Abstract
Optimization of modes of electrical networks provides for the determination of rational values of reactive powers of controlled sources, voltages of reference nodes and transformation coefficients of adjustable loop transformers, at which the minimum costs associated with the production, transmission and distribution of electricity are ensured and all the specified operating and technological constraints are met. As a result of a lot of work performed by specialists from all over the world on the development of methods and algorithms for optimization the modes of electrical networks, at present, the methods for optimization of reactive powers and voltages of nodes are quite developed. At the same time, the algorithms for optimization of transformation coefficients of transformers, taking into account the provision of permissible voltage levels and minimum energy losses in closed electric networks by ensuring the optimal distribution of power flows in them, requires corresponding improvement. In this regard, this work proposes a new algorithm for optimization of modes of electrical networks on transformation coefficients of adjustable loop transformers. The results of researched the effectiveness of the proposed algorithm are presented.
Highlights
The goal of the optimization problem for electrical networks modes is to determine the optimal values of all adjustable parameters - reactive powers or voltages of nodes with reactive power sources, transformation coefficients of adjustable transformers in the range of permissible modes
This paper proposes the algorithm for optimization of modes of electrical networks on transformation coefficients of adjustable loop transformers, which reduce losses in electrical networks to a minimum by ensuring optimal power flows at the area of permissible modes
A new effective algorithm for optimization of modes of electrical networks on transformation coefficients of adjustable loop transformers is proposed. It allows to reliably determine the optimal complex transformation coefficients of loop transformers taking into account all types of operating and technological limitations
Summary
The goal of the optimization problem for electrical networks modes is to determine the optimal values of all adjustable parameters - reactive powers or voltages of nodes with reactive power sources, transformation coefficients of adjustable transformers in the range of permissible modes. Evaluation of effectiveness of using this interesting algorithm for optimization of modes of complex-closed electrical networks, from our point of view, may encounter difficulties in taking into account functional constraints in the form of inequalities in the calculation process. The work [10] describes an algorithm for optimization the mode of an electrical network based on minimization of losses in closed networks by opening the circuits and compensating for reactive power. The algorithm given in [11] provides for the selection of optimal transformation coefficients of transformers according to the criterion of ensuring admissible voltage levels at consumers This algorithm cannot be directly used to minimize losses in electrical networks. The issues of improving of algorithms for optimization the modes of closed electrical networks on transformation coefficients of adjustable transformers, taking into account all types of operating and technological constraints, remain as a important problem. This paper proposes the algorithm for optimization of modes of electrical networks on transformation coefficients of adjustable loop transformers, which reduce losses in electrical networks to a minimum by ensuring optimal power flows at the area of permissible modes
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