公开(公告)号：US20200003822A1

公开(公告)日：2020-01-02

申请号：US16458958

申请日：2019-07-01

Applicant: ABB Schweiz AG

Inventor： Yannick Maret ,  Kai Hencken ,  Stefano Marano

IPC: G01R31/12

Abstract: A method and device for determining partial discharge in an electrical insulation system of a medium- or high voltage apparatus is disclosed with: detecting, with a sensing unit, an electrical signal that comprises partial discharge pulses due to dielectric breakdowns in the electrical insulation system of the medium- or high voltage apparatus; generating an in-phase and a quadrature-signal from the electrical signal comprising the partial discharge pulses in an I/Q-mixer unit by mixing the electrical signal including the partial discharge pulses with two local oscillator signals having the same frequency and a phase difference of 90°; filtering each of the in-phase and the quadrature signals with a low-pass filter; processing the filtered in-phase and the quadrature signals in a processing unit with a low-frequency Analog-Digital converter to obtain digital signals representing an in-phase and a quadrature value.

公开(公告)号：US20240384976A1

公开(公告)日：2024-11-21

申请号：US18663248

申请日：2024-05-14

Applicant: ABB Schweiz AG

Inventor： Gerd Schlottig ,  Lorenzo Privitera ,  Kai Hencken ,  Wojciech Wysocki ,  Bartlomiej Adamczyk

IPC: G01B7/16 ,  G01K1/143 ,  H01G4/33 ,  H01M10/48

Abstract: A method for estimating a present quality of the energy storage device comprises measuring a first length change of a first surface of the energy storage device; measuring a temperature and/or a second length change of a second surface of the energy storage device; and estimating the present quality of the energy storage device based on the first length change combined with the temperature and/or the second length change of the energy storage device.

公开(公告)号：US20230341453A1

公开(公告)日：2023-10-26

申请号：US18345009

申请日：2023-06-30

Applicant: ABB Schweiz AG

Inventor： Kai Hencken ,  Holger Kaul ,  Jörg Gebhardt ,  Yannick Maret ,  Andrej Krivda

IPC: G01R31/12 ,  G01R31/327 ,  G01S11/16

CPC classification number: G01R31/1209 ,  G01R31/3271 ,  G01S11/16

Abstract: A detection system for detecting an electrical discharge in an electrical apparatus includes a first sensing device that senses an acoustic wave and an electromagnetic wave and generates a first combined signal. A signal processing device processes the first combined signal and determines the occurrence and properties of an electrical discharge.

公开(公告)号：US11726131B2

公开(公告)日：2023-08-15

申请号：US17380313

申请日：2021-07-20

Applicant: ABB Schweiz AG

Inventor： Kai Hencken ,  Holger Kaul ,  Jörg Gebhardt ,  Yannick Maret ,  Andrej Krivda

IPC: G01R31/327 ,  G01R31/12 ,  G01S11/16

CPC classification number: G01R31/1209 ,  G01R31/3271 ,  G01S11/16

Abstract: The present disclosure provides a detection system that includes a first sensing device configured for sensing an acoustic wave and an electromagnetic wave and generating a first combined signal and a signal processing device configured to determine the occurrence and properties of an electrical discharge.

公开(公告)号：US11719737B2

公开(公告)日：2023-08-08

申请号：US17314140

申请日：2021-05-07

Applicant: ABB Schweiz AG

Inventor： Jörg Gebhardt ,  Holger Kaul ,  Kai Hencken

IPC: G01R31/327 ,  G01R31/12 ,  H04R1/04 ,  H04R1/28 ,  H04R19/01

CPC classification number: G01R31/1209 ,  G01R31/3271 ,  H04R1/04 ,  H04R1/2884 ,  H04R19/01 ,  H04R2201/003

Abstract: A sensing arrangement for detection of electrical discharges in an electrical apparatus is described. The sensing arrangement includes an acoustic sensor and a signal enhancing structure with a funnel region. The acoustic sensor is positioned outside the funnel region on an apex side of the funnel region. An electrical switchgear is described. The electrical switchgear includes a sensing arrangement for detection of electrical discharges in an electrical apparatus. The sensing arrangement includes an acoustic sensor and a signal enhancing structure with a funnel region.

公开(公告)号：US20210199707A1

公开(公告)日：2021-07-01

申请号：US17178521

申请日：2021-02-18

Applicant: ABB Schweiz AG

Inventor： Jiayang Ruan ,  Niya Chen ,  Rongrong Yu ,  Kai Hencken ,  Joerg Lehmann

IPC: G01R31/12

Abstract: A method and system for condition monitoring electrical equipment includes detecting partial discharge impulses generated in the electrical equipment for at least one power cycle; obtaining first data representing the detected partial discharge impulses for the at least one power cycle; obtaining second data by phase-resolving the first data; obtaining third data by regularizing the second data; analyzing the third data into a first component and at least one second component; obtaining phase information of the first component; shifting the first component and the at least one second component in consideration of the obtained phase information; and generating a signal indicating a health state of the electrical equipment by comparing the shifted first and second components of the third data with their counterparts associated with an unhealthy electrical equipment.