Yaw ultralimit IPC variable rate stop method for wind generating set

A wind turbine, variable rate technology, applied in wind turbines, wind turbine control, wind power generation, etc., can solve the problems of reducing unbalanced thrust overturning bending moment, reducing forward thrust, and excessive load, etc. Reduced ultimate load, reduced aerodynamic unbalance, cost saving effect
CN109737007AActive Publication Date: 2019-05-10GUANGDONG MINGYANG WIND POWER IND GRP CO LTD
11 Cites 10 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGDONG MINGYANG WIND POWER IND GRP CO LTD
Publication Date
2019-05-10

Smart Images

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

Abstract

The invention discloses a yaw ultralimit IPC variable rate stop method for a wind generating set. According to the yaw ultralimit IPC variable rate stop method for the wind generating set, a load shedding control module based on yaw ultralimit IPC variable rate feathering of a wind wheel azimuth angle is added on the basis of a conventional control strategy, specifically, when the wind generatingset enters into a stop logic, whether a fault type triggered by the wind generating set is a yaw ultralimit stop alarm or not is first distinguished, if not, corresponding stop logic action is adopted, and if so, the IPC variable rate stop is adopted; real-time measurement of a fan impeller azimuth angle through sensors is carried out; and variable pitch of blades of the wind generating set is carried out based on an IPC variable rate feathering logic of the azimuth angle, and pitch angles are increased gradually, when the pitch angles of three blades are increased to more than 60 degrees, CPCis adopted to carry out feathering until the pitch angles of the three blades reach the maximum pitch angles, feathering stop action is completed. The yaw ultralimit IPC variable rate stop method forthe wind generating set can reduce the overturning moment introduced by unbalanced thrust and effectively realize load optimization control over the wind generating set under special working conditions.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of wind power generation, in particular to an IPC variable-rate shutdown method for a wind power generator set when its yaw exceeds the limit. Background technique

[0002] It is known in the industry that with the development of wind power generation technology and market demand, the capacity of wind turbines is getting larger and longer, and the blades are getting longer and longer, and the wind turbines often operate in relatively harsh external environments, which causes the unit load to increase. If it gets bigger and bigger, it will pose a great safety hazard to the operation of the unit and bring a negative impact on the economic benefits of the owner.

[0003] When the wind speed increases sharply (increasing 15m / s within 10s) and the wind direction changes suddenly, the corresponding working condition is dlc1.4 (IEC-3rd), and the wind turbines bear a large load. To solve this problem, many solutions...

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