Rapid Method for Modeling Thermal Power Unit Fluid Network

Improving the accuracy of thermal power plant simulators is the primary goal of simulator developers. There are many fluid networks in a thermal power plant. The accuracy of the simulator is entirely dependent on the quality of the simulation of these fluid networks. Fluid network theory is a method that combines grid with fluid mechanics to study the transport state and transience of fluids. This study focused on designing a rapid modeling method to model the fluid dynamics in thermal power plants using a data driven mechanism analysis. First, the mechanism model structure of the fluid network was established based on mechanism analysis of the key devices. The mechanism model was devised using the concept of node and branch in the signal flow graph. Next, the undetermined parameters in the structure model were identified using historical data and Particle Swarm Optimization (PSO). In this way, the fluid network model could be developed quickly. The modeling process has been described herein, considering two specific examples.