Kev Taw Qhia Kev Xaiv Rau Dual -Txoj Haujlwm Load Switches: Kev Ntsuam Xyuas Ntawm 630A Daim Ntawv Thov Scenario Ntawm 25kV Voltage Level

Kev thov rau 630A tam sim no- nqa lub peev xwm hauv 25kV lub zog hluav taws xob muaj nyob rau hauv cov chaw tsim khoom lag luam, cov phiaj xwm hauv nroog thiab cov xwm txheej txuas ntxiv mus. Raws li ib qho tseem ceeb tswj ntaus ntawv, dual - txoj hauj lwm load switches yuav tsum xav txog high voltage kam rau ua, siab load peev xwm thiab txhim khu kev qha arc extinguishing muaj peev xwm. Daim ntawv no txheeb xyuas nws cov kev cai tseem ceeb, cov xwm txheej ntawm daim ntawv thov thiab cov kev xaiv tseem ceeb, thiab muab cov ntaub ntawv siv tau rau cov haujlwm engineering.
I. Cov kev cai tseem ceeb rau 25kV / 630A Load Switches
1.Arc-Tswj muaj peev xwm thiab rwb thaiv tsev tsim
Lub 25kV system muaj cov cai nruj rau kev tiv thaiv arc thiab ceev ceev thaum lub sijhawm thauj khoom ntawm 630A cuam tshuam. Cov thev naus laus zis tam sim no suav nrog:
Gas arc extinguishing: SF6 SF6 txhaj nrog compressed roj kom ua tiav arc tua sai los ntawm kev siv nws lub siab dielectric zog thiab arc extinguishing kev ua tau zoo. Piv txwv li, qee qhov SF6 load switches muaj peb txoj hauj lwm - txoj hauj lwm tsim (kaw hauv av qhib) uas sib txuas lub arc extinguishing chamber nrog rau hauv av hloov. Cov cuab yeej tuaj yeem tiv taus qhov luv luv - Circuit Court tam sim no txog li 25kA (2s) thiab qhov siab tshaj plaws tam sim no ntawm 63kA kom ua tau raws li qhov yuav tsum tau muaj ntawm 25kV system.
Nqus Arc-Kev tua: Lub tshuab nqus tsev ib puag ncig tuaj yeem tawg arc plasma sai sai thiab tsim nyog rau kev ua haujlwm nquag. Optimized contact structures extends hluav taws xob lub neej mus rau ntau tshaj 10,000 laps thiab txhua yam lub neej mus rau ntau tshaj 30,000 laps, ua rau nws zoo tagnrho rau siab - load ceev cheeb tsam.
Gas-Producing/Pressurized Arc-Extinguishing: arc zog decomposes solids to produce arc extinguishing gas. Txawm hais tias tus nqi- ua tau zoo, lub sijhawm txij nkawm luv luv thiab feem ntau yog siv rau hauv cov xwm txheej tsis zoo.
2.Environmental Adaptability
Sab nraum zoov 25kV tshuab yuav tsum muaj peev xwm tiv taus huab cua:
Qhov kub thiab txias: Cov cuab yeej ua haujlwm tsis tu ncua ntawm -40℃thiab +70℃. Huab cua-resistant silicone roj hmab seals thiab UV-resistant coatings txuas rau sab nraum zoov kev pab cuam lub neej mus rau ntau tshaj 25 xyoo.
Kev ntsuas kev tiv thaiv: Plhaub yuav tsum tau IP55 lossis siab dua los tiv thaiv cov ntsev pos huab thiab plua plav nkag. epoxy resin yog txhaj rau hauv Stainless hlau vaj tse kom ua tiav cov pa xau tsawg dua 0.1% / xyoo, kom ntseeg tau ntev -lub sij hawm sealing.
3. Kev txawj ntse thiab kev ua qauv
Niaj hnub nimno load switches feature ntse xyuas:
Wireless Temperature Sensing: LoRa technology monitors contact temperature in real time, trigger alarms and reduces load when temperatures are unusually high (>65K).
