Monopolar mode of operation of HVDC in the main electric networks of Ukraine

Authors

DOI:

https://doi.org/10.15588/1607-6761-2020-1-3

Keywords:

direct current transmission, monopolar mode, grounding electrode, dc link, power transformers

Abstract

Purpose. Perform an analysis of the conditions of the direct-current transmission in a monopolar mode in the conditions near the alternating voltage substation located and to conduct a study of the occurrence of a direct current of dc bias in the windings of power transformers of an alternating current that fall into the zone of the induced potential.

Methodology. The basis of the work is based on theoretical studies of the problems related to the operation of power equipment of alternating voltage in the zone of action of the given potential in foreign countries. The results of the research were processed using modern software applications: MathCAD.

Findings. In the course of the work, overtime values of the direct current of magnetization of windings of autotransformers for the Vinnytsia 750 kV substations were obtained, with the location of a transformation substation in the Western Ukrainian Power System of Ukraine, at a 750 kV Western-Ukrainian substation. When operating semiconductor converters in unipolar mode, the direct magnetizing current exceeds the permissible norms by 13% for 330 kV substations and more than 7 times for 750 kV substations.

Originality. The authors carried out a theoretical study, one of the possible options for establishing the transmission of DC in Ukraine, and identified the risks associated with the monopolar mode of operation of the transducer of constant voltage.

Practical value. The results of the work can be used in the design of new DC transmissions (DC inserts) in the power grid of Ukraine in order to increase its export capabilities and also at research of possible operating modes of transfers of a direct current as a part of systems of alternating voltage.

Author Biographies

V.V. Kyryk, National Technical University of Ukraine "Igor Sikorsky Polytechnic Institute", Kyiv

Sci.D, Professor, head of the department of electrical networks and systems of the National Technical University of Ukraine "Igor Sikorsky Polytechnic Institute", Kyiv

A.V. Bilyk, National Technical University of Ukraine "Igor Sikorsky Polytechnic Institute", Kyiv

Postgraduate student of the Department of Electrical Networks and Systems of the National Technical University of Ukraine "Kyiv Polytechnic Institute. Igor Sikorsky, Kiev

References

[1] Kyryk V.V., Bilyk A.V. Transmitters of DC as an instrument for the development of power interconnections. Proceedings of the XVII International Scientific and Practical Conference "Renewable Energy and Energy Efficiency in the 21st Century", September 29-30, 2016, Kyiv, NTUU KPI. -pp.145-148.

[2] Bilyk AV Features of integration of systems of permanent-th in the main networks of alternating voltage - Proceedings of the Institute of electrodynamics of the National academy of sciences of Ukraine.-2017.-№46.-pp.30-34

[3] Vinokurova Ye.V., Vorona S.S., Kyryk VV, Dremov V.V. Assessment of the induced voltage on the power transmission line with voltage of 10 kV / Hydroelectric power station of Ukraine. - 2014 - # 4. - pp. 42-43.

[4] Guihua Mei, Yuanzhang Sun, Yancun Liu Simulation on DC Current Distribution in AC Power Grid under HVDC Ground-Return-Mode − Scientific Research J. Electromagnetic Analysis & Applications, DOI: 10.4236/jemaa.2010.27054, vol. 2, ISSN 1727-9895, 2010, pp. 418-423.

[5] Jin Enshu, Yu Kuiying, Chai Fangsen Effects of DC magnetic bias on differential protection of transformer − The International Conference on Advanced Power System Automation and Protection, DOI: 10.1109/APAP.2011.6180789, 2011, pp. 2182-2186.

[6] Yang Yongming, Liu Xingmou, Yang Fan Soil Structure Effect on Transformer DC Bias − IEEE International Conference on Industrial Technology (ICIT), DOI: 10.1109/ICIT.2014.6894954 , Feb. 26 - Mar. 1, 2014, Busan, Korea, pp. 535-540

[7] Yan Li, Yanchao gao, Longnv Li, Di Zhang, Fangxu Han Effects of DC Magnetic Bias on the Magnetic and Sound Fields of Transformer − Energy and Power Engineering, doi:10.4236/epe.2013.54B209, 2013, 5, 1097-1100

[8] Xuesong Zhou, Zhihao Zhou and Youjie Ma Research on DC magnetic Bias of Power Transformer − International Workshop on Information and Electronics Engineering (IWIEE), 2012, pp. 452-455

[9] Zhang Bo,Zhao Jie,Zeng Rong,et al.Estimation of DC Current Distribution in AC Power System Caused by HVDC Transmission System in Ground Return Status − Proceedings of the CSEE. 2006, pp.84-88.

[10] Bo Zhang, Jie Zhao, Rong Zeng Numerical Analysis of DC Current Distribution in AC Power System Near HVDC System − IEEE Transactions on power delivery, DOI: 10.1109/TPWRD.2007.908748, vol. 23, no. 2, April 2008, pp. 960-965

[11] Jin Enshu, Yu Kuiying,Chai Fangsen Effects of DC magnetic bias on differential protection of transformer − The International Conference on Advanced Power System Automation and Protection, DOI: 10.1109/APAP.2011.6180789, October 2011, pp.2182-2186

[12] Rong Zeng, Zhanqing Yu, Jinliang He Study on Restraining DC Neutral Current of Transformer During HVDC Monopolar Operation.− IEEE TRANSACTIONS ON POWER DELIVERY, DOI: 10.1109/TPWRD.2011.2161345, VOL. 26, NO. 4, October 2011, pp.2785-2791

[13] José Eduardo Telles Villas and Carlos Medeiros Portela Calculation of Electric Field and Potential Distributions Into Soil and Air Media for a Ground Electrode of a HVDC System − IEEE TRANSACTIONS ON POWER DELIVERY, DOI: 10.1109/TPWRD.2003.809741, VOL. 18, NO. 3, JULY 2003, pp.867-873

[14] Zubov K.N., Nemirovsky A.E. The method of calculating permalling devices of arbitrary configuration in non-sodic soils - Technical sciences, Novaifo.ru, №2, 2010. -pp.1-7

[15] Leaf Englund, Mats Lagerquist, Rebati Dass Highways HVDC in China - ABB Power Technologies, no. 4, 2003 pp.14-20

[16] STCU NEC "Ukrenergo" World experience and eco nomic efficiency of the use of power converters and DC inserts for parallel operation of non-synchronized power systems Ministry of Energy and Coal Industry of Ukraine NEC "Ukrenergo" Scientific and Technical Center for Electricity, Kyiv, 2012, -pp.1-72

Downloads

Published

2020-03-31

How to Cite

Kyryk, V., & Bilyk, A. (2020). Monopolar mode of operation of HVDC in the main electric networks of Ukraine. Electrical Engineering and Power Engineering, (1), 24–31. https://doi.org/10.15588/1607-6761-2020-1-3

Issue

No. 1 (2020): Electrical Engineering and Power Engineering

Section

Electroenergetics

License

Copyright (c) 2020 V.V. KYRYK, A.V. BILYK

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Creative Commons Licensing Notifications in the Copyright Notices

Authors who publish with this journal agree to the following terms:

  • Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under aCreative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

  • Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.

  • Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.