Nyob rau hauv Tuam Tshoj 3-35kV fais fab mov thiab kev faib khoom, feem ntau ntawm cov ntsiab lus nruab nrab tsis yog hauv av.Raws li lub teb chaws cov qauv kev lag luam, thaum ib-theem grounding tshwm sim, lub kaw lus tuaj yeem ua haujlwm txawv txav rau 2 teev, uas txo cov nqi khiav lag luam thiab txhim kho kev ntseeg siab ntawm cov khoom siv hluav taws xob thiab kev faib khoom.Txawm li cas los xij, vim qhov kev txhim kho txuas ntxiv ntawm lub zog hluav taws xob muaj peev xwm ntawm qhov system, hom ntawm cov khoom siv hluav taws xob tau maj mam hloov los ntawm cov kab xa mus rau cov kab hluav taws xob, thiab cov dej ntws tam sim no los ntawm qhov system mus rau txoj kev capacitor yuav loj heev.Thaum lub kaw lus yog ib-theem grounded, lub capacitor tiv thaiv tam sim no tsis yooj yim rau kev tshem tawm, thiab nws tau hloov mus rau hauv ib qho kev sib tshuam hauv av.Lub overvoltage ntawm kev tiv thaiv hauv av thiab ferromagnetic parallel resonance overvoltage tshwm sim los ntawm overvoltage yuav ua rau muaj kev phom sij rau kev nyab xeeb ntawm daim phiaj hluav taws xob.Lub overvoltage ntawm ob-theem kev tiv thaiv hauv av yog qhov hnyav dua, thiab theem overvoltage ntawm lub tshuab tsis ua haujlwm yog 3 mus rau 3.5 npaug ntawm tag nrho cov kev ua haujlwm ib txwm muaj.Yog hais tias xws li ib tug siab overvoltage tshwm sim nyob rau hauv lub hwj chim 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 rov ua dua thiab kev puas tsuaj ntawm cov txheej txheem rwb thaiv tsev ntawm cov khoom siv hluav taws xob, nws yuav ua rau lub zog tsis muaj zog ntawm cov txheej txheem rwb thaiv tsev, ua rau cov txheej txheem tsis zoo ntawm cov txheej txheej rwb thaiv tsev, thiab ua rau ob xim luv luv-circuit tsis ua hauj lwm.Tsis tas li ntawd, nws tseem yuav ua rau muaj kev nyab xeeb xws li tsis ua haujlwm ntawm cov txheej txheem rwb thaiv tsev ntawm cov khoom siv hluav taws xob (qhov tseem ceeb yog qhov tsis ua haujlwm ntawm lub rwb thaiv tsev txheej ntawm lub cev muaj zog), tawg ntawm cables, emission point PT ntawm voltage transformer saturation excitation regulator, tawg ntawm high-voltage arrester, thiab lwm yam. Yuav kom daws tau qhov overvoltage teeb meem tshwm sim los ntawm lub sij hawm ntev hluav taws xob tiv thaiv grounding system, lub arc suppression coil yog siv los them cov nqi tam sim no ntawm cov neutralization capacitor, thiab muaj peev xwm ntawm qhov teeb meem ntawm kev tiv thaiv hluav taws xob. tuav.Lub hom phiaj ntawm txoj kev no yog tshem tawm photoelectricity.Tam sim no, nws tsis paub meej tias lub arc suppression coil nws tus kheej muaj ntau yam ntxwv, thiab nws tsis tuaj yeem them nyiaj rau lub peev xwm tam sim no, tshwj xeeb tshaj yog kev puas tsuaj los ntawm cov khoom siv hluav taws xob siab tsis tuaj yeem them nyiaj raws li qhov xav tau.Raws li kev tshawb fawb tshawb fawb ntawm ntau yam arc suppression rings, peb lub tuam txhab tau tsim HYXHX ntse arc suppression khoom.
