Journal
IET GENERATION TRANSMISSION & DISTRIBUTION
Volume 10, Issue 14, Pages 3580-3596Publisher
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/iet-gtd.2016.0333
Keywords
gradient methods; search problems; environmental economics; load dispatching; power transmission economics; load flow; power system security; power generation dispatch; power generation economics; Pareto optimisation; practical multiarea biobjective environmental economic dispatch; hybrid gradient search method; improved Jaya algorithm; generation dispatch decision making; centralised wholesale electricity market; transmission system; highly-interconnected structure; power grid; energy pricing; valve-point effect; multiple fuel option; disjoint prohibited zone; up-down ramp rate requirement; spinning reserve constraint; combinatorial hard problem; optimisation toolset; transmission interface power flow; security constraint; fuel combustion emission calculation; near-global Pareto-optimal solution
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Funding
- EPSRC [EP/K036173/1, EP/G055211/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K036173/1, EP/G055211/1] Funding Source: researchfish
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Generation dispatch decision making integrated into a centralised wholesale electricity market has been always a challenging concern for transmission system operators. The reason lies mainly in the complex and highly-interconnected structure of the grid, escalated demand, and the crisis of the amount and price of energy. For the dispatch solutions to be highly reliable with an acceptable level of accuracy, several factors need to be taken into account, among which one can mention the valve-point effect, multiple fuel options, disjoint prohibited zones, up/down ramp rate requirements of units, as well as the spinning reserve constraints which, in turn, intensify the non-smoothness, non-convexity, non-linearity, and dynamic restriction of such combinatorial problems. This study proposes a new optimization toolset for the bi-objective multi-area economic dispatch problem to determine the transmission power flow and power output of units while satisfying system demand and security constraints at each area. The proposed architecture builds on an improved gradient-based Jaya algorithm to generate a feasible set of Pareto-optimal solutions corresponding to the operation cost and emission calculated through a new robust bi-objective gradient-based method. The projected algorithm is proved to be capable of finding the robust global or near-global Pareto solutions fast and accurate.
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