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US 2013/0155734 A1Published application
Method and system for islanding detection and protection
AssigneeGeneral Electric Company
InventorsSaid Farouk Said El-Barbari, Simon Herbert Schramm, Ara Panosyan
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Abstract
A method and system for detecting an islanding condition in a grid is provided. The method comprises detecting a potential islanding condition in a grid; and, in response to the detected potential islanding condition, ramping up an amount of reactive power, active power, or a combination of active and reactive power that is generated from a power conversion system until the earlier of the power conversion system shutting down or a threshold condition being reached.
Claims19
A method comprising:
- detecting a potential islanding condition in a grid;
- and
- in response to the detected potential islanding condition, ramping up an amount of reactive power, active power, or a combination of active and reactive power that is generated from a power conversion system until the earlier of the power conversion system shutting down or a threshold condition being reached.
A grid protection system comprising:
- a detection unit for detecting a potential islanding condition in a grid;
- and
- a variable ramp rate generation unit for, upon detection of a potential islanding condition, ramping up an amount of reactive power, active power, or a combination of active and reactive power that is generated from a power conversion system until the earlier of the power conversion system shutting down or a threshold condition being reached.
A solar power generation system comprising:
- a power converter for receiving power from a solar power source;
- a detection unit for measuring a line parameter value and using the line parameter value for identifying a potential islanding condition in a grid fed by the a power converter;
- and
- a variable ramp rate generation unit for ramping up an amount of reactive power, active power, or a combination of active and reactive power generated from the power converter in response to an identified potential islanding condition.
1 more element
Dependencies are inferred from the claim text.