FIELD: electrical engineering.
SUBSTANCE: method relates to a. c. power supply system of electric railways, namely to controlling voltage by means of transformer with on-load tap changer (OLTC) and series capacitance unit with uncontrolled and controlled sections included in the suction line. To achieve technical result it is necessary to measure input inductive resistance of the substation to buses 110 (220) kV and at current of suction line less than rated current of nonregulated section of series capacitance unit to determine the practicability of switching on (off) of controlled section of series capacitance unit for approximation of resistance of series capacitance unit to resistance of the substation.
EFFECT: technical result - increase of efficiency of joint operation of on-load tap changer (OLTC) and series capacitance unit with allowance for the balancing properties of series capacitance unit.
1 cl, 1 dwg
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