Automatic generation control augmentation for wind plant integration

• US 7,941,246 B2
• Filed: 02/29/2008
• Issued: 05/10/2011
• Est. Priority Date: 02/29/2008
• Status: Active Grant

• Current Assignee: GE Infrastructure Technology, LLC (General Electric Company)
• Original Assignee: General Electric Company
• Inventors: Miller, Nicholas Wright, Clark, Kara
• Primary Examiner(s): Masinick; Michael D
• Application Number:
  US12/040,376
• Publication Number:
  US 20090218819A1
• Time in Patent Office: 1,166 Days
• Field of Search: 700/286, 700/291, 290/44, 290/55, 322/35
• US Class Current: 700/287
• CPC Class Codes: F03D 7/0284 in relation to the state of the electric grid
• CPC Class Codes: F03D 9/255 connected to electrical distribution networks; Arrangements therefor
• CPC Class Codes: H02J 2300/28 The renewable source being wind energy wind motors F03D
• CPC Class Codes: H02J 3/381 Dispersed generators
• CPC Class Codes: H02J 3/48 Controlling the sharing of the in-phase component
• 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

Abstract

An automatic generation control (AGC) augmentation system and method for wind power plant integration for controlling the power contribution to a grid by the wind plant is disclosed that provides for the calculation of the area control error (ACE) by actively communicating to the wind plant ramp rate limits and curtailment requests contributing to the ACE calculation. The augmented control of the ACE minimizes the amount of lost energy production by the wind plant.

Claims

1. A method for augmenting an automatic generation control of an energy management system grid, comprising:

establishing a bilateral communication between a grid energy management system and a wind plant control system of a wind plant;

communicating a ramp rate signal from an automatic generation control of the grid energy management system in response to an area control error augmentation calculation performed by the automatic generation control to a wind plant supervisory control system; and

communicating wind plant control active power functions from the wind plant control system to the energy management system;

wherein the wind plant control active power functions include undelivered wind power.

2. The method of claim 1, wherein the ramp rate signal is a curtailment request.

3. The method of claim 1, further comprising adjusting wind plant active power functions at the wind plant in response to the automatic generation control ramp rate signal.

4. The method of claim 2, further comprising adjusting wind plant active power functions at the wind plant in response to the automatic generation control curtailment requests.

5. A method for augmenting an automatic generation control of an energy management system of a grid, comprising:

establishing a unilateral communication between a grid energy management system and a wind plant control system of a wind plant;

communicating a ramp rate signal from an automatic generation control of the grid energy management system in response to an area control error augmentation calculation performed by the automatic generation control to a wind plant supervisory control system; and

communicating a request from the grid energy management system to the wind plant control system to curtail power as determined by a calculation of the area control error or the unit control error in the area generation control;

wherein the ramp rate signal comprises ramp rate limits.

6. The method of claim 5, wherein the ramp rate signal further comprises plant curtailment controls.