For complex power transfer interfaces or load areas with multiple in-feeds, we present a method for phasor-measurement-based calculation of voltage stability margins. In the case of complex transfer paths with multiple injections, a radial system approach may not be sufficient for voltage stability analysis. Our approach provides voltage stability margins considering the full fidelity of the transfer paths. In this paper, we extend a previously proposed phasor-measurement-based approach and apply it to a voltage stability-limited power transfer interface using synchronized phasor measurements from loss-of-generation disturbance events. Previous work employed a simple radial system or modeled a power transfer interface using only one generator. In our approach, we use the PMU data to model multiple external injections that share the power transfer increase, and we employ a modified AQ-bus power flow method to compute the steady-state voltage stability margins. We demonstrate the method using real PMU data from disturbance events in the US Eastern Interconnection.

%B 2014 Power Systems Computation Conference (PSCC) %I IEEE %C Wrocław, Poland %P 1 - 6 %8 08/2014 %R 10.1109/PSCC.2014.7038431 %0 Report %D 2014 %T PMU Location and Study Region Selection %A Joe H. Chow %A Scott G. Ghiocel %K AA13-001 %K synchrophasor applications %K synchrophasors %K voltage stability %B Voltage Stability Applications using Synchrophasor Data %I Rensselaer Polytechnic Institute %8 01/2014 %0 Report %D 2013 %T Development of the Voltage Stability Analysis Framework %A Joe H. Chow %A Scott G. Ghiocel %K AA13-001 %K synchrophasor applications %K synchrophasors %K voltage stability %B Voltage Stability Applications using Synchrophasor Data %I Rensselaer Polytechnic Institute %8 12/2013 %0 Report %D 2013 %T State-of-the-Art Voltage Stability Analysis Survey %A Joe H. Chow %A Scott G. Ghiocel %K AA13-001 %K synchrophasor applications %K synchrophasors %K voltage stability %B Voltage Stability Applications using Synchrophasor Data %I Rensselaer Polytechnic Institute %8 03/2013