• Self-Driving Drones for Power Line Inspection

    August 11, 2018 • ARTICLE ARCHIVEUtility Practice & Experience

    Power line assets must be periodically inspected to ensure reliability and longevity. Since inspections with helicopter, foot patrol or tower climb are hazardous and expensive, unmanned aerial vehicles (UAVs) provide a safer and more efficient… Read More

  • Designing for Reliability or Resilience

    August 11, 2018 • ARTICLE ARCHIVECommentary by Pigini

    Projections on climate change confirm that power systems will be exposed to increasing threats of the type that jeopardize continuity and quality of supply. How best to respond to this evolving situation? Do we need… Read More

  • Safety Key to Continued Hollow Core Insulator Growth

    July 28, 2018 • ARTICLE ARCHIVEHollow Core

    In an exclusive contribution to INMR, insulator expert, the late Richard Martin, explained why safety is increasingly the driver for changeover from porcelain to hollow core composite housings. The composite apparatus housing is now being… Read More

  • Hazards of Lightning on Power Lines

    July 28, 2018 • ARTICLE ARCHIVEUtility Practice & Experience

    In many countries across the globe, lightning accounts for a large share of line tripping and is linked to both season and specific region. Based on the physical processes involved, lightning induced overvoltages fall into… Read More

  • Protecting Overhead Lines & Substations from Wildlife Induced Outages

    July 21, 2018 • ARTICLE ARCHIVEWildlife Protection

    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… Read More

  • Meeting Modern Challenges in Asset Condition Monitoring & Diagnostics

    Modern Challenges in Asset Condition Monitoring & Diagnostics

    July 21, 2018 • ARTICLE ARCHIVEUtility Practice & Experience

    Ensuring a high level of availability in supply of electrical power has traditionally been accomplished through sufficient system redundancy as well as specification of only well-proven and sometimes over-dimensioned network components. Intensive manpower and time-based… Read More

  • Dielectric Strength & Air Density

    July 21, 2018 • ARTICLE ARCHIVECommentary by Pigini

    While a number of atmospheric parameters can affect the dielectric strength of external insulation, relative air density (δ) and absolute humidity are considered the most significant. Here, I will focus on the former, which plays… Read More

  • ‘Externalities’ of Overhead Power Lines

    July 21, 2018 • ARTICLE ARCHIVECommentary by Pigini

    Public opposition and growing environmental awareness now make identifying corridors for new overhead lines an increasingly complex process – especially near densely populated or sensitive areas. Given this, it has become important to examine methodologies… Read More

  • Modeling E-Field on Transmission Lines

    July 14, 2018 • ARTICLE ARCHIVETransmission Lines

    When designing transmission lines, the overriding criterion has typically been mechanical performance since, if a design does not perform mechanically, electrical design becomes irrelevant. These days, however, mechanical design of transmission lines is robust due… Read More

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