Northern States Power Company ICCP RealTime Data Access

Northern States Power Company ICCP Real-Time Data Access for Distribution, Transmission, and Generation David Maier NSP Northern States Power Company http: //www. nspco. com/ david. w. maier@nspco. com (612) 330 -6445 George Clemmer Cycle Software, Inc. www. livedata. com gclemmer@livedata. com (617) 576 -6506

Northern States Power • Generation, transmission and distribution • 1. 4 million customers • Minnesota, Twin Cities, Wisconsin, North Dakota, South Dakota, and Michigan

ICCP Background at NSP • Early 1990’s NSP & EPRI research project – Before NERC mandated ICCP – Connected EMS to corporate mainframe – ICCP provided flexibility & performance – Analyses showed long term benefits – NSP planned to increase use • Next NSP installed ICCP from 2 vendors – Field tested for 3 years • Judged ready for production 1996

Distribution • Bring detailed data back to Siemens Distribution Management System (DMS) • Off-the-shelf DMS ICCP option • 5 Live. Data ICCP Servers on Windows NT provide link to Cell. Net radio WAN • Each server certified to support 500 Cap banks and switch controls • 10 -30+ discrete status and measurement values per control - Total 75, 000 points

ICCP Benefits • • • Off-the-shelf non-proprietary protocol Fast and easy to implement Flexible and applicable to requirements Windows NT makes it easy to manage Software updates provide technology advances to meet emerging needs

Substations • Distribution & Transmission substations • Substation automation with Modbus Plus LAN, 984 PLCs, Bitronics Meters • Live. Data ICCP Server runs in Modicon Quantum controller Ethernet module • Off-the-shelf ICCP options in DMS & EMS • Standard for all new substation projects

Generation • Highbridge, Blackdog, & Riverside Plants • Westinghouse WDPF DCS control systems • Westinghouse integrated and delivered Live. Data ICCP Server • Off-the-shelf ICCP link to EMS

Generation • Inver Hills peaking generation station • 6 combustion turbines rated 72 MW winter, 55 MW summer • GE Fanuc controllers & Wonderware operator interface • Live. Data ICCP Server integrated by control vendor • Off-the-shelf ICCP link to EMS

ICCP at NSP Today Routed WAN Live. Data ICCP Server Transmission Substations Capcitor & Switch Controls Cell. Net Radio WAN ICCP Siemens Energy Management System ICCP Siemens Distribution Management System ICCP I C C P Live. Data ICCP Servers Control Center Live. Data ICCP Server Generation Plants Routed WAN Live. Data ICCP Server Distribution Substations

ICCP at NSP Today • ICCP is NSP’s communication interface standard for – external utilities, external marketing entities, power pool types of interfaces – internal emerging business applications. • ICCP for connectivity to other utilities and power plants, as well as to internal systems • NSP has implemented more than 20 discrete instances of ICCP

ICCP Benefits • Increased flexibility and capability • Retrieve more information from substations and distribution automation • Feed data into control center via open, standard protocols • Minimize investment in legacy protocols • Less proprietary, more modular, more easily enhanced over time

ICCP Benefits • Dramatic time savings – adding a new system takes 40 personhours versus the 3 -12 person-months typical of old custom solution approach • With a standardized integration environment, everyone knows ‘the rules’ • System upgrades don’t take the system down