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Nonlinear characteristics of thermal generators is considered in the problem. Weibull distribution is used for determining the uncertainness in availability of wind power and Lognormal PDF is employed for calculating the availability of solar power. The efficacy, robustness and supremacy of the two-step BBO-BOA (hBBO-BOA) technique, compared to various other approaches in literature, are demonstrated by the simulation results. The outcome is quite inspiring, indicates that proposed hBBO-BOA is an efficient approach in order to solve different ELD problems.<\/jats:p>","DOI":"10.4018\/ijsir.2020100102","type":"journal-article","created":{"date-parts":[[2020,9,2]],"date-time":"2020-09-02T10:58:43Z","timestamp":1599044323000},"page":"24-60","source":"Crossref","is-referenced-by-count":6,"title":["Renewable Energy-Based Economic Load Dispatch Using Two-Step Biogeography-Based Optimization and Butterfly Optimization Algorithm"],"prefix":"10.4018","volume":"11","author":[{"given":"Subham","family":"Kundu","sequence":"first","affiliation":[{"name":"Kalyani Governmennt Engineering College, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3433-5808","authenticated-orcid":true,"given":"Provas Kumar","family":"Roy","sequence":"additional","affiliation":[{"name":"Kalyani Government Engineering College, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1102-5636","authenticated-orcid":true,"given":"Barun","family":"Mandal","sequence":"additional","affiliation":[{"name":"Kalyani Government Engineering College, India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2432","reference":[{"key":"IJSIR.2020100102-0","doi-asserted-by":"publisher","DOI":"10.1016\/j.renene.2016.05.012"},{"key":"IJSIR.2020100102-1","doi-asserted-by":"publisher","DOI":"10.1016\/j.eswa.2009.12.084"},{"key":"IJSIR.2020100102-2","doi-asserted-by":"publisher","DOI":"10.1016\/S0142-0615(01)00063-1"},{"key":"IJSIR.2020100102-3","doi-asserted-by":"publisher","DOI":"10.1016\/j.eswa.2018.08.051"},{"key":"IJSIR.2020100102-4","author":"S.Arora","year":"2018","journal-title":"Butterfly optimization algorithm: a novel approach for global optimization"},{"key":"IJSIR.2020100102-5","unstructured":"Bai, W., & Lee, Y. 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