The G3-PLC protocol is a transmission protocol for narrowband powerline( NB-PLC) developed by Maxim, which has been recognized as a standard by the International Telecommunication Union( ITU) for communication in smart grids. It is also considered by the standardization bodies of IEEE, the International Electrotechnical Commission( IEC) and the International Standards Organization( ISO).
G3-PLC is an open protocol for fast, secure and effective communication in smart grids, based on Orthogonal Frequency Division Multiplex( OFDM) and ensuring interoperability of different vendor components. It operates in narrowband powerline (NB-PLC) and is compliant with the FCC's extended frequency band of 10 kHz to 490 kHz. G3-PLC supports the IP protocol in the IPv6 version and thus creates the prerequisites for data exchange between smart meters and the control centers of the energy suppliers via the Internet. The 128-bit Advanced Encryption Standard( AES) ensures the security ofdata transmission.
The G3-PLC protocol works according to the demand response method, in which the Meter Data Management System( MDMS) makes a request to the Automated Meter Management( AMM), which then responds to the request. It should be noted that "demand" means the need for energy from the power distribution system, and "response" means the customer's consumption behavior. The protocol can be used in all energy generating and consuming systems. In smart grids and smart grid management, in automated meter management (AMM), in smart meters in the in-house area, for example, for power generation by photovoltaic systems or battery charging of traction batteries in electric vehicles.
The further development and market penetration of the G3-PLC protocol is being driven by the G3-PLC Alliance.