Nyob rau hauv high voltage circuits, tshwj xeeb installation yog feem ntau siv, uas yog hu ua lub hwj chim capacitor. Lawv tuaj yeem siv los ua kom ruaj khov ntawm cov hluav taws xob hauv lub network, txhawm rau txhim kho lub zog ntawm kev teeb tsa, kev tsim tshwj xeeb tso cai rau koj kom muaj peev xwm loj. Kuj tseem siv tau rau cov nyiaj them rov qab muaj zog.
Power capacitor
Cov khoom siv siv hauv cov tes hauj lwm fais fab uas muaj hluav taws xob siab lossis qis, nrog rau hauv kev teeb tsa nrog ntau zaus. Lub hwj chim capacitors tuaj yeem siv ob leeg ntawm nws tus kheej thiab sib sau ua ke rau hauv cov roj teeb. Tsis zoo li cov capacitors siv hauv xov tooj cua hluav taws xob, lub zog muaj qhov hnyav thiab qhov ntev, nrog rau lub peev xwm loj thiab lub zog reactive. Kev zam yog cov cuab yeej siv los tswj cov khoom siv hluav taws xob hauv lub zog hluav taws xob, lub npe hu ua capacitors rau hluav taws xob hluav taws xob.
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Nyob ntawm daim ntawv thov, lub hwj chim capacitors tau muab faib ua hom hauv qab no:
- Cov cuab yeej rau kev teeb tsa hluav taws xob nrog qhov sib txawvtam sim no zaus siv dav hauv kev lag luam.
- Power capacitor nyob rau hauv high-frequency hluav taws xob tes hauj lwm.
- Kev sib txuas lus, lub zog tshem tawm thiab ntsuas qhov ntsuas hluav taws xob.
- Filter.
- Pulse.
Power zaus capacitor
Hom no suav nrog cov khoom siv txhawm rau txhawm rau txhim kho lub zog hauv AC kev teeb tsa nrog qee qhov, tsis tu ncua ntawm 50 Hz. Cov khoom siv zoo li no yog tsim rau siv sab hauv tsev thiab sab nraum zoov ntawm qhov kub tsis tshaj 50 ° C. Lawv muaj nyob rau hauv ob theem ib leeg thiab peb-theem versions. Nrog rau peb-theem tsim, lub zog cosine capacitor txuas nrog hauv daim duab peb sab. Qee zaum siv lub fuse los tiv thaiv kev tawg.
Tsis siv neeg cuam tshuam ntawm lub hwj chim ntawm cov khoom siv hluav taws xob hauv cov ntaub ntawv tam sim no dhau ntawm lub zog hluav taws xob vim qhov muaj zog ntxiv yog muab los ntawm cov hluav taws xob tshwj xeeb tam sim no. Kev tiv thaiv luv luv Circuit Court tam sim no ua tiav los ntawm kev txhim kho fuses. Nyob rau hauv cov kev tswj circuits, loj magnetic starters yog siv los tig rau thiab tawm, cov chav nyob yog nruab nrog lub peev xwm los kho thiab ntsuas qhov kev khiav hauj lwm raws li txoj cai.
capacitors rau kev teeb tsa siab
Hom no suav nrog lub zog hluav taws xob hluav taws xob kom nce kev siv lub zog muaj txiaj ntsig hauv kev teeb tsa hluav taws xob nrog ntau zaus ntawm 0.5 txog 10 kHz nrog qhov tshwj xeebcua txias. Ib pob ntawm cov khoom siv tau sib sau ua ke los ntawm kev sib cais ntawm cov seem txuas nrog rau ib leeg, los yog, yog tias tsim nyog, hauv series, ntawm ib sab, ib qho tshwj xeeb txias coil yog soldered rau daim hlau, uas yog ib qho nkhaus tooj liab raj los ntawm cov coolant. muab thaum lub sijhawm ua haujlwm ntawm lub cuab yeej. Lub tshuab cua txias yog siv los ua cov hlau lead tam sim no, lwm cov phaj phaj nyob rau sab nraud ntawm lub pob capacitor raug cais tawm ntawm lub tsev thiab txuas nrog cov hlau lead tam sim no. Cov ntu txuas nrog cov kauj ruam sib txuas nrog kev ywj pheej ua los ntawm cov plooj (porcelain insulators) mus rau lub hau npog.
