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Solution of large-scale security constrained optimal power flow by a new bi-level optimisation approach based on enhanced gravitational search algorithm
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Solution of large-scale security constrained optimal power flow by a new bi-level optimisation approach based on enhanced gravitational search algorithm
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Journal Article
Solution of large-scale security constrained optimal power flow by a new bi-level optimisation approach based on enhanced gravitational search algorithm
2013
Overview
Security constrained optimal power flow (SCOPF) is a key operation function for modern power systems. In this study, a new bi-level optimisation approach is proposed to solve this problem considering a comprehensive SCOPF model, including, for example, valve loading effect, multi-fuel option and prohibited operating zone constraints of thermal units as well as AC network modelling and AC security constraints. Economic dispatch is solved in the lower level of the proposed approach and using its results as the initial solution, SCOPF is solved in the upper level with high convergence rate. For the both levels, a new enhanced gravitational search algorithm is suggested as the optimisation tool. The proposed bi-level approach is tested on 9-bus, IEEE 57-bus, IEEE 118-bus, IEEE 300-bus and polish 2746-bus test systems. Obtained results from the proposed approach for the test cases are compared with the results of other SCOPF solution methods and published literature figures. These comparisons confirm the validity of the developed approach.
Publisher
The Institution of Engineering and Technology,Institution of Engineering and Technology,The Institution of Engineering & Technology
Subject
/ bilevel optimisation approach
/ Electrical engineering. Electrical power engineering
/ Electrical power engineering
/ enhanced gravitational search algorithm
/ Exact sciences and technology
/ large‐scale security constrained optimal power flow
/ Operation. Load control. Reliability
/ SCOPF
/ Security
/ valves
