Surge arrester maitiro:
1. Iyo zinc oxide arrester ine yakakura kuyerera simba,
izvo zvinonyanya kuratidzwa mukugona kweanosunga kutora akasiyana mheni overvoltages, simba frequency transient overvoltages, uye kushanda overvoltages.Kuyerera kweiyo zinc oxide surge arresters inogadzirwa naChuantai inosangana zvizere kana kutopfuura zvinodikanwa zvemitemo yenyika.Iwo maratidziro akadai senge line discharge level, simba rekunyudza simba, 4/10 nanosecond yakakwira ikozvino kukanganisa kupikisa, uye 2ms square wave kuyerera kugona kwasvika padanho rinotungamira repamba.
2. Yakanakisa kudzivirira maitiro
ye zinc oxide arrester Zinc oxide arrester chigadzirwa chemagetsi chinoshandiswa kuchengetedza zvakasiyana-siyana zvemagetsi mumagetsi emagetsi kubva pakukanganiswa kwepamusoro, uye ine kuchengetedzwa kwakanaka kwekuita.Nekuti iyo nonlinear volt-ampere hunhu hwe zinc oxide vharafu yakanaka kwazvo, mazana mashoma mamicroamps ezvino kuyerera kuburikidza neyakajairwa kushanda voltage, iyo iri nyore kugadzira mune isina gap chimiro, kuitira kuti ive nekudzivirira kwakanaka kuita, chiedza. uremu uye saizi diki.feature.Kana iyo overvoltage inopinda, ikozvino inoyerera kuburikidza nevhavha inowedzera nokukurumidza, uye panguva imwechete inogadzirisa amplitude ye overvoltage uye inobudisa simba rekuwedzera.Mushure meizvozvo, zinc oxide valve inodzokera kune yakakwirira-resistance state kuita kuti simba remagetsi rishande zvakajairika.
3. Kuiswa chisimbiso kwe zinc oxide arrester yakanaka.The
zvisungo zvinotora bhachi remhando yepamusoro recomposite rine kuita kwekuchembera kwakanaka uye kusimba kwemhepo.Matanho akadai sekudzora kudzvanywa kwemhete yekuisa chisimbiso uye kuwedzera sealant inogamuchirwa.Iyo bhachi yeceramic inoshandiswa sechinhu chekuisa chisimbiso kuve nechokwadi chekuisa chisimbiso chakavimbika.Kuita kwemusungwa kwakagadzikana.
4. Iyo mechanical performance ye zinc oxide arrester
inonyanya kutarisa zvinhu zvitatu zvinotevera:
⑴Kudengenyeka kwenyika kwainotakura;
⑵Iyo yakanyanya kudzvinyirirwa nemhepo inobata pane anosunga ⑶Iyo
pamusoro pemusungiri inotakura tension inobvumirwa nepamusoro yewaya.
5. Zvakanaka
anti-kusvibiswa kwekushanda kwe zinc oxide arrester Hapana gap zinc oxide arrester ine yakakwirira kusvibiswa kwekuita.
Iwo creepage akananga kureba mamaki anotarwa neazvino nyika zviyero:
⑴Kirasi II nzvimbo dzakasvibiswa zvine mwero: creepage chaiyo chinhambwe 20mm/kv
⑵Kirasi III nzvimbo dzakasvibiswa zvakanyanya: creepage chaiyo chinhambwe 25mm/kv
⑶IV kirasi nzvimbo dzakasvibiswa zvakanyanya: creepage chaiyo chinhambwe 31mm / kv
6. High kushanda kuvimbika kwe zinc oxide arrester Kuvimbika
yekushanda kwenguva refu kunoenderana nehutano hwechigadzirwa uye kana kusarudzwa kwechigadzirwa kunonzwisisika.Hunhu hwezvigadzirwa zvayo zvinonyanya kukanganiswa nezvinhu zvitatu zvinotevera:
A. Kunzwisisa kwechimiro chese chemusungwa;
B. Iyo volt-ampere maitiro uye kuchembera kuramba kwe zinc oxide valve plate;
C. Kuisa chisimbiso kwemusungwa.
7. Power frequency kushivirira
Nekuda kwezvikonzero zvakasiyana-siyana musimba remagetsi senge-chikamu chekugadzika, kwenguva refu capacitive mhedzisiro, uye kuremerwa kwemutoro, iyo magetsi frequency voltage inozowedzera kana kupfuudza overvoltage ine yakakwirira amplitude ichagadzirwa.Kugona kumira kune imwe simba frequency voltage inosimuka mukati meimwe nguva yenguva.
