Muhimmiya na Fassara da Kable a Transformer Yadda Ake Bayyana

Bayanin Fafutukar Wata da Kalmomi

• Iyakokin zabe ta hanyar tsakiya ya kai tsawo, kuma iyakokin zabe ta hanyar tsari yana cikin kadan 100 daga iyakokin zabe ta hanyar tsari na gasar.

• Iyakokin maza ta kan jirgin saman da ke kashi ya kai 25-50 daga iyakokin maza ta kan gasar da ke gaba.

• Matsayin wata ta haliyar kasa na gasar da ke gaba: 300-1500Hz, kuma matsayin wata ta haliyar kasa na kan jirgin saman: 1500-3000Hz.

• Abubuwan magance don IEE-Business grounding transformer: A lokacin da takara ta bayanin aiki, iyakokin zabe ta ya kai tsawo, kuma kawai hasken alama ne ta shiga abincin kasa; idan yanayi a kan tsari mai yawa, abincin kasa ta bar masu iyakoki mai yawa don siffofin musamman da biyu, kuma masu iyakoki mai yauwa don siffofin uku. Abubuwan hanyoyin cikin wannan abinci ne Y0/Δ ko Z-type.

• Saboda abinci na tsakiya ta yi amfani da hanyoyin Z, kowace abinci na tsakiya tana cikin duwatsu, wadanda suke cikin duwatsu masu tsarin duwa daban-daban, kuma abincin kasa suna haɗa da sauyin adadin mutum. An haɗe sabon hankali na uku da abinci masu tsari biyu, wanda ya ba mu karɓar iyakokin zabe ta hanyar uku da kuma karɓar haske ta hanyar uku, wanda ya ba a yi amfani da kyakkyawan takarda ta 100% na abinci. Idan an haɗe arc suppression coil a cikin abinci na rai, kyakkyawarta ya ba za a iya karkashin 20% na kyakkyawan takarda na abinci; amma a cikin abinci na Z-type, ana iya haɗe arc suppression coil da kyakkyawar takarda na 90%-100%, wanda ya ba a yi amfani da kyakkyawan takarda.

• Akwai abubuwan da za su iya haɗe sabon arc suppression coil, abinci na grounding ta iya iya zama da dukun abinci da ke gudanar da ma'aikatar. Idan ana haɗe dukun abinci, kyakkyawan takarda na abinci na grounding ya zama cikin kadan kyakkyawan takarda na arc suppression coil da kyakkyawan takarda na dukun abinci; idan baa haɗe arc suppression coil, kyakkyawan takardarsa ya zama kadan kyakkyawan takarda na arc suppression coil.

• Dalilin addin damfurin resistor shine maimaita hasken N da ke kan abinci zuwa mafi girma 15% daga hasken tsari a lokacin da resonance yake a cikin system, don haka ya ci gaba aiki na system da kuma ya ƙare hasken yawan yaki. Idan yanayi a kan tsari mai yawa, an haɗe current mai yawa a kan hasken N, kuma damfurin resistor ya zama da shiga a lokacin.

• Idan an yi amfani da hanyoyin zabe ta hanyar resistance na ƙasar, an buƙata box na medium resistance da ke haɗe a kan abubuwa biyu na arc suppression coil. Idan device ya nuna cewa yanayi mai yawa ta faru a cikin system, an haɗe medium resistance don in yi shiga active current a cikin system don in zabe abubuwa, kuma an ciwo medium resistance a lokacin da kadan.

• Yadda aka fiye dielectric constant, yadda aka fiye iyakokin zabe.

• Abinci masu tsarin uku da ake amfani a cikin system ta kula suna da abubuwan hanyoyi domin Dyn11, wadannan suna da abubuwan fa'idota: take iya haɗe current na harmonics, take iya ci gaba takarda ta bayanin aiki, take iya karɓar iyakokin zabe ta hanyar uku, take iya karɓar current na yanayi mai yawa, kuma take iya taimaka waɗanda suke kaɗe yanayi mai yawa; take iya zama da kyakkyawan takarda na abinci a lokacin da dukun abinci na tsarin uku, kuma take iya karɓar haske ta hanyar uku.

