Fais fab System Neutral Point Grounding Modes: Ua kom tiav Cov Lus Qhia Kev Xaiv rau cov qib sib txawv

Qhov nruab nrab point grounding hom yog lub hauv paus tseem ceeb ntawm kev tsim hluav taws xob tsim, kev tiv thaiv overvoltage, kev tiv thaiv relay configuration, thiab kev ua haujlwm ruaj khov. Tsim nyog xaiv ntawm lub hwj chim system nruab nrab grounding txoj kev ncaj qha txiav tximfais fab mov kev ntseeg siab, hluav taws xob cov khoom siv hluav taws xob rwb thaiv tsev nqi, kev ua txhaum kev ua haujlwm, thiab kev nyab xeeb ntawm daim phiaj, uas yog tus txheej txheem tseem ceeb rau kev siv hluav taws xob hluav taws xob engineering, kev xaiv khoom siv hluav taws xob, thiab kev kho hluav taws xob thoob ntiaj teb.

Cov theem sib txawv ntawm qhov sib txawv, daim phiaj teev, daim ntawv thov scenarios (daim phiaj hluav taws xob hauv nroog, kab hluav taws xob hauv roob, kev faib khoom siv hluav taws xob, kev siv hluav taws xob tsawg-voltage system) sib haum rau cov hom kev ua haujlwm nruab nrab tshwj xeeb. Kev xaiv hauv av tsis raug yuav yooj yim ua rau muaj kev puas tsuaj rau cov khoom siv, ib zaug -theem grounding txhaum expansion, nquag fais fab tuag, thiab nce nqi khiav hauj lwm thiab tu. Kab lus no systematically txheeb tawm covthoob ntiaj teb mainstream neutral grounding xaiv cov qauv thiab kev lag luam zoo tshaj plaws kev coj uarau tag nrho cov qib voltage, pab txawv teb chaws fais fab engineering buyers, grid neeg cog lus, thiab hluav taws xob system designers sai sai phim qhov zoo tshaj plaws grounding tov.

 

1. Core Classification & Working Principple of Power System Neutral Grounding Modes

Tam sim no, lub tshuab hluav taws xob tseem ceeb thoob ntiaj teb tau txais peb qhov qauv nruab nrab ntawm qhov chaw ua haujlwm, txhua tus muaj cov txiaj ntsig zoo thiab cov xwm txheej siv tau, suav nrog txhua daim phiaj siv hluav taws xob siab, nruab nrab thiab qis:

• Tsis Siv Neeg Point Ungrounded Hom: Qhov nruab nrab point ntawm transformer tsis txuas nrog lub ntiaj teb. Thaum ib qho -theem grounding txhaum tshwm sim, lub kaw lus tuaj yeem ua haujlwm txuas ntxiv rau 1-2 teev yam tsis muaj kev cuam tshuam, nrog rau cov khoom siv hluav taws xob tsis tshua muaj zog txuas ntxiv, tsim nyog rau nruab nrab thiab tsis tshua muaj hluav taws xob faib cov tes hauj lwm uas ua kom muaj kev ntseeg siab ntawm lub zog hluav taws xob.
• Nruab Nrab Point Grounded ntawm Arc Suppression Coil: Cov ntsiab lus nruab nrab yog txuas nrog arc suppression coil los them cov nqi hluav taws xob uas tsim los ntawm ib zaug -theem grounding faults, extinguish grounding electric arcs, zam intermittent overvoltage and arc re-ignition, and effectively tiv thaiv kev txhaum expansion. Nws yog cov kev daws teeb meem tseem ceeb rau nruab nrab voltage nruab nrab - theem hluav taws xob kab hluav taws xob thiab cov kab hluav taws xob nyuaj.
• Neutral Point Solidly Grounded (Direct Grounded): Lub ntsiab lus nruab nrab yog txuas ncaj qha rau lub ntiaj teb yam tsis muaj impedance. Nws tuaj yeem tso tawm qhov txhaum tam sim no sai, koom tes nrog cov khoom siv tiv thaiv relay kom paub txog kev ua txhaum sai sai, txo cov khoom siv hluav taws xob, thiab siv dav hauv high voltage thiab ultra-high voltage transmission systems.

