Real-time T-S fuzzy modeling method for heavy-duty gas turbine of combined cycle unit

Abstract

The invention discloses a real-time T-S fuzzy modeling method for a heavy-duty gas turbine of a combined cycle unit, and the method comprises the steps: firstly determining a to-be-recognized model structure of the gas turbine according to the actual demands, and collecting the onsite operation data of the combined cycle unit heavy gas turbine as the training data for model recognition; then, preprocessing the initial training data to eliminate adverse effects of abnormal data; secondly, classifying the data space through an improved entropy clustering method, and automatically obtaining the clustering number and the corresponding clustering center; on the basis, introducing an improved whale optimization algorithm to correct the initial clustering center, and calculating and obtaining a corresponding clustering radius; then, obtaining each sub-model parameter in the posterior identification through a least square algorithm with a forgetting factor, and carrying out fuzzy weighting toobtain global output; and finally, verifying the model obtained by identification.

Description

technical field [0001] The present invention generally relates to the technical field of modeling and optimization, and more specifically relates to a real-time T-S fuzzy modeling method for a heavy-duty gas turbine of a combined cycle unit. Background technique [0002] As the national development strategy pays more and more attention to energy and environmental issues, the power generation process based on clean energy has gradually become a trend in the development of the power industry. Among them, natural gas has become one of the preferred energy sources because of its easy acquisition, cleanness and environmental protection. The gas-steam combined cycle unit is currently the main device that uses natural gas to generate electricity in China. It generates the electricity required by users through the organic cooperation of the gas turbine system and the steam turbine system. As one of the most critical components of combined cycle units, heavy-duty gas turbines play a...

AI Technical Summary

Problems solved by technology

With the continuous expansion of the installed capacity of combined cycle power plants in recent years, the complexity of the gas turbine system and the strictness of the control requirements have also increased. The traditional T-S fuzzy modeling has been diffi...

Images