Injinia eletrik,site na nnyocha mbụ ruo itinye ọkụ

Anyị na-ewere akụkụ eletrik nke ụlọ ọrụ dum: ndepụta load na nyocha mkpa ike, incoming supply na ịtụ ogo transformer, usoro nkesa ọkụ, atụmatụ nchekwa na earthing. Ebe atụmatụ dị adị, anyị na-enyocha ya megide load dị ugbu a, ọ bụghị dịka e si mepụta ya na mbụ, ma kwuo n'ụzọ doro anya ebe ọ na-adịghịzi ezu.

• Nyocha load, demand factor na ịtụ ogo transformer
• Usoro nkesa ọkụ HT na LT, na single line diagram si na ya pụta
• Atụmatụ nchekwa na nhazi ya, nke e ji ETAP mee model
• Design earthing na nchekwa amụma, nke nha resistivity ala kwadoro
• Specification na nyocha teknịkal maka tender
• Nlekọta n'ebe ọrụ, na ịnọ ebe a na-anwale ihe mgbe ị chọrọ onye ọzọ ga-ele anya

Anyị na-ewere generator, governor, excitation na switchyard dị ka otu sistemu, n'ihi na n'obere hydro set ha na-arụ ọrụ dị ka otu. Anyị emeela commissioning n'ụlọ ọrụ dị na Ladakh na Arunachal Pradesh, ebe nlọghachi ọzọ na-ewe ọtụtụ ụbọchị, ya mere atụmatụ commissioning na ndepụta spare parts dị mkpa dịka eserese ndị ahụ.

• Nchekwa generator, excitation na nhazi voltage akpaaka
• Njikọ turbine governor na control unit
• Nhazi switchyard, nchekwa na metering
• Ngwa inyeaka nke station: nkesa LT, sistemu DC, ịtụ ogo batrị na charger
• Synchronising na njikọ grid
• Commissioning n'ebe ọrụ dị anya, nke a haziri dịka ụzọ ị nwere si dị

Nhazi, schematic, mgbakọ na atụmatụ nchekwa, nke anyị na-enye dị ka package nke onye ọrụ nkwekọrịta nwere ike iji wuo, onye nyocha nwere ike ịnabata, ndị otu nlekọta gị ga-agụkwa afọ iri site ugbu a. Anyị na-egosi mgbakọ ndị ahụ, ọ bụghị naanị ihe si na ha pụta, ka mmadụ nwee ike ịlele ihe kpatara mkpebi kama ịtụkwasị obi naanị.

• Substation ruo 765 kV, air insulated na gas insulated
• Design eletrik maka ike mmiri, coal washery, material handling na ụlọ ọrụ process
• Model sistemu ike eletrik n'ETAP na nhazi nchekwa zuru ezu
• Ntọala numerical relay, nke e nyere dị ka ndepụta dị njikere itinye n'ọrụ
• A na-emezigharị ma nyeghachi eserese mgbe ọnọdụ ebe ọrụ gbanwere

Switchyard bụ ebe ụlọ ọrụ na grid na-ezute, a na-ekpe ya ikpe n'ụbọchị abụọ: ụbọchị e tinyere ya ọkụ na ụbọchị ọ ga-ekewapụ fault. Anyị na-ebido na nhazi bay na clearance ruo atụmatụ busbar, nchekwa na earth mat, mgbe ahụ anyị na-anọ n'ebe ọrụ maka iwulite, pre-commissioning na itinye ọkụ. Air-insulated ma ọ bụ gas-insulated, yard ọhụrụ ma ọ bụ mgbasawanye n'ime nke a na-apụghị imenyụ, injinia ya bụ otu ụdị — ihe na-agbanwe bụ otu e si hazie oge a ga-agbanyụ ọkụ.

• Nhazi bay, clearance phase na section, na ibu structure
• Atụmatụ busbar — single, main na transfer, ma ọ bụ double bus — nke a họọrọ dịka ọrụ ya si dị, ọ bụghị site na omume mgbe niile
• Atụmatụ nchekwa, metering na control, ya na ntọala relay e nyere dị ka ndepụta
• Earth mat e mepụtara site na resistivity ala a tụrụ, ebe a lelere step na touch potential
• Iwulite na pre-commissioning nke isolator, breaker, CT, PT, CVT na lightning arrestor
• Itinye ọkụ, nnwale load na nnyefe e deturu ede — gụnyere mgbasawanye e mere n'ime yard nke ọkụ dị na ya

Ndị injinia nke anyị na-anọ n'ebe ọrụ ruo mgbe e tinyere ọkụ ma nyefee ya. Ebe ị nwerelarị onye ọrụ nkwekọrịta na-ewuli ihe, anyị na-elekọta ọrụ ahụ kama, nke na-adịkarị ọnụ ala ma hapụ nhazi ị nwere ka ọ dịrị. Anyị na-eji ngwa nnwale nke anyị na-anwale ihe, na-akọkwa ya ya na ọnụọgụgụ ndị a gụtara, ọ bụghị naanị akara ngafe.

• Iwulite na ịwụnye sistemu HT na LT, ma ọ bụ nlekọta onye ọrụ nkwekọrịta gị
• Nlele pre-commissioning, loop checking na nnwale arụmọrụ
• Nnwale mgbe niile na nke pụrụ iche maka transformer, switchgear, breaker na relay
• Nnwale relay nchekwa na calibration dịka ntọala a nabatara
• Itinye ọkụ, nnwale load na nnyefe e deturu ede
• Ijikọ relay na SCADA ị nwere, ma ọ bụ nke ọhụrụ

Panel na-adịgide karịa ụlọ ọrụ e mepụtara ha maka ya. Kama ịgbanwe enclosure siri ike, anyị na-agbanwe ihe merela agadi n'ime ya — relay electromechanical ka ọ bụrụ numerical, breaker a kwụsịrị imepụta ka ọ bụrụ nke a na-ere ugbu a, wiring na termination ebe ha na-ezughịzi — anyị na-enyeghachikwa schematic ka eserese wee dabara na panel ọzọ.

• A na-eji numerical relay dochie relay electromechanical, ya na ntọala ọhụrụ
• A na-eji breaker na contactor a na-ere ugbu a dochie ndị ochie
• Ịgbanwe wiring, termination na label ka ha dabara na atụmatụ e degharịrị
• Schematic e megharịrị na nnyocha nhazi ọhụrụ maka load nke taa
• A na-agbakwụnye communication ka panel ochie nwee ike ịkọrọ SCADA ihe
• A na-arụ ya n'oge a gbanyụrụ ọkụ, hazie ya dịka oge nkwụsị gị si dị

Nyocha bara uru dabere n'ihe a tụrụ atụ, ọ bụghị naanị data dị na nameplate. Anyị na-edekọ load, na-atụ power factor na harmonics ebe ha dị mkpa, na-eji thermography lelee njikọ ndị na-ekpo ọkụ n'ezie, ma na-akọ ihe mgbanwe ga-echekwa megide ihe ọ ga-efu. A na-akọ nnwale ọnọdụ transformer na switchgear n'otu ụzọ ahụ.

• Idekọ load, ịtụ power factor na harmonics
• Thermography njikọ, termination na switchgear mgbe ha nọ na load
• Nnwale ọnọdụ transformer: tan-delta, SFRA, partial discharge, ịsacha mmanụ
• Nnwale resistivity ala na ịtụ earth resistance
• Akụkọ feasibility ya na ndụmọdụ e depụtara ọnụ ahịa ya
• Inye spare parts eletrik