DOMINANT FACTOR MODELLING METHOD FOR THE THERMAL SYSTEM OF POWER STATION

How to improve the economy during the operation of power plant is a big problem encountered by the electricity generation company.To solve this problem,establishing a unit economy analyzes system is an effective way.In this article,by introducinging dominant factor method,the general mechanism modeling method of thermal systems with the specific operating data of the object system is combined to build up an off-design mathematical model for the thermal system of a power plant,which can precisely simulate the object system's thermodynamic character under the condition of large scale off-design operation.This model not only provides a reliable standard for monitoring the performance of the object system,but could also be used to diagnose the system's fault.The modeling practice with the thermal system of a 135MW power plant proved the effectiveness of the proposed method.