APPENDIX 2F Electrical Engineering Design Criteria（附录2 f电气工程设计标准）.pdf

APPENDIX 2F Electrical Engineering Design Criteria 4.0 ELECTRICAL DESIGN CRITERIA This section describes the facility’s principal electrical equipment and systems, their functions, and the general criteria upon which their design will be based. An overview is shown on the main single-line diagram in Appendix B. 4.1 Interconnections to Electrical Utilities Power generated will be delivered to the utility transmission system through a 230kV breaker on the highvoltage side of each generator step-up transformer Startup power will be backfed through this same interconnect from the utility system. Protection, control and communication interface will be at the utility plant fence line. The Engineer will be responsible for designing the high voltage interface facilities associated with the plant protection, control and communication as well as all related design, such as grounding, cabling, and raceway. 4.2 Electric Power System – General Power will be generated by two Combustion Turbine Generators (CTG) and a Steam Turbine Generator (STG). Individual 2-winding generator step-up transformers will step up the voltage from each generator for connection to the utility high voltage system. The CT generator will be connected to the 16.5kV generator breaker with isolated phase bus duct. The line side of the generator breaker will then be connected to the Generator Step Up Transformer (GSUT) via isolated phase bus duct. The ST generator will be connected directly its associated GSUT via isola