METHOD OF REMOTE PROTECTION AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2020 - IPC H02H3/00 G01R31/08 

FIELD: electricity.

SUBSTANCE: use in the field of electric power engineering for protection of electric networks. According to the remote protection method, additionally recording the actual short circuit process, measuring the parameters of the detected short-circuiting process, reproducing the short-circuit process in the protected network model at a different distance of the short-circuit point to coincidence in the corresponding scale of the detected and reproduced processes, value of distance of short circuit point, at which processes coincide, is fixed as measured distance value of short circuit point. Remote protection device additionally comprises registration unit, first input of which is connected to outputs of current sensors, second input of registration unit is connected to outputs of voltage sensors, first output of registration unit is connected to second input of tuner, second output of registration unit is connected to second input of model of protected network.

EFFECT: higher accuracy of distance protection.

5 cl, 1 dwg