Power system connection overview

Preface of my work

- Electrical, Instrument & Control (Instrument and control part weak part, still need more experience and study)

Power receiving (Power feeding, power energization)
- Check the contstruction statue and quality. (Construction complete certificate)
- Check required document for the power receiving (approved drawing, quality document, protection relay calculation sheet, equipment site test item & procedure & test protocol, contractual requirements)
- Check function & interlocking test of equipment

Related equipment
- GIS (230kV, 115kV High voltage, . . . )
- Generator step up transformer (230kV, 115kV . . . )
- Unit Aux Transformer for house load consumption
- Exciation Transformer for Generator excitation system
- Generator circuit breaker
- Generator
- MV Switchgear
- LV Switchgear
- Motor control center
- Local panel for various equipment
- Protection panel (GIS, Transformer, Generator, Transmission line)
- Control system ( DCS, SCADA, PLC )


Operation & control
- Operation of above equipment
- All kind of electrical equipment (Motors, VFD, Heaters, Motor operating valve, solenoid)

Role and Responsiblilty

For the EPC contractor.
They have to do the engineering, procurement, construction and commissioning.
and the work scope should be clear and precise to prevent duplication or lack of work. this kind of things will be happened for the EPC beginers.