Calculation of Protection Parameter of Linear Power Density in Tianwan Nuclear Power Station

Li Youyi; Yao Jinguo; Li Zaipeng; Yang Xiaoqiang; Wang Han; Dong Chao; Ye Liusuo

doi:10.13832/j.jnpe.2014.S2.0008

Volume 35 Issue S2

Feb. 2025

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Li Youyi, Yao Jinguo, Li Zaipeng, Yang Xiaoqiang, Wang Han, Dong Chao, Ye Liusuo. Calculation of Protection Parameter of Linear Power Density in Tianwan Nuclear Power Station[J]. Nuclear Power Engineering, 2014, 35(S2): 8-11. doi: 10.13832/j.jnpe.2014.S2.0008

Citation:

Li Youyi, Yao Jinguo, Li Zaipeng, Yang Xiaoqiang, Wang Han, Dong Chao, Ye Liusuo. Calculation of Protection Parameter of Linear Power Density in Tianwan Nuclear Power Station[J]. Nuclear Power Engineering, 2014, 35(S2): 8-11. doi: 10.13832/j.jnpe.2014.S2.0008

Citation:

Li Youyi, Yao Jinguo, Li Zaipeng, Yang Xiaoqiang, Wang Han, Dong Chao, Ye Liusuo. Calculation of Protection Parameter of Linear Power Density in Tianwan Nuclear Power Station[J]. Nuclear Power Engineering, 2014, 35(S2): 8-11. doi: 10.13832/j.jnpe.2014.S2.0008

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Calculation of Protection Parameter of Linear Power Density in Tianwan Nuclear Power Station

doi: 10.13832/j.jnpe.2014.S2.0008

Jiangsu Nuclear Power Corporation, China National Nuclear Power Corporation, Lianyungang, Jiangsu, 222042, China

Received Date: 2014-10-20
Rev Recd Date: 2014-11-27

Available Online: 2025-02-15

Abstract

Abstract

Fifty-four neutron-temperature measuring channels（NTMCs） of in-core instrument system（ICIS） in Tianwan nuclear power station（TNPS） are divided into 4 groups, and the self-power nuclear detectors（SPNDs） current in channels of each group can be converted to power. The in-core power field can be obtained by extended calculation. Parameters such as the coefficient of converting current into power are calculated by ICIS server computer of upper level and transferred to ICIS server computer of lower level. The maximum linear power density of each fuel assembly（FA） is weighted average of linear power densities calculated by four NTMCs in surrounding impact area. The weight coefficient is relative to the distance from SPND to FA in surrounding impact area. This paper expounds the calculation method on protection parameter of linear power density by SPND’s current. This method is simple and timely response, and the error is less than 5.7%. It has been successfully used in the real-time online protection of TNPS operation units.
- Tianwan nuclear power station,
- Neutron-temperature measurement channel,
- Self-powered nuclear detector,
- Linear power density