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Equipment commissioning — technical

Equipment commissioning — technical

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High Voltage Power Network Construction — Recommend this title to your library

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Commissioning is not only the final technical stage in power network construction but also one of the most critical. As one highly experienced commissioning engineer once put it, `commissioning is the bucket and shovel stage of a project'. By this, the engineer meant that commissioning cleans up any errors or omissions that have taken place earlier in the project. Perhaps a slight overstatement, but commissioning is certainly that last point at which corrections may be made, thereby ensuring the equipment enters commercial service as a fully compliant design. This chapter will provide a broad overview of commissioning requirements and techniques, covering the most commonly installed types of equipment.

Chapter Contents:

  • 15.1 Commissioning — introduction
  • 15.2 Test procedures and documentation
  • 15.2.1 Test procedures and documentation — overview
  • 15.2.2 Formal commissioning stages
  • 15.3 Substation earthing
  • 15.3.1 Substation earthing resistance
  • 15.3.2 Substation rise of earth potential
  • 15.4 Insulation resistance
  • 15.4.1 Insulation resistance — LV circuitry
  • 15.4.2 Insulation resistance — transformers
  • 15.4.3 Insulation resistance — cables
  • 15.5 Current transformers
  • 15.5.1 Current transformers — requirements
  • 15.5.1.1 Flick test
  • 15.5.1.2 Primary injections
  • 15.5.1.3 CT magnetisation curve
  • 15.5.1.4 CT resistance
  • 15.6 Protection and control equipment tests
  • 15.6.1 Protection and control equipment tests — general
  • 15.6.2 Secondary injection test unit
  • 15.6.2.1 Trip and auxiliary relays — secondary injection
  • 15.6.2.2 IDMT overcurrent relay — secondary injection
  • 15.6.2.3 Distance protection — secondary injection
  • 15.6.2.4 Biased differential feeder protection — secondary injection
  • 15.7 VT supplies
  • 15.7.1 VT wiring — secondary injection
  • 15.8 DC circuitry logic tests
  • 15.8.1 DC logic tests — requirements
  • 15.9 Protection and control — common equipment
  • 15.9.1 Equipment under consideration
  • 15.9.1.1 Busbar protection — general
  • 15.9.1.2 Circuit breaker fail
  • 15.9.1.3 Synchronising scheme
  • 15.9.1.4 Substation control system
  • 15.10 Auto-switching
  • 15.10.1 Auto-switching — general
  • 15.10.1.1 Relay inputs/outputs
  • 15.10.1.2 Off-load simulation tests
  • 15.10.1.3 On-load tests
  • 15.11 HV equipment tests
  • 15.11.1 HV equipment commissioning — general
  • 15.11.1.1 Circuit breakers
  • 15.11.1.2 Power transformer
  • 15.11.1.3 HV cables
  • 15.11.1.4 OHL
  • 15.12 Substation battery systems and DC supplies
  • 15.12.1 Battery system and DC supplies
  • 15.13 Loadability
  • 15.13.1 Loadability test
  • 15.14 Energisation and on-load tests
  • 15.14.1 Circuit energisation and on-load tests — overview
  • 15.14.1.1 Method of energisation
  • 15.14.1.2 Commissioning protections
  • 15.14.1.3 Energisation and soak test
  • 15.14.1.4 Phasing out and synchronising
  • 15.14.1.5 Metering
  • 15.14.1.6 On-load tests
  • 15.15 Substation commissioning overview
  • 15.15.1 Substation commissioning tests and inspections
  • 15.15.1.1 Feeder circuit
  • 15.15.1.2 Transformer circuit
  • 15.15.1.3 Bus section/bus coupler
  • 15.15.1.4 Common equipment
  • 15.15.1.5 Civil structural and building engineering

Inspec keywords: commissioning; electrical installation

Other keywords: equipment commissioning; power network construction

Subjects: Electrical contracting and installation

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