Increasing the energy efficiency of an enterprise by point compensating of power quality distortions

Zamyatin, Egor O.; Voytyuk, Irina N.; Zamyatina, Elena N.

doi:10.1051/e3sconf/201914004010

Cited by 9 publications

(3 citation statements)

References 17 publications

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“…For instance, frequency converters and rectifiers cause production with high energy efficiency. This could be due to the new structure of the rectifier [4], new electromechanical transmission [5], new harmonic compensating device, or a method to implement it that allows a reduction of active power losses in the distribution network [6,7]. Additionally, semiconductor devices can become a basis for some low-power supply systems [8].…”

Section: Introductionmentioning

confidence: 99%

Method for Evaluation of the Utility’s and Consumers’ Contribution to the Current and Voltage Distortions at the PCC

et al. 2021

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In this article, a method that allows sharing responsibilities for the generation of harmonic currents between the utility and consumers powered by one point of common coupling (PCC) is addressed. For these purposes, mathematical modeling of the power supply system (PSS) with two consumers is carried out in order to introduce new indices using the simplest PSS structure as an example. Two indices are introduced that quantify the consumers’ contribution to the distortion of current and voltage at the PCC and that evaluate harmonic emission from the utility side. Experimental tests are carried out where both linear and nonlinear loads are considered, capacitive loads are taken into account, and harmonic distortions from the utility side are modeled to show the applicability of the indices in a wide range of load types. The experiments confirmed the theoretical results and illustrated that the quantitative assessment of the contributions is unambiguous. It suggests that the proposed criterion could be a reasonable basis for further tax policy on harmonic pollution for each consumer at the PCC and for the utility.

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Section: Introductionmentioning

confidence: 99%

Method for Evaluation of the Utility’s and Consumers’ Contribution to the Current and Voltage Distortions at the PCC

et al. 2021

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“…There are known cases of stoppages in technological lines at food industry enterprises resulting from exceeding the voltage distortion levels due to outside, nonlinear consumers being connected to the point of common coupling [9]. So, it is necessary to provide power quality indices control [10,11] in order to both identify power distortion sources [12] and compensate for the resulting harmonics [13].…”

Section: Introductionmentioning

confidence: 99%

Experimental Determination of Parameters of Nonlinear Electrical Load

et al. 2021

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The paper deals with issues of modeling nonlinear electrical loads of various types, such an uncontrolled rectifier, thyristor rectifier, thyristor power regulator and mixed equivalent nonlinear load. For these load types, existing analytical expressions were identified to determine the magnitudes of harmonic currents, and waveforms of currents were obtained during measurements in laboratory conditions with variable parameters of the grid impedance and load. The obtained results were compared, and it was found that the error in determining the magnitudes of harmonic currents can reach 60% for an individual load and 54% for an equivalent load. A more accurate method for determining the parameters of nonlinear electrical load is also proposed, which is based on the application of shunt harmonic filters. In laboratory conditions, it was found that when using the developed method, the error did not exceed 10% for an individual load and 14% for an equivalent load.

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“…It should be noted that the loss or technological consumption of electrical energy during its transmission is the most important indicator of the efficiency of electrical network, and a clear indicator of the state of electricity metering systems [7,8]. At the same time, electricity is the only type of product transmitting of which doesn't require other resources, but a part of the transmitted energy itself is consumed [9].…”

Section: Introductionmentioning

confidence: 99%

Influence of smart metering systems on increasing the accuracy of calculation electrical power losses in electrical networks

et al. 2020

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The article discusses the possibility of using data from smart electricity meters (SEM) to increase the accuracy of calculation losses in 0.4 kV low-voltage networks. An increase in accuracy can be achieved using actual data about the load graph of electricity consumers (in this case, 6(10)-0.4 kV transformer substations are meant). To date, the operating load factor is taken equal to 0.5, which does not always correspond to the actual data. Using SEM, actual load graphs can be obtained, which enable more accurate determination of the operating load factor. Consequently, the accuracy of calculation of electrical energy losses will be increased.

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Increasing the energy efficiency of an enterprise by point compensating of power quality distortions

Cited by 9 publications

References 17 publications

Method for Evaluation of the Utility’s and Consumers’ Contribution to the Current and Voltage Distortions at the PCC

Method for Evaluation of the Utility’s and Consumers’ Contribution to the Current and Voltage Distortions at the PCC

Experimental Determination of Parameters of Nonlinear Electrical Load

Influence of smart metering systems on increasing the accuracy of calculation electrical power losses in electrical networks

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