4 MVA Transformer Substation-34.5 / 0.48 KV|Nicaragua 2026

01 Gabaɗaya

1.1 Bayanin Aikin

3500/4000 kVA unit substation transformer an isar da shi zuwa Nicaragua a cikin 2026. Ƙarfin wutar lantarki shine 3500/4000 kVA tare da sanyaya ONAN/ONAF. Babban ƙarfin lantarki shine 34.5 kV tare da ± 2 * 2.5% tapping range (NLTC), ƙananan ƙarfin lantarki shine 0.48 kV, sun kafa ƙungiyar vector na YNd11.

An bai wa SCOTECH lambar yabo ta hanyar samar da wutar lantarki ta hanyar samar da wutar lantarki ta La India Mining Plant (1.4 Mtpa) a Nicaragua. Kamfanin yana cikin yankin La Cruz de la India, Sashen León, Nicaragua, kuma ya zama wani ɓangare na aikin injiniya na 34.5 kV, yana ba da ƙarfin farko don sarrafa ma'adinan da ayyukan samarwa.

Kayan aikin da aka kawo a ƙarƙashin wannan aikin shine mataki ɗaya na naúrar kVA 4000 - sama tafsiri, lamba mai lamba 871-TX-001, mai ƙididdigewa 480 V / 34.5 kV, 3500/4000 kVA, ONAN/ONAF sanyaya, ƙungiyar vector YNd11. Mai taswira yana haɓaka fitowar 480 V daga Cummins KTA38 janareta sets (720 kW ci gaba da kowane) zuwa 34.5 kV kuma yana ciyar da babban bas ɗin sauyawa (871-SB-100). Yana aiki a matsayin muhimmiyar hanyar haɗin kai tsakanin tashar wutar lantarki ta ma'adinan da tsarin rarraba 34.5 kV, kuma amincinsa kai tsaye yana rinjayar ci gaba da samarwa a masana'antar sarrafawa.

Dangane da yanayin yanayin aiki na wurare masu zafi a Nicaragua - babban yanayin yanayi, matsanancin zafi na dangi, da lalata mai tsanani - SCOTECH sun ɗauki matakan da aka yi niyya a ƙirar lantarki, tsarin insulation, tanki anti-rufin lalata, da kariyar rufewa. An ƙera tafsirin da masana'anta{4}} an gwada shi daidai da IEEE C57.12.00 / C57.12.90 da IEC 60076. Ƙimar wadata ta ƙunshi kashe -mai canjin kewayawa a gefen HV, na'urorin lantarki na yanzu sun haɗa cikin HV da LV bushings, PT100 na'urar gano zafin jiki, na'urar gano yanayin zafi, PT100 da yanayin zafin jiki sauran cikakken kariya da na'urorin haɗi, tare da akwatin marshalling IP55 don dacewa da wayoyi da kiyayewa.

Bugu da ƙari, la'akari da dogon{0} sufuri na nisa zuwa Amurka ta Tsakiya, SCOTECH ta shigar da alamun tasirin Shock Watch 2 a maki uku (X, Y, Z) kamar yadda ake buƙata, don saka idanu na taswira a duk lokacin sufuri. An yi SFRA (Binciken Amsa Mitar Matsala) kafin isar da masana'anta, kuma an samar da fayil ɗin tushen * .frax don a iya kwatanta ma'aunin rukunin yanar gizon lokacin isowa don tabbatar da cewa babu nakasar iska ko lalacewar tsarin da ta faru yayin jigilar kaya. Wannan aikin yana nuna cikakken ikon SCOTECH don samar da ƙa'idodi na musamman, masu dacewa, da sufuri{6}mataki mai kariya{7} sama da hanyoyin samar da wutar lantarki don ayyukan masana'antar ma'adinai ta ƙasa da ƙasa.

1.2 Ƙayyadaddun Fasaha

3500/4000 kVA naúrar substation taswira ƙayyadaddun ƙayyadaddun bayanai da takardar bayanai

1.3 Zane

3500/4000 kVA naúrar substation mai canzawa zane zane da girman.

02 Masana'antu

2.1 Bakin Numfashi

Na'urar taranfoma tana sanye take da raga{0} nau'in gadi mai cire ruwa don daidaita matsewar iska a ciki da wajen tanki, yana hana nakasar tanki ko matsananciyar matsananciyar wahala sakamakon bambancin yanayin zafi. Gel ɗin silica a cikin mai numfashi yana ɗaukar danshi daga iskar da ke shiga cikin tanki, yana tabbatar da cewa mai mai hana ruwa yana kula da aikin lantarki mai kyau. An ɗora numfashi a saman tanki kuma an haɗa shi ta hanyar bugu zuwa bawul a wani tsayi mai tsayi daga bene, yana sauƙaƙe dubawa na yau da kullum da maye gurbin silica gel. Kafin shigarwa, dole ne a duba bututun gilashin da gel ɗin silica, a gwada aikin hatimi, da isassun man taswira cike da layin matakin mai kafin ƙaddamarwa.

