Conference Proceedings

A PHYSICS-BASED DYNAMIC MODEL FOR BOILERS, PART 2: MODEL REDUCTION IN A COGENERATION APPLICATION

Matthew J Blom, Michael J Brear, Chris G Manzie, Ashley P Wiese

PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2017, VOL 6 | AMER SOC MECHANICAL ENGINEERS | Published : 2017

Abstract

This paper is the second part of a two part study that develops, validates and integrates a one-dimensional, physics-based, dynamic boiler model. Part 1 of this study [1] extended and validated a particular modelling framework to boilers. This paper uses this framework to first present a higher order model of a gas turbine based cogeneration plant. The significant dynamics of the cogeneration system are then identified, corresponding to states in the gas path, the steam path, the gas turbine shaft, gas turbine wall temperatures and boiler wall temperatures. A model reduction process based on time scale separation and singular perturbation theory is then demonstrated. Three candidate reduced ..

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