Txawm hais tias koj yog ib tus kws tshaj lij hluav taws xob, tus thawj tswj hwm qhov project, lossis tus neeg yuav khoom thoob ntiaj teb muab cov kev daws teeb meem hluav taws xob, nkag siab txog lub hauv paus ntawm kev tsim hluav taws xob, cov khoom tseem ceeb / theem nrab, thiab cov txheej txheem xaim yog qhov tseem ceeb rau kev nyab xeeb, txhim khu kev qha, thiab siv hluav taws xob zoo. Cov lus qhia no rhuav tshem cov kev paub tseem ceeb ntawm cov tshuab hluav taws xob, cov khoom siv hluav taws xob thawj / theem nrab, cov phiaj xwm hluav taws xob, thiab cov kev siv hluav taws xob, tsim rau kev lag luam, kev lag luam, thiab kev siv hluav taws xob.
1. Kev Taw Qhia Txog Kev Siv Hluav Taws Xob Txheej Txheem
Lub zog hluav taws xob yog lub network ntawm cov khoom siv hluav taws xob tsim los tsim, xa tawm, faib, thiab siv hluav taws xob hluav taws xob. Nws tsim cov caj qaum ntawm cov txheej txheem niaj hnub no, txhawb txhua yam los ntawm cov chaw tsim khoom lag luam mus rau cov tsev lag luam thiab cov zej zog.
Core Functions: Kev tsim hluav taws xob (cov chaw tsim hluav taws xob), siab-voltage kis tau tus mob (daim phiaj network), nruab nrab / qis-voltage tis (substations), thiab kawg- neeg siv.
Ntsiab Cai Tsim: Kev nyab xeeb, kev ntseeg siab, kev ua haujlwm zoo, ua raws li cov qauv thoob ntiaj teb (IEC, ANSI, NEC), thiab kev ua kom muaj zog rau yav tom ntej nthuav dav.
System Classification: Muab faib uathawj systems(siab-voltage fais fab kis / faib) thiabtheem nrab systems(tswj, kev tiv thaiv, kev saib xyuas, thiab kev pab cuam circuits).
2. Kev taw qhia txog cov khoom siv hluav taws xob tseem ceeb
Cov khoom siv hluav taws xob tseem ceeb yog lub zog tseem ceeb - nqa cov khoom siv ncaj qha ua haujlwm siab -voltage, siab - lub zog tam sim no hauv kev faib khoom. Lawv muaj lub luag haujlwm rau kev xa hluav taws xob, hloov pauv, kev tiv thaiv, thiab hloov hluav taws xob.
Common Primary Cheebtsam:
Fais fab Transformers: nce / nqis voltage rau kev sib kis thiab xa tawm (xws li roj-immersed thiab qhuav- hom transformers).
High -Voltage Switchgear: Circuit Court breakers, load break keyboards, disconnectors, thiab fuse ua ke rau kev tswj fais fab thiab kev tiv thaiv txhaum.
Busbars: Conductive bars rau centralized fais fab faib nyob rau hauv switchgear thiab substations.
Surge Arresters: Tiv thaiv cov cuab yeej los ntawm xob laim ntaus thiab hloov overvoltages.
Tam sim no / Voltage Transformers (CT / PT): Txuag siab tam sim no / voltage rau kev ntsuas thiab kev tiv thaiv.
Cables & Bus ducts: Insulated fais fab kis kab rau sab hauv tsev / sab nraum zoov tis.
Reactors & Capacitor: Rau kev kho lub zog zoo, kev sib haum xeeb lim dej, thiab kev txwv tam sim no.
3. Kev Taw Qhia Txog Cov Txheej Txheem Hluav Taws Xob Tseem Ceeb
Lub tswv yim tseem ceeb ntawm hluav taws xob yog qhov tsim tag nrho ntawm cov khoom siv hluav taws xob sib faib hluav taws xob, txhais tau tias cov khoom tseem ceeb txuas mus li cas kom tau raws li cov kev xav tau ntawm kev thauj khoom, cov qauv kev nyab xeeb, thiab cov kev xav tau ua haujlwm.
Common Primary Scheme Types:
Radial Distribution Scheme: Yooj yim, tus nqi- zoo, dav siv hauv cov tsev lag luam thiab tsev nyob.
Ring Main Unit (RMU) Scheme: Muaj kev ntseeg siab, tsim nyog rau cov khoom tseem ceeb nrog ob lub hwj huam mov.
