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基于ARIMA的腐蚀时序数据趋势预测
Corrosion time series data trend prediction based on ARIMA
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- DOI:
- 作者:
- 陆新元
Lu Xinyuan
- 作者单位:
- 中国特种设备检测研究院，北京 100029
China Special Equipment Inspection & Research Institute，Beijing 100029，China
- 关键词:
- 炼化装置；腐蚀在线监测；ARIMA；腐蚀预测预警
refining and chemical plant；corrosion on-line monitoring；ARIMA；corrosion prediction and warning
- 摘要:
- 摘要：腐蚀造成的事故严重影响炼化企业生产安全与经济效益。为防止事故发生，企业通常会采取监测技术对设备运行过程的各项参数进行获取与评估。文中基于在线监测探针采集的腐蚀速率数据，建立ARIMA模型，开展腐蚀时序数据趋势预测。首先对腐蚀速率数据进行预处理并判断其稳定性，接着确定 ARIMA 模型的建模参数，最后采用 ARIMA（2，1，5）和ARIMA（1，1，1）2 种参数实现了腐蚀速率趋势的快速预测和提前 10 d 报警，且平均误差为1.4%，为炼化企业优化腐蚀防控提供1种新方法。Abstract: Accidents caused by corrosion seriously affect the production safety and economic benefits of refining and chemical enter⁃prises. In order to prevent accidents, enterprises usually adopt monitoring technology to obtain and evaluate the parameters ofequipment operation process. Based on the corrosion rate data collected by the on-line monitoring probe, ARIMA model wasestablished to predict the trend of corrosion time series data. Firstly, the corrosion rate data was preprocessed and its stability wasdetermined, and then the modeling parameters of the ARIMA model were determined. Finally, ARIMA (2,1,5) and ARIMA (1,1,1)were used to quickly predict the corrosion rate trend and alarm 10 d in advance, with an average error of 1.4%, which provided anew method for optimizing corrosion prevention and control in refining and chemical enterprises.