%0 Electronic Chapter %T Optimal power flow in distribution networks %K metaheuristic methods %K distributed generation penetration %K generalized approach %K distribution networks %K multiobjective optimization %K OPF analysis %K DG units %K optimal power flow %B Metaheuristic Optimization in Power Engineering %D 2018 %I Institution of Engineering and Technology %P 297-335 %R doi:10.1049/PBPO131E_ch9 %S Energy Engineering %U https://digital-library.theiet.org/;jsessionid=4ll9mgh93orp3.x-iet-live-01content/books/10.1049/pbpo131e_ch9