针对母管制机组一直存在的蒸汽母管压力难以稳定控制的问题,本文提出了一种基于和利时DCS控制系统的APC协调控制方案。该方案可以解耦影响锅炉燃烧的主要因素,优化分配锅炉负荷,快速平衡锅炉产汽与外界用汽之间的能量差,达到稳定蒸汽母管压力的目的。现场的实际应用证明了该方案的可行性。 Aiming at the problem that the steam manifold pressure in the mother control unit always exists is difficult to be stably controlled, an APC coordinated control plan based on Hollysys DCS control system is proposed in this paper. The scheme can decouple the main factors that affect the boiler combustion, optimize the distribution of the boiler load, quickly balance the energy difference between the boiler steam and the outside steam, and achieve the purpose of stabilizing the steam manifold pressure. The practical application of the site proved the feasibility of the program.