Method and device for monitoring and diagnosing generating efficiency of wind turbine generator in real-time manner

Abstract

The invention relates to a method and a device for monitoring and diagnosing the generating efficiency of a wind turbine generator in a real-time manner. The method comprises following steps: obtaining historical data information and power information of two groups of air blowers respectively; fitting power curves of two groups of air blowers respectively as per the historical data information and power information of two groups of air blowers; calculating wind speed distribution parameters of two groups of air blowers as per the historical data information and power information of two groups of air blowers; calculating generating capacity data of two groups of air blowers as per the power curves and wind speed distribution parameters of two groups of air blowers; processing the generating capacity data of two groups of air blowers to obtain result data, estimating the generating efficiency of air blowers as per a relation between the result data and a preset value, and optimizing the control systems of the air blowers as per the estimation result. The invention can perform real time monitoring to the generating efficiency of the wind turbine generator and estimates the generating efficiency as per monitoring data, adjusts the control optimizing scheme of the wind turbine generator as per the estimation result, and is favorable for improvement of the generating efficiency of the wind turbine generator.

Description

technical field [0001] The invention relates to a monitoring method for a wind turbine, in particular to a real-time monitoring and diagnosis method and device for generating efficiency of a wind turbine. Background technique [0002] Wind power generation is one of the world-recognized renewable energy technologies with a high degree of commercialization. Under the background of today's emphasis on environmental protection and scientifically sustainable development, wind power generation is considered to be a clean form of energy utilization. Over the past 10 years, wind power has become the fastest growing renewable energy source in the world, thanks to an average annual growth rate of nearly 28%. [0003] With the rapid development of wind power generation, the problems exposed in the operation of wind turbines have become more and more prominent, especially the failure of key mechanical components has led to abnormal shutdown of the unit for maintenance, which seriously...

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The disadvantage of troubleshooting is that it cannot play a role in sudden failures during the two ma

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