Method and system for monitoring and alarming operation state of thermal power plant equipment

The invention discloses a thermal power plant equipment operation state monitoring and alarming method and system, particularly relates to the technical field of thermal power plant safety monitoring, and is used for solving the problem that enough information cannot be provided to predict the performance change of a desulfurization system or early recognize potential equipment faults of the desulfurization system in the prior art. Direct and indirect influences of an air preheating system and a steam condensation system on the desulfurization efficiency of a desulfurization system are evaluated by analyzing the heat efficiency of the air preheating system and the stability of the steam condensation system; the analysis result of the fluctuation condition of the electric charge quantity of particulate matters in the flue gas is combined with the heat efficiency in the operation of the air preheating system and the stability of the steam condensation process of the steam condensation system for comprehensive a