FIELD: measuring equipment engineering, possible use in systems for compensation of reactive power.
SUBSTANCE: for achievement of effect, reactive power meter additionally includes block for determining type of reactive power. Signal inputs of block for determining type of reactive power are connected to outputs of block for selecting constant component of reactive power signal, one of controlling inputs is connected directly to output winding of measuring voltage transformer, and other ones - to output winding of measuring voltage transformer through shifting device. Block for determining character of reactive power contains inverter of signal and switching keys, which depending on polarity of control voltages connect output of block for determining type of reactive power to its input either directly or through signal inverter.
EFFECT: increased precision of measurements.
3 cl, 6 dwg
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