Featured Content

• 

  Case Study of Partial Discharge & Commissioning Testing of Long (+20 km) 400 kV XLPE Cables

  in HV/HP Testing

  Even the most rigorous factory testing cannot guarantee that cables will be installed correctly or that they will not be damaged during transport or laying and future owners require commission tests before accepting ownership. Read More >

• 

  Procedures & Challenges When Dimensioning DC Insulators

  in Insulators

  Insulators require careful scrutiny since they show significantly different behavior under DC stress than under AC stress. Read More >

• 

  Evaluating Condition of Old Porcelain Cap & Pin Suspension Insulators

  in Insulators

  Many insulators in service are either reaching or have already crossed the threshold of their expected operational lifetime. Read More >

• 

  Failure of Transmission Line Insulators

  in Insulators

  It is unrealistic to expect that any network component can last forever without failing and it can therefore be assumed that some proportion of insulators will fail in service after a certain period of time. Read More >

• 

  Increasing Transformer Reliability by Proactive Bushing Fleet Management

  in All Articles, Bushings

  If a bushing fails, the typical result is extended downtime of a power transformer with not only heavy financial losses but also challenges imposed on the system operator to compensate for the lost unit. Read More >

• 

  PD Measurements for HVDC Cable Projects

  in Cables & Accessories

  For the first time ever, long land-based transmission links are being implemented with extruded cable systems at a nominal voltage of ±525 kV. Read More >

• 

  Applying Sheath Voltage Limiters to Protect HV Power Cables

  in Arresters, Cables & Accessories, Utility Practice & Experience

  If segmentation is used to interrupt induced sheath current, measures must be taken to limit voltage induced on the sheath during transient events. Read More >

• 

  Protección de terminales neutros de transformadores eléctricos en subestaciones de distribución

  in Bujes, INMR Español, Mantenimiento

  Read More >

• 

  Implementing a Compact 400 kV Line

  in Utility Practice & Experience

  Integration of renewable energy sources into the electrical system in Germany has required adapting and expanding the existing grid. Read More >