Rogowski coils in smart transformer monitoring

  Intelligent electricity network (smart grid) applications such as power generators, home energy management (HEM), battery monitoring systems (BMS), MV/LV substations, sub-metering, electrical vehicle stations, and solar power plants integrate more and more current sensors to ensure reliable integration of distributed renewable energy, energy storage, production and consumption. This leads to the implementation of more […]

Interpreting sweep frequency response analysis measurements

  Power transformers are critical components in an electrical power network. Testing, diagnostics and reliable condition assessment of power transformers becomes increasingly relevant due to the ageing of transformer fleets around the world. Transfer function measurements have been used as a diagnostic tool to detect mechanical failures in power transformers. Geometrical changes in the transformer […]

Breaker coordination: what you really need to know

  Selective coordination is an electrical system design practice that improves reliability. Breaker coordination methodology increases uptime by limiting power outages to the branch of an electrical system where a problem occurs without knocking out other areas of the system. When a fault happens, the closest overcurrent protective device opens either a breaker or a […]

Cybersecurity information sharing in electric utilities

  Cyber threat sharing will play a major role in the electric utility industry in protecting our critical infrastructure. Some utilities in the United States believe there is a need to share the cyber threat information so that they will be better prepared to respond to the cyber-attacks on an electrical grid system. Last year […]