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A voltage sensitivity study on a power transfer path using synchrophasor data

This paper uses synchrophasor measurements on a power transfer interface in the US Eastern Interconnection (EI) to develop voltage sensitivities with respect to increases in transfer flow. The disturbance event considered in this analysis involved a sudden loss of generation, resulting in increased flows on lines close to the disturbance location. The increased flow would immediately cause the bus voltages on the transfer path to drop. With high sampling rate synchrophasor data, the voltage and power flow relationship on a power transfer interface would form a segment of the familiar PV-curve. This paper uses phasor measurements from a disturbance event in the EI to develop a Thevenin equivalent circuit and evaluate the voltage sensitivity with respect to power transfer using this reduced model.