Measures and technical means for increasing efficiency and reliability of extra high voltage transmission lines
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F20%3A43959870" target="_blank" >RIV/49777513:23220/20:43959870 - isvavai.cz</a>
Result on the web
<a href="http://pe.org.pl/articles/2020/11/28.pdf" target="_blank" >http://pe.org.pl/articles/2020/11/28.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.15199/48.2020.11.28" target="_blank" >10.15199/48.2020.11.28</a>
Alternative languages
Result language
angličtina
Original language name
Measures and technical means for increasing efficiency and reliability of extra high voltage transmission lines
Original language description
Electromagnetic transients are considered in the implementation of three-phase automatic reclose on the transmission line of extra high voltage 750 kV. The influence of automatic shunting of phases and pre-insertion active resistance for limiting the characteristics of the aperiodic component of the current, which obstructs the transition of full current through zero, is evaluated. The paper analyses measures taking into account the effect of changing the degree of compensation of charging power and the angles of switching on an SF6 circuit breaker. Sub-schemes of disconnected undamaged phases of the extra high voltage transmission line for the investigation of the aperiodic current component have been devel oped. The values of the pre-insertion active resistances of different connection and automatic shunting of the phases are determined at which there is an effective reduction of the characteristics of the aperiodic component of the current. In the software environment, a model was developed and switching transient processes were simulated in the 750 kV transmission line. Operating modes that are potentially dangerous for SF6 circuit breakers are determined and recommendations are given to avoid them. Currently the technical and economic requirements for power transmission lines designed for the transport of electricity from large power plants and for the communication of powerful energy systems are increasing. Today there is importance of reducing specific investment in the construction of new and reconstruction of existing lines. The solution to these issues is associated with the maximum use of power lines by increasing their power transfer capability and controlling modes, especially in operating emergency conditions and post-emergency operation of power systems.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20201 - Electrical and electronic engineering
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Przeglad Elektrotechniczny
ISSN
0033-2097
e-ISSN
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Volume of the periodical
96
Issue of the periodical within the volume
11
Country of publishing house
PL - POLAND
Number of pages
7
Pages from-to
135-141
UT code for WoS article
000582561400028
EID of the result in the Scopus database
2-s2.0-85095736832