7United States Department of Energy Office of Electric Transmission and Distribution. "Grid 2030": a national vision for eletricity's second 100 years[R/OL]. [2009-11-10]. http://www. climatevision, gov/sectors/electricpower/pdfs/electric _ vision, pdf.
8EPRI. Integrating new and emerging technologies into the California smart grid infrastructure: a report on a smart grid for California[R/OL]. [2009-10-20]. http://cepsc, com/html/71/ t-36271, html.