Gidajin Transformer Bushings: Ayyuka, Kudanci, Abubuwa da Kula

1. Tashin Transformer Bushings

Tashin mafi yawan transformer bushings shine tushen kablolar da za suka shiga cikin jiki. Suna da muhimmanci a matsayin abubuwa masu harsuna da kablola da ciyawa na gida, kuma a matsayin wasu masu kawo kablolar.

A lokacin da transformer ya yi aiki, bushings suna kan tasiri mai karfi da mai karfi, kuma idan an yi gajarta waje, suna kan tasiri mai karfi mai karfi. Saboda haka, transformer bushings suna da kyau a tabbatar da:

• Da harshen kayan aikinsa mai tsari da kayan aikinsa mai karfi;

• Da inganci mai karfi don zama karfin tsakiyar lokaci;

• Da sauyin da take fiya da kayan aikinsa mai tsari, da amfani da shi da kadan, da kayan aikinsa mai hankali, kuma da kyau a yi amfani da shi.

2. Tsarin Waje na Bushings

Abubuwan da suke cikin bushing sun haɗa: terminal boards, lead connectors, rain covers, oil level gauges, oil plugs, oil reservoirs, upper porcelain sleeves, lower shields, lifting rings, oil valves, nameplates, vent plugs, connecting bushings, lower porcelain sleeves, and equalizing balls.

3. Tsarin Gida na Bushings

• Tsarin Harsuna Masu Kayan Aikinsa Mai Tsari: An samun shi ne daga manyan layon cylindrical capacitor core, wanda an yi shi ne daga oil-impregnated cable paper da aluminum foil equalizing electrodes; harsunan waje an yi shi ne daga porcelain sleeves, wadanda suke aiki a matsayin wasu masu kawo transformer oil.

• Ingancin Harsuna: An samun shi ne daga tsarin mai hankali mai karfi, inda transformer oil na gida ta shiga tsari wanda ba zai iya kasance saboda halin jiki na waje.

• Tsarin Kofar: An samun kofar shi ne daga strong spring mechanical fastening, wanda ya tabbatar da harsunan kofar da kuma kiyaye kofar mai karfi da ke faruwa saboda yanayin lokaci.

Oil reservoir a makwabta bushing ana amfani da shi don koyar wuya na oil volume wadanda an faru saboda yanayin lokaci, don in kusa da karfin tsari mai karfi a gida; oil level gauge a oil reservoir yana iya koyar wuya na oil level a lokacin da ake yi aiki. Equalizing ball a bakin bushing yana taimakawa wajen zama electric field distribution, don in kasa insulation distance bayan bushing tail da wasu masu kayan aikinsa mai hankali ko coils.

Small bushing a end screen na oil-paper capacitor bushings ana iya amfani da shi don capacitance, dielectric loss factor tests, da kuma partial discharge tests na transformers. A lokacin da ake yi aiki, small bushing ya kamata a yi ground reliable. Idan ake buƙata small bushing na end screen, ya kamata a duba hanyar karbu ko kafuwar small bushing rod, don in kusa da kafuwar kablolar ko kusan kasa a copper foil na electrode plate.

4. Tashin Transformer Bushings Na Three-Phase

Idan ake nemo daga high-voltage bushing side na transformer, tashin left-to-right ya kunshi:

• High voltage side: O, A, B, C

• Medium voltage side: Om, Am, Bm, Cm

• Low voltage side: O, a, b, c

5. Takaitaccen Bushings Daga Ingantaccen Kayan Aikinsa Mai Tsari Da Tsari

Bushings ana iya kawo shi ne daga kungiyoyi uku:

• Single Insulation Bushings: Tun duka pure porcelain bushings da resin bushings;

• Composite Insulation Bushings: An kawo shi ne daga oil-filled, gel-filled, da kuma gas-filled bushings;

• Capacitor Bushings: Tun duka oil-paper capacitor bushings da resin-paper capacitor bushings.

6. Oil-Paper Capacitor Bushings

Daga babban current-carrying structure, oil-paper capacitor bushings ana iya kawo shi ne daga cable-through type da conduit current-carrying type. Daga cikinsu, conduit current-carrying type an kawo shi ne daga direct-connection type da rod-through type daga rukuni da ake kofar bayan oil-side terminal da bushing. Cable-through da direct-connection conduit current-carrying bushings suna da amfani a cikin power systems, amma rod-through oil-paper capacitor bushings suna da wani amfani.

Fasahar tsarin capacitor core na capacitor bushings shine: An faru shi ne daga hollow conductive copper tube a matsayin asalin, an koyar shi ne daga layer of cable paper da tsari 0.08-0.12mm a matsayin insulation layer, sannan an koyar shi ne daga layer of aluminum foil da tsari 0.01mm ko 0.007mm a matsayin capacitor shield; wannan koyar shi ne daga cable paper da aluminum foil ana faru har zuwa idan an samun layon da tsari da aka tambaya.

Wannan ya samun manyan layon series capacitor circuit—indace conductive tube yake da harsuna mai tsari, kuma aluminum foil na bakin yake da ground (ground shield). Daga fassara series capacitor voltage division, voltage bayan conductive tube da ground yana iya kan addin voltage bayan each capacitor shield layer, kuma voltage bayan shield layers yana iya kan inversely proportional to their capacitance. Wannan ya tabbatar da voltage total yana iya kan distributed evenly across the entire insulation layer na capacitor core, don in samun sauyin da take fiya da kayan aikinsa mai tsari da transformer bushing.