Kubata kushandiswa:
1. Inofanira kuiswa pedyo nedivi rekugovera transformer.The
metal oxide arrester (MOA) yakabatanidzwa mukufambirana neshanduro yekugovera panguva yekushanda kwakajairika, ine mugumo wepamusoro wakabatana nemutsara uye wepasi wakadzika pasi.Kana paine overvoltage pamutsetse, dhizaini yekugovera panguva ino ichamira kudonhedzwa kwemagetsi matatu-chikamu chinogadzirwa kana iyo overvoltage inopfuura nepamusungwa, waya yekutungamirira uye yekumisa mudziyo, iyo inonzi residual voltage.Muzvikamu zvitatu izvi zvekuwedzeredza, iyo yakasara voltage pane inosunga ine hukama nekuita kwayo, uye kukosha kwayo kwasara kwevoltage ndeyechokwadi.Iyo yakasara voltage pamudziyo wepasi inogona kubviswa nekubatanidza pasi pasi conductor kune yekugovera transformer goko, uye wozoibatanidza kune yepasi mudziyo.Maitiro ekudzikisa yakasara voltage pane inotungamira inova kiyi yekudzivirira yekugovera transformer.Iyo impedance yemutungamiri ine hukama neiyo frequency yeizvino kupfuura nepairi.Iyo yakakwirira frequency, iyo yakasimba inductance yewaya uye yakakura iyo impedance.Zvinogona kuonekwa kubva kuU = IR kuti kuderedza kusara kwemagetsi pamutungamiri, iyo impedance yemutungamiri inofanira kuderedzwa, uye nzira inogoneka yekuderedza kukanganiswa kwemutungamiri kupfupisa chinhambwe pakati peMOA ne kugovera transformer kuti kuderedze impedance yemutungamiri uye kuderedza kudonha kwemagetsi emutungamiri, saka Zvakakodzera zvakanyanya kuti musungwa anofanira kuiswa pedyo neshanduro yekugovera.
2. Rutivi rwepasi-voltage rwekugovera transformer inofanirawo kuiswa
Kana pasina MOA yakaiswa padivi repasi-voltage yeshanduko yekugovera, kana iyo yakakwira-voltage side suurge arrester inoburitsa mheni ikozvino pasi, kudonha kwevoltage kuchaitika pachigadziro chepasi, uye kudonha kwemagetsi kuchaita pa iyo isina kwayakarerekera poindi yeyakaderera-voltage divi inomonereka kuburikidza nekugovera transformer goko panguva imwe chete.Naizvozvo, iyo mheni inoyerera muyakaderera-voltage padivi pemhepo inokonzeresa yakakwira mukana (kusvika 1000 kV) muyakakwira-voltage divi inomonereka zvichienderana neshanduko reshiyo, uye izvi zvinogoneka zvichave zvakasimudzwa nemagetsi emheni yekumusoro. -voltage side winding, zvichikonzera kuine kwazvakarerekera kwenzvimbo yekumusoro-voltage side inomonereka inosimuka, ichipwanya insulation padyo nenzvimbo isina kwayakarerekera.Kana MOA yakaiswa kune yakaderera-voltage side, kana iyo high-voltage side MOA ichiburitsa kusimudza kugona kwechigadzirwa chekuisa kune imwe kukosha, iyo low-voltage side MOA inotanga kubuda, kuitira kuti musiyano uripo pakati peiyo yakaderera. -voltage side winding outlet terminal uye yayo isina kwayakarerekera point uye goko rinodzikira, kuitira kuti Inogona kubvisa kana kuderedza pesvedzero ye "reverse shanduko" inogona.
3. Iyo MOA pasi wire inofanira kubatanidzwa kune kugovera transformer shell
.Iyo MOA pasi waya inofanira kubatanidzwa zvakananga kune kugovera transformer shell, uye ipapo shell inofanira kubatanidzwa pasi.Hazvina kunaka kubatanidza tambo yepasi yemusungwa zvakananga pasi, uye wozotungamirira imwe tambo yepasi kubva pamurwi wepasi kusvika kune ganda rekushandura.Mukuwedzera, tambo yepasi yemusungwa inofanira kuva pfupi sezvinobvira kuderedza yakasara voltage.
