陈利琼, 高茂萍, 田龙, 李姝璇. 离心式天然气压缩机自适应性能曲线生成方法[J]. 油气储运, 2023, 42(4): 430-437. DOI: 10.6047/j.issn.1000-8241.2023.04.008
引用本文: 陈利琼, 高茂萍, 田龙, 李姝璇. 离心式天然气压缩机自适应性能曲线生成方法[J]. 油气储运, 2023, 42(4): 430-437. DOI: 10.6047/j.issn.1000-8241.2023.04.008
CHEN Liqiong, GAO Maoping, TIAN Long, LI Shuxuan. The method to generate self-adaptive performance curve for centrifugal natural gas compressors[J]. Oil & Gas Storage and Transportation, 2023, 42(4): 430-437. DOI: 10.6047/j.issn.1000-8241.2023.04.008
Citation: CHEN Liqiong, GAO Maoping, TIAN Long, LI Shuxuan. The method to generate self-adaptive performance curve for centrifugal natural gas compressors[J]. Oil & Gas Storage and Transportation, 2023, 42(4): 430-437. DOI: 10.6047/j.issn.1000-8241.2023.04.008

离心式天然气压缩机自适应性能曲线生成方法

The method to generate self-adaptive performance curve for centrifugal natural gas compressors

  • 摘要: 压缩机作为天然气输送管道的动力设备,其运行方案直接影响管道的整体调控与运营效率。离心式压缩机性能曲线是制定运行方案的主要依据,但由于管道运行工况与压缩机性能状态变化的影响,曲线具有时变性。通过对比最小二乘法、BP神经网络及自适应神经模糊推理系统(Adaptive Neuro-Fuzzy Inference System,ANFIS)算法生成性能曲线的准确度,提出了一种基于ANFIS的自适应性能曲线生成方法,通过不定期输入压缩机的实时运行数据修正性能曲线ANFIS映射网络,获得不同时期的实时性能曲线。采用所提出的方法生成某压缩机2018年的实时性能曲线,对方法的有效性和准确性进行了验证,结果表明:基于ANFIS的自适应性能曲线生成方法得到的压缩机运行曲线与实际运行曲线相对误差小于3%,满足现场工程精度要求。研究成果可为离心式压缩机性能分析、能耗评价及运行方案制定提供理论基础。

     

    Abstract: Compressors are the power equipment for transporting natural gas through pipelines, and their operation scheme directly affects the overall regulation and operation efficiency of pipelines. The performance curve of compressors is the main basis for making operation scheme, but the curve is time-varying due to the influence of the changes of pipeline operation conditions and compressor performance states. By comparing the accuracy of performance curves generated by the three methods of least square, BP neural network and Adaptive Neuro-Fuzzy Inference System (ANFIS), a self-adaptive performance curve generation method based on ANFIS was proposed. The ANFIS mapping network of performance curve was modified by inputting the real-time operation data of the compressor irregularly, and the real-time performance curves in different periods were obtained. The real-time performance curve of a compressor in 2018 was generated by the proposed method, and the validity and accuracy of the method were verified. The results show that the relative error between the compressor operation curve obtained by the self-adaptive performance curve generation method based on ANFIS and the actual operation curve is less than 3%, which meets the requirement for accuracy in field engineering. The research results could provide theoretical basis for compressor performance analysis, energy consumption evaluation, and operation scheme formulation.

     

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