Dongosolo lamagetsi la chipatala ndi la boma, lomwe ndi gawo lachitetezo chamagetsi m'malo onse.Mapangidwe omanga chipatala nthawi zambiri amatengera mtundu wapakati, ndipo mphamvu yamagetsi imakhala yamtundu wa katundu.Mitundu yake ikuluikulu yamagetsi imaphatikizapo: njira yowunikira, makina opangira mpweya, mphamvu yachipatala, njira yowunikira mwadzidzidzi.
Kuwunikira ndi kuwongolera mpweya ndizomwe zimanyamula mphamvu zamagetsi mumitundu yosiyanasiyana yamagetsi achipatala, zomwe zidzatulutsa mayankho akulu a harmonic ku gridi yamagetsi yamagetsi panthawi yogwiritsidwa ntchito.Chifukwa chakugwiritsa ntchito mitundu yatsopano yamagetsi monga makina a X-ray, makina opangira maginito a MRI, makina a CT, ndi zina zotero, kugwiritsa ntchito magetsi osinthika, UPS osasokonezeka ndi katundu wina wambiri wosagwirizana, kumapanganso mayankho ogwirizana kuti agwirizane. gridi yamagetsi.
Chipatalacho chili ndi mphamvu zambiri zogwiritsira ntchito magetsi, ndipo zipangizo zamakina zimakhala zotetezeka komanso zodalirika monga chinthu choyamba.Chifukwa cha kugwiritsidwa ntchito kwakukulu kwa katundu wopanda mzere, ma harmonics amtundu wa 3, 5 ndi 7 amapangidwa makamaka mu network yamagetsi yachipatala.Ma Harmonics amakhudza mwachindunji ntchito yokhazikika ya zida zachipatala zolondola, ndipo kudzikundikira kwa 3 harmonics pamzere wosalowerera kumayambitsa kutentha pakati pa mzere wapakati, zomwe zimaika pangozi ntchito yotetezeka ya gululi yamagetsi yachipatala.
2. Tanthauzo ndi m'badwo wa ma harmonics
Tanthauzo la ma harmonics: mndandanda wa Fourier kuwonongeka kwa kuchuluka kwa sinusoidal periodic nonlinear sinusoidal, kuwonjezera pakupeza gawo lomwelo monga ma frequency a gridi yamagetsi, komanso mndandanda wa zigawo zazikulu kuposa kuchuluka kofunikira kwa ma frequency amphamvu amagetsi. grid, gawo ili la magetsi limatchedwa ma harmonics.
Mbadwo wa ma harmonics: Pamene panopa ikuyenda kupyolera mu katundu, pali mgwirizano wosagwirizana ndi mphamvu yamagetsi, yomwe imapanga sinusoidal panopa, zomwe zimabweretsa ma harmonics.
3. Kuvulaza kwa ma harmonics
1) Ma Harmonics amatsogolera ku kulephera kwamagetsi kosayenera ndi kuwonongeka kwa zida ngozi zomwe zimachitika chifukwa cha misoperation kapena kukana chitetezo ndi zida zodziwikiratu, zomwe zimapangitsa kuti pakhale kuwonongeka kwakukulu.
2) Kuwonjezeka kwa mafupipafupi a ma harmonic panopa kumayambitsa zotsatira zoonekeratu za khungu, zomwe zimawonjezera kukana kwa mawaya a zingwe zamagetsi ndi mizere yogawa, kumawonjezera kutaya kwa mzere, kumawonjezera kutentha, kukalamba msanga, kumachepetsa moyo, kumayambitsa kuwonongeka, ndipo sachedwa kugunda kwapafupipafupi, kupanga chiwopsezo chamoto.
3) Limbikitsani mphamvu ya grid resonance, kutsogola ku voltage ya harmonic ndi overcurrent, kuyambitsa ngozi zazikulu, kuwononga chiwongola dzanja cha capacitor ndi zida zina zamagetsi.
4) Ma Harmonics amakhudza magwiridwe antchito amagetsi osiyanasiyana.Zimabweretsa kutayika kowonjezera komanso kutenthedwa kwa ma asynchronous motors ndi ma transfoma, kutsatiridwa ndi kugwedezeka kwamakina, phokoso ndi kuchulukirachulukira, kuchepetsa magwiridwe antchito ndikugwiritsa ntchito, ndikufupikitsa moyo wautumiki.
5) Kusokoneza kulumikizana moyandikana, zida zamagetsi kapena zowongolera zokha, kapena kuzipangitsa kuti zisagwire ntchito bwino.
4. Sefa chiwembu
Chipatala cha Shaanxi Central ndi chipatala chamtundu wachiwiri A chomwe chili ndi zida zachipatala zapamwamba komanso malo abwino kwambiri azachipatala.Ogwira ntchito athu odziwa bwino ntchito komanso luso adapatsidwa ntchito ndi chipatala kumayambiriro koyambirira kuti ayese mphamvu yamagetsi yamagetsi otsika kwambiri a chipatala.Chiwerengero chonse chosokonekera cha zomwe zikuchitika mu gululi yamagetsi yamagetsi ndi 10%, zomwe zimagawidwa muzogwirizana za 3, 5 ndi 7.Malinga ndi zotsatira za mayeso, kampani yathu kukhazikitsidwa ya mphamvu ya 400A yogwira fyuluta chipangizo kwa chipatala, anaika mu thiransifoma otsika voteji kubwereketsa mbali, ntchito yapakati mankhwala ulamuliro harmonic.
