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Smart grid communications solutions provider GridEdge Networks Inc. has concluded a research and development (R&D) project to create a grid protection system for transfer trip distributed generation protection systems. The R&D project was completed in partnership with Western Massachusetts Electric Co., a subsidiary of Northeast Utilities.

According to GridEdge, two years of joint venture development and testing have culminated in a transfer trip deployment in Springfield, Mass. The company says that the power line communications (PLC) technology has been specifically customized to provide a solution for the necessary protection of a distributed generation facility.

The distributed generation transfer trip protection (DG-TTP) system, GridEdge notes, is required for most utility-scale energy generators (e.g., solar and wind) that directly attach to the distribution grid. The PLC option provides grid protection in situations of unintentional islanding by detecting the condition and disconnecting the energy generation facility within two seconds, as required by the criteria established in the IEEE-1547 regulatory standard, the company adds.

The PLC solution features relatively low lifecycle costs and a fast installation process, GridEdge reports. In addition, the company says the PLC technology can be installed on the existing energized primary lines and requires minimal ongoing maintenance.

GridEdge is launching the DG-TTP product this month.


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