Внутрішнє симетрування однофазних електроприймачів та вирівнювання їх групового графіка навантажень

Abstract

Досліджено впливи рішень із зсуву індивідуальних графіків однофазних навантажень на формування групового графіка навантажень і на несиметрію електричного режиму і розроблені рекомендації, які враховують взаємозв’язки між зазначеними задачами.

Исследованы воздействия решений по сдвигам индивидуальных графиков однофазных электроприемников на формирование группового графика нагрузок и на несимметрию электрического режима, а также разработаны рекомендации, учитывающие взаимосвязь этих задач.

There has been studied the influence of tasks of internal symmetry of single-phase electric devices on formation of their group load schedule and the asymmetry of the electric mode. The recommendations for the consideration of these interconnections in practice have been developed.

It is established that the criteria for solving both problems are contradictory. The decision to shift the individual load schedules to align the group graphics is accompanied by an increase in asymmetry of the regime and vice versa.

In case of prioritization of the task of aligning the group load of loads, the decision to shift the individual load graphs of single-phase electronics should be taken, guided by the criterion that evaluates the unevenness of the group graph. The obtained results can be improved by optimal distribution of single-phase electric devices between the voltages of the electrical network, without affecting the effect obtained from the alignment of the group load schedule.

If the priority is the task of the simulation of the electric mode, then, in order to equalize the loads in phases, it is necessary to use as shifts in the time of technological cycles of single-phase electric collectors, so their distribution between phases of the network. In such a case, there might be a case where the standards of the standard for the quality of electric power according to the asymmetry of the electric mode are not provided in the network. By criterion for decision making, one of the parameters should be selected, which is a measure of the asymmetry of the electric mode. In this case, in order to obtain the maximum effect of the decision must be taken, solving the problem as a whole.

The correctness of the conclusion regarding the contradictory nature of the criteria and the formulated recommendations was checked on control samples, in which, according to the same initial data, tasks were solved using known methods.