| 摘要 |
A method for optimal control of electric system normal mode includes measurement of voltages in electric system control nodes, measurement of currents in controlled sections of the system; shaping a signal proportional to economical loss caused by power flow deviations in the controlled sections of allowable power magnitude; measurement of frequency in the energetic system; determination of operation parameter sensitivity to variation of node load; shaping a signal proportional to economical loss caused by frequency deviations from nominal value, summation of said signal and the signal proportional to economical loss caused by power flow deviations in the controlled sections of allowable power magnitude; comparison of the obtained signal and the signal proportional to permissible economical losses provided by parameters and technological conditions of the power network, which being a control preset, taking into account a quality factor of transformer operation with an under-load control device, and calculation of a lose factor, a commutated current remaining lifetime factor, shaping a control signal for the under-load control device, proportional to deflection of total power loss in the electric system from their optimal parameters, matching the shaped signal and signal taking into account limitations by: voltage, frequency, maximal available transmission line current, blanking zone of the under-voltage regulator, system standard loss of electric power in power transmission lines; according to result of the matching, if required, correction of the previously obtained control signal is performed, which is transmitted to drive of the under-load control device. |
