Misali na Aiki don Tsarin Turbin Mai Karkashin Maye

Anjalin Da Turbinar da Tashin Kula da Kyaukuta

1. Bin Da Turbinar Da Tashin Kula (Non-Porcelain Bushing)

1.1 Gaskiya na Tashin Kula

Saka tashin kula zuwa hagu a kan gida ko a kan dabbobi. Yadda gaskiyar da ke tashin kula da tap/french ta aiki a cikin megohmmeter 2500V. Duk da yake ba zai ci gaba da rarrabe masu ilimi da suka samu shi a cikin yanayi mai kyau. Idan an yi amfani da tashin kula da kapasiti mai tsarki da 66kV zuwa waɗanda suke da tap, yadda gaskiyar da ke bayan "tashin kula mai tsarki" da flange a cikin megohmmeter 2500V. Wannan balo ba zai iya kasance 1000MΩ.

1.2 Yadda Ake Samun Gaskiya na Tashin Kula (Dielectric Loss Measurement)

Yadda ake samun tan delta (dissipation factor) da ma'anafiyar tashin kula da tap a cikin yadda ake fadada kasa, a nan tabbatar da ake sa shi a cikin magana. Zaɓi wata 10kV don abin daƙi. Zaka iya saka tashin kula na gaskiya da take aiki a cikin insulating tape, zaɓi suna da wurare da wasu abubuwa masu ilimi da karamin lalace, a nan tabbatar da ake fadada kasa don in taimaka da ayyukan da ba a yi abin daƙi ba. Duk da yake ba zai ci gaba da rarrabe masu ilimi da suka samu shi a cikin yanayi mai kyau, kuma yana da kyau a cikin handover standards.

2. Bin Da Tap-Changer Na Tashin Kula Don Yadda Ake Yi Abin Daƙi (On-Load Tap-Changer Inspection and Testing)

Bin da tarihin abin daƙi na tashin kula da tap-changer, yadda ake samun ma'anafiyar tashin kula da lokacin da aka yi abin daƙi. Duk da yake ba zai ci gaba da rarrabe masu ilimi da suka samu shi a cikin yanayi mai kyau, kuma yana da kyau a cikin handover standards.

3. Yadda Ake Samun Gaskiya na DC Resistance na Windings Ta Tashin Kula

Yadda ake samun gaskiya na DC resistance na tashin kula mai tsarki a cikin duk tushen tap da kusa a cikin tashin kula mai karamin lalace. Idan akwai neutral points, yana da kyau a yi samun gaskiya na DC resistance na tashin kula mai tsarki. Rike hawa na zamani a cikin lokacin da aka yi samun, don in taimaka da in tara da rarrabe masu ilimi. Duk da yake ba zai ci gaba da rarrabe masu ilimi da suka samu shi a cikin yanayi mai kyau, kuma yana da kyau a cikin handover standards.

4. Yadda Ake Samun Ratio na Voltage Da Tushen Tap Duka

Saka tushen ratio tester zuwa tashin kula mai tsarki da karamin lalace na tashin kula mai uku. Yadda ake samun ratio na voltage da tushen tap duka. Ba zai iya ci gaba da rarrabe masu ilimi da suka samu shi a cikin yanayi mai kyau, kuma yana da kyau a cikin handover standards. Idan an yi amfani da tashin kula mai uku, ya kamata a yi samun ratio na high-medium, medium-low windings.

5. Bin Da Tushen Connection Group Na Uku Da Polarity Na Tashin Kula Mai Tsarki

Abubuwan da aka samu ba zai ci gaba da rarrabe masu ilimi da suka samu shi a cikin yanayi mai kyau, kuma yana da kyau a cikin handover standards.

6. Yadda Ake Samun Insulating Oil Don Yadda Ake Yi Abin Daƙi

Ba za a yi samun oil har sai an yi aiki a cikin tashin kula da karamin lalace, kuma a yi aiki a cikin lokacin da aka samu. Ba sa samun oil, zaɓi suna da wurare da abubuwan da ake samu, kuma bazu a nan tabbatar da ake fadada kasa don in taimaka da ayyukan da ba a yi abin daƙi ba.

