Impact of Load Shedding Philosophies on Bulk Electric System Reliability Analysis Using Sequential Monte Carlo Simulation

Authors: Wangdee, Wijarn; Billinton, Roy

Source: Electric Power Components and Systems, Volume 34, Number 3, Number 3/March 2006 , pp. 355-368(14)

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Abstract:

Sequential Monte Carlo simulation can be used to estimate bulk electric system reliability indices by simulating the actual chronological process and random behavior of the system in fixed discrete time steps. The technique consequently provides accurate frequency and duration assessments compared with those obtained using other traditional methods. Delivery point reliability indices obtained using the sequential technique, therefore, can be realistically used to forecast future system reliability performance. Operating policies such as load shedding procedures can have a considerable impact on the predicted reliability indices in a bulk electricity system. This article examines the impact of utilizing different load shedding philosophies in bulk electric system reliability analyses. The results obtained using the developed sequential software show that the adopted load shedding policy has a significant impact on the delivery point indices, but has relatively little impact on the overall system predictive indices. The load shedding philosophy, however, has a considerable impact on the system performance indices. The results obtained using three different load shedding policies are presented and compared using two test systems.

Keywords: bulk electric system (BES); load shedding philosophy; reliability; predictive and performance indices; sequential simulation

Document Type: Research article

DOI: http://dx.doi.org/10.1080/15325000500241266

Affiliations: 1: Power System Research Group, University of Saskatchewan, Saskatchewan, Canada

Publication date: 2006-03-01

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