基于改进小波包的钻完井液压系统主油泵运行故障诊断方法

Operation Fault Diagnosis Method of Drilling and Completion Hydraulic System Based on Improved Wavelet Packet

钻完井液压系统主油泵运行数据中包含异常值,导致F_(1)值较小,因此设计一种基于改进小波包的钻完井液压系统主油泵运行故障诊断方法。采集主油泵的运行数据,进行数据清洗去除异常值,这些数据涵盖主油泵在各种工作状态下的实时表现。基于改进小波包的方法,提取出液压系统主油泵运行故障的特征信息,利用这些特征信息构建主油泵运行故障诊断模型,能够准确识别各种故障类型。通过模型的运算分析,可实现对钻完井液压系统主油泵运行故障的分类诊断,为钻井作业的安全和效率提供有力保障。实验结果表明,基于改进小波包的钻完井液压系统主油泵运行故障诊断方法,在各种运行状态下均获得了最高的F_(1)值,远大于两种对比方法,其中F_(1)最高值可达到0.95,表明设计方法在实际应用中具有更高的准确性和可靠性。

Because the operation data of the main oil pump of the drilling and completed hydraulic system contains outlier value,the F_(1) value is small,so a fault diagnosis method for the operation of the main oil pump of the drilling and completed hydraulic system based on improved wavelet packet is designed.The operation data of the main oil pump is collected and cleaned to remove outliers.These data cover the real-time performance of the main oil pump in various working conditions.Based on the method of improving the wavelet packet,the characteristic information of the main oil pump operation fault of the hydraulic system is extracted.This characteristic information is used to construct a fault diagnosis model of the main oil pump operation,which can accurately identify various fault types.Through the operation and analysis of the model,the classification and diagnosis of the main oil pump operation fault of the drilling and completion hydraulic system is realized,which provides a strong guarantee for the safety and efficiency of the drlling operation.The experimental results show that based on the improved fault diagnosis method of the wavelet package,the highest F_(1) value is obtained from all kinds of operating conditions,which is much higher than the two comparison methods,and the highest F_(1) value can reach 0.95,which indicates that the design method has higher accuracy and reliability in practical application.