| 摘要 |
PURPOSE:To easily obtain the unstable point of a voltage by designating conditions at the buses of a power system to obtain a stable point, updating the amplitude of the voltage, so updating a phase angle as to become a load power invariable, and calculating 1 tide until the unstable point is sequentially obtained with them as an initial value. CONSTITUTION:System information from a power system 1 is input to an electronic computer 4 through information transmitters 2-1, 2-1, a tide is calculated on the basis of the information to display stable and unstable points of the system voltage. Here, a tide is calculated on the basis of the information collected from the system 1 to obtain an initial stable point, and the tide is again calculated by varying the amplitude, phase angle of the voltages of the buses of the stable point. If the variation in the voltage is small, it is converged to the stable point, while if the variation in the voltage becomes larger than a predetermined value, it is converged to the unstable point. Thus, the stable point and the corresponding unstable point can be easily obtained. |
