Research on Rod Position Calculation Method of Multi-coil Inductive Rod Position Detector Based on Principle of Segmented Coil

Gao Longjiang; Tang Jiankai; Fu Guozhong; Wang Yiming; Zhang Xuefeng; Wang Xiangyi; Luo Lingyan

doi:10.13832/j.jnpe.2023.S2.0166

Volume 44 Issue S2

Dec. 2023

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Article Navigation > Nuclear Power Engineering > 2023 > 44(S2): 166-170

Gao Longjiang, Tang Jiankai, Fu Guozhong, Wang Yiming, Zhang Xuefeng, Wang Xiangyi, Luo Lingyan. Research on Rod Position Calculation Method of Multi-coil Inductive Rod Position Detector Based on Principle of Segmented Coil[J]. Nuclear Power Engineering, 2023, 44(S2): 166-170. doi: 10.13832/j.jnpe.2023.S2.0166

Citation:

Gao Longjiang, Tang Jiankai, Fu Guozhong, Wang Yiming, Zhang Xuefeng, Wang Xiangyi, Luo Lingyan. Research on Rod Position Calculation Method of Multi-coil Inductive Rod Position Detector Based on Principle of Segmented Coil[J]. Nuclear Power Engineering, 2023, 44(S2): 166-170. doi: 10.13832/j.jnpe.2023.S2.0166

Citation:

Gao Longjiang, Tang Jiankai, Fu Guozhong, Wang Yiming, Zhang Xuefeng, Wang Xiangyi, Luo Lingyan. Research on Rod Position Calculation Method of Multi-coil Inductive Rod Position Detector Based on Principle of Segmented Coil[J]. Nuclear Power Engineering, 2023, 44(S2): 166-170. doi: 10.13832/j.jnpe.2023.S2.0166

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Research on Rod Position Calculation Method of Multi-coil Inductive Rod Position Detector Based on Principle of Segmented Coil

doi: 10.13832/j.jnpe.2023.S2.0166

1.
State Key Laboratory of Power Transmission Equipment Technology, Chongqing University, Chongqing, 400044, China
2.
Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2023-07-11
Rev Recd Date: 2023-09-21
Publish Date: 2023-12-30

Abstract

Abstract

Rod position detector is the main equipment for rod position detection in nuclear reactor, and its detection accuracy is very important to the safety and normal operation of nuclear reactor. Thus, this paper proposes a high precision rod position calculation method for multi-coil inductive rod position detector used in nuclear reactor. The structure and detection principle of multi-coil inductive rod position detector are analyzed, and the dynamic characteristics of multi-coil inductive rod position detector are also analyzed based on finite element method. The results show that the induced voltage of each segmented detection coil has a specific region, where the voltage peak value changes linearly. Based on this characteristic, a rod position calculation method of segmented coils of multi-coil inductive rod position detector is proposed. The peak value of each detection coil in the current cycle is collected in real time when the control rod moves at different positions, and then the rod position is calculated according to the relationship between the peak value of induced voltage and the rod position in the rod position calculation area. Finally, the theoretical analysis and rod position calculation method are verified by modeling with ANSYS and MATLAB/Simulink software. The simulation results show that the proposed rod position calculation method can achieve a detection accuracy of <0.2mm for rod position detector. The detection accuracy meets the requirements of high-precision rod position detection for control rod.
- Inductive rod position detector,
- High precision rod position calculation,
- Segmented coil,
- Control rod position,
- Peak value of induced voltage

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References(8)

References

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