2.2 Masu sanyaya

An sanye da injin taswira tare da magoya baya masu sanyaya don aikin ONAF don haɓaka ingancin sanyaya radiator. Lokacin da mai ko yanayin iska ya tashi zuwa ƙimar da aka saita, magoya baya suna farawa ta atomatik, suna canza taswira daga ONAN 3500 kVA zuwa ONAF 4000 kVA aiki. Motocin fan suna da kariya ta IP55, dace da amfani da waje. The impellers daya ne - yanki na aluminum mutu simintin gyare-gyare ba tare da matsala lalata ba, kuma masu gadin fan an tsara su sosai don biyan buƙatun OSHA. Ana iya shigar da magoya baya kai tsaye a kan radiators ko gyarawa tare da kayan haɗi masu hawa, tare da ƙwanƙwasa sukurori daidai don hana girgiza.

2.3 Shock Watch

Kamar yadda dole ne a yi jigilar tasfofi a nesa mai nisa daga China zuwa wurin a Amurka ta Tsakiya, SCOTECH ya sanya alamun tasirin Shock Watch 2 a maki uku (X, Y, Z) kamar yadda ake buƙata, don lura da girgiza da girgiza a duk lokacin sufuri. Waɗannan na'urori suna taimakawa gano duk wani mummunan tasiri yayin wucewa wanda zai iya haifar da lalacewar tsarin ciki, yana tabbatar da yanayin yanayin kayan aiki lokacin isowa. Bayan kayan aiki sun isa wurin, dole ne a yi gwaje-gwajen lantarki da sakamakon SFRA idan aka kwatanta da tushen masana'anta don tabbatar da cewa babu nakasar iska ko lalacewar tsarin da ta faru yayin jigilar kaya.

2.4 Babban -Masu Canjin Wutar Lantarki na Yanzu

Babban - gefen ƙarfin lantarki (34.5 kV) an sanye shi da 3 × 75/1 A halin yanzu tasfotoci, kowannensu yana da muryoyi masu zaman kansu guda 2: aji 0.5/15 VA, aji na kariya C100 / 15 VA. An haɗa CTs a cikin gandun daji na HV don auna HV na yanzu da kariyar relay, wanda ya dace da IEEE C57.13 / IEC 61869-2. Duk CTs suna da ƙimar halin yanzu na 1 A, wanda ya dace da relays na kariya na REX615.

2.5 Ƙananan -Masu Canjin Wutar Lantarki na Yanzu

Ƙarƙashin gefen wutar lantarki (480V) yana sanye da 3 × 5000/1 A halin yanzu na'urorin wuta, kowannensu yana da nau'ikan nau'i biyu masu zaman kansu: aji na 0.5 / 30 VA, aji na kariya C100 / 30 VA. An haɗa CTs a cikin gandun daji na LV don ma'aunin LV na yanzu da kariyar gudun ba da sanda. Tunda iskar LV delta ce{12}} haɗe (ba tsaka tsaki), babu buƙatar CT tsaka-tsakin LV. Duk CTs suna da ƙimar halin yanzu na 1 A na biyu, wanda ya dace da relay na kariya na REX615 da aka sanya a cikin Eaton XGIS 34.5kV switchgear.

2.6 Sifili -Tsarin Mai Canjawa na Yanzu

Tsakanin HV an sanye shi da 1 × 75/1 A halin yanzu mai canzawa, ajin kariya C100 / 15 VA, da ake amfani da shi don gano sifirin tsarin - jerin halin yanzu da bayar da nuna bambanci ga kariyar ƙasa. An ɗora CT a waje akan tashar tsaka tsaki ta HV, tana daidaitawa tare da tsarin kariyar ƙasa don tabbatar da ingantaccen aiki na na'urorin kariya yayin kurakuran asymmetrical kamar kurakuran ƙasa guda ɗaya{7}.

2.7 Mai Nunin Zazzabi Mai Guda

Nunin zafin jiki na Winding (WTI) yana amfani da fasahar simulation ta thermal, a kaikaice yana auna mafi zafi mafi zafi{0}}tabbatar da girman zafin mai tare da hawan zafi daidai gwargwado. Kayan aiki nau'in bugun kira ne ko mai nuna alama, sanye take da abubuwan ganowa na PT100 da ƙararrawa da lambobin tafiya, tare da matakin kariya wanda ke hana ƙazanta yayin canjin zafin jiki na batsa. Ana shigar da WTI da mai nuna zafin jiki akan mai canzawa iri ɗaya, wanda za'a iya karantawa daga tushe na mai canzawa, kuma saka idanu aƙalla madaidaitan ƙimar zafin jiki masu zuwa: ƙararrawa don zafin iska da zafin mai; Lambobin balaguron balaguro suna aiki akan mai watsewar gefe na HV (GIS compartment 34.5 kV) kuma a gefen LV (480V) mai watsewar iska (ACB) babban maɓalli.

