Patent ID: 6858953

Claim:
A power control interface between a power output of an unstable power source such as a wind farm and a power transmission line, comprising: (a) an electrical energy storage coupled between the unstable power source and the power transmission line to store excess power output when it is above a normal output level of the unstable power source and to release stored electrical energy to add to the power output when it is below the normal output level of the unstable power source; (b) a control system which receives a power source data signal derived from monitoring the power output of the unstable power source and a transmission line data signal derived from monitoring the power transmission line, and which determines when electrical energy stored in the electrical energy storage is to be released to add to power output to the power transmission line to compensate for conditions of decreased power generation encountered by the unstable power source, or when excess electrical energy generated during conditions of increased power generation encountered by the unstable power source is to be stored in the electrical energy storage; and (c) an electronic compensation module which receives a control signal from the control system corresponding to its determination and operates to release electrical energy stored in the electrical energy storage to add to power output to the power transmission line to compensate for decreased power source output, and to store excess electrical energy from increased power source output in the electrical energy storage in accordance with said determination.