504. 抽気制御による沸騰水型原子力発電所の出力制御法とその応答解析

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  • Prompt Response to Load Change by Extraction Flow Control
  • チュウキセイギョ ニ ヨル フットウスイガタ ゲンシリョク ハツデンショ ノ シュツリョク セイギョホウ ト ソノ オウトウ カイセキ

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As nuclear power generation comes to occupy an ever larger portion of electric energy sources, it should become desirable or rather necessary for the nuclear power plants to have prompt load response characteristics to accommodate the necessary spinning reserve of the power system, even if these plants are to be operated in principle as what is known as "base load plants".<BR>The problem treated here is to find the possibility of realizing prompt load response in narrow range of BWR plants, and not wide range automatic power control.<BR>We have analyzed the load response characteristics of BWR plants by means of extraction flow variation. A decrease of the extraction flow was found to cause the plant power to increase through the following three processes:<BR>(1) Steam flow increase in the turbine<BR>(2) Reactivity increase occasioned by reactor pressure rise<BR>(3) Reactivity increase occasioned by reactor feed water temperature drop

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