基于外中子源强度的ADS次临界堆堆芯功率控制

doi:10.11889/j.0253-3219.2019.hjs.42.080602

Nuclear Techniques ›› 2019, Vol. 42 ›› Issue (8): 80602-080602.doi: 10.11889/j.0253-3219.2019.hjs.42.080602

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles Next Articles

ADS subcritical reactor core power control based on external neutron source intensity

Tianyu HUI,Run LUO,Wenjie ZENG(),Jinsen XIE,Qingfeng JIANG

School of Nuclear Science and Technology, University of South China, Hengyang 421001, China

Received:2019-05-13 Revised:2019-06-12 Online:2019-08-10 Published:2019-08-23
Contact: Wenjie ZENG E-mail:zengwenjie0218@163.com
About author:HUI Tianyu, male, born in 1998, undergraduate in University of South China, major in nuclear engineering and technology
Supported by:
the Excellent Youth Project of Hunan Provincial Education Department(18B259)

Abstract

Abstract: Background

Accelerator driven subcritical system (ADS) can be used for power generation, proliferation and transmutation. China initiative accelerator driven system (CIADS) is a self-designed ADS research facility in China. It only relies on the intensity of neutron source outside the accelerator to regulate the core power.

Purpose

This study aims to accurately regulate power in transient conditions to ensure the transient safety of the reactor based on the strength of external neutron source.

Methods

The lumped parameter method was used to establish the core nonlinear model of CIADS, and the micro-disturbance linearization method was used to linearize the core nonlinear model. Dual-input and dual-output core state space model was established, and core power fuzzy proportional integral derivative (PID) controller was designed to carry out disturbance control simulation to obtain the core control response characteristics of CIADS.

Results & Conclusion

The simulation results show that the use of fuzzy PID controller can achieve good control of core relative power under the different external neutron source relative intensity disturbance or core inlet temperature disturbance.

Key words: External neutron source relative intensity, Accelerator driven subcritical system, Core power, Fuzzy PID controller

CLC Number:

TL362⁺.5

Tianyu HUI, Run LUO, Wenjie ZENG, Jinsen XIE, Qingfeng JIANG. ADS subcritical reactor core power control based on external neutron source intensity[J].Nuclear Techniques, 2019, 42(8): 80602-080602.

Figures/Tables 4

Table 1

Fig.1

Fig.2

Fig.3

References 13

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参数Parameters	初始设计值Initial design value
堆芯功率Core power	10 MWth
堆芯初始反应性Core initial reactivity	-0.166 738
堆芯燃料质量Core fuel quality	3 816 kg
堆芯冷却剂质量Core coolant quality	19 200 kg
燃料与冷却剂传热系数Heat transfer coefficient of fuel and coolant	3.752×10⁵ W·K^-1
燃料的定压比热容Constant pressure specific heat capacity of fuel	308.0 J?(kg·K)^-1
冷却剂定压比热容Constant pressure specific heat capacity of coolant	145.0 J?(kg·K)^-1
堆芯冷却剂流量Core coolant flow rate	608.0 kg?s^-1
燃料多普勒系数Fuel Doppler coefficient	-1.15×10^-5 K^-1
冷却剂反馈系数Coolant feedback coefficient	-0.294 3×10^-5 K^-1

ADS subcritical reactor core power control based on external neutron source intensity

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