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化工学报  2014 

自适应软测量方法在动液面预测中的研究与应用

DOI: 10.3969/j.issn.0438-1157.2014.12.034, PP. 4898-4904

Keywords: 主元分析,动态建模,优化,经验模态分解,动液面,最小二乘支持向量机

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Abstract:

针对传统人工检测方法在测量动液面时存在精度低、实时性差等问题,采用软测量技术来完成对动液面的测量工作.根据对现场数据特性的分析,提出采用经验模态分解和基于黑洞的最小二乘支持向量机预测相结合的算法来实现动液面软测量建模;通过构建模型性能评价模块,动态更新模型,解决在油田生产过程中,静态模型不能完全反映生产工况导致模型失效的问题,提高算法的自适应能力及预测量精度.最后通过对油田生产现场监测数据进行实验验证,结果表明,该方法对油田动液面测量精度高,对生产波动的自适应能力强,满足油田现场测试使用要求,提高油田生产自动化程度.

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