1000 KVA Railroad Transformer-66/11 KV|South Africa 2025

01 Izugbe

1.1 Nkọwa oru ngo

1000kVA power transformer e zigara South Africa na 2025. Ike nke transformer bụ 1000 kVA na ONAN jụrụ oyi. Isi voltaji bụ 66 kV na ± 2 * 2.5% tapping range (NLTC), nke abụọ voltaji bụ 11 kV, ha guzobere vector otu Dyn11.

Ihe ngbanwe ahụ na-eme ka mgbasa ọkụ na-arụ ọrụ nke ọma, yana oke ikuku ikuku nke ogo 60 na oke mmanụ mmanụ dị elu nke ogo 55 iji nọgide na-arụ ọrụ kachasị mma.

Site na mgbochi nke 5% na nnukwu arụmọrụ{1} na-eru 98.789% na ibu zuru oke (1.0 PF) yana 98.49% na 0.8 PF (ha abụọ tụrụ na ogo 75){7}} ọ na-ebelata ike ọgwụgwụ n'oge nnyefe ike. Ejiri ihe nchekwa dị mkpa na ihe nleba anya, gụnyere Buchholz relay maka nchọpụta mmejọ, mmanụ na ikuku ikuku (site na nkwado kọntaktị na mmepụta 4-20mA/RS485), ihe nleba anya mmanụ, na valve enyemaka nrụgide, ọ na-enye nchebe zuru oke megide ikpo oke ọkụ, ntapu mmanụ, na oke nrụgide. Akụkụ ndị ọzọ na-arụ ọrụ dị ka ndị na-agbanwe mgbata na-apụ apụ, valvụ na-agbapụta / ndochi, ngwaọrụ nlele mmanụ, na ihe na-ebuli elu na-eme ka ọrụ dị mma na ịnweta mmezi.

N'ịdị arọ 7700kg na mkpokọta (ibu ibu: 5700kg) na tank siri ike na ngwa ngwa, a na-emezi ihe ngbanwe a maka ntụkwasị obi na nkesa ike ụlọ ọrụ na ọnọdụ nnyefe grid. Ọ na-ejikọta ụkpụrụ ziri ezi (1.07% na 1.0 PF, 3.78% na 0.8 PF zuru ibu) yana ọtụtụ nchekwa nchekwa, na-eme ka ọ bụrụ ngwọta a pụrụ ịdabere na ya maka ọkara{7} na- mkpa ntụgharị ike voltaji dị elu.

1.2 Nkọwa nka nka

Nkọwapụta ihe ntụgharị ụgbọ okporo ígwè 1000 kVA na mpempe akwụkwọ data

1.3 Eserese

Eserese na nha ụgbọ okporo ígwè 1000 kVA.

02 Nrụpụta

2.1 LV

Ngwunye poselin dị n'akụkụ mgbanaka dị ala- na-enye ụzọ ọpụpụ maka njikọ ikuku LV. Nhazi ọdịnala a nwere ihe mkpuchi seramiiki siri ike dị elu{2} mara maka ịdịte aka dị mma na nguzogide ihu igwe. Ọ nwere onye na-eduzi etiti ma na-eje ozi dị ka interface dị oke egwu, na-eme ka ikewapụ ọkụ eletrik dị na tank na ebe njikọ a pụrụ ịdabere na ya maka bọs ma ọ bụ eriri ndị dị n'èzí.

2.2 HV Bushing

Mgbọrọgwụ nke poselin dị n'akụkụ mgbanaka dị elu- na-enye ebe ọpụpụ akpọchiri akpọchi maka njikọ ikuku HV na-abata. Ejiri ihe mkpuchi seramiiki siri ike rụ{{2}, ọ na-egosipụta ogologo creepage dị ogologo yana sistemu mkpuchi dị n'ime dị mgbagwoju anya iji nagide nrụgide ọkụ eletrik dị elu nke ukwuu. Ọrụ ya bụ isi bụ iji hụ na ịnọpụ iche na voltaji dị elu site na tank nke ala na iji nye ihe mkpuchi mkpuchi a pụrụ ịdabere na ya maka njikọ HV dị n'èzí. Elu glazed na-enye ezigbo nguzogide mmetọ maka ọrụ n'èzí.

