Iyo H0 yekubatanidza mune matatu-phase yekugovera transformer chinhu chakakosha chegadziro yeshanduko, kunyanya mumamiriro ekudzika uye kugadzikana kwehurongwa. Kubatana uku kunoreva nzvimbo isina kwayakarerekera kana yekugadzika yeyakakwira-voltage (HV) inomonereka mutransformer, inowanzonzi H0. Kubata kwakakodzera uye kubatana kweH0 kwakakosha pakuita kuti ive yakachengeteka uye inobudirira kushanda kwemagetsi ekugovera masisitimu.
Chii chinonzi H0 muTatu-Phase Transformer?
H0 inomiririra nzvimbo isina kwayakarerekera yepamusoro-voltage inotenderera mune matatu-phase transformer. Ndiyo poindi apo zvikamu zvemhepo zvinopindirana mune wye (nyeredzi) gadziriso, zvichigadzira yakajairika nzvimbo isina kwayakarerekera. Iyi poindi isina kwayakarerekera inogona kushandiswa pakuisa pasi, ichipa yakagadzika referensi poindi yeiyo sisitimu uye kuwedzera kuchengetedzeka kwemagetsi.
Kukosha kweH0 Grounding
Kugadzika iyo H0 poindi inoshanda akati wandei akakosha zvinangwa:
1.System Kugadzikana uye Kuchengeteka: Nekuisa pasi H0, iyo sisitimu ine yakatarwa referensi poindi, iyo inobatsira kuchengetedza kugadzikana kwemagetsi pazvikamu zvese. Kubatana uku kunoderedza njodzi ye overvoltage mamiriro, izvo zvinogona kuitika nekuda kwekusagadzikana mitoro kana zvikanganiso zvekunze.
2.Mhosva Dziviriro: Kugadzika iyo H0 poindi inobvumira kukanganisa mafambiro kuyerera kusvika pasi, zvichiita kuti zvidziviriro zvekudzivirira senge mabreaker edunhu uye relays kuona uye kubvisa kukanganisa nekukurumidza. Izvi zvinobatsira kuderedza kukuvadzwa kune transformer uye yakabatana michina, kuve nechokwadi chekuenderera mberi kwakachengeteka kushanda.
3.Harmonic Mitigation: Yakakodzera H0 grounding inobatsira mukudzikisa kukanganisa kweharmonics mukati mehurongwa, kunyanya zero-sequence harmonics inogona kutenderera mune kwayakarerekera. Izvi zvinonyanya kukosha mumasisitimu ari kushandiswa nemagetsi emagetsi, sezvo harmonics inogona kukonzera kukanganisa uye kuderedza hupenyu hwemidziyo.
4.Kuderedzwa kweNguva Yakapfuura Kuwedzeredza: Kugadzika iyo H0 poindi kunogonawo kubatsira kudzikamisa overvoltages enguva pfupi anokonzerwa nekuchinja mashandiro kana kurova kwemheni, nekudaro kudzivirira transformer uye mutoro wakabatana.
Mhando dzeH0 Grounding
Kune akati wandei nzira dzakajairika dzekumisa iyo H0 poindi, imwe neimwe iine chaiyo mashandisiro ayo:
1.Solid Grounding: Iyi nzira inosanganisira kubatanidza H0 zvakananga pasi pasina kupindira kunopindira. Iri nyore uye inoshanda kune yakaderera-voltage uye yepakati-voltage masisitimu uko kunokanganisa mafungu anogadziriswa.
2.Resistor Grounding: Nenzira iyi, H0 yakabatana pasi kuburikidza nemudziviriri. Izvi zvinogadzirisa kukanganisa ikozvino kusvika kune yakachengeteka, kuderedza kushungurudzika pane transformer nemimwe midziyo panguva yekukanganisa kwepasi. Inowanzoshandiswa mune yepakati-voltage masisitimu.
3.Reactor Grounding: Pano, reactor (inductor) inoshandiswa pakati peH0 uye pasi. Iyi nzira inopa yakakwira impedance kudzikamisa kukanganisa mafungu uye inowanzo shandiswa mune yakakwira-voltage masisitimu uko kutadza kwazvino ukuru kunoda kudzorwa.
4.Kusavhurika kana Kuyangarara: Mune zvimwe zviitiko zvakakosha, iyo H0 poindi haina kudzika zvachose. Iyi gadziriso haina kunyanya kuwanda uye inowanzo shanda kune chaiwo maindasitiri maapplication uko kuzviparadzanisa kubva pasi kunodiwa.
Maitiro Akanakisisa eH0 Grounding
Kuti ive nechokwadi chekushanda kwakakwana kweatatu-chikamu chekugovera shanduri, akati wandei maitiro akanakisa anofanirwa kuteverwa maererano neH0 pasi:
1.Kugadzira Kwakakodzera uye Kuiswa: Dhizaini yeH0 grounding system inofanirwa kuenderana nezvinodiwa chaizvo zvechikumbiro, uchifunga nezvezvinhu zvakaita seyekukanganisa mazinga, system voltage, uye mamiriro ekunze.
2.Nguva Dzose Kuedzwa uye Maintenance: Grounding masisitimu anofanirwa kugara achiongororwa uye kuedzwa kuti ave nechokwadi chekuti anochengetedza yakaderera impedance nzira yekuenda pasi. Nokufamba kwenguva, zvinongedzo zvinogona kuita ngura kana kusununguka, zvichideredza kushanda kwavo.
3.Kutevedzera Mitemo: Maitiro ekudzika anofanirwa kuenderana neakakodzera indasitiri zviyero uye mirau, senge iyo yakatarwa neIEEE, IEC, kana emunharaunda magetsi macode.
Mhedziso
Iyo H0 yekubatanidza mune matatu-chikamu kugovera shanduri chinhu chakakosha chinoita basa rakakosha mukudzika uye kugadzikana kwese kwesimba rekugovera simba. Kudzika pasi zvakanaka H0 hakungokwidziri kuchengetedzwa kwehurongwa uye kuchengetedzwa kwekukanganisa asiwo kunobatsira mukushanda kwakanaka kwemagetsi network.
Nguva yekutumira: Sep-18-2024