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「常陽」MK-III性能試験; 原子炉冷却材温度制御系の制御特性試験関係

MK-III Performance Tests in JOYO; Control Characteristic Tests of Reactor Coolant Temperature Control System

伊藤 敬輔; 川原 啓孝 ; 森 健郎 ; 城 隆久; 有吉 昌彦; 礒崎 和則 

Ito, Keisuke; Kawahara, Hirotaka; Mori, Takero; Jo, Takahisa; Ariyoshi, Masahiko; Isozaki, Kazunori

MK-Ⅲ冷却系を安定に制御できる制御定数の確認、及びプラントへ実際に外乱を印加した場合の安定性の確認を行うため、原子炉冷却材温度制御系の制御特性試験を実施した。本制御特性試験は、M系列試験、主冷却器出口温度変化応答試験及び制御棒小引抜・挿入応答試験の3項目で構成している。試験の結果、冷却材温度制御系の主送風機ベーン開度制御範囲におけるPI定数は、比例ゲイン0.36$$sim$$1.12(MK-Ⅱの約1/2)、積分定数80秒が最適であることが確認できた。このPI定数に対する制御系のゲイン余裕は7$$sim$$19dBであった。

Control characteristic tests of reactor coolant temperature control system were carried out to confirm its controlling constant to make MK-III hear transport system control stably, and stability against actual disturbance to the plant. The control characteristic test consists of three kinds of tests. As a result, the optimum PI parameters of the reactor coolant temperature control system was confirmed that the proportional gain is between from 0.36 to 1.12(approximately half of MK-II), the integral time is 80 respectively. The gain margin of the control system was between from 7 to 19dB of through the vane opening range.

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