Chosinthira chachikulu cha makina ogawa mphamvu za mphero ndi chosinthira chosinthira chokhala ndi voteji ya 0.4/0.66/0.75 kV, ndipo katundu wamkulu ndi mota yayikulu ya DC.Chifukwa kufala kwa mphamvu ndi kugawa kwa wosuta extruder rectifier chipangizo kawirikawiri amagwiritsa ntchito mitundu iwiri ya ukadaulo wa sikisi kugunda rectifier, amene amapanga kuchuluka kwa kugunda panopa (6N+1) mu madigiri osiyana mbali otsika-voteji, ndipo makamaka (6N +1) kumbali yamphamvu yamagetsi.12N+1) Onetsani mawonekedwe khumi ndi awiri a single-pulse rectifier.
Kuwonongeka kwa ma harmonics opangira magetsi ku gridi yamagetsi kumadalira kuwonongeka kwa mphamvu yamagetsi yogwirira ntchito pamakina ndi zida mu gridi yamagetsi, ndiye kuti, mphamvu yamagetsi yogwirira ntchito imaposa mlingo womwe makina ndi zida zimatha kupirira.Gulu lamagetsi limayang'anira mphamvu yamagetsi yomwe ikugwira ntchito pamagetsi amagetsi, ndipo wogwiritsa ntchito magetsi ali ndi udindo woyambitsa pulogalamu ya pulogalamuyo.
Malinga ndi luso laukadaulo lamakampani athu ogubuduza mphero kuti athane ndi ma harmonics, pantchitoyo, munjira yogawa mphamvu yamagetsi yamagetsi, 5th harmonic zomwe zilipo pano zikufika 20% ~ 25%, 7th harmonic pano ifika 8%, ndipo mphamvu ya harmonic imalowetsedwa mumagetsi apamwamba Zomwe zili mu mphamvu yamagetsi zimakula mofulumira, zomwe zimayambitsa kusokonezeka kwa ma waveform a magetsi operekera, kumawonjezera kutayika kwa mawaya ndi zida zamagetsi, kumabweretsa kugwiritsira ntchito mphamvu zowonjezera, kumakhudza ntchito yachibadwa ya ena. zida zamagetsi mu gridi yamagetsi, ndikuchepetsa mphamvu yamagetsi yamagetsi., zomwe zimakhudza chitetezo champhamvu cha gridi yamagetsi ndikubweretsa zoopsa zachitetezo kuntchito yotetezeka ya zida.
Kuti zitsimikizire kuti zidazo zimagwira ntchito bwino, mphamvu zodalirika komanso kupulumutsa mphamvu kwamagetsi, ndikofunikira kutenga njira zaukadaulo zopondereza zida zamagetsi zamagetsi ndikuganiziranso kubweza kwa mphamvu yoyambira.Malinga ndi miyezo yapamwamba yamagetsi ogwiritsira ntchito magetsi mu gridi yamagetsi ya dziko langa ndi zotsatira za kafukufuku wa sayansi za kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe ka kayendetsedwe kake. khazikitsani mafunde amtundu wa pulse omwe amachititsidwa ndi chowongolera kuti chigaye ndi kuyamwa mafunde a harmonic.Kuphatikiza apo, ili ndi ntchito zolipirira mafunde oyambira komanso kupulumutsa mphamvu zamagetsi.
The zida odana ndi harmonic opangidwa ndi Zhejiang Hongyan Electric Co., Ltd. ali ndi makhalidwe a kusintha kwamphamvu ndi katundu.Ngakhale kuwongolera bwino mphamvu yamagetsi, mphamvu yamagetsi ndi kupulumutsa mphamvu kwa gululi yamagetsi, imathanso kuwongolera kudalirika kwa magwiridwe antchito onse amagetsi ndi magwiridwe antchito a zida, komanso kuchepetsa ndalama zogwirira ntchito ndi Kuchepetsa mtengo wokonza zida, kutalikitsa zida. moyo, ndikubweretsa phindu lachuma kwa ogwiritsa ntchito.
