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Junfang Li
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Latin Hypercube Sampling with Evolutionary Algorithm for Static Security Risk Assessment Junfang Li
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 1: January 2014
Publisher : Institute of Advanced Engineering and Science

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Abstract

Due to correlation coefficient matrix of initialized samples are not always positive definite, this paper presents the improved Latin Hypercube Sampling (LHS) methods with Evolutionary Algorithm (EA) to control correlation and handle power system probability analysis problem. To deal with the non-positive definite correlation matrix, an improved median Latin hypercube sampling with evolutionary algorithm (EA) called MLHS-EA into Monte Carlo simulation is proposed and investigated using IEEE 118-bus system with wind farms. This paper also discusses the misunderstandings about the non-positive definite correlation matrix and application of LHS in power system probabilistic analysis. With the proposed method in this paper, the correlation can be controlled more effectively than previous LHS methods. The accuracy of LHS for the static security assessment can also be improved further for solving the probabilistic analysis problem in power system. The effectiveness of the method is validated with the Matlab simulation results.DOI : http://dx.doi.org/10.11591/telkomnika.v12i1.2729
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