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Advanced Metering Infrastructure (AMI) systems are becoming the backbone for many exciting Smart Grid capabilities. In response to this, many different vendors are developing AMI systems in parallel, using different technologies and inventing different interfaces between their systems and utility systems.
But inventing interfaces leads to the lack of interoperability across vendor systems. Common, standardized event codes – the alarms and event notifications that indicate the status and problems with meters and AMI systems – are critical for interoperability.
USB saw this lack of interoperability as a major concern as they implemented multiple systems from multiple vendors. They sponsored a team – called the Meter/Headend Event Codes (MHEC) team – to collect, organize, and standardize the event codes. The ANSI C12.19 standard for meters provided a base, but AMI and MDM vendors provided over 500 additional codes!
The USB MHEC team developed a spreadsheet of these event codes, organized them into different domains and subdomains, and created XML-based unique code names. These were presented as “de facto” standards to the AMI/MDM vendors, to the MultiSpeak team, and to the IEC TC57 WG14. These de facto standards are being reviewed and commented on, and will ultimately be standardized through the IEC.
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"Advanced Metering Infrastructure (AMI) systems are becoming the backbone for many exciting Smart Grid capabilities.
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