Risk assessment of large scale power systems has been an important problem in power system reliability study. Probabilistic technique provides a powerful tool to solve the task. In this paper, we present the results of a study on probabilistic vulnerability assessment on WECC system. Cumulant based expansion method is applied to obtain the probabilistic distribution function (PDF) and cumulative distribution function (CDF) of power flows on transmission lines and voltage. Overall risk index based on the system vulnerability analysis is calculated using the WECC system. The simulation results based on WECC system is used to demonstrate the effectiveness of the method. The methodology can be applied to the risk analysis on large scale power systems.
Revised: August 18, 2010 |
Published: April 30, 2010
Citation
Ma J., Z. Huang, P.C. Wong, and T.A. Ferryman. 2010.Probabilistic Vulnerability Assessment Based on Power Flow and Voltage Distribution. In 2010 IEEE PES Transmission and Distribution Conference and Exposition, 1-8. Piscataway, New Jersey:Institute of Electrical and Electronics Engineers.PNNL-SA-68114.doi:10.1109/TDC.2010.5484304