Patent · US Active

Method and system for condition monitoring electrical equipment

US11300603B2 · kind B2 · utility

0Cited by

0References

24Claims

0Family size

Assignee

ABB Schweiz AG · CH

Inventors

Jiayang Ruan · Beijing, CN
Niya Chen · Beijing, CN
Rongrong Yu · Beijing, CN
Kai Hencken · Bad Kötzting, DE
Joerg Lehmann · Hannover, DE

Key dates

Filing date	Feb 18, 2021
Grant date	Apr 12, 2022
Priority date	—
Expiry date	Feb 18, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG01R31/1272
WIPO fieldMeasurement
WIPO sectorInstruments

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.