 

2. Cov Qauv Kev Xaiv Cov Qauv rau Cov Qauv Nruab Nrab Nruab Nrab los ntawm qib Voltage

Kev xaiv ntawm qhov nruab nrab point kev ua haujlwm hom nyob rau hauv cov txheej txheem fais fab tuag feem ntau yog raws li peb qhov tseem ceeb qhia:system tso cai overvoltage tus nqi, ib zaug -theem grounding capacitive tam sim no, daim phiaj kev ua haujlwm ruaj khov, ua ke nrog cov khoom siv rwb thaiv tsev nqi thiab scenario adaptability. Cov kev cai xaiv tus qauv rau txhua theem voltage yog raws li nram no:

2.1 6kV-10kV Nruab Nrab Voltage Distribution Network: Ungrounded / Arc Suppression Coil Grounding

6-10kV qhov system yog qhov siv dav tshaj plaws nruab nrab qhov hluav taws xob faib hluav taws xob hauv cov chaw ua si, thaj chaw hauv nroog, thiab cov chaw lag luam thoob ntiaj teb. Rau qib voltage no, cov cuab yeej rwb thaiv tsev yog tsim los ntawm cov kab hluav taws xob cov qauv, thiab cov nqi hluav taws xob hloov pauv los ntawm kev hloov kho hauv av yog qhov tsis txaus ntseeg.

Ua kom siab tshaj plawsfais fab mov kev ntseeg tau thiab txo cov hluav taws xob tsis tu ncua, 6-10kV fais fab daim phiaj feem ntau txais cov ntsiab lus nruab nrab tsis siv neeg hom. Thaum cov kab sib chaws loj, cov kab ntev ntev, thiab ib-theem grounding capacitive tam sim no tshaj 10A, lub kaw lus yuav tsim cov av txuas ntxiv arcs thiab ntu ntu overvoltage. Hauv qhov no,nruab nrab point grounding ntawm arc suppression coiltau txais yuav los them cov nqi hluav taws xob tam sim no, tshem tawm cov teeb meem arc, thiab xyuas kom muaj hluav taws xob txuas ntxiv thaum tsis yog - qhov ua txhaum tas mus li.

Siv tau Scenarios: Kev faib tawm hauv nroog, lub Hoobkas hauv lub tshuab hluav taws xob hauv tsev, kev tsim hluav taws xob hauv nroog, thiab lwm yam xwm txheej uas yuav tsum tau ua kom muaj hluav taws xob ntau ntxiv.

 

2.2 20kV-60kV Intermediate Voltage Grid: Tshwj Xeeb Arc Txhaum Cai Coil Grounding Hom

Lub 20-60kV lub zog hluav taws xob yog nyob rau theem hloov hluav taws xob nruab nrab ntawm qhov nruab nrab qhov hluav taws xob faib thiab qhov hluav taws xob siab, nrog rau cov yam ntxwv nruab nrab nruab nrab. Ib-theem grounding capacitive tam sim no ntawm daim phiaj no yog nruab nrab, cov qauv network yog qhov yooj yim, thiab kev txhim kho lossis txo cov khoom siv rwb thaiv tsev tsis muaj qhov cuam tshuam rau tag nrho cov nqi tsim nyog.

