Trans Bay Cable

The Trans Bay Cable is a high-voltage direct current underwater cable interconnection between San Francisco, California and Pittsburg, California.[1] The 53 mi (85 km) cable under San Francisco Bay and through the Carquinez Strait can transmit 400 megawatts of power at a DC voltage of ±200 kV, enough to provide 40% of San Francisco's peak power needs.[2] Owned by SteelRiver Transmission Company, the line connects PG&E's Potrero Substation to its 230 kV transmission line in Pittsburg. The system was completed in November, 2010.[2] The Trans Bay Cable project was the first HVDC system to use the Modular Multi-Level Converter (MMC) system.[3][4]

References
  1. Wald, Matthew L. (March 16, 2010). "Underwater Cable an Alternative to Electrical Towers". New York Times. Retrieved 2010-03-17.
  2. "Pattern Energy Announces Completion of the Trans Bay Cable Project Under San Francisco Bay" (Press release). Pattern Energy Group LP. 2010-11-29. Retrieved 2011-03-02.
  3. Lesnicar, A., Marquardt, R., An innovative modular multi-level converter topology for a wide power range, IEEE Power Tech Conference, Bologna, Italy, June 2003.
  4. Westerweller T., Friedrich, K., Armonies, U., Orini, A., Parquet, D., Wehn, S., Trans Bay cable – world's first HVDC system using multilevel voltage-sourced converter, CIGRÉ session, Paris, 2010, paper reference B4-101
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