基于差异演化算法和残差修正的涡轮增压机组防喘振控制

发布时间：2018-03-10 10:56

本文选题：涡轮增压机组　切入点：喘振　出处：《中国舰船研究》2016年05期 　论文类型：期刊论文

【摘要】：某型船用涡轮增压机组在低负荷运行时压气机容易发生喘振的问题。在涡轮增压机组喘振机理分析的基础上,采用差异演化算法辨识机组的理论喘振边界线,并利用机组出厂试验数据和理论计算结果的残差进行修正,避免采用经验值或理想状态下的实验数据作为辨识依据所造成的误差。在辨识得到的喘振边界线和已有涡轮增压机组模型的基础上,研究某型船用增压锅炉涡轮增压机组在低负荷运行时的喘振特性,并通过仿真实验得到压气机转速、增压比、空气流量与防止喘振的旁通阀最小开度与空气旁通流量之间的关系。结果表明:当压气机转速低于额定转速的8.35%时,必须紧急停机后重新启动;当转速高于额定转速的20.37%时,正常情况下不会出现喘振现象;当转速介于额定转速的8.35%~20.37%时,应保持对应的旁通挡板安全开度。
[Abstract]:On the basis of the analysis of surge mechanism of turbocharger, the differential evolution algorithm is used to identify the theoretical surge boundary line of a marine turbocharger. The residual error of the test data and the theoretical calculation result is used to correct it. The error caused by experience value or experimental data in ideal condition is avoided. On the basis of the obtained surge boundary and the existing turbocharger model, In this paper, the surge characteristics of turbocharger of a marine supercharged boiler at low load are studied, and the speed of compressor and the booster ratio are obtained by simulation experiment. The relationship between the air flow rate and the minimum opening of the bypass valve to prevent surge. The results show that when the speed of the compressor is less than 8.35 of the rated speed, the compressor must be shut down and restarted; when the speed is higher than 20.37 of the rated speed, When the rotational speed is between 8.35 ~ 20.37 of the rated speed, the corresponding safety opening of the bypass baffle should be maintained.
【作者单位】：海军工程大学动力工程学院;
【基金】：中国博士后科学基金特别资助项目(2013T60921)
【分类号】：U664.1

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