Iyo yemagetsi munda wekumanikidza kugovera mune AC tambo yunifomu, uye tarisiro yetambo yekuvharisa zvinhu iri pane dielectric inogara, iyo isingakanganiswe nekupisa. Kusiyana neizvi, kugovera kwekushushikana muDC tambo kwakakwirira pachikamu chemukati chekuvharisa uye kunokonzerwa neresistivity yemidziyo yekuisa. Insulation zvinhu zvinoratidza yakashata tembiricha coefficient, zvichireva kuti sezvo tembiricha inowedzera, resistivity inoderera.
Kana tambo ichishanda, kurasikirwa kwepakati kunoita kuti tembiricha ikwire, zvichitungamira kune shanduko mukudzivirira kweiyo insulation zvinhu. Izvi, zvakare, zvinokonzeresa kushushikana kwemunda wemagetsi mukati meiyo insulation layer kuti isiyane. Mune mamwe mazwi, pahukobvu hwakafanana hwekudzivirira, kuparara kwemagetsi kunodzikira sezvo tembiricha inokwira. Kune DC trunk mitsara mune yakagovaniswa magetsi zviteshi, kuchembera kweiyo insulation zvinhu kukurumidza zvakanyanya nekuda kwekuchinja kwekushisa ambient kana ichienzaniswa netambo dzakavigwa, inova chinhu chakakosha chekucherechedza.
Panguva yekugadzirwa kwetambo dzekudzivirira tambo, tsvina inounzwa zvisingadzivisiki. Aya matsvina ane yakaderera insulation resistivity uye akagovaniswa zvisina kuenzana pamwe neradial kutungamira kweiyo insulation layer. Izvi zvinoguma nekusiyana vhoriyamu resistivity munzvimbo dzakasiyana. Pasi peDC voltage, nzvimbo yemagetsi mukati meiyo insulation layer inosiyanawo, zvichikonzera kuti nzvimbo dzine yakaderera vhoriyamu resistivity kuchembera nekukurumidza uye kuve mapoinzi ekutadza.
Matambo eAC haaratidze chiitiko ichi. Mukutaura kwakapfava, kushushikana kuri paAC tambo zvinhu zvinogovaniswa zvakafanana, nepo muDC tambo, iyo insulation yekusimbisa inogara yakatarisana nenzvimbo dzisina kusimba. Naizvozvo, maitiro ekugadzira uye zviyero zveAC uye DC tambo dzinofanirwa kutungamirwa zvakasiyana.
Muchinjikwa-yakabatana polyethylene (XLPE)insulated tambo dzinoshandiswa zvakanyanya muAC application nekuda kweakanakisa dielectric uye emuviri zvivakwa, pamwe nekukwira kwazvo-kuita reshiyo. Nekudaro, kana ichishandiswa setambo dzeDC, vanotarisana nedambudziko rakakura rine chekuita nechaji yenzvimbo, iyo inonyanya kukosha mumatambo eDC-high-voltage. Kana mapolymers achishandiswa seDC tambo insulation, nhamba huru yemisungo yemuno mukati meiyo insulation layer inokonzeresa kuunganidzwa kwenzvimbo yekuchaja. Iko kukanganiswa kwechaji yenzvimbo pazvinhu zvekudzivirira kunonyanya kuratidzwa muzvikamu zviviri: kukanganiswa kwemunda wemagetsi uye kusakanganiswa kwemunda kusiri kwemagetsi, zvese zviri zviviri zvinokanganisa zvakanyanya kusimba rekudzivirira.
Space charge inoreva kuwandisa kwechaji inodarika kusarerekera kwemagetsi mukati mechikamu chechimiro chechinhu chikuru. Mune solids, yakanaka kana yakaipa nzvimbo machaji anosungwa kune enzvimbo simba mazinga, achipa polarization mhedzisiro nenzira yeakasungwa polarons. Space charge polarization inoitika kana maion emahara aripo mune dielectric material. Nekuda kwekufamba kweioni, maioni asina kunaka anoungana pakatarisana pedyo negetsirodhi yakanaka, uye ayoni akanaka anoungana pakatarisana pedyo negerodhi isina kunaka. Mundima yemagetsi yeAC, kutama kwechaji yakanaka uye yakaipa haigone kuenderana nekuchinja nekukurumidza musimba remagetsi emagetsi, saka nzvimbo yekuchaja mhedzisiro haiitike. Munzvimbo yemagetsi yeDC, zvisinei, munda wemagetsi unogovera maererano neresistivity, zvichiita kuti pave nekugadzirwa kwenzvimbo yekuchaja uye kukanganisa kugovera kwemagetsi. XLPE insulation ine huwandu hukuru hwematunhu enzvimbo, zvichiita kuti nzvimbo yekuchaja mhedzisiro yakanyanya kuoma.
XLPE insulation ikemikari yakabatana-yakabatana, ichigadzira yakasanganiswa muchinjiko-yakabatana chimiro. Sezvo isiri-polar polymer, tambo pachayo inogona kufananidzwa nehombe capacitor. Kana kufambisa kweDC kunomira, zvakaenzana nekuchaja capacitor. Kunyangwe iyo conductor musimboti yakadzikwa, kuburitsa kunoshanda hakuitike, kuchisiya huwandu hwakakosha hwesimba reDC rakachengetwa mutambo sechaji yekuchaja. Kusiyana netambo dzemagetsi eAC, uko machaji enzvimbo anodzingwa kuburikidza nekurasikirwa kwedielectric, machaji aya anoungana pakakanganisika tambo.
Nekufamba kwenguva, nekudzokororwa kwemagetsi nguva zhinji kana kuchinjika kwesimba razvino, tambo dzeXLPE dzakaiswa insulated dzinounganidza machaji enzvimbo, ichiwedzera kuchembera kweiyo insulation layer uye kuderedza hupenyu hwesevhisi yetambo.
Nguva yekutumira: Mar-10-2025