公开(公告)号：US20210224599A1

公开(公告)日：2021-07-22

申请号：US17256070

申请日：2019-05-29

Applicant: Hitachi, Ltd.

Inventor： Yoshiyuki TAJIMA ,  Kazuya MONDEN

IPC: G06K9/62 ,  G05B23/02

Abstract: There are provided a device that collects operation data from equipment, and an information processing apparatus that detects an anomaly or an omen of an anomaly of the equipment on the basis of anomaly detection models constructed from the operation data, the information processing apparatus including means for collecting the operation data, means for learning anomaly detection models from the operation data, and means for calculating an anomaly score of respective operation data from the operation data and the anomaly detection models, the means for learning an anomaly detection model in which a dispersion of elements is small among the anomaly detection models. Thus, in an anomaly detection system, when the operation state of equipment is monitored, even if data for performing division of operation states cannot be obtained or even if division cannot be performed correctly, misdetection of an anomaly such as a malfunction or a failure or an omen of an anomaly can be decreased and the state of the system can be evaluated correctly.

公开(公告)号：US20230387685A1

公开(公告)日：2023-11-30

申请号：US18027751

申请日：2020-11-27

Applicant: Hitachi, Ltd.

Inventor： Nao SAITO ,  Norihiko MORIWAKI ,  Hideki HAYASHI ,  Masato UTSUMI ,  Kazuya MONDEN ,  Yusuke SHOMURA ,  Toshiaki SUZUKI ,  Yoshikazu ISHII ,  Mingyu JO

IPC: H02J3/00 ,  H02J3/38

CPC classification number: H02J3/003 ,  H02J3/381 ,  H02J2310/58 ,  H02J2300/24 ,  H02J2203/10

Abstract: An energy management controller (1) includes a virtual grid generating unit (110) that for each of grids, generates a virtual grid that collectively manages information including information on an energy resource and a wire, in order to carry out efficient power management, and a deal management unit (150) that based on the generated virtual grid, manages a power deal with a consumer-side supplied with power from the energy resource. The energy management controller (1) further includes an RE coloring unit (132) that classifies power by coloring to allow power deals based on RE coloring.