Instrumental Research on the Voltage Harmonic Distortion Coefficient in the Modern 110 kV Urban Electric Network

Zhantlessova, Assemgul; Zhumazhanov, Serik; Akimzhanov, T B; Issabekova, Bibigul B.; Issabekov, Zhanat B.; Mekhtiyev, A. D.; Neshina, Y. G.

doi:10.15866/irecon.v11i2.22979

Cited by 1 publication

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“…The data of the overhead line parameters are initial for calculating the parameters of the system of telegraphic equations that allow calculating the change of voltages and currents along the length of the line [2].…”

Section: Methodsmentioning

confidence: 99%

“…The processing of experimental data is based on the concepts of probability theory and mathematical statistics. These include the concepts of the general population, sampling, empirical distribution function [2].…”

Section: Methodsmentioning

confidence: 99%

“…The paper [2] presents the research results for one region. All this suggests that it is advisable to conduct a study of the entire energy system of the Republic of Kazakhstan.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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Identifying the influence of the system and mode characteristics on the power loss mode based in 110 kV power grids

Akimzhanov,

Sarsikeyev,

Zhantlessova

et al. 2023

EEJET

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In this paper, the object of the research is 110 kV power grids of three regions of the Republic of Kazakhstan: Astana city, Turkestan region and Shymkent city, as well as West Kazakhstan region. Operators of the studied power grids have no idea about the real levels of voltage and current sinusoidality distortion coefficients, as well as about their relationship with other regime and system parameters of power grids. Similar problems may be faced by other grid companies that do not have the appropriate information and measurement infrastructure to monitor the modes of power grids in terms of voltage and current sinusoidality distortion. In the course of the present study, using portable three-phase power quantity and quality analyzers, it was possible to make daily measurements of mode parameters in 41 110 kV transmission lines with a length of 5 to 120 km. The results of measurements showed that in Astana city, the voltage quality is at a satisfactory level, but the distortion coefficient of sinusoidality of current reaches 39 % (the average level for 15 studied lines is 13.3 %) due to the high concentration of non-linear load of consumers. In the South of Kazakhstan, the voltage and current sinusoidality distortion coefficients are relatively moderate, but voltage drops are frequent (sometimes up to 10 % or more) due to the large distance between load centers and relatively high population density. In the power grids of Western Kazakhstan, voltage and current sinusoidality distortion coefficients have high levels (reach 14 % and 70 %, respectively) due to low network load with a large length of transmission lines. The analysis makes it possible to trace the relationship of voltage and current sinusoidality distortion coefficients with such regional characteristics as population density, nature of loads, power losses, voltage and current levels

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%