Method and apparatus for determining phase locking of critical arc light
US11973333B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2023 |
| Grant date | Apr 30, 2024 |
| Priority date | — |
| Expiry date | Feb 6, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/222
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for determining phase locking of critical arc light includes: step 1: monitoring and collecting light radiation intensity of an arc inside a switch cabinet in real time, and converting the collected light radiation intensity into an electrical signal; step 2: extracting a power-frequency fundamental wave of the electrical signal, comparing an amplitude of the power-frequency fundamental wave of the electrical signal with a first threshold, and generating a pre-warning signal based on a comparison result of the first threshold; step 3: comparing the amplitude of the power-frequency fundamental wave of the electrical signal with a second threshold voltage, and generating a control signal based on a comparison result of the second threshold voltage and a protection time threshold; and step 4: protecting the switch cabinet under the critical arc light environment based on the pre-warning signal and the control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.