7. Yadda Ake Samun Gaskiya na Insulation Resistance, Absorption Ratio Ko Polarization Index

Duk abubuwan da ake samu ba zai ci gaba da rarrabe masu ilimi da suka samu shi a cikin yanayi mai kyau, kuma yana da kyau a cikin handover standards. Idan an yi amfani da polarization index, tabbatar da cewa short-circuit current na megohmmeter ba zai ci gaba da 2mA. Rike hawa na zamani a cikin lokacin da aka yi samun, don in taimaka da in tara da rarrabe masu ilimi. Duk da yake ba zai ci gaba da rarrabe masu ilimi da suka samu shi a cikin yanayi mai kyau, kuma yana da kyau a cikin handover standards. Abubuwan da za a yi samun sun hada da: high-(medium+low+ground), medium-(high+low+ground), low-(medium+high+ground), total-ground, core-(clamping+ground), da clamping-(core+ground). Misali, idan an yi amfani da high-(medium+low+ground), saka tushen uku na tashin kula mai tsarki da karamin lalace (idam a nan), kuma ground all other parts, saka tushen uku na megohmmeter zuwa tashin kula mai tsarki, kuma saka tushen ground zuwa ground.

8. Yadda Ake Samun tan delta (Dissipation Factor) Na Windings Ta Tashin Kula

Yadda ake samun tan delta (dissipation factor) na tashin kula a cikin lokacin da aka yi samun, a nan tabbatar da ake fadada kasa don in taimaka da ayyukan da ba a yi abin daƙi ba. Abubuwan da za a yi samun sun hada da: high-(medium+low+ground), medium-(high+low+ground), low-(medium+high+ground), total-ground. A nan tabbatar da ake fadada kasa don in taimaka da ayyukan da ba a yi abin daƙi ba. Rike hawa na zamani a cikin lokacin da aka yi samun, don in taimaka da in tara da rarrabe masu ilimi. Duk da yake ba zai ci gaba da rarrabe masu ilimi da suka samu shi a cikin yanayi mai kyau, kuma yana da kyau a cikin handover standards. Idan an yi amfani da tashin kula, ya kamata a yi samun tan delta (dissipation factor) a cikin lokacin da aka yi samun, a nan tabbatar da ake fadada kasa don in taimaka da ayyukan da ba a yi abin daƙi ba.

9. Yadda Ake Samun DC Leakage Current Na Windings Ta Tashin Kula

Yadda ake samun leakage current na tashin kula a cikin lokacin da aka yi samun, a nan tabbatar da ake fadada kasa don in taimaka da ayyukan da ba a yi abin daƙi ba. Abubuwan da za a yi samun sun hada da: high-(medium+low+ground), medium-(high+low+ground), low-(medium+high+ground). Rike hawa na zamani a cikin lokacin da aka yi samun, don in taimaka da in tara da rarrabe masu ilimi. Duk da yake ba zai ci gaba da rarrabe masu ilimi da suka samu shi a cikin yanayi mai kyau, kuma yana da kyau a cikin handover standards.

10. Bin Da Abin Daƙi Na Electricity

10.1 Tatsuniya na Winding

Don haka, don zai masu karkashin 35kV da kuma kadan, yana fi sani amfani da tsarin tatsuniya na impedance na low-voltage short-circuit. Don zai masu karkashin 66kV da kuma gaba, yana fi sani amfani da tsarin frequency response analysis don cin bayanai na characteristic spectra na winding.

10.2 Tatsuniya na AC Withstand Voltage

Bayyana tatsuniya na AC withstand voltage a terminali na transformer ya danganta da amfani da power frequency voltage ko kuma induced voltage testing methods. Idan mumkin, tushen resonance induced voltage testing tana da muhimmanci don haɗa take da ma'adinni equipment na tatsuniya. Muhimmiyar points na neutral na transformers masu karkashin 110kV da kuma gaba zai bayyana tatsuniya na AC withstand voltage da dama. Rukunin voltage na tatsuniya zai iya tabbata da standards na handover.

10.3 Tatsuniya na Long-Time Induced Voltage da Partial Discharge Measurement

Don zai masu karkashin 220kV da kuma gaba, za a bayyana long-time induced voltage tests da partial discharge measurement a kan lokacin nan shiga. Don zai masu karkashin 110kV, partial discharge tests tana da kyau idan ana neman cewa insulation ya jawo. Tatsuniyan da ke yi suna wani internal insulation defects da ba suka dole a cikin transformer.

10.4 Tatsuniya na Impact Closing da Rated Voltage

Yi amfani da abubuwa na planin startup.

10.5 Tatsuniya na Phase Verification

Tattara sequence na phase na transformer, wanda yana da kyau ita ce ta shahara da grid phase sequence.