Determination of rational transformation coefficients of transformers distribution networks

Akhmetbayev, Dauren; Akhmetbayev, Arman; Aidarova, Aigerim

doi:10.1051/e3sconf/20172504003

Cited by 10 publications

(5 citation statements)

References 1 publication

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“…Suppose that the desired voltages on the buses of transformer substations, switched on for the first time by n nodes of a complex electrical network, are provided by changes in the transformation ratios of transformers. Then the nonlinear matrix equation (2), after simple transformations, will be written in the form of a voltage balance, for example, for the i-th node [17]: , ,..., n K K K -transformation ratios of transformers;…”

Section: Modelling Transformation Ratios Of Transformersmentioning

confidence: 99%

Topological system method of formation of transformer transformation coefficients

Akhmetbayev¹,

Dzhandigulov

Bystrova³

2020

E3S Web of Conf.

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Section: Modelling Transformation Ratios Of Transformersmentioning

confidence: 99%

Topological system method of formation of transformer transformation coefficients

Akhmetbayev¹,

Dzhandigulov

Bystrova³

2020

E3S Web of Conf.

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“…The solution of the obtained problem of conditional minimization of function (11), taking into account the restrictions described above, according to the proposed algorithm, for see reducing it to the problem of unconditional minimization of the following generalized function…”

Section: Fig 1 Determination Of Optimal Transformation Ratio Of Thementioning

confidence: 99%

“…Most of the above mentioned works provide for the optimization of modes of electrical networks on reactive power or voltage of power plants and reactive power compensators [5][6][7]12]. At the same time, it is possible to separate a number of works, in particular, [8][9][10][11], which have made a significant contribution to the development of the theory of optimization on transformation coefficients of transformers.…”

Section: Introductionmentioning

confidence: 99%

“…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. Therefore, this algorithm cannot be directly used to minimize losses in electrical networks.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of Electrical Networks Modes on Transformation Coefficients of Transformers

2020

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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.

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“…A completely new topological approach was proposed in the work of the first author [14][15][16]. Moreover, to calculate matrix A in formula (3), explicit expressions are obtained that are computed without the need to find 2-trees.…”

Section: Calculation Of Distribution Coefficients Of Driving Currentsmentioning

confidence: 99%

Topological algorithm for forming nodal stresses of complex networks energy systems

2019

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The paper presents a new topological algorithm for the formation of nodal stresses of complex networks of power systems. The first step of the described algorithm is the search and determination of the values of all possible and specific trees of the graph corresponding to a given network of the power system. The well-known advantage of the topological approach compared to matrix methods, which allows one to obtain the final solution of non-linear equations of the steady state, has led to the development of many methods and corresponding software implementations. The paper provides a comparative analysis of the advantages and disadvantages of these methods. The main computational complexity of these methods is the search for 2 trees for each tree, which are obtained from it by dividing into two parts by removing any branch. A completely new topological approach that does not require finding 2 trees was proposed by one of the authors. The process of this method consists of the following steps: finding all possible graph trees, selecting specific graph trees, calculating the network node voltage. The work offers a unique algorithm for the implementation of these stages, which are implemented and tested at the software level. The result of the execution of the software package is the calculation of the steady state of a complex electric network using the distribution coefficients of the driving currents.

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Determination of rational transformation coefficients of transformers distribution networks

Cited by 10 publications

References 1 publication

Topological system method of formation of transformer transformation coefficients

Topological system method of formation of transformer transformation coefficients

Optimization of Electrical Networks Modes on Transformation Coefficients of Transformers

Topological algorithm for forming nodal stresses of complex networks energy systems

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