# US 2021/0340955 A1 · Method and system for controlling wind turbine based on sectors > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0340955 A1 - Document ID: US20210340955A1 - Status: Published application - Kind: A1 - Application number: 16/337,175 - Filed: 2018-07-10 - Published: 2021-11-04 - Earliest claimed: 2018-01-31 - Assignees: Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. - Applicants: Beijing Goldwind Science & Creation Windpower Equipment Co., Ltd. - Inventors: Pengfei ZHANG; Cheng FANG; Guilin ZHOU; Minghui WANG - Web page: https://patentgrep.com/patent/US20210340955A1 ## CPC - F03D 7/0292: {to reduce fatigue} - F03D 7/046: {with learning or adaptive control, e.g. self-tuning, fuzzy logic or neural network} - F03D 7/048: {controlling wind farms} - F05B 2270/1033: Power (if explicitly mentioned) - F05B 2270/1095: by limiting mechanical stresses - F05B 2270/204: taking into account the wake effect - F05B 2270/32: Wind speeds - F05B 2270/321: Wind directions - F05B 2270/331: Mechanical loads - F05B 2270/332: Maximum loads or fatigue criteria - F05B 2270/335: Output power or torque - Y02E 10/72: Wind turbines with rotation axis in wind direction - F03D: WIND MOTORS - F05B: INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A method and a system for controlling a wind turbine based on sectors. Original sectors of the wind turbine are reconstructed based on a wind resource parameter and a wake-flow effect. A load is calculated and superposed for a new sector obtained from the sector reconstruction. An optimization algorithm is applied, under a condition that a constraint condition of a fatigue load is met, to find an operation parameter for maximum power generation amount of the wind turbine. ## Claims ### Claim 1 A method for controlling a wind turbine based on sectors, comprising: acquiring, for each of a plurality of wind speed ranges, a wind resource parameter of each of original sectors of the wind turbine; reconstructing the original sectors, based on the acquired wind resource parameter; performing an optimization based on sectors acquired after reconstructing, wherein the optimization is for a power generation amount of the wind turbine being maximum; and controlling the wind turbine based on a result of the optimization. ### Claim 2 (depends on 1) The method according to claim 1, wherein reconstructing the original sectors based on the acquired wind resource parameter comprises: dividing, with an interval of a predetermined degree, each of the original sectors to form a plurality of first sectors; acquiring a wind resource parameter of each of the plurality of first sectors, based on the wind resource parameter of each of the original sectors of the wind turbine; calculating a comprehensive turbulent intensity of each of the plurality of first sectors, respectively for each of the plurality of wind speed ranges, based on the wind resource parameter of each of the plurality of first sectors and a wake-flow effect of the wind turbine; and performing sector reconstruction to form a plurality of second sectors, and acquiring a wind resource parameter of each of the plurality of second sectors and a comprehensive turbulent intensity of each of the plurality of second sectors, based on the comprehensive turbulent intensity of each of the plurality of first sectors, wherein the plurality of second sectors serves as the sectors acquired after reconstructing. ### Claim 3 (depends on 2) The method according to claim 2, wherein performing the optimization based on the sectors acquired after reconstructing, wherein the optimization is for the power generation amount of the wind turbine being maximum, comprises: calculating a load of each of large components of the wind turbine, respectively for each of the plurality of wind speed ranges, based on an operation parameter of the wind turbine, the wind resource parameter of each of the plurality of second sectors, the comprehensive turbulent intensity of each of the plurality of second sectors, and an air density; superposing the load of each of the large components of the wind turbine, calculated for each of plurality of wind speed ranges, to acquire a fatigue load of each of the large components; and adjusting the operation parameter of the wind turbine and recalculating the comprehensive turbulent intensity of each of the plurality of first sectors, under a constraint condition being the fatigue load of each of the large components, and an objective function being that the power generation amount of the wind turbine is maximum. ### Claim 4 (depends on 1) The method according to claim 1, wherein the wind resource parameter comprises a wind shear index, an inflow angle, an environment turbulent intensity of each of the plurality of wind speed ranges, a wind speed, and a parameter of probability density distribution of wind speed. ### Claim 5 (depends on 2) The method according to claim 2, wherein calculating the comprehensive turbulent intensity of each of the plurality of first sectors, respectively for each of the plurality of wind speed ranges, based on the wind resource parameter of each of the plurality of first sectors and the wake-flow effect of the wind turbine, comprises: calculating, based on the wake-flow effect of the wind turbine, an additional turbulent intensity of the wind turbine; and calculating a comprehensive turbulent intensity of each of the plurality of first sectors, respectively for each of the plurality of wind speed ranges, based on the additional turbulent intensity and an environment turbulent intensity of each of the plurality of wind speed ranges. ### Claim 6 (depends on 2) The method according to claim 2, wherein performing sector reconstruction to form the plurality of second sectors, based on the comprehensive turbulent intensity of each of plurality of first sectors, comprises: merging ones of the plurality of first sectors, to form the plurality of second sectors, wherein the comprehensive turbulent intensities of the ones of the plurality of first sectors are approximate to each other, and the ones of the plurality of first sectors are adjacent in location; wherein an angle covered by each of the plurality of second sectors is larger than or equal to a predetermined threshold angle. ### Claim 7 (depends on 3) The method according to claim 3, wherein adjusting the operation parameter of the wind turbine and recalculating the comprehensive turbulent intensity of each of the plurality of first sectors comprises: adjusting the operation parameter of the wind turbine and recalculating the comprehensive turbulent intensity