Overview
IEC 62056-8-5:2017 is an international standard developed by the International Electrotechnical Commission (IEC) for electricity metering data exchange using the DLMS/COSEM suite. This part of the series focuses specifically on the narrow-band Orthogonal Frequency Division Multiplexing (OFDM) G3-PLC communication profile for neighbourhood networks. It sets requirements for communication profiles based on ITU-T G.9901 (power spectral density specification) and ITU-T G.9903 (narrowband OFDM transceivers for G3-PLC networks), enabling robust and scalable power line communication for smart metering infrastructures. This standard is essential for ensuring interoperability and efficiency in Advanced Metering Infrastructure (AMI) deployments.
Key Topics
-
DLMS/COSEM Communication Profile
Defines how the COSEM object model and DLMS/COSEM application layer are implemented over G3-PLC networks, supporting both decentralized and centralized AMI architectures.
-
G3-PLC Technology
Employs narrow-band OFDM modulation to achieve reliable data transfer over existing low-voltage electricity distribution networks despite interference or noise.
-
Layered Protocol Stack
- Physical Layer: Specifies OFDM on multiple international frequency bands (e.g., CENELEC, ARIB, FCC).
- MAC Layer: Supports secure network association, mesh topology, channel access management, and efficient data handling.
- 6LoWPAN Adaptation Layer: Facilitates data transfer between the MAC and IPv6 network layers, leveraging header compression for efficiency.
- IPv6 Networking: Supports broad IP-based applications and direct communication with Head-End Systems (HES).
- UDP Transport Layer: Uses User Datagram Protocol to ensure simple and flexible data transport.
-
Security and Reliability
The standard outlines the use of secure device association, data integrity methods, and supports robust error correction to maintain reliable meter data exchanges.
-
Network Architecture
Describes roles for Personal Area Network (PAN) coordinators and PAN devices, typical for neighbourhood network deployments in smart grid environments.
Applications
IEC 62056-8-5:2017 is designed for use in smart electricity metering, utility data management, and neighbourhood network communications. Typical practical applications include:
- Advanced Metering Infrastructure (AMI): Enables utilities to collect, process, and manage electricity consumption data from smart meters through existing powerlines.
- Demand Response and Load Control: Supports real-time data exchange needed for grid optimization and consumer-based demand management.
- Remote Metering: Provides utilities with cost-efficient remote reading, facilitating timely and accurate billing, outage detection, and service quality monitoring.
- Interoperability in Multi-vendor Environments: By adhering to open standards, the profile enables seamless integration between devices from different manufacturers within a single neighbourhood network.
Related Standards
IEC 62056-8-5:2017 is closely connected to other standards in metering communication and smart grid networks, such as:
-
IEC 62056 Series:
-
ITU-T Recommendations:
- ITU-T G.9901: Power spectral density for narrowband PLC
- ITU-T G.9903: OFDM PLC transceivers for G3-PLC networks
-
IETF RFCs:
- RFC 2460: IPv6 Specification
- RFC 768: User Datagram Protocol (UDP)
- RFC 4944 and RFC 6282: Adaptation and compression for 6LoWPAN
Implementing IEC 62056-8-5:2017 enhances interoperability, future-proofs smart grid communication investments, and simplifies the integration of advanced data analytics and real-time grid management. This standard is a critical component in the evolution of efficient and secure smart electricity metering networks leveraging narrow-band OFDM G3-PLC technology.
Open preview (PDF)Electricity metering data exchange - The DLMS/COSEM suite - Part 8-5: Narrow-band OFDM G3-PLC communication profile for neighbourhood networks
