Cov lus piav qhia luv luv ntawm kev txawj ntse harmonic tshem tawm thiab arc suppression ntaus ntawv:
Nyob rau hauv Tuam Tshoj lub 3 ~ 35KV fais fab mov thiab tis system, feem ntau ntawm lawv yog nruab nrab point ungrounded systems.Raws li peb lub tuam txhab cov qauv kev lag luam, thaum ib-theem grounding tshwm sim, lub kaw lus tso cai rau kev khiav hauj lwm txawv txav rau 2 teev, uas zoo heev txo cov nqi khiav hauj lwm thiab txhim kho kev ntseeg siab ntawm lub hwj chim mov thiab kev faib khoom.Txawm li cas los xij, vim tias maj mam nce ntawm lub zog muaj peev xwm ntawm lub kaw lus, cov khoom siv hluav taws xob tau maj mam hloov los ntawm cov kab hluav taws xob mus rau cov kab hluav taws xob, thiab lub peev xwm tam sim no ntawm lub kaw lus mus rau hauv av yuav loj heev.Thaum lub kaw lus tsim ib-theem grounding, lub arc generated los ntawm ntau dhau capacitor tam sim no tsis yooj yim rau kev tua, thiab nws yog qhov zoo li yuav dhau los ua ib qho kev sib tshuam arc grounding device.Lub sijhawm no, lub overvoltage ntawm arc grounding ntaus ntawv thiab ferromagnetic series resonance overvoltage tshwm sim los ntawm nws yuav ua rau muaj kev phom sij rau kev nyab xeeb ntawm daim phiaj hluav taws xob.Lub overvoltage ntawm ib-theem arc arc grounding ntaus ntawv yog qhov loj heev, thiab qhov tsis tshua muaj kev txhaum theem overvoltage nce mus txog 3 ~ 3.5 npaug ntawm lub zog ua haujlwm ib txwm muaj.Yog hais tias xws li ib tug siab overvoltage ua nyob rau hauv daim phiaj rau ob peb teev, nws yuav twv yuav raug hu ua puas lub rwb thaiv tsev ntawm cov khoom siv hluav taws xob.Tom qab rwb thaiv tsev ntawm cov khoom siv hluav taws xob tau sau thiab puas tsuaj rau ntau zaus, cov rwb thaiv tsev tsis muaj zog yuav raug tsim, ua rau cov rwb thaiv tsev tawg thiab hauv av, uas ua rau ob xim luv luv Circuit Court tsis ua hauj lwm.Tsis tas li ntawd, nws tseem yuav ua rau muaj kev nyab xeeb xws li cov khoom siv hluav taws xob rwb thaiv tsev tawg (tshwj xeeb tshaj yog lub cev muaj zog tawg), cable tawg, voltage transformer saturation state excitation regulator burning PT, thiab zinc oxide arrester explosion.Yuav kom daws tau qhov teeb meem overvoltage tshwm sim los ntawm lub sij hawm ntev hluav taws xob arc grounding ntaus ntawv, lub arc suppression coil yog siv los them rau qhov tam sim no ntawm qhov nruab nrab point capacitor, thiab qhov tshwm sim ntawm qhov teeb meem ntawm qhov hluav taws xob arc yog suppressed.Lub hom phiaj ntawm txoj kev no yog tshem tawm hluav taws xob lub teeb.Txawm li cas los xij, vim muaj ntau tus yam ntxwv ntawm arc suppression coil nws tus kheej, nws tsis yooj yim sua kom them nyiaj tam sim no capacitive, tshwj xeeb tshaj yog kev puas tsuaj los ntawm cov khoom siv ntau zaus rau cov khoom siv hluav taws xob tsis tuaj yeem tshem tawm.Raws li kev kawm ntau yam arc suppression rings, peb lub tuam txhab tau tsim HYXHX ntse arc suppression ntaus ntawv.
Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm cov khoom siv ntse arc tiv thaiv:
1. Thaum lub kaw lus nyob rau hauv ib txwm ua haujlwm, lub khoos phis tawj tswj hwm ZK ntawm lub cuab yeej txuas ntxiv saib xyuas cov teeb liab hluav taws xob tsim los ntawm qhov hluav taws xob transformer PT;
2. Thaum qhov kev ua haujlwm voltage ntawm lub koom haum thib ob ua daim duab peb sab ntawm lub tshuab hluav taws xob hloov pauv los ntawm qhov tsis muaj peev xwm sib txawv mus rau qhov muaj peev xwm siab, nws txhais tau hais tias qhov system software yog faulty.Lub sijhawm no, lub microcomputer tswj board ZK pib tam sim ntawd, thiab tib lub sijhawm txiav txim siab qhov txhaum thiab theem sib txawv raws li kev hloov pauv ntawm PT thib ob tso tawm cov cim ua, Ub thiab Uc:
a.Yog tias ib-theem PT puas lawm, lub microcomputer maub los ZK yuav tso saib qhov sib txawv ntawm cov kab tawg thiab cov teeb liab ntawm cov kab tawg, thiab tso tawm cov teeb liab passive hloov mus rau tib lub sijhawm;
b.Yog hais tias nws yog ib tug hlau grounding txhaum, lub microcomputer tswj vaj huam sib luag ZK qhia lub grounding txhaum qhov chaw thiab grounding attribute teeb liab, thiab outputs ib tug passive mus kov teeb liab nyob rau tib lub sij hawm.Raws li cov kev xav tau tshwj xeeb ntawm tus neeg siv, nws tseem tuaj yeem muab qhov kev txiav txim kaw rau lub tshuab nqus tsev contactor JZ hauv lub txee, uas tuaj yeem txo qhov kev sib cuag voltage thiab qib voltage, thiab ua kom muaj kev nyab xeeb ntawm tus kheej;
c.Yog hais tias nws yog arc txhaum, lub microcomputer tswj vaj huam sib luag ZK yuav tso saib lub hauv av txhaum theem thiab av yam ntxwv teeb liab, thiab nyob rau tib lub sij hawm xa ib tug kaw lus txib mus rau qhov txhaum theem lub tshuab nqus tsev contactor JZ, thiab AC contactor yuav tam sim ntawd kaw lub arc. grounding yog hloov mus rau hlau grounding.Vim yog lub siab ntawm hluav taws xob arc ntawm ob sab, lub hauv av hluav taws xob arc poob rau xoom tam sim ntawd, thiab hluav taws xob arc yog tag nrho.Yog tias nws siv rau hauv kab sib chaws uas muaj cov kab sib kis, lub tshuab nqus tsev contactor JZ ntawm cov cuab yeej yuav cia li kaw tom qab 5 vib nas this ntawm kev ua haujlwm.Yog hais tias nws yog ib qho instantaneous ceev tsis ua hauj lwm, lub system yuav rov qab.Yog tias nws yog qhov txhaum tas mus li, nws yuav ua haujlwm txuas ntxiv thiab ua lub luag haujlwm hauv kev txwv tsis pub dhau lub zog dhau.Thiab tso zis passive hloov kev sib cuag teeb liab;
d.Yog hais tias lub cuab yeej muaj kev xaiv tsis siv neeg, thaum lub koom haum thib ob qhib daim duab peb sab voltage u ntawm transformer PT hloov los ntawm qhov tsis tshua muaj peev xwm mus rau siab muaj peev xwm, qhov me me tam sim no grounding xaiv module tam sim ntawd sau cov xoom-theem tam sim no ntawm txhua kab, thiab thaum muaj tsis muaj ib-theem grounding Nyob rau hauv cov ntaub ntawv ntawm ib tug hlau hauv av txhaum uas tsis tuaj yeem rov zoo li qub, xaiv cov kab txhaum raws li qhov amplitude ntawm xoom-theem tam sim no ntawm kab.Txoj kab txhaum raug xaiv raws li lub hauv paus ntsiab lus ntawm kev hloov pauv loj ua ntej thiab tom qab qhov av arc raug tua.
