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access icon free Integration of renewable energy sources in dynamic economic load dispatch problem using an improved fireworks algorithm

© The Institution of Engineering and Technology
Received 18/11/2017, Accepted 03/04/2018, Revised 06/02/2018, Published 06/04/2018

In electrical power system, economic load dispatch is a generic operation for optimal sharing of generation units to meet the system load. With the rapid development of the renewable infrastructure and wide encouragement for green energy have emerged hybrid generating systems in power systems. However, there continuous ever-increasing production is creating challenges as well as implicating economic factor also in operation. A collective cost function is considered with the conventional thermal generators along with the consideration of renewable energy sources to envisage the economic factor. For these renewable sources, like wind and solar, the proportional cost, their uncertainty and variability by overestimation and underestimation cost are considered. To achieve this economic day-ahead scheduling, dynamic operation in time scale of 1 h interval is performed. The stochastic nature of wind and solar is modelled by Weibull and Beta distributions, respectively. Moreover, economic optimisation is obtained by a newly developed algorithm called improved fireworks algorithm with non-uniform operator (IFWA-NMO). This introduces adaptive dimension strategy, limiting mapping operator and non-uniform operator. The effectiveness of proposed IFWA-NMO is investigated on standard dynamic economic load dispatch (DELD) system and also employed to solve conventional DELD with wind-solar system.

Inspec keywords: power generation scheduling; power generation dispatch; wind power plants; power generation economics; load dispatching; renewable energy sources; costing; hybrid power systems; optimisation

Other keywords: power systems; underestimation cost; overestimation; electrical power system; hybrid generating systems; green energy; optimal sharing; wind-solar system; dynamic economic load dispatch problem; renewable energy sources; generation units; generic operation; renewable infrastructure; economic factor; proportional cost; mapping operator; dynamic operation; conventional thermal generators; economic day-ahead; newly developed algorithm; wide encouragement; improved fireworks algorithm; time 1.0 hour; collective cost function; nonuniform operator; economic optimisation; renewable sources; standard dynamic economic load dispatch system; system load

Subjects: Power system management, operation and economics; Optimisation techniques; Optimisation techniques

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