Abstract
A systematic approach to determining the control range of the on-load tap-changer of transformers from the standpoint of the synthesis of the voltage mode is proposed. Transformations of the equation of nodal voltages, formalized on the basis of the topology of a complex electrical network, with respect to the transformation ratios of transformers are given.
Highlights
An increase in the efficiency of power consumers can be achieved at normalized values of the power quality indicators [1, 2]
In order to ensure the standard indicators of the quality of electricity, continuous regulation of the network voltage mode is required, which is associated with great difficulties due to the variety of regime tasks
The analysis of the study shows that the greatest economic effect is obtained from centralized voltage regulation at power points of distribution networks [3, 4, and 5]
Summary
An increase in the efficiency of power consumers can be achieved at normalized values of the power quality indicators [1, 2]. To increase the efficiency of using the on-load tapchanger of transformers, it is necessary to check the sufficiency of the regulating range to ensure the desired voltage level on the low-voltage bus bars in the modes of the highest and lowest loads. This problem is solved individually for each transformer based on the results of calculating the steady state of electrical networks of power systems [7, 8]. The development of a systemic method for assessing the adjustment range of the on-load tap-changer of transformers is an urgent task in modern conditions of voltage control of electrical networks
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