The newly revised ANSI C12.19 and its application across the utility enterprise

Abstract

ANSI C12.19, Utility Industry End Device Data Tables, defines the data model for electricity meters, and was last revised in 1997. Since that time, many manufacturers have moved to producing solid-state electricity meters with advanced measurement capabilities far beyond those represented in 1997. In addition, utilities have been pushed to recover more and more data about their energy delivery, which is seen in the advanced metering requirements stated in the Energy Policy Act of 2005. This paper analyzes the improvements and extensions to the 1997 published standard in the context of the system requirements that utilities are presently facing. These include requirements to handle data associated with modem communications, extended measurement sources, load control and pricing, network and relay control, power quality (quality of service), and one-way devices. Also discussed is the ability for utilities to leverage the so-called user-defined tables and extended user-defined tables to perform streamlined meter data (energy and demand, in particular) retrieval. Finally, the ability to generate a machine-usable version of the standard in XML will be put into the context of its usefulness in developing cross-vendor applications.