GSE仿真软件在燃气轮机系统建模的应用

  目的  台架试验是蒸汽系统设计与验证的重要手段，能否准确模拟边界条件是至关重要的影响因素。为获得一种可行的动态流量边界控制方法，  方法  基于蒸汽系统台架试验的蒸汽入口处流量变化要求，提出PID闭环控制与开环控制方案，并开展仿真对比分析。利用GSE平台建立蒸汽系统台架试验的仿真模型，基于试验热态调试数据进行仿真模型修正，并通过对比试验数据与仿真数据验证仿真模型的正确性和有效性。
  结果  仿真结果表明：迭代—收敛的开环控制方案可以满足蒸汽流量在10 s内线性减少20 t/h的控制要求，而传统PID闭环控制方案则难以实现。验证试验的结果表明：蒸汽入口处的流量变化满足台架试验要求，并与仿真结果相吻合。  结论  研究成果可为蒸汽系统台架试验的边界控制提供参考。

GSE simulation software application on modeling of gas turbine system

  Objectives  The bench test is an important means for the design and verification of steam systems, and the accuracy of the boundary condition is a critical factor for studying the characteristics of the bench test.  Methods  In order to propose a feasible dynamic flow boundary control method, based on the change requirements of steam inlet flow in the bench test of a steam system, the two schemes of PID closed-loop control and open-loop control are proposed, and simulation comparison and analysis are carried out. In the GSE simulation system, JTopmeret modules are employed to establish the whole steam test system, the optimization of the modules and correction of parameters are processed on the basis of the data detected in the steam test, and the simulation data is compared with the experimental data to verify the accuracy and validity of the simulation model.
  Results  For the control requirements of reducing steam flow linearly by 20 t/h within 10 s, the simulation results show that the open-loop control scheme allows the control of boundary conditions to be achieved after several iterations, while using the traditional PID closed-loop control scheme makes it difficult to control the boundary as required. The test results show that the flow change at the steam inlet meets the test requirements of the bench test, and is consistent with the simulation results.  Conclusions  The results of this research can provide references for the boundary control of steam system bench tests.