Masana'antar da Masana'ar Votaji na Iya Yawanci da Amsa a Fanin HKSSPZ-6300/110 Arc Furnace Transformer

Na iya kayayyakin da take da HKSSPZ-6300/110 na tashar kumban:

Sai mai suna S = 6300 kVA, tsari mai suna U₁ = 110 kV, tsari mai biyu U₂ = 110–160 V, yadda ake gaba YNd11, an yi hanyoyin duka karamin tushen adadin da ke mata (karamin da ke faru da karamin da ke rufe), tare da 13 zabe na on-load tap changing. Tushen da ake magance: HV/HV neutral/LV, LI480AC200 / LI325AC140 / AC5.

An yi tashar kumban da dual-core series voltage regulation design, tare da "8"-shaped low-voltage winding configuration. Shikakken bayanin wannan tashar kumban ta shahara a Figure 1.

Shawarwari na bincike: zabin zabe ta sa 13; 10 kV ta shirya zuwa Am, Bm, Cm; tare da K = 2, an nuna faɗi A (faɗi B da C ana ciki). An samu ma'ana: UZA = K × 10 = 20 kV, UG₀ = K × 110 / √3 ≈ 63.509 kV, UGA = 3 × 63.509 = 190.5 kV (95% na suna), UAB = 190.5 kV, frequency = 200 Hz.

Ba a yi shiga binciken da shikakken bayanin, an yi binciken na induced voltage test. Idan UZA ta shirya zuwa 4000–5000 V, an samun "crackling" corona discharge sounds a nan da suka shiga tushen terminal low-voltage, tare da jiragen ozone. Babban lokacin, an samun PD levels ta fi 1400 pC. Amma, an samun tsari mai daidai a nan da suka shiga tushen terminal low-voltage. Daga baya, an yi rawa da muhimmanci na material terminal low-voltage ko tushen 200 Hz test frequency a kan resin terminal. Idan a yi binciken biyu da 50 Hz power source a nan da suka shiga tsari (4000–5000 V), an samun abubuwan da aka samu, don haka an yi rawa da tushen 200 Hz frequency.

An yi amfani da shikakken bayanin da shiga binciken. An samun cewa tushen terminal low-voltage (karamin da ke faru da karamin da ke rufe) ana ciki a nan da suka shiga tushen, kuma a nan da suka shiga tushen da ake gaba da delta ko star configuration idan ake gaba da furnace. Idan a yi binciken na induced voltage, ba a yi gaba da tushen terminal low-voltage a nan da suka shiga tushen da ake gaba da delta ko star, ko kuma a yi gaba da ground—don haka an yi gaba da tushen floating potential state. Zan iya cewa tushen floating potential ne babban abu?

Don a yi amfani da wannan rawa, an yi gaba da x, y, da z terminals tare da ake gaba da ground da kyau, kuma an yi binciken mafi shiga. Abubuwan da aka samu na discharge sun fuskantar. Idan a shirya tsari zuwa 1.5 times, PD ya fi 20 pC. An shirya tsarin zuwa 2 times, kuma an yi nasarar binciken na induced voltage withstand test.

Yadda ake gaba: Don tashar kumban na dual-core series voltage-regulated furnace da tushen terminal low-voltage (karamin da ke faru da karamin da ke rufe) ana ciki a nan da suka shiga tushen, idan ba a yi gaba da tushen ground da kyau, zan iya cewa tushen floating potential ne babban abu da ya jawo abubuwan da aka samu. Saboda haka, idan a yi binciken na induced voltage, x, y, da z terminals ya kamata a yi gaba da ground da kyau don iya haɓaka abubuwan da aka samu.