April 30, 2012, 11:00, Room GC B3 424 (click here for the map)
SCADA and utility management (SCADA-UMS) systems often use multiple, distributed data sources. Thereby, each data source usually needs to be read individually via its specific data access possibilities. This paper presents a solution for centralized and generic access to data from various data sources utilized by a SCADA-UMS system. The solution also offers a possibility of complex filtering data from different sources. The SCADA-UMS system, which this solution is implemented for, is a smart grid software system for monitoring and management of a power distribution network. The implementation of the solution is based on the Generic Data Access (GDA) specification, issued by IEC 61970-403 Ed.1: Energy management system application program interface (EMS-API) - Part 403: Generic data access, final draft, 2008. The main part of the solution is the GDA Smart Proxy component, which behaves as the central data source from the system's point of view. GDA Smart Proxy combines data from existing sources and implements a module for complex filtering.