Wind power generation unit freezing detection control method based on inverse time control
A wind turbine, detection and control technology, applied in the control of wind turbines, monitoring of wind turbines, wind turbines, etc., can solve the problems of lack of determination of icing conditions for blades, operation of wind turbines, etc.
Active Publication Date: 2018-02-23
BEIJING SANLI XINNENG SCI & TECH
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Problems solved by technology
However, this method is aimed at the fact that the speed of the unit cannot increase when the icing is serious, but it cannot perform a relatively safe operation of the unit when the wind speed is high; In the case of slight icing, there is no further determination of icing conditions
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[0039] attached figure 1 A system block diagram of a wind turbine blade icing detection and control method based on inverse time-limit control provided by the present invention, the specific implementation is as follows:
[0040] attached figure 1 The entire flow chart of the icing detection and control method of the unit is given, a wind turbine blade icing detection and control method based on inverse time limit control, which is characterized in that it includes:
[0041] The icing detection and control system mainly includes: an environmental monitoring system, a temperature sensor 1, a wind speed and direction sensing system, a speed measurement system, an icing determination module 2 and a control execution module 3. In the environmental monitoring system, the temperature sensor 1 monitors the location of the cabin. Ambient temperature data; the wind speed and direction sensing system monitors changes in wind speed and wind direction data and monitors the sensor's own f...
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The invention belongs to the technical field of wind power generators and particularly relates to a wind power generation unit freezing detection control method based on inverse time control. According to the wind power generation unit freezing detection control method based on inverse time control, freezing judgment of the unit is executed through a freezing judgment module according to environment parameter monitoring, relevant sensor data collecting and unit running parameter setting, and the corresponding freezing grade is given; and corresponding pitch angle running control or unit safe shutdown operation is executed by analyzing the freezing grade. The wind power generation unit freezing detection control method has the beneficial effects that the freezing condition of draught fan blades can be accurately detected, detection is accurate, reliability is high, and cost is low; and in addition, freezing running and safe shutdown operation of the unit under the basic whole-air-speedsection can be controlled, and the utilization rate and safety of the unit are improved.
Description
technical field [0001] The invention belongs to the technical field of wind power generators, and in particular relates to an icing detection and control method for wind power generators based on inverse time limit control. Background technique [0002] With the expansion of the wind power market, wind turbines are gradually developing towards low wind speed areas or ultra-low wind speed areas. However, areas with better wind resources are generally located at relatively high altitudes, coupled with high humidity in winter, and blades are prone to freezing when the temperature is low. The icing of the blades will easily lead to changes in the geometry of the airfoil, the performance of the blades will be reduced, and the lift of the impeller will be reduced. As the thickness of the ice coating increases and the surface area of the ice coating varies, it is easy to cause the weight of the impeller to be unbalanced, resulting in excessive fatigue load during operation of th...
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Login to View More IPC IPC(8): F03D80/40F03D7/00F03D17/00
CPCF03D7/00F03D17/00F03D80/40F05B2270/328Y02E10/72
Inventor 王志奎吴安彭云张艺良
Owner BEIJING SANLI XINNENG SCI & TECH