| 摘要 |
<p>PURPOSE:To enable selection of a signal necessary for pursuit of cause by preserving a time-series data comprising a plurality of measuring signals from a power plant into a disc of a calculator to select a signal necessary for monitoring from on a cause-effect network between signals prepared. CONSTITUTION:A plurality of signals are latched through an A/D converter connected to a power plant 1 to detect a necessary abnormal condition by an abnormality detection means 3 and a data comprising a plurality of signals then obtained is preserved with a data preserver 4. Besides raw data values, a time-series data preserved is preserved together with a wave form pattern abbreviated, a name of signal, data collecting conditions, a name of abnormality detection trigger signal and the like concerning the data. Then, the selection of signals necessary for the pursuit of cause is performed with a data retrieving device 7 and the results are shown on a display 8. A network data base is prepared beforehand about a cause-effect network. This enables quick selection of a proper signal responding to conditions at emergency without overlooking it.</p> |