Lub Scope ntawm daim ntawv thov ntawm lub ntse arc suppression ntaus ntawv:
1. Cov khoom siv no yog tsim rau 3 ~ 35KV nruab nrab voltage fais fab system;
2. Cov khoom siv no yog tsim rau cov khoom siv hluav taws xob uas qhov nruab nrab ntawm qhov tsis yog hauv av, qhov nruab nrab ntawm qhov nruab nrab yog grounded los ntawm arc suppressing coil, los yog qhov nruab nrab taw tes yog grounded los ntawm kev ua haujlwm siab.
3. Cov khoom siv no tsim nyog rau cov phiaj xwm hluav taws xob nrog cov kab hluav taws xob ua lub cev tseem ceeb, cov kab hluav taws xob hybrid nrog cov kab hluav taws xob thiab cov khoom siv hluav taws xob ua lub cev tseem ceeb, thiab cov kab hluav taws xob nrog cov nyiaj siv hluav taws xob ua lub cev loj.
Cov yam ntxwv ntawm kev txawj ntse arc suppression ntaus ntawv:
Tus maub los siv plaub lub qauv CPU, ib qho rau tib neeg kev sib cuam tshuam thiab kev sib txuas lus hauv lub sijhawm, ib qho rau kev ua piv txwv thiab kev suav, ib qho rau kev tswj cov teeb liab los xyuas kom meej qhov tseeb ntawm cov teeb liab tso tawm, thiab ib qho rau kev ua txhaum.
Software nta:
1. Real-time multitasking operating system (RTOS):
Kev txhim kho software siv lub sijhawm ua haujlwm ntawm lub sijhawm tiag tiag thiab cov kws tshaj lij lub tsev qiv ntawv muaj peev xwm ua haujlwm, thiab tsom mus rau qhov programming style ntawm kev ua haujlwm txhua hnub, thiab ua cov peev txheej, kev teem sijhawm ua haujlwm, tshwj xeeb tuav thiab lwm yam haujlwm raws li kev pabcuam tseem ceeb.Nws ua haujlwm zoo heev thiab tuaj yeem siv tag nrho ntawm kev ua haujlwm ntawm cov teeb liab digital processors thiab microprocessors.Cov lus piav qhia hauv computer yog nrawm dua los siv, muaj kev nyeem tau zoo dua, thiab yooj yim nthuav thiab hloov pauv.
2. Txheem MODBUS kev sib txuas lus raws tu qauv:
Standard MODBUS kev sib txuas lus raws tu qauv tau txais yuav los pab txhawb kev nkag mus rau ntau yam kev sib koom ua ke automation systems.Ib qho kev sib txuas lus sib txuas lus ua microprocessor raug xaiv los txhim kho kev sib txuas lus ua kom muaj peev xwm thiab kev sib txuas lus ceev.
Tom qab lub cuab yeej qhib, nws tuaj yeem rov qab mus rau qhov chaw nyob deb.
3. Siv cov kev ua tau zoo DSP:
Qhov piv txwv thiab kev suav feem xaiv TMS320F2812DSP nti ntawm TI Company.High zaus mus txog 150MHz.
Raws li lub khoos phis tawj programming, cov teeb liab analog tau khaws cia hauv lub sijhawm tiag tiag tuaj yeem hloov pauv sai Fourier hauv lub sijhawm luv luv, thiab cov mem tes tam sim no tuaj yeem tau txais thiab ntsuas hauv lub sijhawm.
4.14-ntsis multi-channel simultaneous sampling digital-rau-analog converter:
Vim tias lub kaw lus yuav tsum muaj cov qauv raug, AD xaiv 14 khoom.Tag nrho muaj 8 channels.Txhua 4 channel kab siv kev tshaj tawm tib lub sijhawm los txhim kho qhov tseeb ntawm kev siv.Sab nraud CLK ntawm AD yog 16M, yog li ua kom cov 64-point sampling thiab xam cov kev cai ntawm txhua lub voj voog ntawm peb cov qauv.
