CONTROL ROD DROP TIME MEASUREMENT METHOD INTEGRATED WITH ROD POSITION MEASUREMENT DEVICE

WIPO Patent Application WO/2022/116367

A1

A control rod drop time measurement method integrated with a rod position measurement device for measuring the rod drop time of each channel. The method comprises the following steps: S1, monitoring the voltage of an A group of coils, and capturing a rod drop signal; S2, searching a maximum value or local maximum value point (tmax, Vmax) of the rod drop speed; S3, backtracking from tmax to calculate a rod drop starting time point T4; S4, backtracking from the minimum value point of DROPref to search a time point T4 when it is reduced to 33%; and S5, calculating a point t6 of the rod drop speed of less than 0 from tmax to the back. According to the measurement method, signal switching in the test process can be canceled, the measurement and analysis automation level is improved, and nuclear reactor starting plan key path time occupied by rod drop time measurement is effectively reduced.

CHANG ZHENGKE (CN)
ZHANG MINGHUI (CN)
HUANG YUAN (CN)
TIAN YE (CN)
XU SHAOHUA (CN)
LIU XINXIN (CN)
ZHU WEIJIAN (CN)
MA YIMING (CN)
XU SHENGFENG (CN)
CHAO BO (CN)
TAO NING (CN)
YANG ZIHUA (CN)
LANG DESONG (CN)
WANG QICHAO (CN)

PCT/CN2021/071640

June 09, 2022

January 14, 2021

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NUCLEAR POWER OPERATIONS RES INSTITUTE NPRI (CN)

G21C17/12; G21C17/10

CN109243644A	2019-01-18
CN103854708A	2014-06-11
CN102280150A	2011-12-14
CN107833643A	2018-03-23
CN111696692A	2020-09-22
CN204575828U	2015-08-19
CN104332195A	2015-02-04
US6192096B1	2001-02-20

BEIJING KEYI INTELLECTUAL PROPERTY FIRM (CN)

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