Swiss TSO experience with an ac security-constrained optimal power flow application for real-time security management

Swissgrid (the Swiss TSO) introduced a new framework for real-time network security management supported by three main pillars: a) a revised operational planning procedure; b) a near real-time decision support tool performing an unambiguous optimal redispatch of power plants based on an AC security-constrained optimal power flow (AC-SCOPF); and c) a financial incentive for power plants involved in these redispatch procedures. This paper outlines these main concepts and describes in detail the practical aspects of the used AC-SCOPF tool. These new procedures and tool are in operation since early 2013. The paper also describes the main challenges faced during the AC-SCOPF tool integration into the Swissgrid operations.