5. Siv programmable logic li:
Kev ua haujlwm ntawm cov khoom siv ib txwm muaj nyob rau ntawm ib nti, uas txo cov substrate cheeb tsam thiab cov ntaub qhwv, ua kom lub caij tsheb luv luv, txhim kho kev cuam tshuam kev cuam tshuam thiab kev cia siab rau hauv Circuit Court, thiab txhim kho qhov yooj yim rau tib lub sijhawm.
Tag nrho cov software system siv ob ALTERA EPM7128 ua ib feem ntawm cov logic digital.Cov nti no tuaj yeem rov ua dua tshiab, uas muaj 2500 lub rooj vag thiab 128 macro hlwb, uas tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm cov logic nyuaj.Daim ntawv thov kev sib xyaw ua ke ic txo cov naj npawb ntawm cov khoom siv ywj pheej xav tau los ntawm cov kab ke digital, thiab txhim kho kev ntseeg siab thiab kev ruaj ntseg ntawm lub system.
6. Fault kaw muaj nuj nqi:
Lub kaw lus yuam kev tuaj yeem sau 8 qhov yuam kev waveforms nyob rau hauv lub voj voog, nrog rau sab laug thiab sab xis peb-theem voltage, xoom-sequence voltage, zero-sequence tam sim no, peb-theem AC contactor thiab Circuit Court breaker ua ntej thiab tom qab qhov txhaum tshwm sim.
7.Tus tib neeg-tshuab interface txais cov kua siv lead ua kua loj thiab cov ntawv qhia zaub mov Suav tag nrho los tso saib lub xeev tam sim no kom muaj nuj nqis nyob rau hauv graphical yam, real-time thiab intuitive peb-theem voltage tus nqi, xoom-phase voltage tus nqi, thiab xoom-theem tam sim no tus nqi.
Cov yam ntxwv tseem ceeb ntawm lub cuab yeej
1. Kev ua haujlwm ceev ntawm lub cuab yeej yog ceev, thiab nws tuaj yeem ua sai sai hauv 30 ~ 40ms, 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 ua haujlwm, thiab lub arc grounding overvoltage tuaj yeem raug txwv tsis pub dhau ntawm cov kab hluav taws xob ntau;
3. Tom qab lub tshuab ua haujlwm, tso cai rau lub capacitive tam sim no ntawm lub kaw lus kom dhau mus tsis tu ncua ntev li 2 teev, thiab tus neeg siv tuaj yeem cuam tshuam nrog cov kab tsis raug tom qab ua tiav qhov kev hloov pauv ntawm kev hloov lub load;
4. Kev tiv thaiv kev ua haujlwm ntawm lub cuab yeej tsis cuam tshuam los ntawm kev teev thiab kev ua haujlwm ntawm daim phiaj fais fab;
5. Cov cuab yeej muaj cov nqi ua haujlwm siab, thiab lub zog hloov hluav taws xob hauv nws tuaj yeem muab cov cim hluav taws xob rau kev ntsuas thiab kev tiv thaiv, hloov cov pa PTA loj heev;
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 qhov loj xoom-ib ntus tam sim no hloov pauv ntawm txoj kab txhaum ua ntej thiab tom qab lub arc raug tua.
7. Lub cuab yeej txais kev sib xyaw ua ke ntawm cov hluav taws xob tiv thaiv hluav taws xob thiab cov khoom siv tshwj xeeb tam sim no-txhim kho resonance eliminator, uas muaj peev xwm ua kom muaj zog tiv thaiv ferromagnetic resonance thiab tiv thaiv zoo;
8. Lub cuab yeej muaj kev ua haujlwm ntawm arc lub teeb grounding txhaum yoj kaw, muab cov ntaub ntawv rau cov neeg siv los soj ntsuam cov xwm txheej.
