| 摘要 |
A method for control of an electric system operating condition comprises measuring voltage value in control nodes of the mains, measuring currents in cross-sections and system frequency, determination of operating parameters sensitivity relatively to changing node powers of signal shaping, which is proportionate to economic waste caused by system operation to changing node powers, adding it to the signal proportionate to loss caused by power flow across controlled cross-sections. The obtained signal is compared to the signal which is proportionate to admissible, economically feasible loss, conditioned by characteristics and technological conditions of electric main operation, the quality coefficient of regulator under voltage operation is taken into account, loss coefficient is determined according the expression:, (1)Coefficient of remaining lifetime according parameter of accumulated commutated current is determined according the formula:, (2)residual current of commutation, which is determined according the formula:, (3)Or resource coefficient according number of switching, which is determined according the formula:, (4)Weight coefficients, which are determined according the expression:,,, (5)Cost of over-rated power technical losses, which is determined according the formula:, (8)Total cost, which is determined according an expression:, (9)quality factor of transformer operation, which is calculated according the expression:. |
