Baselining Study with a Focus on Eastern Interconnection: Interim Report for Event Precursor Study

Synchrophasor technology enables control center operators to monitor power grid dynamics in real-time over a wide-area of an interconnection or the entire interconnection. To make use of synchro-phasor technology and to prevent blackouts, operators need information on normal and abnormal grid performance patterns for a range of key system parameters such as system stress (angle differences), low damped or growing inter-area oscillations, voltage degradation, voltage and angle sensitivities and other parameters so that the operators are alerted to take appropriate mitigating actions. Programs are now available to monitor these dynamic power system metrics in real-time. The Eastern Interconnection Baselining study was initiated to distinguish normal and abnormal parameter ranges that can be expected in real-time operations.