公开(公告)号：US11870235B2

公开(公告)日：2024-01-09

申请号：US17043126

申请日：2019-01-14

Applicant: LS ELECTRIC CO., LTD.

Inventor： Ji-Ung Kim

IPC: H02H1/06 ,  G01R1/20 ,  G01R19/25 ,  H02H3/06 ,  H02H5/12 ,  H02H3/24

CPC classification number: H02H1/06 ,  G01R1/20 ,  G01R19/2513 ,  H02H3/063

Abstract: Disclosed are a self-power relay and a method for preventing a malfunction thereof. The self-power relay comprises: a self-power generation unit for autonomously generating a driving power by performing conversion into a preconfigured driving power level by using, as a source power, a system power of a transmission/distribution line or power system; and a relay operation unit, for measuring the amount of a system power of a transmission/distribution line or power system, blocking a system power transmitted to a load when a failure occurs, and monitoring a change in a source power of the self-power generation unit in real time, so as to stop a relay operation of the self-power generation unit and a relay operation of the relay operation unit itself when abnormality occurs, wherein a malfunction can be prevented by checking an unstable state of a source current and voltage for generation of a self driving power.