PID Control of a Superheated Steam Temperature System Based on Integral Gain Scheduling

Xiaobo Cui, Pan Xu, Guohui Song, Haiming Gu, Hui Gu, Liang Wang and Hongxia Zhu
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Xiaobo Cui: School of Energy and Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China
Pan Xu: School of Electrical Engineering, Nanjing Vocational University of Industry Technology, Nanjing 210023, China
Guohui Song: School of Energy and Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China
Haiming Gu: School of Energy and Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China
Hui Gu: School of Energy and Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China
Liang Wang: School of Energy and Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China
Hongxia Zhu: School of Energy and Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China

Energies, 2022, vol. 15, issue 23, 1-16

Abstract: The high-quality operation of a superheated steam temperature (SST) system is a core fact of the safety, economy, and stability of thermal power units. How to improve the control performance of an SST system under large-varying operating conditions is becoming a research hotspot. To solve this challenge, this paper proposes a proportional integral derivative (PID) control strategy based on integral gain scheduling. Based on the introduction of the SST system and classical model under typical operating conditions, the control difficulties of the SST system are analyzed theoretically. Then, a PID control strategy, based on integral gain scheduling, is introduced for the cascade control structure, and the stability of the proposed control strategy is analyzed by calculating the PID stability region. Finally, the effectiveness of the proposed method is verified under nominal and uncertain conditions, where the proposed method could obtain satisfactory tracking and disturbance rejection control performance. Simulation results show the valuable application prospects of the proposed method.

Keywords: superheated steam temperature system; cascade control structure; PID control; integral gain scheduling; robustness (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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