4. Kunyatsotevera zvinodiwa nemirairo yezviyero zvekugadzirisa nguva dzose.
Nguva nenguva kuyera kudzivirira kwekudzivirira uye kuvuza ikozvino kweMOA.Kamwe iyo MOA yekuvharisa kuramba yakadzikiswa zvakanyanya kana kuputsika, inofanirwa kutsiviwa nekukurumidza kuti ive yakachengeteka uye ine hutano kushanda kweshanduro yekugovera.
Kubata uye kugadzirisa:
Mukushanda kwemazuva ese, kusvibiswa kwenzvimbo yeporcelain sleeve yeanosunga kunofanirwa kutariswa, nekuti kana porcelain sleeve nzvimbo yakasvibiswa zvakanyanya, kugovera kwemagetsi kunenge kusina kuenzana.Mumusungwa ane parallel shunt resistance, kana kugoverwa kwemagetsi kwechimwe chezvikamu kunowedzera, ikozvino inopfuura kuburikidza nekupikisa kwayo kunopesana kuchawedzera zvakanyanya, izvo zvinogona kupisa kupikisa kwakafanana uye kukonzera kukundikana.Mukuwedzera, zvinogonawo kukanganisa arc yekudzima kushanda kwevhavhavhavhavhavhavhavha arrester.Naizvozvo, kana pamusoro pemheni inosunga porcelain sleeve yakasvibiswa zvakanyanya, inofanirwa kucheneswa nenguva.
Tarisa waya yekutungamirira uye yekudzika pasi-lead yeanosunga, kana pane mavanga ekutsva uye tambo dzakatyoka, uye kana discharge recorder yakatsva.Kuburikidza nekuongorora uku, zviri nyore kuwana chikanganiso chisingaoneki chemusungwa;Kupinda kwemvura uye kunyorova kunogona kukonzera tsaona zviri nyore, saka tarisa kuti mubatanidzwa we simende uri pajoinhi pakati peporcelain sleeve neflange wakasimba here, woisa chivharo chisingapinde mvura pawaya inotungamira ye10 kV valve-type arrester kudzivirira mvura inonaya kubva. infiltrating;chengetedza mubati uye magetsi akadzivirirwa Kana nzvimbo yemagetsi pakati pemichina inosangana nezvinodiwa, mubati wemheni anofanira kunge ari pedyo sezvinobvira kune zvigadzirwa zvemagetsi zvakachengetedzwa, uye muchengeti wemheni anofanira kutarisa chiito cherekodha mushure mekutinhira kwemheni;tarisa iyo inodonha ikozvino, uye kana iyo magetsi frequency discharge voltage yakakura kupfuura kana yakaderera pane yakajairwa kukosha, inofanirwa kuwedzeredzwa uye kuyedzwa;apo rekodha yekuburitsa inoshanda kakawanda, inofanira kudzokororwa;kana pane kuputika pakubatanidzwa pakati pe porcelain sleeve uye simenti;apo flange ndiro uye pedhi yerabha inodonha, inofanira kugadziriswa.
Kudzivirira kwekudzivirira kwemusungwa kunofanira kuongororwa nguva dzose.Iyo 2500 volt insulation mita inoshandiswa kuyerwa, uye kukosha kwakayerwa kunoenzaniswa nemhedzisiro yapfuura.Kana pasina shanduko iri pachena, inogona kuramba ichiiswa mukushanda.Kana iyo insulation yekudzivirira ichidonha zvakanyanya, inowanzo konzerwa nekusasunga chisimbiso uye kunyorova kana spark gap pfupi pfupi.Kana yakaderera pane kukosha kwakakodzera, bvunzo yehunhu inofanirwa kuitwa;apo kudzivirira kwekudzivirira kunowedzera zvakanyanya, zvinowanzoitika nekuda kwekusagadzikana kwekubatana kana kutsemuka kwemukati parallel kuramba pamwe nekuzorora kwechirimo uye kuparadzaniswa kwechikamu chemukati.
Kuti uwane zvikanganiso zvakavanzwa mukati memuvharivha wevhavha munguva, bvunzo dzekudzivirira dzinofanirwa kuitwa pamberi pemwaka wekutinhira kwegore negore.
Nguva yekutumira: Zvita-15-2022