| 摘要 |
FIELD: electricity. ^ SUBSTANCE: in high-voltage electric networks for compensation of reactive power and stabilisation of voltage. According to the method, three-phase magnetisation-controlled reactor is permanently connected to the mains, and in case voltage deviates from preset value three-phase sectional condenser battery is connected via breakers to the mains or disconnected from the mains. At that connection of every section of three-phase condenser battery is performed with simultaneous performance of the following conditions: U<=Uset and I<=Imin and t-tn-1>=Deltat, disconnection of every section of three-phase condenser battery is carried out with simultaneous performance of the following conditions: U>=Uset and I>= Imax and t-tn-1>=Deltat, where U - mains voltage at the moment that precedes commutation of condenser battery section, Uset - preset mains voltage, I - reactor current at the moment that precedes commutation, Imin Imax - preset minimum and maximum reactor current, t - moment of commutation time, tn-1 - moment of time of previous commutation, Deltat - setting of commutation delay time. ^ EFFECT: improvement of mains voltage regulation quality and increase of substation equipment reliability. ^ 1 dwg
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