Modular expansion: Txhawb 30℃-60℃luj tshib thiab T-hom feeder txuas rau kev sib dhos ceev hauv cov kev daws teeb meem cabling. parallel busbar units, piv txwv li, tuaj yeem nthuav dav lub peev xwm ntawm 630A txog 1260A.
ii. Tej yam kev thov Scenarios
1.Industrial Power Distribution Systems
Hauv kev lag luam hnyav xws li hlau thiab tshuaj, 25kV / 630A load keyboards tswj cov hluav taws xob loj thiab hluav taws xob arc rauv:
Tsav Circuit Court Control: Lub tshuab steel siv lub tshuab nqus tsev hloov nrog lub fuse ua ke kom ntseeg tau tias cuam tshuam lub cev muaj zog pib tam sim no (uas nce siab ntawm 5 npaug ntawm qhov ntsuas tam sim no) thaum muab luv luv - tiv thaiv Circuit Court los ntawm fuse.
Capacitor Bank Hloov: Rau cov nyiaj them rov qab fais fab, SF6 load keyboards nquag cuam tshuam capacitor them tam sim no (25A) yam tsis muaj kev pheej hmoo kav.
2.Urban Power Grid Upgrades
Nrog rau kev nce hauv nroog load ceev, 25kV lub nplhaib tseem ceeb ua cov khoom siv tseem ceeb:
Cable ceg thawv: Compact peb-theem tsim txo cov cuab yeej loj los ntawm 40% rau txoj kev nqaim nqaim.
Distributed Generation Integration: Bidirectional tam sim no - nqa peev xwm (± 630A) txhawb kev hloov pauv ntawm lub zog tauj dua tshiab, thiab kev tsim kev sib cuag tau zoo tso cai rau kev hloov mus tas li.
3. Kev siv hluav taws xob tauj dua tshiab
Nyob rau hauv cua / hnub ci substations, 25kV load switches insulate transformers thiab sau kab:
Offshore cua: corrosion resistant stainless hlau load hloov mus rau marine ib puag ncig tom qab 500 teev ntawm ntsev pos huab kuaj.
Kev sib koom ua ke ntawm lub zog cia: ntse load hloov nrog DTU pab kom hloov chaw taws teeb (lub sijhawm teb<100ms), enhancing system flexibility.
III. Kev xaiv qhov tseem ceeb
Kev sib piv Parameter:
Qib Siab dua lossis sib npaug rau 630A, luv luv-lub sij hawm resistivity Ntau tshaj lossis sib npaug rau 25kA, ncov resistivity Ntau dua lossis sib npaug rau 63kA.
Kev tiv thaiv xob laim Ntau dua lossis sib npaug ntawm 125 kV thiab zaus ua haujlwm Ntau dua lossis sib npaug rau 42kV.
Arc -Kev xaiv txoj kev tua hluav taws:
Vacuum arc extinguishing yog tsim rau kev ua haujlwm nquag; SF6 los yog roj- cov khoom tsim muaj lub sijhawm tu ncua ntev rau kev siv sab nraum zoov.
Sab nraum zoov ib puag ncig yuav tsum ua qhov tseem ceeb tshaj plaws SF6 cov qauv tsim los txo qis kev pheej hmoo.
Kev txawj ntse yuav tsum muaj:
Rau kev saib xyuas tej thaj chaw deb, xaiv cov khoom siv nrog tsim- nyob rau hauv tam sim no transformers thiab kev sib txuas lus modules (xws li RS485/IEC 61850).
Cov xwm txheej tseem ceeb tau txais txiaj ntsig los ntawm kev saib xyuas qhov ntsuas kub thiab qhov ua txhaum cai (kev ceeb toom ntxov) ua haujlwm.
Environmental Adaptability:
At high altitudes (>3,000m), yuav tsum tau txo qis kev ua haujlwm lossis siv cov qauv tshwj xeeb toj siab.
Corrosive ib puag ncig yuav tsum tau 316L stainless hlau lossis epoxy-coated Cheebtsam.
Xaus:
Xaiv 25kV / 630A dual- txoj haujlwm thauj khoom hloov pauv yuav tsum muaj kev sib npaug ntawm kev ua haujlwm, kev thov kev thov thiab tus nqi- ua tau zoo. Nrog txoj kev loj hlob ntawm daim phiaj ntse thiab lub zog tauj dua tshiab, cov khoom lag luam uas muaj kev ntseeg siab, kev txawj ntse thiab kev hloov pauv ib puag ncig yuav ua tus thawj. Kev coj ua engineering yuav tsum ua qhov tseem ceeb rau kev hloov kho IEC 62271-103-tsim kev daws teeb meem kom ntseeg tau tias lub cev muaj kev ruaj ntseg mus ntev.