Coupling, fais fab tshem tawm thiab qhov ntsuas hluav taws xob ntsuas qhov ntsuas hluav taws xob
Txhawm rau kom muaj kev ruaj ntseg ntawm kev sib txuas lus ntawm cov kab hluav taws xob, rau kev sib txuas lus thiab kev tiv thaiv nyob rau hauv ntau zaus ntawm 36 txog 750 kHz, cov khoom siv hauv cov ntaub ntawv pov thawj porcelain nrog insulated dielectric ua los ntawm cov roj ntxhia impregnated capacitor ntawv, voltage chav kawm 36 txog 500 kV yog siv. Lub hwj chim capacitors nrog lub zog ntawm 500 kV kuj tseem siv los ntsuas qhov hluav taws xob ntawm cov kab hluav taws xob thiab siv lub zog los muab hluav taws xob rau kev hloov thiab tswj cov ntsiab lus, uas tshwj xeeb nyob rau hauv high voltage fais fab kab.
Cov qauv tsim ntawm hom no yog lub log tsheb porcelain, npog uas yog cov khoom siv, cov ntsaws ruaj ruaj uas ua kom lub zog nruj ntawm lub capacitor, nrog rau cov roj expanders.
Lim thiab impulsecapacitor
Cov khoom siv lim tau tsim los ua haujlwm hauv cov lim dej ntau zaus ntawm cov chaw tshwj xeeb traction substations ob sab hauv tsev thiab sab nraum zoov. Lawv ua haujlwm nrog kev siv ib txhij ntawm DC thiab AC voltages nrog zaus ntawm 100 txog 1600 Hz, thaum tus nqi ntawm AC voltage yuav tsum tsis pub tshaj 1 kV, feem. Hom no kuj tseem siv tau rau kev ua haujlwm hauv DC-DC converters uas muaj cov mem tes thyristors.
Lim capacitors yog siv los ua kom lub zog tawm ntawm qhov sib txawv ntawm cov khoom siv hluav taws xob ntau hauv lub network, nrog rau hauv ob-voltage circuits nyob rau hauv ib puag ncig ntawm dielectric transformer roj thiab nyob rau hauv high-frequency lim circuits ntawm traction substations.
Hauv kev teeb tsa hluav taws xob siv rau cov chaw ua haujlwm siab-voltage impulse substations, nrog rau kev teeb tsa siv rau kev sib nqus stamping, kev tshawb nrhiav seismic thiab pob zeb crushing, impulse hwj chim capacitors yog siv. Lawv yog siv nyob rau hauv electrophysical installations rau cov creation thiab kawm ntawm high-temperature plasma, raws li zoo raws li rau superstrong pulsed tam sim no. Txhawm rau tsim cov teeb pom kev muaj zog ntawm cov xwm txheej hauv lub cev, nrog rau kev tshawb fawb nrog kev pab ntawm cov tshuab laser, nws yog lub zog pulse capacitors uas tau siv.
Qhov peculiarity ntawm kev ua haujlwm ntawm cov khoom siv no yog lub sijhawm them nqi qeeb, thiab, qhov sib txawv, qhov paug tshwm sim sai, impulsively. Ntxiv nrog rau cov capacitors,ntau surge voltage generators.
Lub network impulse voltage generator feem ntau yog siv rau kev siv hluav taws xob-hydraulic siv hluav taws xob tawm rau lub hom phiaj thev naus laus zis, vim muaj kev tsim tshwj xeeb lossis cov txheej txheem txheej txheem. Cov tshuab hluav taws xob zoo li no yog tsim los rau lub zog hluav taws xob 380, 400, 415, 440 V. Rated tso zis hluav taws xob yog 50 kV, tag nrho cov zis hluav taws xob yog 18 kW, qhov hluav taws xob reactive yog 0.73.
Pulse voltage generators yog ua los ntawm ob lub blocks ntawm kev them nyiaj thiab cov khoom siv hluav taws xob siab. Lub chaw them nyiaj suav nrog cov kauj ruam-down transformer thiab lub txee nrog lub converter uas muaj cov khoom siv capacitive-inductive. Lub siab-voltage compartment yog sawv cev los ntawm ib lub txee nrog lub hwj chim capacitors, ib tug tiv thaiv ntaus ntawv thiab ib tug surge arrester, raws li zoo raws li ib tug sib cais av.
