Journal of Shanghai Jiao Tong University

Journal of Shanghai Jiaotong University >

2022 , Vol. 56 >Issue 1: 21 - 27

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2020.355

A Real-Time Mass Flow Rate Estimation Method of Recirculation Water in Steam Generator of Nuclear Power Plants

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  • 1. State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment, China Nuclear Power Engineering Co., Ltd., Shenzhen 518172, Guangdong, China
    2. Department of Automation, Shanghai Jiao Tong University, Shanghai 200240, China

Received date: 2020-10-29

  Online published: 2021-06-08

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Abstract

According to its actual structure, the steam generator is divided into the hot leg, the cold leg, the steam-water separator, and the steam chamber, where the hot leg and the cold leg are further divided into a descending channel and an ascending channel. Based on the mass, energy, and momentum conservation laws, the distribution parameter models for the hot leg, the cold leg, the steam-water separator, and the steam chamber are established. Combining the physical parameter database of the working medium and the data collection system (DCS) real-time measurement data, the model is solved in real time and the estimated mass flow rate of recirculation water is obtained. The verification results using the operating data of a CPR1000 nuclear power unit show that the calculated temperature, the pressure, and the mass flow rate of the outlet saturated steam of the steam generator agree well with the measured values, which indirectly verifies the correctness of the estimation approach of recirculation water proposed in this paper.

Key words： steam generator; distributed parameter model; recirculation water; mass flow rate; real-time estimation

Cite this article

HUI Jiuwu, LING Jun, LUAN Zhenhua, WANG Gaixia, DONG He, YUAN Jingqi . A Real-Time Mass Flow Rate Estimation Method of Recirculation Water in Steam Generator of Nuclear Power Plants[J]. Journal of Shanghai Jiaotong University, 2022 , 56(1) : 21 -27 . DOI: 10.16183/j.cnki.jsjtu.2020.355

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