Cov khoom tseem ceeb ntawm cov cuab yeej thiab lawv cov yam ntxwv:
1. High-voltage nqus ceev contactor JZ nrog theem sib cais tswj;
Qhov no yog AC lub tshuab nqus tsev contactor tshwj xeeb uas tsim los ntawm peb lub tuam txhab uas tuaj yeem tswj tau los ntawm theem sib cais, thiab nws tuaj yeem muab tso rau hauv kev ua haujlwm sib cais hauv 8 ~ 12ms.Ib qho kawg ntawm lub tshuab nqus tsev contactor txuas nrog lub tsheb npav, thiab lwm qhov kawg yog ncaj qha hauv av.Thaum lub sijhawm ua haujlwm ib txwm muaj, JZ qhib thiab kaw raws li kev tswj hwm ntawm microcomputer maub los.Kev khiav hauj lwm lub zog hluav taws xob ntawm lub tshuab nqus tsev contactors ntawm txhua theem yog sib koom ua ke.Thaum twg ib theem kaw nws lub tsheb npav hauv av, ob theem yuav tsis ua haujlwm ntxiv lawm.
Lub luag haujlwm ntawm JZ yog los tiv thaiv cov cuab yeej siv los ntawm kev cuam tshuam ntawm overvoltage los ntawm kev hloov pauv sai ntawm qhov tsis ruaj tsis khov arc grounding rau ruaj khov hlau ncaj qha av thaum arcing grounding tshwm sim hauv qhov system.
2. HYT loj qhov chaw tawg-pov thawj txij nkawm-dawb overvoltage tiv thaiv;
HYT loj-muaj peev xwm tawg-pov thawj txij nkawm-dawb overvoltage protector ua los txwv cov overvoltage ntawm lub system.Nws txawv ntawm cov qauv zinc oxide ntes (MOA) thiab muaj cov hauv qab no zoo:
(1) Tus nqi ntws loj thiab dav siv ntau yam;
(2) Txoj kev sib txuas plaub-hnub qub tuaj yeem txo cov theem-rau-theem overvoltage thiab txhim kho kev ntseeg tau ntawm kev tiv thaiv zoo heev;
(3) Lub peev xwm muaj peev xwm zinc oxide uas tsis yog-linear resistor thiab qhov paug tawm tiv thaiv ib leeg.Qhov paug tawm ua rau tus nqi them ntawm ZnO tsis-linear tsis kam xoom, ZnO tsis-linear tsis kam tsis degrade, cov yam ntxwv tsis-linear ntawm ZnO tsis-linear tsis kam tsis ntws rov qab tom qab qhov sib txawv ntawm qhov paug tawm, Qhov sib txawv ntawm qhov tsis ua hauj lwm ntawm arc suppression, thiab cov khoom siv lub neej zoo dua
(4) Qhov ntsuas qhov ntsuas hluav taws xob yog 1, thiab cov nqi hluav taws xob thiab qhov hluav taws xob tawm yog tib yam nyob rau hauv ntau qhov hluav taws xob waveforms, thiab yuav tsis cuam tshuam los ntawm ntau yam kev khiav hauj lwm overvoltage waveforms.Qhov tseeb overvoltage tiv thaiv tus nqi thiab kev tiv thaiv zoo heev
(5) Tus nqi tam sim no ntawm tus nqi thiab tawm yog nyob ze rau qhov seem ntawm qhov hluav taws xob, thiab tsis muaj qhov tshwm sim, uas yog qhov zoo los tiv thaiv cov txheej txheem rwb thaiv tsev ntawm cov khoom siv winding.
(6) Cov qauv yooj yim thiab meej, qhov ntim me me, thiab kev teeb tsa yooj yim;
Qhov loj qhov chaw tawg-pov thawj txij nkawm-dawb overvoltage protector yog thawj ntawm nws hom txwv overvoltages ntawm txhua yam.Ua ntej AC contactor JZ tsis qhib, lub overvoltage yog txwv nyob rau hauv qhov kev nyab xeeb.
3. HYXQ thawj tam sim no limiting harmonic eliminator:
HYXQ yog cov khoom tsim tawm ntawm peb lub tuam txhab.Nws yog ntsia nyob rau hauv series ntawm lub ntsiab nruab nrab nruab nrab ntawm lub voltage transformer thiab hauv av los suppress lub ferromagnetic series resonance ntawm lub voltage transformer thiab txhim kho qhov kev nyab xeeb ntawm lub hwj chim daim phiaj ua hauj lwm.
