关键词: 连续型企业, 生产过程, 能耗过程, 计时混杂Petri网, 预测模型, 不变行为状态, 系统仿真

Abstract: Aiming at the energy-saving and emission reduction in continuous process enterprises, by coupling production process and energy consumption process in enterprises, the energy prediction model of production process was established by using Time Hybrid Petri Nets(THPN) method. The enabling and firing for transitions, conflicts resolution and dynamic characteristics in model were discussed. The THPN simulation method of enterprises energy prediction model was proposed based on constant behavior state and evolution representative graph. An example was used to illustrate the feasibility of this method. It provided precise numerical prediction for energy consumption in production process and conducted simple fault analysis for production as the faults occurred.

Key words: continuous process enterprises, production process, energy consumption process, timed hybrid Petri nets, prediction model, invariant behaviour state, system simulation