Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Bartosz Olejnik"'
Publikováno v:
Energies, Vol 17, Iss 2, p 505 (2024)
Common overcurrent criteria used to detect phase-to-phase short circuits in medium-voltage (MV) networks in some cases do not bring the expected results. In particular, this applies to instantaneous overcurrent protections in lines with variable rang
Externí odkaz:
https://doaj.org/article/73cbf15f674f4fe9823bf5cce324906c
Publikováno v:
Energies, Vol 17, Iss 1, p 93 (2023)
The article presents the results of research in the field of limiting the effects of overvoltages and improving the conditions for the self-extinguishing of transient faults in medium voltage networks with earth fault current compensation. The aim of
Externí odkaz:
https://doaj.org/article/e416407cad3345f8a7321fe25948fbe1
Autor:
Bartosz Olejnik
Publikováno v:
IEEE Access, Vol 9, Pp 63952-63965 (2021)
Earth faults are the most common disturbances in medium voltage networks. They cause threats to equipment and people, and reduce the quality and reliability of electricity supply. Detection and localization of earth faults is a key challenge to netwo
Externí odkaz:
https://doaj.org/article/531444528f76468e82d950c968166911
Autor:
Bartosz Olejnik, Beata Zięba
Publikováno v:
Energies, Vol 15, Iss 23, p 9007 (2022)
The article presents a method for detecting earth faults in a compensated medium-voltage network, which can be used especially in fault current passage indicators, but also in standard protection devices. The method is based on the adaptation process
Externí odkaz:
https://doaj.org/article/bdbc560a703c4088a2cdb060c220a4c8
Publikováno v:
Archives of Electrical Engineering, Vol vol. 68, Iss No 4, Pp 749-769 (2019)
During a blackout, after the post-disaster collapse of an electric power system (EPS), units of thermal power plants should switch-over to the house load operation mode (PPW). However, regarding the dynamics of a post-disaster blackout process, many
Externí odkaz:
https://doaj.org/article/2e9fe459aa62436eb4bb842843138659
Autor:
Krzysztof Łowczowski, Bartosz Olejnik
Publikováno v:
Energies, Vol 15, Iss 3, p 1066 (2022)
This paper presents the final development of an expert system utilizing a measurement of cable screen earthing transient current. The developed system allows for identification and location of earth fault in underground cable and mixed lines (undergr
Externí odkaz:
https://doaj.org/article/f5ff9f8ac20e4ccf8d0bf017cf56f63a
Publikováno v:
Energies, Vol 12, Iss 7, p 1348 (2019)
This paper presents current flow in cable screens and a cable screen earthing system. Moreover, the paper presents the methodology for the detection of problems in cable screens, such as open phase in a cable screen and high contact resistance of a c
Externí odkaz:
https://doaj.org/article/56105de3d7b84cd897053bea62e532d1
Publikováno v:
E3S Web of Conferences, Vol 64, p 08005 (2018)
The article presents typical methods of connecting various types of local power sources to a medium voltage network. Describes the advantages and disadvantages of individual solutions. The authors focus particularly on the issues of power system prot
Externí odkaz:
https://doaj.org/article/08689d45259648bdbf751571951de29e
Publikováno v:
Archives of Electrical Engineering.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::022b949c3b76c7b0fb0b968c305e2614
https://doi.org/10.24425/aee.2019.130681
https://doi.org/10.24425/aee.2019.130681
Publikováno v:
PRZEGLĄD ELEKTROTECHNICZNY. 1:9-12
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7aca2b78d91b6107131a0b13487747b
https://doi.org/10.15199/48.2019.02.02
https://doi.org/10.15199/48.2019.02.02