765 kV grid will be superimposed on existing AEP transmission system
Journal Article
·
· Power Eng.; (United States)
OSTI ID:7065739
Serving as a backbone carrier of bulk power, the new grid will extend some 1050 miles in five states. Construction is scheduled to start in 1967, and is expected to be completed in 1972. Total cost of the project, including new substations and switching stations to tie it into existing lines, is estimated at $200 million. Capacity of a line goes up as the square of the voltage. Thus, for a line of a given length, one 765 kV line can carry about five times as much power as a 345 kV line, or about 30 times as much as a 138 kV line. Cost of the 765 kV line is about double that of the 345 kV line and about four times that of the 138 kV line. This ratio of capacity to cost makes higher voltages necessary to keep costs down as power demand continues to grow.
- OSTI ID:
- 7065739
- Journal Information:
- Power Eng.; (United States), Journal Name: Power Eng.; (United States) Vol. 70; ISSN POENA
- Country of Publication:
- United States
- Language:
- English
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