2.8 Iskar Zazzabi CT

WTI yana buƙatar siginar halin yanzu daidai da nauyin da ake ɗauka don fitar da kayan dumama na ciki da kwaikwayi bambancin zafin mai na tagulla{0}. Ana samar da wannan siginar na yanzu ta hanyar mai canzawa na yanzu, yana ba da damar WTI don nuna zafin iska a ainihin lokacin yayin da nauyin ya bambanta. A cikin wannan aikin, ana ɗaukar siginar daga ma'aunin ma'aunin wutar lantarki na HV na yanzu, an canza shi ta hanyar na'urar transducer zuwa wani aiki na yanzu, kuma an ciyar da shi zuwa mai sarrafa zafin jiki don tabbatar da nunin zafin jiki ya dace da yanayin kaya.

2.9 Akwatin Tasha

Ana sanye take da akwatin tashar tashar BCT don daidaita wayoyi na biyu na MV/LV na yanzu da siginar taimako, tare da kariya ta IP55, wanda aka ɗora akan bangon gefen tanki. Akwatin tashar yana ƙunshe da ɓangarori na yanki tare da isasshen ƙarfin don daidaitawa: 6 HV CT windings na biyu (2 cores × 3 phases), 6 LV CT windings na biyu (2 cores × 3 phases), 1 tsaka tsaki CT na biyu, 6 PT100 abubuwan zafin jiki, da lambobin sadarwa daga Buchholz relay, thermometers, ma'aunin ma'aunin ma'aunin zafi. Ana gano duk na'urorin haɗi daban-daban kuma an haɗa su zuwa akwatin tashar don dacewa da wayoyi da kiyayewa.

2.10 Tafarnuwa

An sanye da tafsirin da ƙafafu a gindi don gajeriyar motsi na nisa da sanyawa yayin shigarwar rukunin yanar gizon. An tsara tsarin hawan dabaran don jure jimillar nauyi da buƙatun sufuri na na'ura mai canzawa, yana tabbatar da motsin da ya dace lokacin da aka sanya kayan aiki a wurin ma'adinan.

03 Gwaji

Samfurin ya kammala duk gwaje-gwaje na yau da kullun da gwaje-gwaje na musamman, gami da gwaje-gwaje na rabo, polarity da gwaje-gwajen alaƙa na zamani, ma'aunin juriya, gwajin juriya, gwajin ƙarfin wuta, gwaje-gwajen injina, gwajin insulation akan na'urar taimako da wayoyi, hasarar tashin hankali da ma'aunin halin yanzu, hasarar nauyi da ma'aunin ƙarfin lantarki, sifili gwajin jerin sauti, yuwuwar gwaji mai ƙarfi, haifar da gwaji mai ƙarfi aunawa, zafin jiki{1}}gwajin tashi, gwajin ƙarfin kuzarin mai, da gwajin matsa lamba. Bayanan da aka auna sun nuna babu - asarar nauyi na 2.748 kW, asarar nauyi na 25.797 kW, impedance na 6.90%, dacewa da biyan bukatun 99.49%, matakin sauti na ONAN na 60.3 dB, ONAF sautin sauti na 62.6 dB, sama{10} zafin jiki na H. 53.2 K, da LV mai juyi zafin zafin jiki na 49.5 K, duk haɗuwa ko ƙetare buƙatun ƙayyadaddun fasaha. An yi SFRA kafin isar da masana'anta da kuma * .frax tushen fayil ɗin da aka tanadar don kwatanta wurin don tabbatar da cewa babu nakasar iska da ta faru yayin jigilar kaya.

04 Yanar Gizo da Takaitawa

Za a shigar da mai canzawa a wurin ma'adinan a cikin yankin La Cruz de la India, Sashen León, Nicaragua, a tsayin mita 300, tare da matsakaicin yanayin zafi na digiri 35, matsakaicin yanayin zafi na 95%, sabis na waje, da yanayin girgizar ƙasa UBC3. SCOTECH ya keɓance tsarin gaba ɗaya daga ƙirar lantarki, daidaitawar insulation, anti -rufin lalata, da na'urorin haɗi zuwa kariyar sufuri, tare da cikakkiyar kariya, saka idanu, da matakan sa ido na sufuri don tabbatar da tsayin daka- aiki mai tsayi a cikin yanayin zafi mai tsananin lalacewa. Wannan aikin yana nuna cikakken ikon SCOTECH don samar da ƙa'idodi na musamman, masu dacewa, da sufuri{8}}mataki mai kariya{9}} sama da hanyoyin samar da wutar lantarki don ayyukan ma'adinai na ƙasa da ƙasa.