Comprehensively txiav txim siab overvoltage tiv thaiv, txhaum kam rau ua thiab cov nqi khiav lag luam, kev lag luam uniformly qhia txog kev saws me nyuam.nruab nrab point resonance grounding ntawm arc suppression coil. Hom no zoo kawg nkaus sib npaug ntawm cov khoom siv hluav taws xob kev ntseeg siab thiab cov khoom siv kev nyab xeeb: nws zam qhov teeb meem tsis tu ncua ntawm kev ncaj qha hauv av, thiab tseem tshem tawm cov overvoltage zais kev phom sij ntawm qhov tsis sib haum xeeb nyob rau lub sijhawm ntev - lub sijhawm ua haujlwm txhaum, dhau los ua tus qauv teeb tsa rau 20-60kV hluav taws xob daim phiaj hluav taws xob engineering.

Siv tau Scenarios: Cov phiaj xwm hauv cheeb tsam suburban fais fab nroj tsuag, thaj chaw mining fais fab mov, thiab nruab nrab - kab sib kis.

 

2.3 110kV thiab saum toj no High Voltage Transmission Grid: Solid Grounding (Tshwj xeeb Scenario nrog Arc Suppression Coil Grounding)

110kV, 220kV thiab siab dua siab voltage & ultra-high voltage fais fab daim phiaj tsom rautxo cov cuab yeej rwb thaiv tsev peev, simplifying relay tiv thaiv kev teeb tsa, thiab txhim kho kev ua txhaum kev ua haujlwm. Cov khoom siv hluav taws xob muaj hluav taws xob muaj hluav taws xob tsim hluav taws xob siab; Kev siv cov ntsiab lus nruab nrab hauv qhov sib xyaw ua ke tuaj yeem txo qhov system overvoltage qib, txo cov txheej txheem tsim hluav taws xob ntawm cov hloov pauv, hloov pauv thiab lwm yam khoom siv tseem ceeb, thiab txo qis tag nrho cov khoom siv hluav taws xob.

Cov khoom siv hauv av tuaj yeem tsim lub voj voog tam sim no ruaj khov, koom tes nrog siab - cov khoom siv tiv thaiv relay kom paub qhov chaw ua txhaum sai thiab kev sib cais, thiab sib phim cov chaw txhawb nqa xws lipuv -kab hluav taws xob tiv thaiv cov xov hlau thiab cov khoom siv rov qab tsis siv neegkom ua tiav kev txhim kho kev ua haujlwm ruaj khov ntawm cov kab hluav taws xob sib kis tau zoo.

Tshwj xeeb Scenario Optimization: Rau qhov tseem ceeb 110kV kab rov tav kab thiab 110kV kis tau tus mob kab nyob rau hauv roob roob nrog complex struts, nquag xob laim ntaus thiab tsis ruaj tsis khov daim phiaj kev ua hauj lwm, cov pa ib puag ncig zoo av yog ib qho yooj yim ua rau loj - teev fais fab tuag vim xob laim txhaum. Yog li ntawd, cov xwm txheej no sivarc suppression coil grounding homtxhawm rau txhawm rau xob laim overvoltage, txo qhov kev mus ncig ua si, thiab txhim kho kev tiv thaiv - cuam tshuam peev xwm ntawm kev ua haujlwm hauv roob.

 

2.4 1kV Tsawg Voltage Fais Fab Fais Fab: Ungrounded Hom & 380/220V Peb-theem tsib-Wire System

Rau cov hluav taws xob hluav taws xob qis qis qis dua 1kV, qhov nruab nrab feem ntau siv hom kev ua haujlwm tsis muaj av, uas tuaj yeem zam kev xoom- kev cuam tshuam tam sim no thiab txhim kho qhov ruaj khov ntawm cov khoom siv hluav taws xob tsawg.

Hauv pej xeem thiab kev lag luam universal380/220V peb-theem tsib-wire fais fab system, cov xaim nruab nrab (N xaim) thiab hauv av xaim (PE xaim) yog txheej txheem ntawm nws tus kheej. Cov xaim nruab nrab ua haujlwm xoom-voltage voj thiab ib zaug-theem fais fab mov ua haujlwm, thaum lub hauv av xaim tau mob siab rau cov khoom siv kev nyab xeeb hauv av, tiv thaiv hluav taws xob tsis sib haum thiab ua kom cov khoom siv hluav taws xob muaj kev nyab xeeb. Cov qauv no tau siv dav hauv ntiaj teb cov tsev pej xeem, cov tsev ua haujlwm, thiab me thiab nruab nrab -cov khoom siv hluav taws xob ua lag luam loj.

