为了解决某空气压缩管线项目新建4台离心机组并联运行的问题，提出通过设立统一的防喘裕度（DEV）进行负荷分配的控制方案。各机组根据从负荷中心站接收的负荷控制量与自身的负荷平衡量进行加权计算，经过解耦输出到转速计算模块和防喘阀，在满足出口汇管压力的基础上，实现对各台机组性能的平衡调节。采用准非线性化建模方法，结合机理建模和经验公式，通过SimuBuilder平台搭建模型，模拟机组热工过程。经过仿真测试和项目工程实现表明：设计方案下出口汇管压力控制平稳，各机组同时分担管线流量波动，并使喘振风险和能耗保持在最小状态。

In order to solve the issues of parallel operation of four newlybuilt centrifugal compressors in air compression pipeline,the scheme of load sharing and control by setting up a unified antisurge margin (DEV) is proposed.Each unit performs a weighted calculation based on the load control amount received from the load center station and its own load balance amount,and outputs it to the speed computing module and antisurge valve through decoupling,so as to realize the balance control of each unit′s load on the basis of satisfying the outlet manifold pressure.The quasi nonlinear modeling method is adopted,combined with mechanism modeling and empirical formula,and the model is built through SimuBuilder platform to simulate the thermal process of the unit. The simulation test and project engineering realization show that under the design scheme,the pressure of the outlet manifold is controlled to be stable,and each unit simultaneously shares the fluctuation of the pipeline flow and keeps the surge risk and energy consumption at a minimum state.

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