US 12,506,344 B2 · Method for operating a wind farm and a wind farm

Abstract

A method for operating a wind farm having a string (S1-S3) of wind turbines (100-100d) which are electrically connectable with each other and a grid (510, 550) via power connections (Cab-Cd) is disclosed. Each wind turbine includes a rotor (106) with rotor blades (108), and a power conversion system (118, 210, 238) mechanically connected with the rotor (106). The method includes disconnecting the string (S1-S3) from the grid (510, 550), and identifying a primary wind turbine (100a, 100c) of the disconnected string (S1-S3) which is electrically connectable with at least one secondary wind turbine (100b-10d) of the disconnected string (S1-S3). The power conversion system (118, 210, 238) of the primary wind turbine (100a, 100c) includes a reactive power capability (RPC) that at least matches a reactive power (RP) of a cluster (C1, C11, C12) to be formed by electrically connecting the primary wind turbine (100a, 100c) with the at least one secondary wind turbine (100b-100d) of the disconnected string (S1-S3).

Claims12

Dependent claims

A method for operating a wind farm that includes a string of wind turbines electrically connectable with each other and connectable with a grid via power connections, each of the wind turbines having a rotor with rotor blades, and a power conversion system mechanically connected with the rotor, the method comprising:

disconnecting the string from the grid;
and
identifying at least two primary wind turbines of the disconnected string for separate respective clusters, each of the at least two primary wind turbines electrically connectable with at least one respective secondary wind turbine of the disconnected string;
wherein the power conversion system of each of the at least two primary wind turbines has a reactive power capability (RPC) that at least matches a reactive power (RP) of the respective cluster that is formed by electrically connecting each of the at least two primary wind turbines with the at least one respective secondary wind turbine in the respective cluster of the disconnected string, wherein the formed clusters are disconnected from each other, and wherein the at least two primary wind turbines are operated in an island operating mode so that the reactive power (RP) of the respective cluster is met by the power conversion system of the respective primary wind turbine.

1 more element

A wind farm, comprising:

a string of wind turbines that are electrically connectable with each other and a grid, each of the wind turbines comprising a rotor with rotor blades, and a power conversion system mechanically connected with the rotor;
a control system communicatively coupled with the power conversion system of each of the wind turbines, the control system configured to perform the following;
disconnecting the string from the grid;
and
identify at least two primary wind turbines of the disconnected string for separate respective clusters, each of the at least two primary wind turbines electrically connectable with at least one respective secondary wind turbine of the disconnected string;
wherein the power conversion system of each of the at least two primary wind turbines has a reactive power capability (RPC) that at least matches a reactive power (RP) of the respective cluster that is formed by electrically connecting each of the at least two primary wind turbines with at least one respective secondary wind turbine in the respective cluster of the disconnected string, wherein the formed clusters are disconnected from each other, and wherein the at least two primary wind turbines are operated in an island operating mode so that the reactive power (RP) of the respective cluster is met by the power conversion system of the respective primary wind turbine.

3 more elements

Dependencies are inferred from the claim text.

Method for operating a wind farm and a wind farm

Life of this patent

Method for operating a wind farm and a wind farm

Life of this patent

Abstract

Claims12