Cov yam ntxwv tseem ceeb ntawm cov cuab yeej ntse arc suppression:
1. Cov cuab yeej khiav ceev thiab tuaj yeem khiav tsis pub dhau 30 mus rau 40 milliseconds, uas ua rau lub sijhawm luv luv ntawm ib-theem grounding arc;
2. Lub arc tuaj yeem tua tau tam sim ntawd tom qab lub cuab yeej khiav, ua tau zoo txwv cov arc grounding overvoltage nyob rau hauv qhov hluav taws xob hauv online.
3. Tom qab kev ua haujlwm ntawm lub cuab yeej, tso cai rau lub peev xwm tam sim no ntawm lub kaw lus kom dhau mus tas li tsawg kawg ob teev, thiab tus neeg siv tuaj yeem cuam tshuam nrog cov kab tsis raug tom qab ua tiav kev ua haujlwm ntawm kev thauj khoom.
4. Kev tiv thaiv kev ua haujlwm ntawm cov khoom siv tsis cuam tshuam los ntawm qhov ntsuas thiab kev ua haujlwm ntawm daim phiaj hluav taws xob;
5. Cov cuab yeej siv tau zoo.Voltage transformers tuaj yeem muab cov cim hluav taws xob rau kev ntsuas thiab kev tiv thaiv, hloov cov khoom siv hluav taws xob ib txwm muaj.
6. Cov cuab yeej tau nruab nrog cov khoom siv me me tam sim no hauv av xaiv cov cuab yeej, uas tuaj yeem txhim kho qhov tseeb ntawm txoj kab xaiv los ntawm kev siv cov yam ntxwv ntawm kev hloov pauv loj ntawm xoom-ib ntu tam sim no ntawm txoj kab txhaum ua ntej thiab tom qab arc extinguishing.
7. Lub cuab yeej txais kev sib xyaw ua ke ntawm cov hluav taws xob hluav taws xob tiv thaiv hluav taws xob thiab cov khoom siv tshwj xeeb tam sim no-txhim kho kev sib haum xeeb tshem tawm, uas ua rau muaj kev cuam tshuam ferromagnetic resonance thiab tiv thaiv PT.
8. Cov khoom siv no muaj kev ua haujlwm ntawm kev sau cov kev ua txhaum ntawm cov khoom siv hluav taws xob arc grounding, thiab muab cov ntaub ntawv rau cov neeg siv khoom los soj ntsuam kev nyab xeeb kev raug mob.
Lub luag haujlwm tseem ceeb ntawm kev txawj ntse arc suppression thiab harmonic tshem tawm cov cuab yeej:
1. Thaum lub cuab yeej ua haujlwm zoo, nws muaj lub luag haujlwm ntawm PT txee
2. Nyob rau tib lub sijhawm, nws muaj kev ua haujlwm ntawm lub kaw lus kaw lub tswb thiab xauv;
3. System hlau av txhaum lub tswb, hloov qhov system hauv av txhaum taw tes ua haujlwm;
4. Clear lub arc grounding ntaus ntawv, lub system software series resonance muaj nuj nqi;hauv qab voltage thiab overvoltage tswb muaj nuj nqi;
5. Nws muaj cov ntaub ntawv kaw lus xws li lub tswb tsis raug tshem tawm lub sij hawm, qhov txhaum cai, qhov txhaum theem, qhov system voltage, qhib Circuit Court delta voltage, capacitor hauv av tam sim no, thiab lwm yam, uas yog yooj yim rau kev ua txhaum cai thiab tsom xam;
6. Thaum lub kaw lus software muaj ib qho kev txhaum hauv av ib zaug, lub cuab yeej tuaj yeem txuas qhov txhaum tam sim ntawd rau hauv av li ntawm 30ms los ntawm qhov tshwj xeeb theem-splitting lub tshuab nqus tsev contactor.Lub grounding overvoltage yog ruaj khov ntawm theem voltage, uas tuaj yeem tiv thaiv ob xim luv luv Circuit Court txhaum los ntawm ib-theem grounding thiab zinc oxide ntes tawg tshwm sim los ntawm arc grounding overvoltage.
