Voltage risk assessment

This paper describes computational techniques for computing risk associated with voltage insecurity, where risk is assessed as the product of probability and consequence of under-voltage and voltage collapse. In contrast to deterministic assessment of voltage security, our approach directly accounts for uncertainties in the analysis. An approach for operational assessment is provided that uses continuation power flow methods. In addition, a planning approach is described which utilizes an interior point optimization method to identify maximum loading conditions over a sequential trajectory of operating conditions. Analysis of the IEEE Reliability Test System illustrates results that are obtained from the approaches.

[1]  Fernando L. Alvarado,et al.  Sensitivity of the loading margin to voltage collapse with respect to arbitrary parameters , 1997 .

[2]  F. Alvarado,et al.  Computation of closest bifurcations in power systems , 1994 .

[3]  S. Granville,et al.  Application of interior point methods to power flow unsolvability , 1996 .

[4]  V. Ajjarapu,et al.  Invariant subspace parametric sensitivity (ISPS) of structure-preserving power system models , 1996 .

[5]  Venkataramana Ajjarapu,et al.  The continuation power flow: a tool for steady state voltage stability analysis , 1991 .

[6]  Yi Hu,et al.  Engineering foundations for the determination of security costs , 1991 .

[7]  Danny Sutanto,et al.  Application of an optimisation method for determining the reactive margin from voltage collapse in reactive power planning , 1996 .

[8]  Alberto Berizzi,et al.  First and second order methods for voltage collapse assessment and security enhancement , 1998 .

[9]  Roy Billinton,et al.  Probabilistic evaluation of voltage stability , 1999 .

[10]  C. F. Henville,et al.  Summary of "System protection and voltage stability" , 1995 .

[11]  G. C. Ejebe,et al.  Fast contingency screening and evaluation for voltage security analysis , 1988 .

[12]  Ron Allan,et al.  Sequential probabilistic methods for power system operation and planning , 1998 .

[13]  V. Vittal,et al.  Simplification, expansion and enhancement of direct interior point algorithm for power system maximum loadability , 1999 .

[14]  James D. McCalley,et al.  Risk based voltage security assessment , 2000 .

[15]  F. Nozari,et al.  Load modeling for power flow and transient stability computer studies , 1988 .

[16]  V. Ajjarapu,et al.  The sparse formulation of ISPS and its application to voltage stability margin sensitivity and estimation , 1999 .

[17]  J.C.O. Mello,et al.  The effects of voltage collapse problems in the reliability evaluation of composite systems , 1997 .

[18]  Claudio A. Canizares,et al.  Point of collapse and continuation methods for large AC/DC systems , 1993 .

[19]  N. D. Hatziargyriou,et al.  Probabilistic load flow for assessment of voltage instability , 1998 .

[20]  Zhihua Qu,et al.  A new methodology for determining transmission capacity margin in electric power systems , 1991 .

[21]  T.V. Cutsem,et al.  A method to compute reactive power margins with respect to v , 1991, IEEE Power Engineering Review.

[22]  C.S. Indulkar,et al.  Deterministic and Probabilistic Approach to Voltage Stability of Series-Compensated EHV Transmission Lines , 1983, IEEE Transactions on Power Apparatus and Systems.

[23]  M. Brucoli,et al.  A probabilistic approach to the voltage stability analysis of interconnected power systems , 1986 .