On-line state monitoring and fault diagnosis method integrated into master control system for wind turbines

Abstract

The invention discloses an on-line state monitoring and fault diagnosis method integrated into a master control system for wind turbines. According to the data acquisition requirement of a state monitoring system, the master control system controls the wind turbines in a set operating state, and then acquires vibration data. Under a stable state, the vibration data acquisition method can help to decrease the difficulty of data processing and increase the accuracy of data analysis. Meanwhile, under the same operating state, the acquired data facilitate the horizontal comparison of analysis results of the different units and the vertical comparison of historical data of the same unit, and also contribute to the construction of an automatic diagnosis system database. Finally, the integration of the two systems can increase the compactness of a control cabinet and reduce cost.

Description

technical field [0001] The present invention relates to the technical field of source-network coordination, in particular to a method of integrating the data acquisition function required for online state monitoring in the main control system of wind turbines and integrating data analysis, processing and fault diagnosis in the wind farm remote monitoring SCADA system method of function. Background technique [0002] As the single-unit capacity of wind turbines increases and the installed capacity increases year by year, the related tertiary industry, namely wind turbine operation and maintenance, monitoring, and fault diagnosis, will become a new growth point for the industry. However, the working environment of wind turbines is harsh, and the wind speed is highly unstable. Under the action of alternating loads, the transmission system and other components of the unit are most likely to be damaged, and the wind turbines are installed in remote areas and are very high from th...

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Problems solved by technology

[0007] The patent application of "Wind Turbine Condition Monitoring and Fault Diagnosis System Coupled to Control System" (Chinese Patent Application No. 201220336371.3) proposes to transmit the main control signal to the CMS system for sharing through communication or hard wiring. In terms of an independent condition monitoring system, there are more interactions with the main control, but the invention does not propose how to use these interaction data to improve the efficiency of condition monitoring, and the interaction is only one-way data from the main control to the condition monitoring transfer, without mutual interaction between the two, and no data sharing

[0008] At present, large-scale commercial wind turbines have their own monitoring control and data acquisition (SCADA) system, which provides a strong technical platform and support for improving the stability and reliability of wind farm operation, but SCADA systems generally lack the support for transmission systems. Vibration monitoring and related analysis functions

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