Background to Sintef project Network models for EMS 1 Applications - PowerPoint PPT Presentation

Background to Sintef project ”Network models for EMS” 1

Applications Network model (State estimator) � Today: 220-400 kV in Sweden. Some of 400 kV in Finland and • Sealand. 70-130 kV in North and South of Sweden Future: 220-400 kV i Nordel system and 70-130 kV in Sweden • PNA (Power network application) � PNA forecast, Optimal Power Flow, Contingency analysis • Uses State estimator. • Spica (Voltage collapse program) � Uses state estimator • reduced equivalents from PSS/E • Aristo (training simulator) � rough equivalents of neighbouring countries • 2

Project Dynamic models: � Make a equivalent model of neighbouring countries • Use in PNA and Aristo (training simulation) • Start/stop of generators � To distribute the production plan in an specific area • Use in PNA Forecast for a online analyses • Use in Spica/Aristo for offline simulations • 3

Main reasons Not feasible to have full observable of the entire � system Reduced number of nods – lesser maintenance - faster � calculations Tools to make the analysis easier � Make a more realistic production balance for the � Forecast program 4