DMS Real-Time Power Flow in Distribution Power System of Iberdrola

摘要

Distribution Management System (DMS) at the Iberdrola control center in Bilbao (Spain) was commissioned on-line in December of 2003. The project consisted of a full revitalization of SCADA and its applications systems including Transmission (400, 220 and 132 kV) and Distribution. The DMS area controls approximately fifteen hundred distribution feeders with voltage levels of 66 kV, 30 kV and 13.8 kV. The feeders are configured radially and are weakly meshed with higher voltage feeders, which supply the lower voltage feeders (cascaded topology). In addition, Distribution Systems Real-Time Power Flow (DRTPF) has been in the commissioning phase from December of 2003. The other five control centers of Iberdrola are currently implementing the same DMS. Closely integrated with SCADA, DRTPF serves as a tool to monitor normal and contingency conditions in the distribution power system. DRTPF runs both periodically for the whole system (needing less than 2 minutes) and in trigger mode, responding to changes in topology. DRTPF is also executed on demand both in real-time and in study modes. The demand mode is used by the operators in planning switching operations, especially when the supply alternatives push the equipment (lines, transformers) to the limit, or when parallel/loop topology is created or interrupted. In addition, DRTPF serves as the base for other network application (Volt/VAR Control and Optimal Feeder Reconfigurations).