• Iyakokin wave na gasar da ke haɗe a kan abinci na tsakiya tana cikin kadan hundred ohms, kuma iyakokin wave na gasar da ke haɗe a kan abinci na kasa tana cikin kadan tens to more than hundred ohms.

• Damping rate na power frequency na gasar da ke gaba tana cikin kadan 3%-5%, kuma tana iya karɓar zuwa 10% idan gasar ta ƙarƙasha; damping rate na power frequency na kan jirgin saman tana cikin kadan 2%-4%, kuma tana iya karɓar zuwa 10% idan insulation ta ƙarƙasha.

• Iyakokin maza ta kan jirgin saman daga 3-35kV tana cikin kadan 5000-6000pF/km. Current na maza ta kan gasar da ke haɗe a kan abubuwa biyu a kan ƙasar tana cikin kadan Ic=(1.4-1.6)Id (ida Id shine current na maza ta kan gasar da ke gaba; coefficient 1.6 tana cikin kadan gasar da ke 35kV, kuma 1.4 tana cikin kadan gasar da ke 10kV).

• Don system ta hanyar uku da ke haɗe resonant grounding, idan yanayi a kan tsari mai yawa, saboda iyakokin zabe ta hanyar uku ya kai tsawo, residual current ba ta ƙunshi 3rd da integer multiple harmonic currents, musamman 5th da 7th harmonic currents.

• Idan an haɗe arc suppression coil a cikin abinci na rai, kyakkyawarta ya ba za a iya karkashin 20% na kyakkyawan takarda na abinci. Abinci na Z-type ta iya haɗe arc suppression coil da kyakkyawar takarda na 90%-100%. A cikin abinci na grounding, ana iya haɗe dukun abinci da kuma ya zama da abinci na station, don haka ya ba a yi amfani da kyakkyawan takarda.

• A lokacin da abinci na grounding ya yi aiki, idan zero-sequence current ta shiga, currents ta shiga a kan abinci masu tsari biyu a kan duwatsu biyu, suke haɗa da sauyin adadin mutum, saboda haka magnetomotive forces ta shiga suka haɗa da sauyin adadin mutum, suka haɗa da sauyin adadin mutum, don haka iyakokin zabe ta hanyar uku ya kai tsawo. Saboda iyakokin zabe ta hanyar uku na abinci na grounding ya kai tsawo, idan yanayi a kan tsari C ta faru, ground current I ta shiga a kan hasken N kuma ta shiga a kan abinci na grounding; saboda currents ta shiga a kan abinci na grounding suke haɗa da sauyin adadin mutum, displacement na hasken N ba ta ƙunshi lamarin, kuma line voltages ta hanyar uku suke haɗa da sauyin adadin mutum.

• Harmonics a cikin circuit ta hanyar uku suna da cewa suna cikin nonlinear characteristics na core na abinci. Saboda dukun abinci na distribution networks na Najeriya suna da hanyoyin delta, ba a ƙunshi 3rd da integer multiple high-order harmonics a cikin circuit ta hanyar uku, saboda haka ground fault current ba ta ƙunshi high-order harmonic components, musamman 5th da 7th harmonic components, suna haɗa da sauyin adadin mutum.

• Don yanayi a kan tsari mai yawa, equivalent sequence network tana cikin series connection of positive, negative, and zero sequence networks; don yanayi a kan tsari biyu, equivalent sequence network tana cikin parallel connection of positive, negative, and zero sequence networks; don yanayi a kan tsari biyu, equivalent sequence network tana cikin parallel connection of positive and negative sequence networks; don yanayi a kan tsari uku, equivalent sequence network tana cikin positive sequence network only.