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The proposed controller has been employed to damp low frequency oscillations in power system considering wide range of operating conditions like change in input mechanical power, line loading, change in line reactance with single and multi machine power system. The fuzzy optimized PID controller has been compared with normal optimized PID controller with same optimization techniques to justify its effectiveness. Also the supremacy of PSO-GWO technique has been compared with PSO and GWO techniques by optimizing the gains of fuzzy PID controller. The detailed eigen value analysis and system response prove that proposed fuzzy PID controller is much superior than PID controller and PSO-GWO optimized controller is also superior as compared to PSO and GWO optimized fuzzy PID controllers to damp low frequency oscillations in power system and there by enhancing small signal stability of power system.<\/jats:p>","DOI":"10.3233\/jifs-169606","type":"journal-article","created":{"date-parts":[[2018,7,10]],"date-time":"2018-07-10T14:29:55Z","timestamp":1531232995000},"page":"501-512","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":22,"title":["Enhancement of small signal stability of power system using UPFC based damping controller with novel optimized fuzzy PID controller"],"prefix":"10.1177","volume":"35","author":[{"given":"Narayan","family":"Nahak","sequence":"first","affiliation":[{"name":"Department of Electrical Engineering, Siksha \u2018O\u2019 Anusandhan, Deemed to be University, Bhubaneswar, India"}]},{"given":"Ranjan Kumar","family":"Mallick","sequence":"additional","affiliation":[{"name":"Department of Electrical and Electronics Engineering, Siksha \u2018O\u2019Anusandhan, Deemed to be University, Bhubaneswar, India"}]}],"member":"179","published-online":{"date-parts":[[2018,7,9]]},"reference":[{"key":"e_1_3_2_2_2","unstructured":"PadiyarK.R. 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