Full-range steam generator 's water level model and analysis method based on cross-calculation

作者：Chen, Yongwei^*; Xie, Yongjing; Li, Yonggang; Ling, Jun; Zhou, Xinxing

来源：PROGRESS IN NUCLEAR ENERGY, 2021, 133: 103635.

DOI：10.1016/j.pnucene.2021.103635

• Cross-calculation
• Steam generator water level
• Steam generator water density
• Pressure difference calculation
• Energy conservation
• Uncertainty

The steam generator is a vertical natural circulation device that produces saturated steam. It is difficult to accurately measure the water level of the steam generator because there are different forms of boiling states and dynamics under different operating conditions. The existing measuring methods for the water level of the steam generator are calibrated under specific operating conditions, and deviations from the calibration conditions may result in large deviations in the measurements. Based on the design and installation characteristics of the existing wide/narrow range water level transmitter, this paper proposes an accurate steam generator water level computational model. The model calculates the water density of full-range steam generator. Moreover, the model can perform the real-time calculations of the steam generator water level under various operating conditions. According to the statistical data of the CPR1000 nuclear power plant, the model and accurate analysis method based on the cross-calculation (A method of comparing and calculating parameters measured by different measurement elements of the same measurement object.) are simple and can provide effective solutions for the water levels of the full-range steam generator.