Electrical systems and related islanding detection methods
US10320193B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 16, 2016 |
| Grant date | Jun 11, 2019 |
| Priority date | — |
| Expiry date | Sep 15, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E40/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Electrical systems and related operating methods are provided. One exemplary electrical system includes a sensing arrangement coupled to an electrical grid interface to measure an electrical characteristic of the electrical grid interface, a power conversion module having an output coupled to the electrical grid interface, and a control module coupled to the sensing arrangement and the power conversion module. The control module determines an estimated frequency of the electrical characteristic based on a measured value of the electrical characteristic from the sensing arrangement, adjusts a commanded reactive power for the power conversion module to increase a difference between the estimated frequency and a reference frequency, operates the power conversion module in accordance with the adjusted reactive power command, and thereafter initiates a remedial action when the difference between the estimated frequency and the reference frequency exceeds a threshold amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.