Open AccessRisk based multi‐objective dynamic expansion planning of sub‐transmission network in order to have eco‐reliability, environmental friendly network with higher power quality
Author(s) -
karimi Masoumeh,
Haghifam Mahmoud Reza
Publication year - 2017
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/iet-gtd.2016.0952
Subject(s) - reliability (semiconductor) , reliability engineering , transmission network , quality (philosophy) , order (exchange) , computer science , transmission (telecommunications) , environmentally friendly , power network , power quality , power (physics) , electric power system , engineering , business , telecommunications , physics , quantum mechanics , ecology , philosophy , epistemology , finance , biology
This study suggests a method based on stochastic multi‐objective modelling for optimally timing, siting and sizing of sub‐transmission substationsand medium voltage feeders, distributed generations and capacitors, simultaneously, in order to take more pros of recent developed technologies. Regards to comprehensive impact of uncertainties including: intermittent nature of renewable energy sources, load forecasting and market price errors, some strategies must be devised in order to well incorporate them into the problem. The mentioned problem is modelled by dynamic programming which NSGA‐2 is chosen for optimisation purposes and then fuzzy set theory is applied to find the best compromise solution. The proposed scheme aims to minimise substations expansion and installation cost, medium voltage feeders installation and replacement cost, DG units installation and operation cost, capacitors installation cost, cost of purchased energy from the transmission network, active and reactive power losses cost, and connection cost of sub‐transmission substations to the upstream network. Besides, risk based modelling of energy not‐supplied as an efficient reliability index is incorporated to cost function in order to improve the reliability of the network. Also voltage deviation and voltage stability as the criterion of power quality in distribution networks and emission reduction are treated as independent objective functions.