DEVICE FOR DETECTION OF SYNCHRONOUS VIBRATIONS SOURCE Russian patent published in 2014 - IPC H02J3/24 

FIELD: electricity.

SUBSTANCE: device includes a block of correlation devices for each generator, which includes the first and the second sensors that are connected to terminals of a synchronous generator, the first and the second correlation devices determining coefficients of mutual correlation of the effective value of voltage and reactive power, the first inputs of which are connected to the output of the first sensor, the second input of the first correlation device is connected to the output of the second sensor, a time delay unit the input of which is connected to the output of the second sensor as well, and the output is connected to the second input of the second correlation device, and an analysing device to the inputs of which there connected are outputs of the first and the second correlation devices of blocks of correlation devices of all the generators; besides, a signal at the output of the analysing device appears in case one of the synchronous generators is a source of synchronous vibrations in a power system or intercomputer vibrations in the group of generators of one thermal power plant.

EFFECT: providing the possibility of detecting a source of appearance of synchronous vibrations.

2 cl, 5 dwg