Advanced Power Quality Diagnostics

HES have specialist technicians and engineers with vast experience in power quality. We can offer a one stop service starting with analysis, running all the way through to supporting any mitigating products that may be required.

 Applications include:

  • Commercial
  • Industrial
  • Mining
  • Oil and Gas
  • Renewables
  • Power generation
  • OEM support

Our diagnostic reporting will provide a clear and easy pathway for future works. With support from the HES engineering department we can offer tailor made solutions in the following:

  • Power quality recording using high tech monitoring equipment capable of capturing high speed anomalies.
  • Failure analysis
  • Accurate analysis of results
  • Accurate and clear reporting of results
  • Sales of power quality products
  • Installation of power quality products
  • Commissioning of power quality products
  • Long term support of power quality products

Advanced Diagnostic Testing

  • Offline and online partial discharge monitoring for
    • HV cables
    • Switchgear
    • Motors
    • Generators
    • Transformers
  • Advanced condition assessment for transformers and HV bushings utilising cutting-edge techniques alongside expert interpretation of results (such as FRA, DFR, DGA, PD analysis)
  • Expert cable fault location for all types of cables and faults
  • Advanced testing and condition assessment for high voltage circuit breakers and switchyard equipment

 

Pre and Post Failure Analysis

  • Detailed diagnostic testing to assist in asset life prediction
  • Forensic examination of failures and root cause analysis in the following fields
Transformers:

  • Transformer windings
  • Tap changers
  • Bushings
  • Oil diagnostics
High Voltage switchboards:

  • Insulation failure diagnostics
  • Aged insulation pre failure assessments

High Voltage Cables:

  • Early detection from testing
  • Post failure analysis
 Protection

  • Protection scheme failure / intertripping
  • Protection event log post trip failure assessment

 Earthing

  • System failures and earth grid investigations
  • Circulating currents and earthing system trips

Condition Monitoring

  • Asset health reviews for all HV assets.
  • Service life assessments of assets
  • TX oil online DGA and cooling systems
  • Installation of short-term or permanent partial discharge sensors and monitors
    • HV cables
    • Switchgear
    • Motors
    • Generators
    • Transformers