Tsunonin Kudin Kudin Turuwa na Tafin Kuliya na IEE-Business
1. Hanyoyin ƙarfi da Takalma na Kwalba
Hanyoyin ƙarfi da takalma na kwalba suna cikin jerin tafarin:
| Na'urar da Noma | Muhimmiyar Siffar | Kungiyar | |
| 1 | Takamantar Yadda Ake Tsakiya Da Kyautar | Nau'in Capacitive | Resin-impregnated paper Oil-impregnated paper |
| Nau'in Ba Tana Cikin Capacitive | Gas insulation Liquid insulation Casting resin Composite insulation |
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| 2 | Abincin Yadda Ake Tsakiya Da Kafuwar | Porcelain Silicone Rubber |
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| 3 | Abin da ake koyar waɗanda a kan ƙasar Capacitor da Abincin Yadda Ake Tsakiya Da Kafuwar | Oil-filled Type Gas-filled Type Foamed Type Oil-paste Type Oil-gas Type |
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| 4 | Abin da ake Amfani da shi | Oil-Oil Oil-Air Oil-SF₆ SF₆-Air SF₆-SF₆ |
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| 5 | Yanayin da ake Amfani da shi | AC DC |
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2. Zabinin da Zaɓi na Bushings
2.1 Zabinin Daɗi na Zaɓi
2.1.1 Zaɓin da bushings ya zama da yake daɗe da karkashin siffar da suka samu, kamar: ci gaba da tsarin voltage, ci gaba da amfani a takaice, ci gaba da inganci, da kuma hanyoyin sauyin, don ba da shawarwari don amfani da gasar jirgin sama.
2.1.2 Zaɓin da bushings ya zama da yake daɗe da muhimmanci da abubuwa masu, kamar:
Yanayin da ake amfani: ci gaba, ci gaba da tsirrai, ci gaba da faren lamba, ci gaba da tsafta, hanyoyin sauyin;
Tsarin transformer: hanyoyin sauyin, hanyoyin sauyin da bushing, ci gaba da takam da current transformers;
Tsarin bushing: hanyoyin da ke sauya, tsarin inganci na baya (oil-impregnated paper ko resin-impregnated paper), material na baya (porcelain ko silicone rubber);
Mai sauri da bushing, inganci da zama, na'urar da amfani da abubuwan da suka samu.
2.1.3 Ci gaba da inganci na bushings ya kamata a kasance mafi ci gaban da transformer mai girma.
2.2 Zaɓin da Karkashin Tsarin Voltage na Transformer
2.2.1 Idan tsarin voltage na bushings ta fi 40.5kV, tsarin inganci mai gaba na bushings ya kamata a kasance na tsarin condenser.
2.2.2 Idan tsarin voltage na bushings bai fi 40.5kV, tsarin inganci mai gaba na bushings za a iya zama na pure porcelain (composite) ko condenser, cikin yanayin da ke daɗe.
2.3 Zaɓin da Hanyoyin Suya da Bushings
2.3.1 Idan tsarin amfani na bushings ta fi 630A, hanyoyin da ke sauya ya kamata a kasance cable-through type.
2.3.2 Idan tsarin amfani na bushings bai fi 630A ko ina voltage bai fi 220kV, hanyoyin da ke sauya ya kamata a kasance conductor rod type.
2.4 Zaɓin da Karkashin Na'amintar da Transformer Ya Amfani
2.4.1 Idan yanayin da transformer ya amfani na da karkashin daidai, bushings na standard specification da mai sauri ya bayar da shi ya kamata a zaɓi.
2.4.2 Idan yanayin da transformer ya amfani na da ci gaba da 1000m, bushings da suka sauyi da tsarin inganci na baya da suka sauyi da GB/T4109 ya kamata a zaɓi. Wannan babu da shiga cewa wannan babu da bushings da suka shiga oil ko SF6 medium, ci gaban da suka sauya da breakdown field strength da flashover voltage bai canza saboda ci gaba, saboda haka ba a buƙace da sukan inganci ba.
Ci gaban da inganci na baya na bushings bai canza saboda ci gaba, kuma bai buƙace da sukan inganci ba. (Note: Saboda haddadin da aka da a breakdown strength da flashover voltage wajen abubuwan da suka shiga medium, bushings da ake amfani a cikin ci gaban da biyu bai iya duba da testing a ci gaban da biyu don tabbatar da cewa an yi sukan inganci na baya ta shahara. Saboda haka, mai sauri da bushings ya kamata a nuna cewa sukan inganci na baya ta shahara.)
Voltage na maxima na power grid systems zai iya kasance mafi Um/√3. Idan wannan yanayin ba ta fi 8 hours cumulatively within any 24-hour period and 125 hours annually, bushings ya kamata a amfani a cikin ci gaban da voltage values:
Wannan da voltage na amfani zai iya kasance mafi ma'anar da aka bayar da shi, bushings da suka sauya da umurci masu Um mafi ya kamata a zaɓi.
2.4.4 Don transformers da suka sauya da seismic performance requirements, dry-type bushings ya kamata a zaɓi.
2.5 Zaɓin da Karkashin Tsarin Insulation Medium na Transformer
2.5.1 Idan tsarin insulation medium na baya na transformer ya samu transformer oil da suka sauya da overhead lines na baya, bushings na oil-air structure ya kamata a zaɓi.
2.5.2 Idan tsarin insulation medium na baya na transformer ya samu transformer oil da suka sauya da external GIS, dry-type bushings na oil-SF6 structure ya kamata a zaɓi.
2.5.3 Idan tsarin insulation medium na baya na transformer ya samu SF6 gas da suka sauya da air na baya, dry-type bushings na SF6-air structure ya kamata a zaɓi.
2.5.4 Idan tsarin insulation medium na baya da baya na transformer ya samu transformer oil, bushings na oil-oil structure ya kamata a zaɓi.
2.6 Zaɓin da Karkashin Applications na Converter Transformer Valve
Don valve-side AC/DC bushings, resin-impregnated paper type AC/DC bushings ko SF6-filled oil-paper capacitance type AC/DC bushings ya kamata a zaɓi.
2.7 Zaɓin da Karkashin Applications na Oil-Immersed Smoothing Reactor
Don oil-immersed smoothing reactors, resin-impregnated paper type DC bushings ko SF6-filled oil-paper capacitance type DC bushings ya kamata a zaɓi a valve hall side.
2.8 Zaɓin da Karkashin Applications na Online Monitoring
Idan ake yi online monitoring don bushings, bushings da suka sauya da voltage taps ya kamata a zaɓi.
