排温控制是确保燃机稳定安全运行的关键，为解决气体燃料波动导致燃机在基本负荷下运行超温问题,提出多种考虑机组运行安全性的基于前馈与反馈协同的排气温度控制策略。以新奥动力E135微型燃气轮机发电机组为对象,建立了燃机与排气温度控制联合动态仿真模型,并综合机组稳定性设计了适应度函数,借助粒子群寻优算法确定了不同排温控制策略的最优参数,对比了所提不同控制策略在燃机基本负荷工况下分别受到10%、20%燃气扰动的响应特性。结果表明,基于一次补偿的排温控制策略效果最佳。为了进一步验证最优控制策略的工程实用性,完成了在该型号机组真机测试,一次补偿策略可使机组有效响应基本负荷工况下10%以下的燃气扰动,提升了机组运行安全性,为微小型燃机控制系统设计或同行提供了工程参考价值。

Exhaust temperature control is essential for the stable and safe operation of gas turbines. To tackle the overheating issues that arise from gas fuel fluctuations, affecting gas turbines at base load operations, diverse strategies for exhaust temperature control have been proposed, prioritizing the safety of the unit operation and employing a synergy of feedforward and feedback mechanisms. Focusing on the ENN POWER E135 micro gas turbine generator set, a comprehensive dynamic simulation model integrating the gas turbine with its exhaust temperature control system was developed. A fitness function was formulated to assess the stability of the unit, and the Particle Swarm Optimization (PSO) algorithm was employed to identify the optimal parameters for distinct exhaust temperature control strategies. The comparative analysis of these strategies was conducted under base load conditions, subjected to 10% and 20% perturbations in gas supply. The findings reveal that the exhaust temperature control strategy utilizing primary compensation yields the most efficacious results. To substantiate the practical applicability of this optimal strategy in real engineering scenarios, field testing was conducted on the unit. The primary compensation strategy demonstrates its effectiveness in managing gas supply perturbations of less than 10% under base load conditions, thereby enhancing the unit"s operational safety. This provides significant engineering reference for the design of control systems for micro and mini gas turbines, as well as for industry peers.

上海市科学技术委员会科研计划项目(18DZ1202001)