Transient Calculation of Deaerator and Control Scheme of Cavitation Prevention for AP1000 Nuclear Power Plants

doi:10.11930/j.issn.10.11930.2015.4.66

Abstract

Abstract: In order to formulate a reasonable NPSH(net positive suction head) control scheme under load rejection conditions of AP1000 nuclear power plants and effectively prevent cavitation in the main feed water pumps during the operation, the cavitation mechanism and the control logics of deaerator water level and pressure are analyzed and the model for deaerator transient calculation is established based on the collected data. The calculation results show that with the setting value of the condensate flow limit at 30% and the deaerator transient pressure decreasing rate at 0.001 77 MPa/s, the NPSH requirements for the main feed water pumps can be met. Therefore, the cavitation prevention schemes and optimization methods for typical load rejection conditions are proposed as the guidance for commissioning and operation to improve the safety of nuclear power plants.

Key words: nuclear power plant, deaerator, transient calculation, net positive suction head, control optimization

CLC Number:

TM623.7

GU Xianqing, GAO Zhiqing, TU Pan, CHENG Xueqing. Transient Calculation of Deaerator and Control Scheme of Cavitation Prevention for AP1000 Nuclear Power Plants[J]. Electric Power, 2015, 48(4): 66-70.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.10.11930.2015.4.66

https://www.electricpower.com.cn/EN/Y2015/V48/I4/66

References

[1] 张哲. 基于IMC的锅炉汽包水位控制系统仿真研究[J]. 热力发电，2013，42（8）：59-62.
ZHANG Zhe. Internal model control based simulation of boiler drum water level control system[J]. Thermal Power Generation, 2013, 42(8): 59-62.
[2] 邹罗明. 除氧器暂态计算影响因素探讨[J]. 电力建设，2010，31（11）：102－105．
ZOU Luoming. Influencing factors of transient calculation of deaerator [J]. Electric Power construction, 2010, 31(11): 102-105.
[3] 顾进. 除氧器暂态过程的分析[J]. 华东电力，1998（6）：23－25．
GU Jin. The analysis for transient process of deaerator[J]. East China Electric Power, 1998(6): 23-25.
[4] 王保田. AP1000主给水泵组的设计选型分析[J]. 现代电力，2009，26（4）：66－70．
WANG Baotian. Design selection analysis for main feed water pump unit of AP1000 PWR [J]. Modern Electric Power, 2009, 26(4): 66-70.
[5] 钱能. 凝结水节流控制与经济效益分析[J]. 中国电力，2014，47（3）：69－73．
QING Neng. Economic benefit analysis and control logic of condensate throttling [J]. Electric Power, 2014, 47(3): 69-73.
[6] 王承亮. 1 000 MW机组凝结水系统优化改造研究[J]. 中国电力，2013，46（12）：48－51．
WANG Chengliang. Optimization of condensate circuit in 1 000 MW units [J]. Electric Power, 2013, 46(12): 48-51.
[7] 岳建华. 火力发电厂给水泵再循环控制系统优化研究[J]. 中国电力，2014，47（9）：11－17．
YUE Jianhua. Optimization on recirculation control of feedwater pump system in power plant [J]. Electric Power, 2014, 47(9): 11-17.
[8] 郑军. 600 MW机组除氧器暂态计算[J]. 电力设备，2006，7（10）：50－52．
ZHENG Jun. Transient calculation of deaerator for 600 MW power plant unit [J]. Electric Equipment, 2006, 7(10): 50-52.
[9] 王坚. 除氧器布置优化及暂态计算方法[J]. 电力建设，2006，27（9）：41－44．
WANG Jian. Optimization of deaerator arrangement and transient calculation method [J]. Electric Power Construction, 2006, 27(9):41-44.
[10] 薛阳. 蒸汽发生器水位的自适应模糊自抗扰控制[J].中国电力，2014，47（6）：90－94．
XUE Yang. Steam generator water level control based on self- adaptive fuzzy-ADRC logic [J]. Electric Power, 2014, 47(6): 90-94.
[11] 王波. 超超临界机组除氧器水位控制特性分析[J]. 电站系统工程，2011，27（4）：55－57．
WANG Bo. The analysis of deaerator water level control in supercritical unit [J]. Power System Engineering, 2011, 27(4): 55-57.

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