A method and system for improving the headroom of wind turbines under strong wind deviation
A technology for wind turbines and deviations, which is applied in the control of wind turbines, wind turbines, and wind power generation. It can solve problems such as small headroom of the wind turbine, blades hitting the tower, and the impact on the safe operation of the wind turbine. The effect is obvious and the implementation method is convenient. Effect
Active Publication Date: 2019-08-23
锐电科技有限公司
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Problems solved by technology
Existing unit designs seldom focus on headroom and load reduction, and refine the design of unit control schemes, resulting in certain safety hazards in the operation of on-site units, and at the same time, the operating load of the units is relatively large;
[0003] With the demand of market development, the design impeller diameter of wind power generating set is gradually increasing. Therefore, the influence of wind shear on the balance of the impeller of the unit should not be underestimated. The most direct safety hazard brought by wind shear is the blade hitting the tower, and the clearance of the unit is small. The safe operation of the unit has a great impact
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[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0028] The present invention mainly focuses on the control of pitch and speed units that are common on the market at present, and takes the pitch and torque control process of the unit based on PID adjustment as the core to illustrate the influence of specific wind conditions on the control of the unit. By analyzing the basic scheme of the present invention in detail, Establish the operating characteristics of the unit under this working condition and the impro...
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The invention discloses a method for improving clearance of a wind power generator set under large wind deviation. The method comprises the following steps that firstly, the yaw error of the wind power generator set is collected, and subjected to filtering by selecting the proper filtering time; secondly, whether the time difference between the yaw error and the set error value exceeds the preset duration time or not is judged, and accordingly whether the wind power generator set is in a special work condition or not is determined; and thirdly, if the wind power generator set is in the special work condition, running parameters of the wind power generator set are adjusted, wherein the running parameters include the unit minimal pitch angle and the unit rated rotation speed. Correspondingly, the invention further discloses a system for improving clearance of the wind power generator set under large wind deviation.
Description
technical field [0001] The invention relates to the technical field of wind power generation, in particular to a method and system for improving the headroom of a wind power generating set under strong wind deviation. Background technique [0002] Existing wind turbines are often driven by interests to pursue maximum power generation within the design load range. Judging from the operation of the units on the market in the past two years, due to special working conditions (extreme turbulence, gusts, etc.), the phenomenon of “speeding” or tower collapse of the unit has occurred from time to time. Therefore, it is necessary to design and optimize the parameters of the unit under special working conditions. Existing unit designs seldom focus on headroom and load reduction, and refine the design of unit control schemes, resulting in certain safety hazards in the operation of on-site units, and at the same time, the operating load of the units is relatively large; [0003] With...
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IPC IPC(8): F03D7/02F03D7/04
CPCF03D7/02F03D7/0204F03D7/0224F03D7/0276F03D7/044F05B2270/321F05B2270/33Y02E10/72
Inventor 田元兴何荣光吴俊辉张超
Owner 锐电科技有限公司