US 10,612,519 B2Granted

Optimal wind farm operation

AssigneeABB Schweiz AG

InventorsCarsten Franke, Kedar Kulkarni, Adrian Timbus, Jan Poland, Silvia Mastellone, Yan Zhang

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Abstract

The present invention relates to a method of operating a wind farm comprising an upstream and a downstream turbine, wherein the upstream turbine is operated with current operation parameters under current wind conditions, wherein the method comprises the steps of: receiving future wind conditions for a time period for the wind farm, and evaluating required operation parameters for minimising wake effect of the downstream turbine under the future wind conditions, and determining a cost coefficient for changing the operation parameters to required operation parameters under consideration of fatigue effect of the wind turbine, calculating power productions P0 and Pc, in the predetermined time period, by the wind farm if operated with the current operation parameters under the current wind conditions and if operated with the required operation parameters under the future wind conditions, respectively, and operating the upstream turbine with the required operation parameters if the cost coefficient is lower than a cost that would be obtained by a power production increment Pc-P0.

Claims22

Dependent claims

A method of operating a wind farm with an upstream turbine and a downstream turbine, wherein the upstream turbine is operated with a current upstream operation parameter value under current wind conditions, the method comprising the steps of:

obtaining, for each time interval of a sequence of time intervals of a forecast time period, forecast wind conditions at the upstream wind turbine and at the downstream wind turbine,
determining a candidate upstream operation parameter sequence minimizing a wake effect at the downstream turbine under the forecast wind conditions,
estimating a parameter change expense indicative of a change from the current upstream operation parameter value to a first upstream operation parameter value of the candidate upstream operation parameter sequence,
estimating wind farm productivity P0 during the forecast time period if the upstream turbine is operated under the forecast wind conditions with the current upstream operation parameter value,
estimating wind farm productivity Pc during the forecast time period if the upstream turbine is operated under the forecast wind conditions according to the candidate upstream operation parameter sequence,
calculating a wind farm productivity gain as a difference (Pc−P0) between the wind farm productivity according to the candidate upstream operation parameter sequence and the wind farm productivity with the current upstream operation parameter value, and
operating the upstream turbine with the current upstream operation parameter value if the parameter change expense exceeds the productivity gain.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/631,783Filed 23 Jun 2017 · continuation
Priority: EP 1420010623 Dec 2014
Published: US 2017/0284368 A15 Oct 2017
Granted: 7 Apr 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

F03D 7/0292
Controlling wind motor output power: to reduce fatigue
F03D 7/0204
The wind motors having rotation axis substantially parallel to the air flow entering the rotor: for orientation in relation to wind direction
F03D 7/048
By means of an electrical or electronic controller: controlling wind farms
F03D 7/02
Controlling wind motors: the wind motors having rotation axis substantially parallel to the air flow entering the rotor