Abstract

During the summer 2011, two forced outages occurred on power lines in British Columbia (BC) Hydro system. Market conditions and generation pattern stressed the power network in operations and additional generation shedding was required. Contingency Analysis tool in SCADA (Supervisory Control And Data Acquisition)/EMS (Energy Management System) system was used in order to determine the additional generation shedding and it provided security to the parallel paths to mitigate overload impacts for next contingencies. The purpose of this paper is to share BC Hydro experience during this scenario and how Contingency Analysis in SCADA/EMS system supported the operation.

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