Leakage current detection circuit, high voltage direct current system, and detection method and apparatus
US10168376B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2016 |
| Grant date | Jan 1, 2019 |
| Priority date | — |
| Expiry date | Apr 26, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/0092
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A leakage current detection circuit includes a first resistor located on a positive direct current bus, a second resistor located on a negative direct current bus, and a detection processing circuit separately connected to the first resistor and the second resistor, where the first resistor and the second resistor are located on a trunk circuit in a system including the positive direct current bus, the negative direct current bus, and a load, and the detection processing circuit is configured to detect a current flowing through the first resistor, detect a current flowing through the second resistor, and determine a difference between the current flowing through the first resistor and the current flowing through the second resistor as a leakage current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.