ELECTRONIC EQUIPMENT – MONITORING

PARTIAL DISCHARGES MONITORING

The appearance of partial discharges is the most important indicator of the degradation of insulation system, local mechanical and / or electrical degradation processes.

Energy transformers partial discharges monitoring

On-line monitoring, ie continuous measurement of partial discharges in the transformer, allows you to detect the beginning of transformer problem in the in exploitation, reduces the possibility of large damage, avoids unplanned transformers from exploitation and increases the reliability of the entire network.

MOISTURE AND TEMPERATURE MONITORING IN ENERGY TRANSFORMER OIL

Moisture sensors in oil, robust and simple by construction, immune to electromagnetic interference, suitable for field application, are easy to install on the existing oil installation of transformers.

During monitoring, it is continuously measured:

  • Moisture in oil in PPM (Mg / kg) (the same algorithm as the Karl Fisher method)
  • Transformer oil temperature
  • Relatively saturation of moisture at that temperature

DGA MONITORING IN ENERGY TRANSFORMER OIL

Gases in transformers can encourage various places: from mineral insulation oils, paper insulation, partitions, other materials and are related to high temperatures (150 ° C to 1,000 ° C) of these materials, and symptoms are poor design or construction, over number electric and thermal overloads, excessive number of short compounds and general poor state of transformers.

Dissolved gas analysis (DGA) or analysis of dissolved gases in transformer oil, automatically through a closed gas chromatographer loop, is the best indicator of the state of transformers and with the most comprehensive state analysis allows you to maintain the transformer reliability.

The application of DGA increases the reliability of the network through the reduction of transformer failures, prolongs the life of transformer avoiding overload and decay of insulation, increases the network capacity through temperature management and dynamic load changes.