FIELD: electricity.
SUBSTANCE: upper and lower limits should be set for reactive power for the purpose of voltage regulation of each tractive motor operating area. Supply voltage is determined for reactive power sources. Locomotive current and voltage values are measured and then reactive power is calculated and compared with its upper and lower limits. When reactive power of electric locomotive is less than lower limit then reactive power source will be switched on/off to power supply source with less voltage. When reactive power of electric locomotive is more than upper limit then reactive power source will be switched to power supply source with bigger voltage.
EFFECT: improvement of accuracy and extension of control range.
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