POWER GENERATION SYSTEM

• US 20160352102A1
• Filed: 05/23/2016
• Published: 12/01/2016
• Est. Priority Date: 05/26/2015
• Status: Active Grant

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: ZHAO, Tong, LI, Rong, FU, Xu
• Granted Patent: US 10,547,173 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F03D 7/048 controlling wind farms
• CPC Class Codes: F03D 9/11 storing electrical energy
• CPC Class Codes: F05B 2270/502 electrical means, e.g. relays or switches
• CPC Class Codes: H02J 1/10 Parallel operation of dc sources
• CPC Class Codes: H02J 2300/28 The renewable source being wind energy wind motors F03D
• CPC Class Codes: H02J 3/32 using batteries with converting means
• CPC Class Codes: H02J 3/381 Dispersed generators
• CPC Class Codes: Y02E 10/72 Wind turbines with rotation axis in wind direction
• CPC Class Codes: Y02E 10/76 Power conversion electric or electronic aspects
• CPC Class Codes: Y02E 70/30 Systems combining energy storage with energy generation of non-fossil origin

Abstract

A power generation system comprising a plurality of power generation units; a plurality of energy storage units; a plurality of switch units for connecting or disconnecting the power generation units and the energy storage units; and a controller for controlling the switch units to disconnect one or more idle power generation units from their corresponding energy storage units when the idle power generation units stop operating and to connect the disconnected energy storage unit to one operating power generation unit of the plurality of power generation units based on states-of-charge of the energy storage units. The power generation system may make best use of the energy storage units.

Claims

1. A power generation system, comprising:

a plurality of power generation units;

a plurality of energy storage units;

a plurality of switch units for connecting or disconnecting the power generation units and the energy storage units; and

a controller for controlling the switch units to disconnect one or more idle power generation units from their corresponding energy storage units when the idle power generation units stop operating and to connect the disconnected energy storage unit to one operating power generation unit of the plurality of power generation units based on states-of-charge of the energy storage units.

2. The power generation system of claim 1, wherein the controller is used to further connect the disconnected energy storage unit to the one operating power generation unit based on distances from the disconnected energy storage unit to the operating power generation units.

3. The power generation system of claim 2, wherein, when a state-of-charge of the disconnected energy storage unit is less than a lower threshold, the controller is used to control the switch units to connect the disconnected energy storage unit to the one operating power generation unit with a maximum of first indicators based on the first indicators of the operating power generation units, the first indicators having positive correlations with the states-of-charge and negative correlations with the distances.

4. The power generation system of claim 2, wherein, when a state-of-charge of the disconnected energy storage unit is less than a lower threshold, the controller is used to control the switch units to connect the disconnected energy storage unit to the one operating power generation unit with a minimum of first indicators based on the first indicators of the operating power generation units, the first indicators having negative correlations with the states-of-charge and positive correlations with the distances.

5. The power generation system of claim 2, wherein, when a state-of-charge of the disconnected energy storage unit is greater than a higher threshold, the controller is used to control the switch units to connect the disconnected energy storage unit to the one operating power generation unit with a maximum of second indicators based on the second indicators of the operating power generation units, the second indicators having negative correlations with the states-of-charge and negative correlations with the distances.

6. The power generation system of claim 2, wherein, when a state-of-charge of the disconnected energy storage unit is greater than a higher threshold, the controller is used to control the switch units to connect the disconnected energy storage unit to the one operating power generation unit with a minimum of second indicators based on the second indicators of the operating power generation units, the second indicators having positive correlations with the states-of-charge and positive correlations with the distances.

7. The power generation system of claim 2, wherein, when a state-of-charge of the disconnected energy storage unit is between a higher threshold and a lower threshold, the controller is used to control the switch units to connect the disconnected energy storage unit to the one operating power generation unit with a maximum of first indicators and second indicators based on the first indicators and the second indicators of the operating power generation units, the first indicators having positive correlations with the states-of-charge and negative correlations with the distances, the second indicators having negative correlations with the states-of-charge and negative correlations with the distances.

8. The power generation system of claim 2, wherein, when a state-of-charge of the disconnected energy storage unit is between a higher threshold and a lower threshold, the controller is used to control the switch units to connect the disconnected energy storage unit to the one operating power generation unit with a minimum of first indicators and second indicators based on the first indicators and the second indicators of the operating power generation units, the first indicators having negative correlations with the states-of-charge and positive correlations with the distances, the second indicators having positive correlations with the states-of-charge and positive correlations with the distances.

9. The power generation system of claim 1, wherein the controller is used to further connect the disconnected energy storage unit to the one operating power generation unit based on remaining life cycles of the energy storage units.

10. The power generation system of claim 1, wherein the controller is used to split a total power among the plurality of energy storage units electrically connected to one of the power generation units based on the states-of-charge of the energy storage units.