5 Zosefera Yogwira (/ 690v-yogwira-mphamvu-sefa-chinthu/)
5.1 Chiyambi cha Zamalonda
Active Power fyuluta (/noker-3-phase-34-wire-active-power-filter-apf-ahf-for-dynamic-harmonics-compensation-product/) ndi mtundu watsopano wa chipangizo chamagetsi chamagetsi chomwe chimagwiritsidwa ntchito kupondereza ma harmonics ndi mphamvu. kubwezera mphamvu zotakataka, zomwe zimatha kubweza ma harmonics ndi kusintha kwamphamvu kwamphamvu mu kukula ndi pafupipafupi.
5.2 Mfundo Yogwirira Ntchito
Mtolo wamakono umadziwika mu nthawi yeniyeni ndi CT yakunja, ndipo mtengo wa harmonic umawerengedwa ndi DSP yamkati.Kupyolera mu chizindikiro cha PWM chimatumizidwa ku IGBT, inverter imapanga mphamvu ya harmonic yofanana ndi katundu wa harmonic ndi mbali ina mu gululi yamagetsi kuti athetse ma harmonic ndikukwaniritsa cholinga choyeretsa gululi.
6 .Kuwunika ndi kusanthula deta yolamulira ma harmonics m'zipatala
APF cabinet
Deta ya APF(/harmonics-compensation-200400v-active-harmonic-filter-ahf-module-triple-phase-product/)harmonic compensation kuchipatala imayang'aniridwa ndi wowunikira mphamvu zamagetsi CA8336 waku France, komanso data yamphamvu yamphamvu adayesedwa motsatana pansi pazigawo ziwiri za ntchito ya APF (pambuyo pa chipukuta misozi) ndi kutseka (popanda chipukuta misozi), ndipo deta idafupikitsidwa ndikuwunikidwa.
6.1 Kuyeza ndi kusanthula ma APFs(/3-phase-3-wire-active-power-filter-400v-75a-apf-panel-product/) kulowa ndi kuchotsa deta
1: Mtengo wogwira ntchito pano
2:THDi pamaso pa Active fyuluta yolumikizidwa
3:THDi pambuyo Zosefera Yogwira yolumikizidwa
4:THDi kuyambira 1 mpaka 5 isanachitike Zosefera Yogwira yolumikizidwa
5:THDi kuyambira 1 mpaka 5 pambuyo pa Active fyuluta yolumikizidwa
6:THDi kuyambira 1 mpaka 7 isanachitike Zosefera Yogwira yolumikizidwa
7:THDi kuyambira 1 mpaka 7 pambuyo pa Active fyuluta yolumikizidwa
Zotsatira:
| APF | THDi (chiwerengero) | THDi (5) | THDi (7th) |
| Musanagwirizane ndi APF | 10% | 9% | 3.3% |
| Pambuyo pa APF kugwirizana | 3% | 3% | 0.5% |
Monga momwe tawonetsera pa chithunzi pamwambapa, kuwongolera kwachipatala kwachipatala ndi AHF (/low-voltage-active-power-filter-reduce-the-harmonic-active-harmonic-filter-ahf-product/) kunayesedwa ndi akatswiri mphamvu quality analyzer CA8336 of France.Kuyerekeza kwa data isanachitike komanso pambuyo pa APF idayesedwa motsatana.Titagwiritsa ntchito APF yathu pakuwongolera kwa harmonic, kuchuluka kwaposachedwa kwaposachedwa (THDi) kwa network yamagetsi yakuchipatala kumachepetsedwa kuchokera ku 10% mpaka 3%, ndipo zotsatira zake ndizofunika kwambiri.
7. Mwachidule
Njira yoperekera magetsi m'chipatala ndi yofunika kwambiri.Kukhazikitsidwa kwa zida zatsopano zamagetsi kwathandiza kwambiri kuti chipatala chikhale bwino komanso kuti chipatala chikhale bwino, komanso kwapereka malo abwino ochizira odwala ambiri.Koma mphamvu yatsopanoyi imabweretsanso kuwonongeka kwa harmonic.Kukhalapo kwa ma harmonics kumawononga ntchito yanthawi zonse ya grid mphamvu ya chipatala ndipo kumakhudza kukhazikika kwa zida zochiritsira zolondola.Monga gawo la gulu lamagetsi amagetsi a anthu, ma harmonics amachulukitsa kugwiritsa ntchito magetsi m'zipatala, zomwe zikutsutsana ndi mawu adziko lonse olimbikitsa kusunga mphamvu.
Pambuyo pa fyuluta yathu yogwira ntchito, imapangitsa kuti magetsi aziyenda bwino m'chipatala, kuthetsa zoopsa za chitetezo, kumapangitsa kuti magetsi azikhala otetezeka komanso oyeretsa pazida zamankhwala, ndipo nthawi yomweyo amaganizira zopulumutsa mphamvu ndi kuchepetsa kugwiritsa ntchito.
Nthawi yotumiza: Oct-16-2023