VOLTAGE DIFFERENCE RELAY Russian patent published in 2003 - IPC

FIELD: electrical engineering; generator voltage adjustment to supply mains voltage. SUBSTANCE: relay has first rectifier unit whose input functions as generator voltage input; second rectifier unit whose input functions as supply voltage input; algebraic adder whose subtraction and addition inputs are connected to outputs of first and second rectifier units, respectively; first and second comparators whose inputs are connected to algebraic adder output; first and second multipliers whose first inputs are connected to outputs of first and second comparators, respectively; and signal module shaper whose input is connected to output of algebraic adder and output, to second inputs of first and second multipliers, outputs of the latter being used, respectively, as outputs of generator voltage increase signal and generator voltage decrease signal. EFFECT: enhanced precision. 1 cl, 2 dwg