2.3 Igbe nchịkwa

Igbe njikwa, nke na-abụkarị ihe mkpuchi ihu igwe nke etinyere na tankị nke na-agbanwe agbanwe, na-edobe ihe nchekwa, nleba anya na ngwaọrụ njikwa. Ọ nwere ihe ndị dị ka relays nchebe, njikwa mgbatụ mgbanaka, nlele ọkwa ọkwa mmanụ, yana kọntaktị mkpu. Ọrụ ya bụ isi bụ inye interface dị n'etiti, nke enwere ike ịnweta maka ijikwa ọrụ transformer, na-enye ịdọ aka ná ntị maka ọnọdụ adịghị mma, na ịkwado nlekọta na njikwa anya.

2.4 BCT Junction Igbe

Igbe njikọ BCT (Bushing Current Transformer) bụ kọmpat nke dị n'akụkụ oke ohia nke transformer. Ọ na-ejupụta ọdụ ụgbọ elu nke abụọ nke transformers dị ugbu a nke etinyere n'ime mkpuchi ohia. Igbe a na-enye ebe njikọ echekwara echekwabara na ịnweta maka ịkwọgharị ngwa -ọkwa dị ugbu a na mita mpụga, relays nchebe, na ngwaọrụ nleba anya.

2.5 Igwe ọkụ ikuku

Igwe ọkụ ọkụ na-eku ume na-enyocha ọnọdụ okpomọkụ n'ebe kacha dị ọkụ n'ime ikuku ntụgharị. Ọ nwere bọlbụ nhụta etinyere n'ime akpa a raara nye dị nso n'elu ikuku ikuku, jikọtara ya na tube capillary na nlele ọkpụkpọ dịpụrụ adịpụ nke etinyere na igbe njikwa. Nke a kpọmkwem dị oké mkpa maka nchekwa okpomọkụ, na-enyere njikwa ibu aka, na-ewepụta ihe karịrị{2}okpomọkụ, na ịmalite njikwa sistemu jụrụ oyi iji hụ na arụ ọrụ ngbanwe dị mma na ntụkwasị obi.

2.6 Buchholz Relay

The Buchholz relay bụ gas{0} ngwaọrụ nchebe arụnyere n'ọrụ etinyere n'ime ọkpọkọ mmanụ n'etiti nnukwu tank nke transformer na nchekwa nchekwa. Ọ na-achọpụta mmejọ dị n'ime site n'ịzaghachi mkpokọta gas site na mmebi mkpuchi ngwa ngwa (na-akpalite mkpu) ma ọ bụ na mmanụ mberede na-ebute site na nnukwu mmejọ (na-akpali njem ozugbo). Nke a na-enye ịdọ aka ná ntị mmalite dị egwu na nchebe megide mmejọ mmalite na nnukwu mmejọ dị n'ime.

03 Nnwale

Analysis Frequency Response Analysis (FRA) bụ usoro nyocha nke na-enyocha ịdị n'ezi ihe nke ikuku ntụgharị. Site n'ịgbanye mgbama sinusoidal dị ala{1}voltaji gafee oke ugboro ole na ole n'otu ọnụ ọnụ yana tụọ nzaghachi na nke ọzọ, ọ na-emepụta "mkpịsị aka" pụrụ iche nke ọrụ mbufe ikuku. Ọdịiche dị na mbinye aka a sitere na usoro ntọala gara aga ma ọ bụ nwanne nwanyị ikuku na-egosi mmebi nwere ike ime, dị ka nrụrụ, mbugharị, ma ọ bụ ihe atọpụrụ n'ime isi na ikuku.

04 Mbukota na mbupu

4.1 mbukota

4.2 Mbupu

05 Saịtị na nchịkọta

Na nchịkọta, ihe ngbanwe ụgbọ okporo ígwè 1.0MVA a na-ejikọta IEC 60076- ụkpụrụ kwekọrọ, ịrụ ọrụ dị elu (ruo 98.789%), nchekwa nchekwa siri ike, yana arụmọrụ kwụsiri ike, dabara nke ọma maka nkesa ọkụ eletrik dị elu na nnyefe grid. Emepụtara maka mfu dị ala{7}, ntụgharị ike a pụrụ ịdabere na ya, ọ na-eje ozi dị ka ihe ngwọta ike ntụkwasị obi maka mkpa ụlọ ọrụ - jikọọ na anyị maka ịhazigharị ma ọ bụ nkwado teknụzụ ọzọ.