Fan running operating condition monitoring method based on temperature characteristic

Abstract

The invention relates to a fan running operating condition monitoring method based on a temperature characteristic, which relates to the technical field of the wind power generation, and solves the technical problem that the operating condition of a fan is tracked according to the working temperature characteristic. The method comprises the following steps of (1) acquiring the working temperature of a key part of each fan, calculating a key characteristic temperature value of each fan according to the detection value; (2) calculating a weighted value of each fan according to the key characteristic temperature value of each fan; (3) calculating a weighted average value of the fan according to the key characteristic temperature value and the weighted value of each fan; (4) calculating an upper limit value and a lower limit value of the characteristic temperature according to the weighted average value of the fan; (5) comparing the key characteristic temperature value of each fan with the upper and the lower limit values of the characteristic temperature of the fan; and transmitting systematic alarm information when the key characteristic temperature value of any fan is higher than the characteristic temperature upper limit value of the fan or lower than the characteristic temperature lower limit value of the fan. The method can reflect the real operating condition of the fan in real time.

Description

Technical field [0001] The present invention relates to wind power generation technology, in particular to a technology of a method for monitoring the operating conditions of a wind turbine based on temperature characteristics. Background technique [0002] When a wind farm (wind power farm) is operating, it is necessary to monitor the working condition data of the wind turbine (wind turbine) in the wind farm in real time. [0003] The working temperature of key components such as the gearbox, blade slurry, and main shaft bearing of the fan is the key monitoring data in the monitoring of the fan's working condition. When the fan working condition is not normal, the working temperature of these key components in the fan will often rise. By monitoring the working temperature of these key components in the fan, the operator can be reminded that there may be safety before the other electrical monitoring quantities are alarmed. Hidden dangers. [0004] However, using the operating tempe...

AI Technical Summary

Problems solved by technology

When the working condition of the fan is not normal, the working temperature of these key components in the fan tends to rise. By monitoring the working temperature of these key components in the fan, it is possible to remind the operator that there may be a safety hazard before other electrical monitoring quantities alarm. Hidden danger

[0004] However, using the operating temperature characteristics of the key components of the fan to monitor the working condition of the fan has the following difficulties: due to the large changes in the ambient temperature of the fan, the ambient temperature varies from 30 to 40 degrees Celsius throughout the year. Therefore, the working temperature alarm value of the key components of the fan cannot be set very accurately

Especially in the colder winter, the temperature alarm value often cannot reflect the actual fault situation. Due to the low external temperature, it is possible that the temperature value has not been alarmed before the fault has occurred, which loses the meaning of early warning.

Therefore, the working temperature data of the key components of the wind turbine cannot reflect the real working conditions of the wind turbine in real time under certain weather conditions (such as winter), and can only be used for auxiliary reference at present.

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