of the latest generations of these cameras are towards more portability, improved data storage and ...

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Composite Insulator Design for New U.K. Transmission Lines

November 18, 2017 • ARTICLE ARCHIVE, InsulatorsComments (0)

Changes to generation over the next decade mean that there will be substantial investment in expanding and upgrading the U.K.’s transmission network. National Grid has embraced the need to harness innovation to build new and upgrade existing transmission...

Quantification of Hydrophobic Properties

November 18, 2017 • ARTICLE ARCHIVE, Editorial Columns, Reporting from CIGREComments (0)

Hydrophobicity is perhaps the single most recognized property of polymeric materials used for outdoor insulation since it provides added value in terms of enhancing pollution performance. However, only the family of silicone rubber polymers has demonstrated...

Coated Glass Insulators Used to Resolve Insulation Problems in High Pollution Service Environments

November 18, 2017 • ARTICLE ARCHIVE, glassComments Off on Coated Glass Insulators Used to Resolve Insulation Problems in High Pollution Service Environments

Pollution has had an important impact on insulators installed across the transmission network of the Spanish TSO, Red Eléctrica de España (REE). This INMR article, contributed by Elena Nogueroles, Ignacio Serrano, Andrés Pérez and Daniel Blanco reports on...

Identifying Quality Surge Arresters

November 18, 2017 • Arresters, ARTICLE ARCHIVEComments (0)

Power system engineers all face a similar dilemma at one time or other when trying to identify which product offers the quality they require – especially in today’s global market with its many competing suppliers. Yet making the right decision can prove...

Overview of Test Requirements & Case Histories for HV Bushings

Overview of Test Requirements & Case Histories for HV Bushings

November 18, 2017 • ARTICLE ARCHIVE, BushingsComments (0)

Bushings are key components of HV substation equipment such as transformers and switchgear, allowing conductors to transfer energy from one insulating medium to another. Most typically, this will be from an oil or SF6 insulation environment to air. Bushings...

Dealing with Deterioration of Silicone Insulation in Critical Applications

November 18, 2017 • ARTICLE ARCHIVE, Reporting from CIGREComments Off on Dealing with Deterioration of Silicone Insulation in Critical Applications

Field experience with composite insulators having polymeric housings is available now for about 40 years and the clear trend is that silicone rubber has become the material of choice. The main reason is its long-term, dynamic hydrophobicity, which can...

Protecting Overhead Lines & Substations from Wildlife Induced Outages

November 11, 2017 • ARTICLE ARCHIVE, Wildlife ProtectionComments (0)

The requirement for more reliable and cost effective power networks continues, with downtime measured (and penalized) in minutes as well as seconds. Over the past 20 years, there has been increasing realization that the uncontrollable external impact of...

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