公开(公告)号：US20240310425A1

公开(公告)日：2024-09-19

申请号：US18281822

申请日：2022-03-23

Applicant: HITACHI, LTD.

Inventor： I KYU ,  Shigeki KATAYAMA ,  Hiromichi YAMADA

IPC: G01R31/12 ,  G01R31/14

CPC classification number: G01R31/1272 ,  G01R31/14

Abstract: Provided is an insulation degradation diagnosis apparatus that performs an insulation degradation diagnosis based on a partial discharge signal of an insulator, the device including: a characteristic diagram creation unit configured to create a φ-q-n characteristic diagram of a partial discharge signal of an insulator to be determined; an image creation unit configured to create a φ-q-n image having each pixel value based on each numerical value of a φ-q-n characteristic diagram; and a diagnosis unit configured to make a diagnosis on a presence or occurrence state of partial discharge in the insulator to be determined, using an insulation degradation diagnosis model which is created by learning a φ-q-n image having each pixel value based on each numerical value of a φ-q-n characteristic diagram of a partial discharge signal of an insulator for learning as training data associated with a presence or occurrence state of partial discharge.