Method for inhibiting multiple inverter stations from entering passive control mode in island state
US10218184B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 24, 2015 |
| Grant date | Feb 26, 2019 |
| Priority date | — |
| Expiry date | Mar 31, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J3/388
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method for inhibiting multiple inverter stations from entering a passive control mode in an island state. The method includes dividing inverter stations into groups in advance; a principle for group division is dividing inverter stations whose alternating-current sides are connected to each other through an alternating-current line in a normal running condition into a group; priorities of the inverter stations are preset in each group to tune relevant fixed values of the inverter stations for island detection; a tuning principle is that an inverter station with a higher priority has a more sensitive relevant fixed value, and an island state is more easily detected for the corresponding inverter station; an inverter station for which an island state is detected can enter a passive control mode only when all the other inverter stations with priorities higher than the priority of the inverter station in the group send enabling signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.