Fault identification method and device, computer-readable storage medium

A fault identification and fault technology, applied in circuit devices, emergency protection circuit devices, components of emergency protection devices, etc., can solve the problems of low identification accuracy and achieve high accuracy.

Active Publication Date: 2019-09-13
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] The fault identification strategy in the prior art is: the fault when the wind turbine enters the fault state from the normal operation state is regarded as a real fault for analyzing the cause of the fault of the wind turbine, resulting in low recognition accuracy

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  • Fault identification method and device, computer-readable storage medium
  • Fault identification method and device, computer-readable storage medium
  • Fault identification method and device, computer-readable storage medium

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Embodiment Construction

[0027] Features and exemplary embodiments of various aspects of the invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention.

[0028] The inventors of the present application found that after adopting the fault tolerance mechanism, the wind turbine may be diagnosed as a fault after multiple fault tolerance warnings, therefore, the cause of the wind turbine entering the fault state from the normal operation state is not necessarily the final fault state indicated failure. Therefore, embodiments of the present invention provide a fault identification method and device, and a computer-readable storage medium, which are used in the technical field of wind power generation. It considers the wind turbine as a whole, groups faults, and performs fault location based on grouped faults.

[0029] There are many types of faults involved in wind turbin...

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Abstract

The invention discloses a fault identification method and device, and a computer readable storage medium. The fault identification method comprises steps that faults of a wind turbine are grouped according to a target protection object, and each set of faults includes multiple process faults associated with the target protection object and a target fault of the target protection object; if the target fault reaches the corresponding target fault trigger condition, the process fault with the highest correlation in the same group as the target fault is selected from the triggered process faults as a true fault that causes the wind turbine to shut down. The fault identification method is advantaged in that the fault identification method can be applied to fault analysis of the wind turbine based on the fault-tolerant mechanism, and thereby accuracy of fault identification of the wind turbine is improved.

Description

technical field [0001] The present invention relates to the technical field of wind power generation, in particular to a fault identification method and device, and a computer-readable storage medium. Background technique [0002] The fault protection strategy commonly used by wind turbines is a single fault protection method, which compares the monitoring signal of the wind turbine with the protection boundary, and if the monitoring signal exceeds the protection boundary, it will notify the main controller of the wind turbine to perform shutdown protection operations . In order to enable the wind turbine to keep generating power without unnecessary shutdown, the fault-tolerant processing of the wind turbine is mainly carried out by expanding the protection boundary. After adding the fault-tolerant mechanism, the wind turbine may be shut down after multiple fault-tolerant warnings. Diagnosed as malfunctioning. [0003] The fault identification strategy in the prior art is ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/06H02H1/00
Inventor 陈勇
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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