Dual Power Supply Scheme: Ua kom lub zog tsis cuam tshuam rau lub luag haujlwm -cov chaw tseem ceeb (cov ntaub ntawv chaw, tsev kho mob).
Substation Main & Standby Scheme: Rau industrial substations uas muaj kev ntseeg siab yuav tsum tau.
Generator Parallel Scheme: Rau ntawm - qhov chaw tsim hluav taws xob thiab kab sib txuas.
Kev txiav txim siab tsim nyog:
Load peev xwm thiab kev nthuav dav yav tom ntej
Kev tiv thaiv kev ua txhaum cai
Fais fab mov kev ntseeg tau
Ua raws li cov cai hluav taws xob hauv zos
Kev kho yooj yim
4. Kev taw qhia txog cov khoom siv hluav taws xob thib ob
Cov khoom siv hluav taws xob thib ob yog cov khoom siv hluav taws xob tsawg-voltage auxiliary equipments uas tswj, saib xyuas, tiv thaiv, thiab ntsuas lub zog tseem ceeb. Lawv tsis ncaj qha nqa high -voltage main power, tab sis yog qhov tseem ceeb rau kev nyab xeeb thiab kev ua haujlwm tsis siv neeg.
Common Secondary Cheebtsam:
Tswj & tiv thaiv Relays: Overcurrent relays, sib txawv relays, voltage relays, thiab microprocessor-raws li kev tiv thaiv relays.
Metering & Monitoring Devices: Ammeters, voltmeters, fais fab ntsuas, lub zog ntsuas, thiab SCADA chaw taws teeb saib xyuas.
Tswj Switches & Buttons: Rau phau ntawv ua haujlwm ntawm Circuit Court breakers thiab keyboards.
Qhov taw qhia teeb & tswb: Rau kev qhia txog xwm txheej thiab ceeb toom txhaum.
PLC & Automation Controllers: Rau automated fais fab system tswj thiab chaw taws teeb ua haujlwm.
Pab Relays & Contactors: Rau lub teeb liab amplification thiab Circuit Court tswj.
Txuas Terminals & Junction Boxes: Rau kev teeb tsa theem nrab Circuit Court thaiv.
5. Kev taw qhia txog cov ntsiab cai ntawm Circuit Court thib ob
Ib lub voj voog thib ob yog qhov qis -voltage tswj, tiv thaiv, thiab saib xyuas Circuit Court uas ua haujlwm nrog lub zog tseem ceeb. Nws lub luag haujlwm tseem ceeb yog los xyuas kom muaj kev nyab xeeb, txhim khu kev qha, thiab kev ua haujlwm tsis siv neeg ntawm lub hauv paus system.
Core Functions ntawm Secondary Circuits:
Kev tiv thaiv: Ua rau cov hluav taws xob hluav taws xob cais tawm qhov tsis raug (overcurrent, luv Circuit Court, overvoltage, thiab lwm yam).
Tswj: Kev ceev / kev ua haujlwm ntawm cov khoom siv thawj zaug (hloov, pib / nres).
Saib xyuas: Real-lub sij hawm ntsuas qhov voltage, tam sim no, lub zog, thiab kub.
Tswb & Indication: Fault alerting and status display for operators.
Interlocking: Tiv thaiv kev ua haujlwm tsis zoo thiab ua kom muaj kev nyab xeeb ntawm kev ua haujlwm (xws li, tiv thaiv kev kaw ib txhij ntawm cov khoom siv fais fab dual).
Common Secondary Circuit Types:
Kev tiv thaiv Circuit Court, tswj Circuit Court, ntsuas Circuit Court, teeb liab Circuit Court, interlock circuit, thiab DC kev khiav hauj lwm fais fab Circuit Court.
6. Kev taw qhia txog kev xaiv cov khoom siv hauv Secondary Circuits
Kev xaiv kom zoo ntawm cov khoom siv thib ob yog qhov tseem ceeb rau kev ntseeg tau thiab kev nyab xeeb ntawm tag nrho lub zog hluav taws xob. Kev xaiv ua raws li cov hauv paus ntsiab lus no:
Cov Txheej Txheem Xaiv Qhov Tseem Ceeb:
Ua raws li Cov Qauv: Ua raws li IEC, ANSI, lossis cov qauv hluav taws xob hauv zos.
Matching Primary System Parameters: Rated voltage, tam sim no, thiab kev ua haujlwm ib puag ncig.
