Title:
METHOD OF IDENTIFYING A SHORT-CIRCUIT LIKE EVENT IN A CIRCUIT BREAKER
Document Type and Number:
WIPO Patent Application WO/2024/073929
Kind Code:
A1
Abstract:
Described is a method of identifying a short-circuit (SC) like event in a circuit breaker (CB). The method comprises sampling an incoming current to the CB to determine a maximum value of a slope of a curve of the incoming current. The method includes sampling the incoming current again before a level of the incoming current reaches a predetermined, preset, selected, or calculated SC threshold value THSC for the CB. The method involves determining from the sampled incoming current that a value of the slope of the incoming current has changed from its maximum slope value to a lower slope value to thereby determine that the incoming current is indicative of a SC like event and does not comprise a real SC event.
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Inventors:
LI XIN (CN)
TSANG KWONG YIN (CN)
LI QINGCHUN (CN)
LI TIN HO (CN)
TSANG KWONG YIN (CN)
LI QINGCHUN (CN)
LI TIN HO (CN)
Application Number:
PCT/CN2022/135937
Publication Date:
April 11, 2024
Filing Date:
December 01, 2022
Export Citation:
Assignee:
HONG KONG APPLIED SCIENCE & TECH RESEARCH INST CO LTD (CN)
International Classes:
G01R31/327; G06F17/00
Foreign References:
| CN111049099A | 2020-04-21 | |||
| CN105680677A | 2016-06-15 | |||
| CN106199145A | 2016-12-07 | |||
| CN109066608A | 2018-12-21 | |||
| CN114217242A | 2022-03-22 | |||
| US20200244157A1 | 2020-07-30 |
Attorney, Agent or Firm:
IDEA INTELLECTUAL (SHENZHEN) IP AGENCY (CN)
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