7. Yog hais tias cov hlau yog grounded, qhov kev sib cuag voltage thiab cov kauj ruam voltage tuaj yeem txo qis heev, uas yog qhov tsim nyog rau kev ua kom muaj kev nyab xeeb ntawm tus kheej (hlau grounding tuaj yeem teeb tsa seb lub cuab yeej ua haujlwm raws li cov neeg siv khoom xav tau);
8. Yog tias siv rau hauv daim phiaj hluav taws xob feem ntau tsim los ntawm cov kab nyiaj siv ua haujlwm, lub tshuab nqus tsev contactor yuav kaw tom qab 5 vib nas this ntawm kev ua haujlwm ntawm cov cuab yeej.Yog tias nws yog ib ntus tsis ua haujlwm, lub kaw lus yuav rov qab mus rau qhov qub.Nyob rau hauv qhov kev tshwm sim ntawm ib tug mus tas li tsis ua hauj lwm, lub cuab yeej yuav ua hauj lwm dua mus tas li txwv lub overvoltage.
9. Thaum PT disconnection txhaum tshwm sim nyob rau hauv lub kaw lus, lub cuab yeej yuav tso saib cov theem sib txawv ntawm qhov kev sib txuas tsis raug thiab tso tawm cov teeb liab hu rau tib lub sijhawm, kom tus neeg siv tuaj yeem ntseeg tau xauv lub cuab yeej tiv thaiv uas yuav ua tsis tiav vim PT disconnection. .
10. Lub cuab yeej tshwj xeeb "ntse ntse ntse (PTK)" thev naus laus zis tuaj yeem ua tiav qhov tshwm sim ntawm ferromagnetic resonance, thiab tiv thaiv platinum zoo los ntawm kev sib tsoo, tawg thiab lwm yam xwm txheej tshwm sim los ntawm qhov system resonance.
11. Cov cuab yeej tau nruab nrog RS485 qhov (socket), thiab siv cov txheej txheem MODBUS kev sib txuas lus raws tu qauv kom paub meej hom kev sib raug zoo ntawm lub cuab yeej thiab tag nrho cov kev soj ntsuam video, thiab tswj cov haujlwm ntawm cov ntaub ntawv xa mus thiab cov chaw taws teeb tswj.
Ntxiv kev ua haujlwm ntawm ntse arc suppression thiab harmonic tshem tawm ntaus ntawv:
1. Qhov kev xaiv tsis siv neeg tuaj yeem teeb tsa raws li tus neeg siv yuav tsum tau ua
2. HYLX me me tam sim no grounding kab xaiv khoom tsim los ntawm peb lub tuam txhab tsuas yog xaiv cov kab raws li qhov amplitude ntawm xoom-sequence tam sim no thaum lub kaw lus yog grounded.Nws kov yeej qhov tsis zoo ntawm qhov raug qis ntawm txoj kab xaiv thaum xaiv kab nrawm nrawm thiab lub arc yog grounded nyob rau hauv cov khoom siv ib txwm xaiv
3. Kev ua haujlwm ntawm kev tshem tawm (tshem tawm) resonance (vibration) tuaj yeem teeb tsa raws li cov neeg siv khoom xav tau;
4. Qhov tshwj xeeb anti-saturation voltage transformer tsim los ntawm peb lub tuam txhab tuaj yeem teeb tsa kom haum rau qhov tseem ceeb tam sim no-txhim kho kev sib haum xeeb tshem tawm, uas tsim kev puas tsuaj rau ferromagnetic resonance mob thiab zam "hluav taws kub platinum" thiab "platinum kev nyab xeeb tawg" tshwm sim los ntawm resonance overvoltage ACCIDENT .
5. Microcomputer harmonic tshem tawm cov cuab yeej kuj tuaj yeem teeb tsa raws li tus neeg siv yuav tsum tau tshem tawm ferromagnetic resonance.
Post lub sij hawm: Apr-13-2023