ABNORMALITY SIGN MONITORING SYSTEM

PROBLEM TO BE SOLVED: To provide an abnormality sign monitoring system capable of appropriately detecting an abnormality sign while curbing an increase in a calculation load taking into consideration base load operation of a nuclear power plant.SOLUTION: An abnormality sign monitoring system, to mon...

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Bibliographic Details
Main Authors AZUMA TAKASHI, NISHITANI JUNICHI, UTSUMI MASAFUMI, SHIZUKA SUSUMU, SHIBUYA JUN, MASHIO KENJI, YAMASHITA TAKAE
Format Patent
LanguageEnglish
Japanese
Published 30.03.2017
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Summary:PROBLEM TO BE SOLVED: To provide an abnormality sign monitoring system capable of appropriately detecting an abnormality sign while curbing an increase in a calculation load taking into consideration base load operation of a nuclear power plant.SOLUTION: An abnormality sign monitoring system, to monitor a nuclear power plant in a manner that can detect an abnormality sign, comprises: a storage section which stores plant operation data including a measurement parameter measured in the nuclear power plant; and a monitoring control section which detects an abnormality sign of the nuclear power plant on the basis of the plant operation data. The nuclear power plant is subject to base load operation to adjust the measurement parameter to a predetermined target value. The monitoring control section sets a normal range W where the base load operation is determined to be normal if a current trend of the measurement parameter is kept therein on the basis of the past plant operation data and detects the abnormality sign when the current measurement parameter exceeds the set normal range W.SELECTED DRAWING: Figure 3 【課題】原子力発電プラントがベースロード運転を行うことを考慮して、計算負荷の増大を抑制しつつ、異常予兆を好適に検知することができる異常予兆監視システムを提供する。【解決手段】原子力発電プラントの異常予兆を検知可能に監視する異常予兆監視システムであって、原子力発電プラントにおいて計測される計測パラメータを含むプラント運転データを記憶する記憶部と、プラント運転データに基づいて、原子力発電プラントの異常予兆を検知する監視制御部と、を備え、原子力発電プラントは、計測パラメータが予め規定された目標値となるように、ベースロード運転を行っており、監視制御部は、過去のプラント運転データに基づいて、現在の計測パラメータの推移が正常となる範囲である正常範囲Wを設定し、現在の計測パラメータが、設定した正常範囲Wを超えた場合、異常予兆を検知する。【選択図】図3
Bibliography:Application Number: JP20150188599