Labarai

I. Gabatarwa: Bukatar Gaggawa ta Kariya a Yanayin DC Mai Yawan Wutar Lantarki da Babban Darajar Maɓallin Keɓewa na DC

Tare da saurin haɓaka sabbin makamashi, ana amfani da tsarin DC mai ƙarfin lantarki mai yawa (HVDC) sosai a fannin ɗaukar hoto (PV), ajiyar makamashi da jigilar jirgin ƙasa. Aikinsu mai aminci yana da matuƙar muhimmanci, domin alkiblar HVDC da rashin sifili na halitta suna sa keɓewa da kariyar lahani ƙalubale. Saboda haka, kayan aikin keɓewa masu inganci da inganci suna da mahimmanci.

A matsayin babbar na'urar kariya ta HVDC,Maɓallin Keɓewa na DC(maɓallin cire haɗin DC) yana ware da'irori a zahiri, yana yanke kurakurai, kuma yana tabbatar da aminci. Ba kamar maɓallan AC ba, an ƙera shi musamman don arcs na DC masu wahalar kashewa, kuma aikin sa a ƙarƙashin babban ƙarfin lantarki kai tsaye yana ƙayyade matakan kariyar tsarin.

Wannan rubutun yana bayani ne akanMaɓallin Keɓewa na DCNasarorin aiki da aminci, suna nazarin mahimmancinsa a cikin kariyar HVDC don jagorantar zaɓin aikace-aikace.

II. Nasarar Aiki: Daidaita da Yanayi Mai Yawan Wutar Lantarki

Yanayin HVDC yana buƙatar babban aikin maɓallan keɓewa, gami da juriya mai ƙarfi da kuma ingantaccen danne baka. Maɓallin keɓewa na DC ya cimma nasarori biyu don biyan waɗannan buƙatu.

A cikin juriya mai ƙarfi, sabuwar ƙarni tana da haɓakawa na tsari da kayan aiki, wanda ya dace da 1500VDC da ƙasa (kuma sama da haka don ayyuka na musamman). Rufewa mai ƙarfi da ingantattun hulɗa suna hana lalacewa. Dangane da "Matsakaicin Musamman da Bukatun Takaddun Shaida don Maɓallin Keɓewa na DC don Aikace-aikacen Photovoltaic", maɓallan da suka dace da IEC 60947-3 suna aiki daidai a kan ƙarfin lantarki mai ƙima, tare da hauhawar zafin mai sarrafa jan ƙarfe ≤60K.

Don yin aiki mai karyewa, fasahar kashe wutar lantarki mai ƙarfi da kuma fasahar kashe wutar lantarki mai yawa suna da sauri suna danne arcs na DC (waɗanda ba su da hanyar haɗi ta sifili). Misali, ABB Emax series switches suna samun 1500V DC / 100kA lafiya, suna guje wa kurakurai.

Waɗannan haɓakawa sun karya ƙa'idodin sauyawa na gargajiya, suna tabbatar da aminci ga ayyukan HVDC.

III. Inganta Aminci: Kwanciyar Hankali na Dogon Lokaci

Bayan aiki, sabuwar DC Isolation Switch ta inganta aminci, tana magance gajeriyar rayuwar sabis da matsalolin kulawa mai yawa a cikin mawuyacin yanayi.

Haɗuwa mai ƙarfi da ingantaccen watsawa yana ƙara tsawon rayuwar injina zuwa ayyuka sama da 10,000, wanda ke rage kulawa da kuɗaɗen gyarawa—wanda ya dace da manyan ayyukan adana wutar lantarki da makamashi.

Tare da kariyar IP66, yana tsayayya da yanayin zafi mai tsanani (-40℃ zuwa 85℃), danshi da feshin gishiri, yana tabbatar da dorewar aikin waje/masana'antu.

Haka kuma ya cika ƙa'idodin IEC 60947-3 da GB/T 14048.3, yana tabbatar da aminci da bin ƙa'idodi.

IV. Daidaita Cikakkiyar Yanayi

Tare da nasarori biyu, ana amfani da DC Isolation Switch sosai a cikin filayen HVDC na asali: ɓangarorin PV na DC (keɓewa yayin gyarawa), tsarin adana makamashi (keɓewa da canza baturi), da kuma samar da wutar lantarki ta hanyar jigilar jirgin ƙasa/masana'antu ta DC (yanke lahani).

V. Nassoshi

1. "Ka'idoji na Musamman da Bukatun Takaddun Shaida don Makullan Keɓewa na DC don Aikace-aikacen Photovoltaic" — Ƙungiyar Masana'antar Kayan Lantarki ta China

2. IEC 60947-3 Ma'auni: Maɓallin juyawa da na'urar sarrafawa mai ƙarancin ƙarfin lantarki — Kashi na 3

3. Littafin Jagorar Samfurin Canjin Keɓewa na ABB Emax Series DC

VI. Tambayoyin da ake yawan yi akai-akai

T1: Menene babban bambanci tsakanin makullan keɓewa na DC da AC? A1: Makullan DC suna amfani da na'urar kashe baka ta musamman (misali, bugun maganadisu) don makullan DC masu wahalar kashewa; makullan AC suna dogara ne akan makullan AC sifili.

T2: Waɗanne matakan ƙarfin lantarki ne za a iya daidaita su da su? A2: 1500VDC da ƙasa; wasu samfura suna tallafawa manyan matakai don ayyuka na musamman.

T3: Yadda za a tabbatar da aminci a cikin mawuyacin yanayi? A3: Kariyar IP66, kayan da ke jure tsatsa da kuma ingantaccen tsari mai jure wa yanayi mai tsanani.