| 摘要 |
PURPOSE:To enlarge a scale indicated in CRT and thereby to increase the accuracy of indication, by indicating the difference between actual and reference electric energies and the difference between estimated and reference electric energies. CONSTITUTION:A target electric energy is denoted as WHd, an electric energy in the case when the target electric energy is reached by the reception of a fixed power, that is, a reference electric energy, as WHa=WHdXt/30, an actual electric energy reset at each demand time as WH, and an estimated electric energy in a period of the present time t0 30min as WHpt0. The horizontal axis of the picture plane of CRT is taken for a time t, while the vertical axis thereof is taken for y. The reference electric energy 33 is indicated horizontally in the plane, and the difference between the actual and reference electric energies 31 and 33 (y=WH-WHa) and the difference between the estimated and reference electric energies 32 and 33 (y=WHpt0-WHa) are also indicated therein. According to this method, it can be determined rapidly that the demand tends to be excessive when the differences are positive, and that it tends to be unreached when the differences are negative. |
