EP1508951A1
Expired / Lapsed
EP
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Continuous reactive power support for wind turbine generators
Assignee: General Electric Co
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Filing: 2004-08-13
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Granted: —
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Expires: 2024-08-13
Abstract
Abstract Real and reactive power control for wind turbine generator systems. The technique described herein provides the potential to utilize the total capacity of a wind turbine generator system to provide dynamic VAR (reactive power support). The VAR support provided by individual wind turbine generators in a system can be dynamically varied to suit application parameters.
Inventors
- 👤 Thomas A. Wilkins
- 👤 Reigh A. Walling
- 👤 Robert W. Delmerico
- 👤 Nicholas Wright Miller
- 👤 Nagwa M. Elkachouty
- 👤 James P. Lyons
- 👤 Sumit Bose
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 02:17
CPC Classifications
H; H02; H02P; H02P9/00; H02P9/007; F; F03; F03D; F03D7/00; F03D7/02; F03D7/0272; F03D9/00; F03D9/20; F03D9/25; F03D9/255; F03D9/257; H02J; H02J3/00; H02J3/12; H02J3/16; H02J3/18; H02J3/1821; H02J3/1835; H02J3/1842; H02J3/38; H02J3/381; F05; F05B; F05B2260/00; F05B2260/96; F05B2270/00; F05B2270/30; F05B2270/337; H02J2101/00; H02J2101/20; H02J2101/28; H02P2101/00; H02P2101/15; Y; Y02; Y02E; Y02E10/00; Y02E10/70; Y02E10/72; Y02E10/76; Y02E40/00; Y02E40/20; Y02E40/30
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
111 words
A network of variable speed wind turbine generator systems
comprising: a plurality of generators to generate real power and reactive power,
wherein one or more of the generators includes a variable frequency
converter excitation system to control real power and reactive power flow, and
further wherein the variable frequency converter excitation systems are
capable of contributing reactive power independently of the generators; and a system controller coupled with the plurality of generators to control
real and reactive power generated by individual generators in the plurality of
generators based on thermal capability and/or voltage limits of the individual
generators to cause the plurality of generators to provide commanded real
and reactive power.
Claim 2
Dependent Claim
40 words
The network of variable speed wind turbine generator systems of claim
1 further comprising switched power management components coupled with
the plurality of generators and the system controller, wherein the switched
power management components are controlled by the system controller.
Claim 3
Dependent Claim
29 words
The network of variable speed wind turbine generator systems of claim
1 wherein real and reactive power commands are received by the system
controller from a utility grid operator.
Claim 4
Dependent Claim
27 words
The network of variable speed wind turbine generator systems of claim
2 wherein the reactive power command is coordinated with adjustments to the
switched power management components.
Claim 5
Dependent Claim
34 words
The network of variable speed wind turbine generator systems of claim
2 wherein the system controller causes each of the individual generators in
the plurality of generators to generate substantially the same reactive power.
Claim 6
Independent Claim
118 words
A method comprising: determining power to be provided to a predetermined location; providing commands to individual wind turbine generators in a multi-turbine
system, wherein one or more of the generators includes a variable
frequency converter excitation system to control real power and reactive
power flow, and further wherein the variable frequency converter excitation
systems are capable of contributing reactive power independently of the
generators, the commands to control real and reactive power generated by
individual generators in the plurality of generators based on thermal capability
and/or voltage limits of the individual generators to cause the plurality of
generators to provide commanded real and reactive power; and providing power from the wind turbine generators in response to the
commands.
Claim 7
Dependent Claim
33 words
The method of claim 6 wherein the commands to the individual wind
turbine generators further comprise a real and/or reactive power modulation
signal to adjust network power based on a utility reference command.
Claim 8
Dependent Claim
22 words
The method of claim 6 further comprising controlling switched power
management components coupled with the plurality of generators and the
system controller.
Claim 9
Dependent Claim
18 words
The method of claim 6 wherein the individual generators operate as
static VAR regulators under any wind condition.
Claim 10
Dependent Claim
56 words
The method of claim 6 wherein commands to the individual wind
turbine generators include a reactive power component in the form: where Q 0 is a nominal VAR operating point that is provided to all wind turbine
generators in a system and is a reactive power/real power incremental slope multiplied by wind turbine
generator power (P).
References Cited (Backward Citations)
US5225712A
Cited
EP1246335A2
Cited
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