Voltage Stability Monitoring From a Transmission Bus PMU

This paper examines the problem of monitoring long-term voltage instability from a phasor measurement units installed at any transmission bus. It is shown that the well-known impedance matching condition on a radially connected load bus, as well as the local identification of voltage emergency situations (LIVES) method based on load tap changing transformers can be generalized into a New LIVES Index suitable for any transmission bus feeding a weak area of a system. Results on an IEEE voltage stability test system validate the dependability and security of the new index for the early detection of voltage instability. Moving average, as well as a new filtering method based on short-time Fourier transform are employed to reduce the effect of noise and short-term transients.

[1]  T. Van Cutsem,et al.  Unified sensitivity analysis of unstable or low voltages caused by load increases or contingencies , 2005, IEEE Transactions on Power Systems.

[2]  Anne Kuefer,et al.  Voltage Stability Of Electric Power Systems , 2016 .

[3]  C.D. Vournas,et al.  Tracking maximum loadability conditions in power systems , 2007, 2007 iREP Symposium - Bulk Power System Dynamics and Control - VII. Revitalizing Operational Reliability.

[4]  Reynaldo Nuqui,et al.  On voltage stability monitoring with voltage instability predictors , 2013, 2013 IREP Symposium Bulk Power System Dynamics and Control - IX Optimization, Security and Control of the Emerging Power Grid.

[5]  M. Glavic,et al.  Wide-Area Detection of Voltage Instability From Synchronized Phasor Measurements. Part I: Principle , 2009, IEEE Transactions on Power Systems.

[6]  D. John Morrow,et al.  Online Thévenin Equivalent Determination Considering System Side Changes and Measurement Errors , 2015, IEEE Transactions on Power Systems.

[7]  Leif Warland,et al.  Estimation of Distance to Voltage Collapse: Testing an Algorithm Based on Local Measurements , 2002 .

[8]  Davide Fabozzi,et al.  Dynamic Simulation of Large-Scale Power Systems Using a Parallel Schur-Complement-Based Decomposition Method , 2014, IEEE Transactions on Parallel and Distributed Systems.

[9]  Federico Milano,et al.  Test systems for voltage stability analysis and security assessment , 2015 .

[10]  Costas Vournas,et al.  Application of Local Autonomous Protection Against Voltage Instability to IEEE Test System , 2016, IEEE Transactions on Power Systems.

[11]  Wilsun Xu,et al.  Voltage stability monitoring based on the concept of coupled single-port circuit , 2012, 2012 IEEE Power and Energy Society General Meeting.

[12]  J.B. Allen,et al.  A unified approach to short-time Fourier analysis and synthesis , 1977, Proceedings of the IEEE.

[13]  Jin Jiang,et al.  Time-frequency feature representation using energy concentration: An overview of recent advances , 2009, Digit. Signal Process..

[14]  S. Corsi,et al.  A Real-Time Voltage Instability Identification Algorithm Based on Local Phasor Measurements , 2008, IEEE Transactions on Power Systems.

[15]  Thierry Van Cutsem,et al.  Online Voltage Security Assessment , 2014 .

[16]  S. Grijalva,et al.  Individual Branch and Path Necessary Conditions for Saddle-Node Bifurcation Voltage Collapse , 2012, IEEE Transactions on Power Systems.

[17]  M. Glavic,et al.  Wide-Area Detection of Voltage Instability From Synchronized Phasor Measurements. Part II: Simulation Results , 2009, IEEE Transactions on Power Systems.

[18]  C.D. Vournas,et al.  Local Identification of Voltage Emergency Situations , 2008, IEEE Transactions on Power Systems.