Method for detecting insulation damage location in reflux rail of subway/coal mine and transition resistance thereof
US10962605B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 23, 2019 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | Apr 23, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/008
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for detecting an insulation damage location in a reflux rail of a subway/coal mine and a transition resistance thereof includes the following steps: connecting a reflux rail to a negative electrode of a substation, selecting a location at a connecting point as a reference location, and mounting a potential detection apparatus at the reference location; mounting a travel distance detection apparatus and a traction current detection apparatus on a locomotive, traveling, by the locomotive, to the substation along the reflux rail, where the three detection apparatuses send respectively recorded data to a control unit; and determining, by the control unit, a potential jump from received potential data and a corresponding jump time, and determining a running distance of the locomotive at a jump moment and a total running length of the locomotive, so as to determine a ground insulation damage location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.