VALVE OPERATION ABNORMALITY DETECTION SYSTEM, VALVE OPERATION ABNORMALITY DETECTION METHOD AND PROGRAM

To detect abnormality in the opening/closing operation of a control valve with higher accuracy.SOLUTION: A valve operation abnormality detection system includes a condition setting part for setting an allowable arrival time being a time range to be allowed from a closed state of a valve opening degree to a specified opening degree about a control valve to undergo opening/closing control according to a predetermined opening/closing pattern, and an abnormality determination part for determining, about the control valve, that the control valve is normal in the case that a time from the closed state of the valve opening degree to the specific opening degree is within the range of the allowable arrive time, and determining that the control valve is abnormal in the case that the time when the valve opening degree becomes the specific opening degree is out of the range of the allowable arrival time.SELECTED DRAWING: Figure 1 【課題】制御弁の開閉動作の異常検知をより精度良く行う。【解決手段】弁動作異常検知システムは、予め定められた開閉パターンに従って開閉制御される制御弁について、弁開度が閉状態から規定開度となるまでに許容される時間範囲である到達許容時間を設定する条件設定部と、制御弁について、弁開度が閉状態から規定開度となるまでの時間が到達許容時間の範囲内である場合、制御弁が正常であると判定し、弁開度が規定開度となるまでの時間が到達許容時間の範囲外である場合、制御弁が異常であると判定する異常判定部と、を備える。【選択図】図１