Systems and methods to identify open phases of a capacitor bank
US11808824B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2021 |
| Grant date | Nov 7, 2023 |
| Priority date | — |
| Expiry date | Apr 2, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S10/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and devices are provided for determining the number of open phases and which particular phases may be open in capacitor bank system. Detecting open phases may include determining a neutral current of the capacitor bank system. According to one detection method, in response to a magnitude of the neutral current being greater than a threshold value, an IED may calculate an aggregate power phasor for the phases of the capacitor bank system with respect to each rotation. According to another detection method, in response to the magnitude of the neutral current being greater than a threshold value, an IED may calculate an individual power phasor for each of the phases of the capacitor bank system with respect to each rotation. Based on the magnitude and angles of the power phases, the IED may determine the presence of open phases and which particular phases may be open, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.