 

3. Cov ntsiab lus tseem ceeb txiav txim siab xaiv qhov nruab nrab hauv av hom

Nyob rau hauv qhov tseeb fais fab engineering tej yaam num, kev xaiv ntawm nruab nrab taw tes ua hauj lwm hom tsis tuaj yeem cia siab rau qhov voltage theem, thiab yuav tsum tau soj ntsuam tag nrho nrog rau cov hauv qab no cov ntsiab lus tseem ceeb los xyuas kom meej ntev -lub sij hawm ruaj khov thiab tsawg- nqi khiav hauj lwm ntawm daim phiaj fais fab:

• System Overvoltage kam rau ua: Sib phim hom av raws li qhov siab tshaj plaws uas tau tso cai hla dhau qhov hluav taws xob thiab lub zog zaus overvoltage ntawm daim phiaj kom tsis txhob muaj kev puas tsuaj thiab cov khoom puas.
• Tib -theem Grounding Capacitive Current: Thaum lub capacitive tam sim no loj heev, arc suppression coil grounding yuav tsum tau siv los tshem tawm arc faults; Cov xwm txheej tam sim no me me tuaj yeem siv hom tsis muaj av.
• Daim phiaj ua haujlwm ruaj khov: Cov kab xaim tseem ceeb thiab cov kab hluav taws xob sib txuas ua ke tseem ceeb ua ntej los tiv thaiv - muaj peev xwm ua txhaum thiab txais yuav cov hauv av resonant; Hauv nroog lub cev muaj zog hluav taws xob daim phiaj tseem ceeb ua ntej kev tiv thaiv kev ua txhaum sai thiab txais yuav khoom hauv av.
• Tus nqi Engineering & Tus nqi kho mob: Sib npaug cov khoom siv hluav taws xob rwb thaiv tsev, kev tiv thaiv kev teeb tsa tus nqi thiab tom qab ua haujlwm thiab kev saib xyuas tus nqi kom xaiv tus nqi tshaj plaws - kev daws teeb meem zoo.

 

4. Kev Lag Luam Daim Ntawv Thov Tus Nqi & Kev Ntsuas Cov Neeg Siv Khoom

Rau cov neeg ua haujlwm txawv teb chaws fais fab kev lag luam, cov khoom siv hluav taws xob thiab cov chaw lag luam kev lag luam, kev xaiv hom kev nruab nrab hauv av tuaj yeem nqa cov txiaj ntsig tseem ceeb:txo cov khoom siv tus nqi, txo daim phiaj tsis ua haujlwm, txuas ntxiv cov khoom siv hluav taws xob ua haujlwm, txo kev tuav tswj ntau zaus, thiab txhim kho cov khoom siv hluav taws xob zoo thiab qib kev nyab xeeb. Txawm hais tias nws yog kev tsim kho hluav taws xob tshiab, kev kho vaj tsev qub, lossis kev txhawb nqa cov khoom siv rau cov chaw nres tsheb fais fab, sib piv cov kev daws teeb meem hauv av kom raug yog tus yuam sij rau kev ua kom tau raws li qhov project thiab ntev - lub sijhawm ua haujlwm ruaj khov.

Meta Description: Kawm paub txog lub zog hluav taws xob nruab nrab ntawm qhov nruab nrab hauv av hom & xaiv cov qauv rau 6-10kV, 20-60kV, 110kV + thiab 380/220V systems. Master arc suppression coil & cov khoom siv hauv av rau cov phiaj xwm hluav taws xob thoob ntiaj teb.