ANALYSIS OF POSSIBILITY OF LOW POWER TAKE-OFF FROM MEDIUM VOLTAGE OVERHEAD TRANSMISSION LINES

DOI: 10.47026/1810-1909-2022-1-100-106

УДК 621.31

ББК 31.25

ALEXANDR I. ORLOV, SERGEY V. VOLKOV, ILSUR KH. GARIPOV, SERGEY G. NIKIFOROV

Key words

power take-off, secondary source, overhead power line, isolated neutral, capacitive voltage divider, capacitor

Abstract

The paper considers the possibility of using capacitive power take-off from medium voltage overhead power lines with isolated neutral. Direct scaling of the designs of the known 1-phase capacitive power take-off devices intended for high voltage overhead power lines is impractical for several reasons: the impossibility of obtaining significant power, violation of the operating conditions of protection against single-phase earth faults, the creation of asymmetry of phase voltages relative to the ground. As a power take-off device, it is proposed to use a 3-phase symmetrical circuit of a capacitive voltage divider with a voltage converter at the output, which makes it possible to minimize the indicated disadvantages. On the basis of computer simulation of the equivalent circuit of an overhead line section with a power take-off device, its external characteristics were obtained for various values of the capacitance of the voltage divider capacitors. The simulation results confirm the technical feasibility and feasibility of using the proposed power take-off method for feeding low-power 1- and 3-phase consumers.

References

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Information about the authors

Aleksandr I. Orlov – Candidate of Technical Sciences, Head of the Department of Electromechanics, Mari State University, Russia, Yoshkar-Ola (karlorlov@gmail.com; ORCID: https://orcid.org/0000-0003-1152-6668).

Sergei V. Volkov – Candidate of Technical Sciences, Associate Professor, Dean of the Electroenergy Faculty, Mari State University, Russia, Yoshkar-Ola (svedin2011@mail.ru).

Ilsur Kh. Garipov – Candidate of Technical Sciences, Head of the Department of Power Supply and Technical Diagnostics, Mari State University, Russia, Yoshkar-Ola (ilsur@bk.ru; ORCID: https://orcid.org/0000-0002-3037-7365).

Sergey G. Nikiforov – 4^th Year Student, Faculty of Electric Power Engineering, Mari State University, Russia, Yoshkar-Ola (oscol2700@gmail.com; ORCID: https://orcid.org/0000-0001-9157-9684).

For citations

Orlov A.I., Volkov S.V., Garipov I.Kh., Nikiforov S.G. ANALYSIS OF POSSIBILITY OF LOW POWER TAKE-OFF FROM MEDIUM VOLTAGE OVERHEAD TRANSMISSION LINES. Vestnik Chuvashskogo universiteta, 2022, no. 1, pp. 100–106. DOI: 10.47026/1810-1909-2022-1-100-106 (in Russian).

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