Electrical Engineer NEI Electric Power Engineering, Colorado
Presentation Description: When sizing the medium voltage cables on wind projects, it is common to perform ampacity analysis assuming a soil dry-out area around the cable, and a load factor of 100%. Solar and energy storage projects may already take advantage of reduced load factor, but this is not commonly used on wind projects. This presentation will contemplate the validity of both soil dry-out and load factor. It will be shown that most cables used on wind projects today are likely oversized and thus, project capex could be reduced if more realistic assumptions were used in the ampacity calculations. The impact of reduced cable sizes on annual electrical losses will also be addressed
Explain the difference between symmetrical and asymmetrical fault currents.
Understand how the fault current assumption used in a short circuit calculation can impact the final cable procurement quantities and capital cost.