SCH Number 2007022043

Project Info

Title

Power Line-Elkhorn Substation Capacity Expansion Project

Description

SMUD proposes to replace a 3.75 megavolt-amperes (MVA) transformer with a 25 MVA transformer, and a 12.5 MVA transfer with a 25 MVA transformer, increasing the capacity of the substation from 16.25 to 50 MVA. Additional improvements include a 69,000-volt (69-kV) bus structure and three 69-kV circuit breakers, new switchgear, new cement slabs for the equipment and grounding, and fencing to encompass the new footprint of the substation. The existing 69-kV pole line would remain. Reconductoring would be required to increase ampacity for the capacity increase. Additionally, five new 12,000 volt (12-kV) feeders would be added (totaling eight 12-kV feeders), and the existing 69-kV pole arrangement to the transformers would be replaced. The existing substation site is connected to the Elverta Circuit #1 and the Natomas Circuit #2 existing overhead (69-kV) lines within SMUD's subtransmission grid system.

4 documents in project