Mabhenefiti eZinc Oxide Arresters ane Built-in Current Transformers

1). Matambudziko netsika dzechinyakarezvinodzivirira zinc oxide.

1. Pane njodzi dzakavanzika kubasa
Parizvino,zvinodzivirira zinc oxidedzakaiswa pamwe chete nemidziyo yekutarisa, uye chimiro chadzo chinoratidzwa mumufananidzo uri pazasi.

Kanachinodzivirira zinc oxideKana ichishanda, kumanikidzwa kwasara kuchagadzirwa paR1 mumudziyo wekutarisa. Voltage yasara inogadzirwa nemidziyo yakasiyana yekutarisa ichave yakasiyana, asi zvichienderana ne "AC Gapless Metal Oxide Lightning Arrester" (GB 11032), voltage yasara inogona kusvika ku3kV. Nemamwe mashoko, terminal yekupinda yemudziyo wekutarisa ichave nevoltage yasara inosvika ku3kV kana arrester iri kushanda. Voltage iyi yasara ichaiswa pamusoro pevoltage yasara mushure mekunge zinc oxide arrester yavhurwa, izvo zvinowedzera kukosha kwevoltage yasara yezinc oxide arrester, iyo ine mhedzisiro yakaipa pakudzvinyirira zvakanyanya overvoltage. Semuenzaniso, achinhu chinodzivisa mhenikune substation ine voltage yakayerwa ye10kV, ine nominal discharge current ye5kA, kukosha kwakajairika kwevoltage yakasara ye lightning impulse current i27kV. Kana voltage yakasara ye3kV yemuchina wekutarisa yakaiswa pamusoro, voltage yasara yese ye arrester ichasvika 30kV, uye voltage yasara ichawedzera ne11.1%, izvo zvichachinja zvakanyanya hunhu hwe operating ye arrester uye zvinoderedza simba re arrester rekudzvinyirira overvoltage.

Kuti vashandi vebasa vakwanise kutarisa nekunyora ruzivo,chinodzivirira zinc oxideMudziyo wekutarisa unowanzoiswa panzvimbo inenge 1.8m kubva pasi. Kana paine voltage yepamusoro ye3kV pakupinda kwemudziyo wekutarisa, pachava nenjodzi huru yekuchengetedza kuchengetedzeka kwebasa.

2. Kune njodzi dzakavanda mukuvimbika kwekushanda

Wiring yechinyakarechinodzivirira zinc oxideuye mudziyo wekuona unoratidzwa paMufananidzo 1 pazasi. Pakati pazvo, base yekuputira, waya, uye mudziyo wekutarisa zvese zvimwe zvishandiso zvekuwedzera kuyerwa kwekubuda kwemvura kwe zinc oxide arrester pasi pevoltage yekushanda. Midziyo iyi haidiwi pakushanda kwakajairika kwe zinc oxide arrester pachayo. Kuwedzera kwezvishandiso izvi kunowedzera mukana wekuti michina isashande zvakanaka. Pasinei nekuti ndeipi michina ine dambudziko, zvinogona kukonzera kuti arrester imire kushanda uye kukanganisa kugadzikana kwekushanda kwemuchina. Semuenzaniso, pabasa chairo, base yekuputira inowanzova nematambudziko ekunyorova, kuputira kusina kujairika kana kukuvara, izvo zvinokanganisa mashandiro uye kutarisa kwearrester.

Zvichienderana nehuwandu hwepaindaneti, pakati pezvikanganiso zvakakomba uye zvakakomba zvezvinodzivirira zinc oxide mugore rakati, paive nezvikanganiso makumi maviri nerimwe mumuviri, mafungu emvura asingawanzobuda 110, 13 kusashanda zvakanaka kwekunze, 1 base isina kujairika (flange), 8 vatungamiriri vasina kujairika, uye matambudziko gumi emugero wemvura. Mudziyo wekutarisa waive usina kujairika ka183. Zvinogona kuonekwa kuti mimwe michina ichave nemhedzisiro yakakura pakushanda kwakasimba kwezvinodzivirira. Imwe data yehuwandu inoratidza kuti huwandu hwe2,509 hwezvikanganiso zvakaitika muzvinodzivirira mheni zve110 (66) kV zvichikwira mugore rakati, izvo zvikanganiso zvezvinodzivirira nekuda kwekuyera kwemagetsi asingawanzobuda zvakave 31.79% yehuwandu hwese hwezvikanganiso, uye zvikanganiso zvezvishandiso zvekutarisa zvakaita 52.89%.