Condition monitoring method and device for wind turbine system

A technology of a wind power generation system and a state monitoring device, which is applied to the monitoring of wind turbines, wind energy power generation, wind turbines, etc.

Active Publication Date: 2016-05-18
CHINA AGRI UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

However, at present, there is no relevant analysis and research on the corresponding relationship between the voltage and current fluctuations on the DC bus side and the operating status of the wind power generation system, and there is no monitoring of the power of the wind power generation system by collecting the voltage and current parameters on the DC bus side. Calculation and Condition Monitoring Methods

Method used

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  • Condition monitoring method and device for wind turbine system
  • Condition monitoring method and device for wind turbine system
  • Condition monitoring method and device for wind turbine system

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Embodiment Construction

[0029] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0030] Generally, the front end of the DC bus is connected with a three-phase rectification and filter circuit (machine-side converter). In smaller power wind power generation systems, in order to save costs and facilitate control, three-phase uncontrolled rectification is usually used. figure 2 It is the voltage and current waveform of the three-phase uncontrolled rectification output of the wind power generation system. In a specific application, take the three-phase bridge uncontrolled rectifier as an example. With a fixed load, the voltage and current waveforms output by the three-phase uncontrolled rectifier are as follows: figure 2shown. The output vo...

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Abstract

The invention discloses a condition monitoring method and device for a wind turbine system. The method comprises the steps of obtaining a first voltage value of a direct current bus side of the wind turbine system at the start moment of the preset time period and a second voltage value of the direct current bus side of the wind turbine system at the finish moment of the preset time period; obtaining the voltage change ratio within the preset time period according to the first voltage value and the second voltage value after judging that the first voltage value and the second voltage value are within a range allowed by a grid side converter of the wind turbine system; judging the power supply and demand balance relationship of the wind turbine system according to the voltage change ratio so as to realize condition monitoring for the wind turbine system. The method further comprises a method for calculating the power of the wind turbine system. The condition monitoring method and device for the wind turbine system can provide valuable reference for control and scheduling of the wind turbine system.

Description

technical field [0001] The present invention relates to the field of wind power generation, in particular to a state monitoring method and device for a wind power generation system. Background technique [0002] Under normal circumstances, the working environment of wind power generation systems is harsh, and there are no conditions for using a large number of human resources for on-site duty. Therefore, it is necessary to adopt highly automated and intelligent monitoring systems and communication means to ensure the safe and stable operation of wind power generation systems. Specifically, it is necessary to transmit data to the control center in real time and perform intelligent control, so an intelligent monitoring system with high reliability is required. [0003] At present, most of the wind turbines produced by the mainstream manufacturers in the market have their own monitoring and control systems. However, these monitoring systems are generally incompatible with eac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D17/00
CPCY02E10/76
Inventor 翟庆志罗李吴洋陈龙肖雨田
Owner CHINA AGRI UNIV
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