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Izvedba analize prenapetostne zaščite 110 kV kablov v RTP 110/35/20/10 kV Koper : ref. št. 1728Iglič, Mladen ; Hostnik, Martin, elektrotehnikZa predvideno rekonstrukcijo 110 kV stikališča RTP Koper, je bila , za atmosferske razelektritve, opravljena analiza prenapetostnih razmer in učinkovitost prenapetostne zaščite, ki je izvedena s ZnO ... odvodniki na prehodu zračni vod-kablovod v 110 kV stikališču. 110 kV stikališče bo izvedeno v GIS tehnologiji in bo nameščeno v novo zgrajenem delu stavbe RTP Koper. 110 kV kabli bodo speljani iz kabelskega prostora pod GIS prostorom po kabelskih ceveh na plato RTP-ja in naprej do energetskih transformatorjev ter do izhodnih daljnovodnih portalov. Prenapetostna zaščita bo izvedena s ZnO odvodniki, ki bodo nameščeni ob kabelskih končnikih. V točki prehoda zračnega voda v kabelski vod, pride do spremembe valovne impedance. Zato na tem mestu prihaja ob nastanku prenapetosti do napetostnih odbojev, kar povzroča še višje prenapetosti kot sicer. Običajno se na ta mesta vgradi prenapetostne odvodnike, ki te prenapetosti učinkovito omejujejo na take vrednosti, da ne ogrožajo izolacije kabla in druge VN opreme. Prav tako so bile raziskane prenapetostne razmere na kablih v primeru, ko je kabel galvansko ločen od IS postroja. Rezultati računalniških simulacij so pokazali, da bo predvidena izvedba prenapetostne zaščite učinkovito ščitila izolacijo VN naprav v 110 kV stikališču. Pri delovanju ZnO odvodnikov se bo sprostila takšna količina energije, da odvodniki ne bodo v nobenem primeru termično ogroženi.Type of material - treatise, studyPublication and manufacture - Ljubljana : Elektroinštitut Milan Vidmar, 2005Language - slovenianCOBISS.SI-ID - 26892293
Author
Iglič, Mladen |
Hostnik, Martin, elektrotehnik
Topics
vodniki |
prenapetostne razmere |
kabli |
elektrotehnika |
stikališče |
prenapetostne razmere |
vodniki |
energetika
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Iglič, Mladen | 16036 |
Hostnik, Martin, elektrotehnik |
Source: Personal bibliographies
and: SICRIS
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