07622816 is referenced by 31 patents and cites 13 patents.

A power control interface between an unstable power source such as a wind farm and a power transmission line employs an electrical energy storage, control system, and electronic compensation module which act together like an “electronic shock absorber” for storing excess power during periods of increased power generation and releasing stored energy during periods of decreased power generation due to wind fluctuations. The control system is provided with a “look ahead” capability for predicting power output (wind speed conditions) and maintaining energy storage or release over a “narrow-band” range despite short duration fluctuations. The control system uses data derived from monitoring the wind farm power output and the power transmission line, and employs system-modeling algorithms to predict narrow-band wind speed conditions. The power control interface can also use its energy storage capacity to provide voltage support at the point of injection into the power transmission system, as well as fault clearance capability for “riding out” transient fault conditions occurring on the power transmission line.

Title
Power control interface and energy storage between a wind farm and a power transmission system
Application Number
12/246038
Publication Number
7622816 (B2)
Application Date
October 6, 2008
Publication Date
November 24, 2009
Inventor
Karl E Stahlkopf
Honolulu
HI, US
Agent
Leighton K Chong
Assignee
Hawaiian Electric Co
HI, US
IPC
H02J 3/00
F03D 9/00
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