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US 12,294,221 B2Granted
Anti-islanding protection and non-exporting tariff support
AssigneeS&C Electric Company
InventorJoseph Matamoros
Life of this patent
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AssigneeS&C Electric Company
InventorJoseph Matamoros
Estimating the term…
A method for preventing unintentional islanding of loop networks when a distributed power source is providing power to the network when network power is lost. The method includes detecting loss of voltage to the network, opening the source side switching device in the transformers nearest both ends of the power line, and detecting that voltage has been restored to the network. Also provided are a system and method for preventing distributed power generation export in a power distribution network during normal operation. The method includes determining the apparent power at the source side of each of the transformers, determining the apparent power at the load side of each of the transformers, comparing the determined apparent powers, and opening the source side and load side switching devices in any transformer where the determined apparent powers are not the same.
A method for preventing distributed power generation export in a power distribution network, said network including a power line, a plurality of transformers electrically coupled to and positioned along the power line, each transformer including a source side switching device and a load side switching device, wherein source power is provided to both ends of the power line and wherein one of the switching devices is a normally open switching device, said method comprising:
A system for preventing distributed power generation export in a power distribution network, said network including a power line, a plurality of transformers electrically coupled to and positioned along the power line, each transformer including a source side switching device and a load side switching device, wherein source power is provided to both ends of the power line and wherein one of the switching devices is a normally open switching device, said system comprising:
Dependencies are inferred from the claim text.