G3-PLC is recommended as one of the communication standards in Japan for a smart meter in HEMS solutions

April 26, 2012 // By Paul Buckley
Maxim Integrated Products’ G3-PLC protocol has been recommended by the Smart House Standardization Study Group, as a communications platform Japanese electrical utilities may use for communication between a smart meter and a home energy management system in home area networks.

The Smart House Standardization Study Group sponsored by Japan ‘s Ministry of Economy, Trade, and Industry ( METI ).

In partnership with Electricité Réseau Distribution France (ERDF) and Sagemcom, Maxim developed the G3-PLC specification to promote open-endedness and interoperability among smart grid implementations. G3-PLC supports the IPv6 Internet protocol to allow new Internet-based energy-management systems. The specification also supports two-way communication for demand response and other smart grid applications. G3-PLC was recently established as an ITU communications standard and used as the basis for the IEEE ® 1901.2 PLC standard. The protocol is already approved for use in neighborhood area network (NAN) and HAN applications in various countries, including the U.S., France, Spain, Taiwan, and the Netherlands.

Testing by Japanese utilities proved that G3-PLC communicates reliably from the meter into the home, even with strong noise on the powerline from home appliances. Additionally, the G3-PLC specification met METI’s key requirements, which included a widely accepted standard that supports the IPv6 Internet protocol.

An important capability of a HEMS system is to provide an in-home display (IHD) of energy consumption and cost information.  IHDs provide real-time information on energy usage and electrical rates, thus enabling energy conservation, especially during peak load periods. METI is encouraging the use of IHDs to help Japan cope with decreased electricity generation when nuclear facilities were closed following the March 11, 2011, tsunami disaster.

“G3-PLC will enable Japanese utilities to design smart grid networks that they can source from multiple manufacturers. It will also let Japanese customers set up next-generation, energy-management control systems in their homes,” said Michael Navid, Executive Business Manager for Maxim’s Powerline Products.

Visit Maxim Integrated Products at www.maxim-ic.com