{"title":"Genetic Algorithm Based Design of Fuzzy Logic Power System Stabilizers in Multimachine Power System","authors":"Manisha Dubey, Aalok Dubey","volume":42,"journal":"International Journal of Electrical and Computer Engineering","pagesStart":980,"pagesEnd":988,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/11326","abstract":"This paper presents an approach for the design of\r\nfuzzy logic power system stabilizers using genetic algorithms. In the\r\nproposed fuzzy expert system, speed deviation and its derivative\r\nhave been selected as fuzzy inputs. In this approach the parameters of\r\nthe fuzzy logic controllers have been tuned using genetic algorithm.\r\nIncorporation of GA in the design of fuzzy logic power system\r\nstabilizer will add an intelligent dimension to the stabilizer and\r\nsignificantly reduces computational time in the design process. It is\r\nshown in this paper that the system dynamic performance can be\r\nimproved significantly by incorporating a genetic-based searching\r\nmechanism. To demonstrate the robustness of the genetic based\r\nfuzzy logic power system stabilizer (GFLPSS), simulation studies on\r\nmultimachine system subjected to small perturbation and three-phase\r\nfault have been carried out. Simulation results show the superiority\r\nand robustness of GA based power system stabilizer as compare to\r\nconventionally tuned controller to enhance system dynamic\r\nperformance over a wide range of operating conditions.","references":"[1] F.P. Demello and C. Concordia, \"Concept of synchronous machine\r\nstability as affected by excitation control\", IEEE Transactions on Power\r\nApparatus and System, Vol. 88, 1969, pp 316-329.\r\n[2] E.V. Larsen and D.A. Swann, \" Applying Power System Stabilizers\",\r\nPart I-III\", IEEE Trans, PAS Vol. 100, No 6, 1981, pp 3017-3046.\r\n[3] P. 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Agnihotri and Pankaj Gupta, \" Optimal\r\ntuning of parameters of fuzzy logic power system stabilizer, \" WSEAS\r\nTransactions on Systems\", Issue 3, Vol.4, March 2005, pp.225- 232.\r\n[17] Manisha Dubey, \"Genetic Algorithm based Tuning of Fuzzy Logic\r\nDamping Controller for Multimachine Power System\",2nd Indian\r\nInternational Conference on Artificial Intelligence-IICAI-05, ,December\r\n20-22, pp.5-15 at NIA, Pune.\r\n[18] Manisha Dubey, Nikos E. 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