Functional Compatibility: Xyuas kom cov khoom ua haujlwm nrog kev tiv thaiv thiab tswj cov txheej txheem.
Kev ntseeg tau & Durability: Haum rau qhov chaw ua haujlwm (kub, av noo, vibration).
Maintainability & Scalability: Kev saib xyuas yooj yim thiab kev txhawb nqa rau yav tom ntej kev nthuav dav.
Tus nqi -Kev ua tau zoo: Sib npaug kev ua tau zoo thiab pob nyiaj siv.
Kev Xaiv Cov Kev Xaiv:
Xaiv cov kev tiv thaiv relays raws li lub hauv paus system txhaum tam sim no thiab kev tiv thaiv cov cai.
Xaiv cov khoom tswj nrog cov qib rwb thaiv tsev tsim nyog thiab kev sib cuag.
Sib piv cov cuab yeej ntsuas ntsuas kom raug thiab cov txheej txheem kev sib txuas lus (Modbus, Profinet, thiab lwm yam).
Xaiv cov auxiliary relays thiab contactors nrog cov coil voltages tsim nyog thiab kev teeb tsa kev sib cuag.
7. Kev taw qhia txog kev teeb tsa Circuit Court thib ob & Wiring Diagrams
Daim duab hluav taws xob txuas hluav taws xob thib ob yog cov duab kos duab ntxaws uas txhais cov hom kev sib txuas, tus lej davhlau ya nyob twg, thiab cov xov hlau tshwj xeeb ntawm tag nrho cov khoom thib ob. Nws yog lub hauv paus rau installation, commissioning, thiab txij nkawm.
Cov ntsiab lus tseem ceeb ntawm Wiring Diagrams:
Cheebtsam qhov chaw thiab davhlau ya nyob twg tus lej
Hlau specification (cross-section, rwb thaiv tsev qib) thiab xim coding
Kev sib txuas ntawm cov khoom sib txuas
Terminal block layout thiab xaim routing
Grounding thiab shielding xav tau
Ntsiab Installation & Wiring Principles:
Ua raws li Daim Ntawv Qhia Txuas Txuas: Ua kom 100% sib xws nrog cov qauv tsim.
Hlau Routing & Lub Koom Haum: Sib cais lub zog, tswj, thiab teeb liab xov hlau kom tsis txhob cuam tshuam.
Kev sib txuas ntawm Terminal: Siv crimping terminals, xyuas kom ntseeg tau kev sib cuag, thiab kos cov xov tooj kom meej.
Grounding & shielding: Ua kom zoo hauv av tswj cov txee thiab cov ntaub thaiv npog teeb liab los tiv thaiv electromagnetic cuam tshuam.
Kev Tshawb Fawb & Kev Xeem: Ua kev ntsuas txuas ntxiv, ntsuas kev ntsuas hluav taws xob, thiab ntsuas kev ua haujlwm tom qab xaim.
Ua raws li cov qauv kev teeb tsa: Ua raws li IEC 60364, NEC, lossis cov lej hluav taws xob hauv zos.
Vim Li Cas Phau Ntawv Qhia no tseem ceeb rau koj txoj kev lag luam
Rau cov neeg yuav khoom thoob ntiaj teb, cov neeg cog lus hluav taws xob, thiab cov neeg koom ua ke, kev paub txog qhov kev paub no ua kom:
Kev xaiv cov khoom siv thawj / theem nrab kom raug rau koj qhov project
Ua raws li cov qauv hluav taws xob thoob ntiaj teb thiab cov cai tswj kev nyab xeeb
Txhim khu kev tsim, kev teeb tsa, thiab kev saib xyuas ntawm lub zog xa hluav taws xob
Kev daws teeb meem raws sij hawm thiab kev kuaj xyuas yuam kev kom txo qis qis qis
Tus nqi - siv tau zoo thiab ntsuas qhov ntsuas hluav taws xob daws teeb meem rau kev lag luam, kev lag luam, thiab kev siv hluav taws xob
Txawm hais tias koj tab tom nrhiav cov khoom siv hluav taws xob rau cov chaw nres tsheb, lub chaw tsim hluav taws xob, lossis tsim cov tshuab hluav taws xob, cov lus qhia no muab cov kev paub hauv paus los xyuas kom meej tias koj lub tshuab hluav taws xob muaj kev nyab xeeb, txhim khu kev qha, thiab ua haujlwm tau zoo.