of each of the plurality of first sectors, in a case that the fatigue load of at least one of the large components of the wind turbine is larger than a predetermined threshold. ### Claim 8 (depends on 3) The control method according to claim 3, further comprising: calculating, in a case that the fatigue load of each of the large components of the wind turbine is less than a predetermined threshold, the power generation amount of the wind turbine; wherein adjusting the operation parameter of the wind turbine and recalculating the comprehensive turbulent intensity of each of the plurality of the first sector comprises: adjusting the operation parameter of the wind turbine and recalculating the comprehensive turbulent intensity of each of the plurality of first sectors, in a case that the power generation amount of the wind turbine is not maximum. ### Claim 9 A system for controlling a wind turbine based on sectors, comprising: a parameter acquisition module, configured to acquire, for each of a plurality of wind speed ranges, a wind resource parameter of each of original sectors of the wind turbine; a sector reconstruction module, configured to reconstruct the original sectors based on the acquired wind resource parameter; an optimization module, configured to perform an optimization based on sectors acquired after reconstructing, wherein the optimization is for a power generation amount of the wind turbine being maximum; and a control module, configured to control the wind turbine based on a result of the optimization. ### Claim 10 (depends on 9) The system according to claim 9, wherein the sector reconstruction module is further configured to: divide, with an interval of a predetermined degree, each of the original sectors to form a plurality of first sectors; acquire a wind resource parameter of each of the plurality of first sectors, based on the wind resource parameter of each of the original sectors of the wind turbine; calculate a comprehensive turbulent intensity of each of the plurality of first sectors, respectively for each of the plurality of wind speed ranges, based on the wind resource parameter of each of the plurality of first sectors and a wake-flow effect of the wind turbine; and perform sector reconstruction to form a plurality of second sectors, and acquire a wind resource parameter of each of the plurality of second sectors and a comprehensive turbulent intensity of each of the plurality of second sectors, based on the comprehensive turbulent intensity of each of the plurality of first sectors, wherein the plurality of second sectors serves as the sectors acquired after reconstructing. ### Claim 11 (depends on 10) The system according to claim 10, wherein the optimization module comprises: a load calculation module, configured to calculate a load of each of large components of the wind turbine, respectively for each of the plurality of wind speed ranges, based on an operation parameter of the wind turbine, the wind resource parameter of each of the plurality of second sectors, the comprehensive turbulent intensity of each of the plurality of second sectors, and an air density; a fatigue load superposition module, configured to superpose the load of each of the large components of the wind turbine, calculated for each of plurality of the wind speed ranges, to acquire a fatigue load of each of the large components; and a parameter adjustment module, configured to adjust the operation parameter of the wind turbine and provide the adjusted operation parameter of the wind turbine to the sector reconstruction module, under a constraint condition being the fatigue load of each of the large components, and an objective function being that the power generation amount of the wind turbine is maximum. ### Claim 12 (depends on 9) The system according to claim 9, wherein the wind resource parameter comprises a wind shear index, an inflow angle, an environment turbulent intensity of each of the plurality of wind speed ranges, a wind speed, and a parameter of probability density distribution of wind speed. ### Claim 13 (depends on 10) The system according to claim 10, wherein the sector reconstruction module is further configured to: calculate, based on the wake-flow effect of the wind turbine, an additional turbulent intensity of the wind turbine; and calculate a comprehensive turbulent intensity of each of the plurality of first sectors, respectively for each of the plurality of wind speed ranges, based on the additional turbulent intensity and an environment turbulent intensity of each of the plurality of wind speed ranges. ### Claim 14 (depends on 10) The system according to claim 10, wherein the sector reconstruction module is further configured to: merge ones of the first sectors, to form a plurality of second sectors, wherein the comprehensive turbulent intensities of the ones of the plurality of first sectors are approximate to each other, and the ones of the plurality of first sectors are adjacent in location; wherein an angle covered by each of the plurality of second sectors is larger than or equal to a predetermined threshold angle. ### Claim 15 (depends on 11) The system according to claim 11, wherein the parameter adjustment module is further configured to: adjust the operation parameter of the wind turbine and provide the adjusted operation parameter of the wind turbine to the sector reconstruction module, in a case that the fatigue load of at least one of the large components of the wind turbine is larger than a predetermined threshold. ### Claim 16 (depends on 11) The control system according to claim 11, the parameter adjustment module is further configured to: calculate, in a case that the fatigue load of each of the large components of the wind turbine is less than a predetermined threshold, the power generation amount of the wind turbine; and adjust the operation parameter of the wind turbine and provide the adjusted operation parameter of the wind turbine to the sector reconstruction module, in a case that the power generation amount of the wind turbine is not maximum. ### Claim 17 (depends on 1) A computer readable storage medium, storing program instructions, wherein the program instructions when executed by a processor configure the processer to execute the method for controlling the wind turbine according to claim 1. ### Claim 18 (depends on 1) A computing device, comprising: a processor; and a memory storing program instructions, wherein the program instructions when executed by a processor configure the processer to execute the method for controlling the wind turbine according to claim 1.