| 摘要 |
PROBLEM TO BE SOLVED: To make exactly estimable a system voltage after a bank switching for reactive power regulation from the state of a system before the bank switching for reactive power regulation. SOLUTION: Based on the respective measured values of current I, voltage V and phase angle R of a system 16 before the switching of a capacitor bank 20 and parameters (a), (b) and (c) to be successively updated, a voltage changeΔV after the switching of the capacitor bank 20 is calculated using the calculation expression ofΔV=a×I+b×V+c×R. Further, the parameters (a), (b) and (c) are found from N pieces of voltage changesΔV successively observed after the switching of the capacitor bank 20 by the method of least squares and every time the voltage changeΔV is observed, these parameters are successively updated.
|