Makina opukutira a DC nthawi zambiri amagwiritsa ntchito ma motors a DC, ndipo mphamvu pakugubuduza imakhala yotsika kwambiri, nthawi zambiri pafupifupi 0.7.Chimodzi mwazinthu zake zazikulu ndikuzungulira kwakanthawi kochepa, kuthamanga kwachangu, kuchuluka kwamphamvu, komanso kusinthasintha kwakukulu kosavomerezeka.Zofinyira mphamvu zimathanso kuyambitsa kusinthasintha kwamphamvu kwamagetsi a grid, kupangitsa kuti magetsi ndi zowonera pa TV zizizima, zomwe zimapangitsa kutopa ndi kukwiya.Kuphatikiza apo, zidzakhudzanso kugwira ntchito bwino kwa zigawo za thyristor, zida kapena zida zopangira, komanso kuyambitsa ngozi zachitetezo.General capacitor bank compensation sangathe kutsata kusintha kwa katundu munthawi yeniyeni kuti alandire chipukuta misozi.Malo olumikizirana ndi zida zamakina amakhudzidwa chifukwa chakusintha pafupipafupi, komwe kumakhudza kwambiri gridi yamagetsi.
Chigayo chopukutira cha DC chimatengera kufalitsa kwamagetsi kwaukadaulo wa thyristor rectification.Malinga ndi kuchuluka kwa pulse rectification, imatha kugawidwa mu 6-pulse rectification, 12-pulse mpaka 24-pulse.Kuphatikiza pa mphamvu yochepa, ma harmonics apamwamba adzapangidwa panthawi ya ntchito.Nthawi zambiri, mphero zapakhomo za DC Zowongolera 6-pulse rectification zimagwiritsidwa ntchito, kotero ma harmonics apamwamba kwambiri opangidwa ndi mbali imodzi yamagetsi otsika kwambiri a thiransifomayo amakhala makamaka 11 ndi 13 mbali yotsika ya thiransifoma yokhala ndi 2. ma windings do and yn olowa njira, 5th ndi 7 High-order harmonics akhoza kuchotsedwa kumbali ya high-voltage, kotero 11th ndi 13th high-order harmonic zigawo zikuluzikulu zimasonyezedwa mbali ya high-voltage.Zomwe zimakhudzidwa kwambiri ndi mafunde amphamvu kwambiri pagulu lamagetsi ndi kutenthetsa ndi kugwedezeka kwa zida zamagetsi, kutayika kwakukulu, kufupikitsa moyo wautumiki, kulumikizana, kulakwitsa kwa ntchito ya thyristor, kulakwitsa kwa magwiridwe antchito a zida zina zotetezera, kukalamba ndi kuwonongeka kwa wosanjikiza wamagetsi. , ndi zina.
Mayankho omwe mungasankhe:
Solution 1 Centralized management (yomwe imagwira ntchito kwa omwe ali ndi mphamvu zochepa, kumanzere ndi kumanja)
1. Kutengera harmonic control nthambi (3, 5, 7 Zosefera) + yotakasika mphamvu malamulo nthambi.Chida cholipirira chosefera chikayamba kugwira ntchito, chiwongolero cha harmonic ndi kubwezeranso mphamvu kwamagetsi amakwaniritsa zofunikira.
2. Gwiritsani ntchito dera lolambalalitsa lomwe limapondereza chipukuta misozi chosagwira ntchito, ndipo mutatha kulumikiza chipangizo cholipirira chosefera, pangani mphamvuyo kuti ikwaniritse zofunikira.
Njira 2 Kuchiza kwanuko (kumagwira ntchito ku 12-pulse rectifier rectifier low-voltage side treatment ndi injini yamphamvu kwambiri ndi makina okhotakhota oikidwa padera)
1. Adopt anti-harmonic bypass (5th, 7th, 11th order fyuluta), kutsata zodziwikiratu pomwe mphero ikuyendetsa, thetsani ma harmonics pamalopo, osakhudza magwiridwe antchito a zida zina panthawi yopanga, ndipo ma harmonics samafikira muyezo. atayikidwa mu ntchito.
2. Pogwiritsa ntchito fyuluta yogwira ntchito (kusefa ma harmonics amphamvu) ndi fyuluta yodutsa (5th, 7th, 11th order kusefa), ma harmonics pambuyo poyatsa sali ofanana.
Nthawi yotumiza: Apr-13-2023