Fan hub center constant-current hot-wire wind speed sensing system and method

A technology of hot wire wind speed and sensing system, which is applied in the direction of wind turbine, wind turbine monitoring, engine, etc. It can solve the problems such as wake flow generated by blades, influence on the real-time flow field distribution above the nacelle, and real inflow deviation of measurement results, etc., to achieve The effect of measuring flow field interference is small, the installation method is simple, and the overall cost is low
CN112761903APending Publication Date: 2021-05-07HUANENG CLEAN ENERGY RES INST
0 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUANENG CLEAN ENERGY RES INST
Publication Date
2021-05-07

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a fan hub center constant-current hot-wire wind speed sensing system and method, and belongs to the technical field of wind power generation. A constant-current hot-wire probe is fixed on the front end surface of a fairing and is exposed out of the front end surface of the fairing; and the constant-current hot-wire probe is connected with a probe temperature sensor, the probe temperature sensor is connected with a temperature signal collector, the constant-current hot-wire probe and the temperature signal collector are respectively connected with current shunts, the current shunts are respectively connected with a constant-current power supply and a signal conversion controller, and the signal conversion controller is connected to an SCADA system. According to the fan hub center constant-current hot-wire wind speed sensing system and method, the design is reasonable, the total cost is low, and the installation method is simple; the advantages of small geometric dimension, small thermal inertia, high response frequency, continuous measurement, high spatial resolution, small interference on a measurement flow field and the like of a hot-wire anemograph are fully exerted, the wind speed can be accurately measured, and the interference of wind wheel rotation on wind speed measurement is effectively avoided; and meanwhile, measured data can be used for correcting and checking the traditional anemograph.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of wind power generation, and in particular relates to a wind speed sensing system and method for a constant-flow hot wire at the hub center of a fan. Background technique

[0002] At the current stage, the wind speed data of a single wind turbine mainly relies on the anemometer (such as a cup-type anemometer) installed above the nacelle, combined with the measurement of wind direction for yaw and pitch control. Accurate measurement of wind speed is the prerequisite for efficient and stable operation of wind turbines.

[0003] However, for wind turbines operating in the upwind direction, the wind measuring device installed above the nacelle is inevitably affected by the blades of the fan: the rotating blades will generate a wake, which affects the instantaneous flow field distribution above the nacelle, resulting in traditional measurement There will be deviations between the measurement results of the wind...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More