Hauv kev ua haujlwm ib txwm muaj, qhov tsis kam yog li 40kΩ, thiab qhov kev tiv thaiv ntawm thawj winding ntawm PT yog qib megohm, yog li nws yuav tsis cuam tshuam rau ntau yam kev ua yeeb yam ntawm PT, thiab yuav tsis hloov ntau yam tsis zoo ntawm lub system.Thaum lub PT resonates, cov tub ntxhais hlau yog saturated, lub excitation tam sim no ntawm cov thawj winding nce, thiab lub MQYXQ kuj nce sai, uas yuav ua tau ib tug zoo damping nyhuv.
HYXQ muaj cov qauv yooj yim thiab meej, lub teeb yuag, yooj yim installation thiab txhim khu kev qha.Nws muaj peev xwm tswj tau ib tug nruam thiab ceev mem tes tam sim no clearing;qhov ntau dua qhov kev siv ntawm series resonance overvoltage, lub sijhawm luv luv ntawm lub pulse tam sim no clearing lub sij hawm;Cov khoom no tuaj yeem txwv qhov nce tam sim no ntawm qhov kev tawm dag zog ntawm thawj winding ntawm lub voltage transformer, thiab zam qhov tam sim no los ntawm thawj winding ntawm lub voltage transformer.Yog li ntawd, lub zog kinetic ntawm lub Circuit Court breaker tsis txaus los tua lub arc tom qab lub Circuit Court breaker yog fused, ua rau lub short-circuit tsis ua hauj lwm kev nyab xeeb kev huam yuaj ntawm lub tsheb npav duct.
4. Microcomputer maub los ZK:
ZK yog qhov tseem ceeb ntawm cov khoom siv no.Nws txiav txim siab qhov txhaum qhov chaw thiab hom txhaum (muaj peev xwm hloov pauv hloov pauv, hlau hauv av, thiab arc grounding) raws li ua, Ub, Uc, thiab U cov teeb liab muab los ntawm qhov hluav taws xob hloov hluav taws xob, thiab tswj cov hluav taws xob nqus hluav taws xob tiv tauj rau hauv preset yam. Device JZ.
Kev tiv thaiv menyuam ntsuag thiab kev xaiv kab tuaj yeem ua ke kom ua tiav lub hom phiaj ntawm kev sib koom ua ke nruab nrab ntawm kev xaiv kab thiab xaiv kab.
5. High voltage tam sim no limiting fuse FU:
FU yog ib qho kev tiv thaiv tshwj xeeb rau txhua yam khoom siv, uas tuaj yeem zam qhov teeb meem ntawm ob xim luv luv-circuit tsis ua haujlwm los ntawm kev xaim tsis raug lossis kev ua haujlwm tsis raug.Nws muaj cov yam ntxwv hauv qab no:
(1) Lub peev xwm tawg loj, mus txog 63KA;
(2) Kev nrawm nrawm, lub sijhawm tawg yog 1 ~ 2ms;
(3) Kev txwv tam sim no yooj yim siv, thiab qhov ua txhaum tam sim no tuaj yeem raug txwv tsawg dua 1/5 ntawm qhov loj luv luv-circuit impulse tam sim no;
6. Tshwj xeeb voltage transformer PT nrog auxiliary secondary winding:
Cov cuab yeej siv tshwj xeeb anti-saturation voltage transformer.Piv nrog rau cov hluav taws xob hluav taws xob zoo tib yam, nws tuaj yeem tsis tsuas yog muab cov cim hluav taws xob ruaj khov rau kev ntsuas thiab tswj, tab sis kuj tiv thaiv nws tus kheej los ntawm kev raug xwm txheej xws li hluav taws xob hloov hluav taws xob puas tsuaj thiab kub hnyiab los ntawm qhov system nonlinear resonance.
Post lub sij hawm: Apr-12-2023