Insulation level ye transformer

Sechishandiso chakakosha chemagetsi musimba remagetsi, iyo insulation level yetransformer yakanangana nekuchengetedza uye kugadzikana kushanda kwesimba system. Iyo yekuvharisa nhanho ndiko kugona kweiyo transformer kutsungirira kwakasiyana-siyana overvoltages uye kwenguva yakareba yakanyanya kushanda voltage panguva yekushanda, uye chinhu chakakosha chisingagoni kuregererwa mukugadzira, kugadzira, kushanda uye kuchengetedza kweshanduko.

1. Tsanangudzo yezinga rekudzivirira re transformer Chiyero chekudzivirira chinoreva kukwanisa kwekugadzirisa chimiro chekushandura kuchengetedza kutendeseka uye kuchengeteka kana ichimira zvakasiyana-siyana overvoltages uye kushanda kwenguva refu. Izvi zvinosanganisira iyo voltage level iyo inogona kushivirirwa pamwe chete neinodzivirira mheni inosunga uye zvakananga zvinoenderana neiyo yakanyanya voltage Um yemidziyo.

2. Insulation structure ye transformer Maererano nokuti chiyero chekudzivirira chemutsara wemhepo inopera uye nzvimbo isina kurerekera yakafanana, mushanduri anogona kukamurwa kuva maviri ekugadzirisa zvivako: kuvharwa kwakazara uye kuvharidzirwa kwemazinga. Iyo transformer ine yakazara insulation dhizaini ine yakafanana insulation mwero weinotenderera mutsara wekupedzisira uye isina kwayakarerekera poindi, ine yakakwirira insulation margin, uye inokodzera matransformer ane high voltage mazinga uye yakaoma nharaunda yekushanda. Iyo transformer ine graded insulation chimiro inoisa akasiyana ekuisa mazinga pakati peanotenderera mutsara wekupedzisira uye isina kwayakarerekera poindi zvinoenderana nezvinodiwa chaizvo kukwirisa dhizaini yekuisa uye kuderedza mutengo.

3. Kuedzwa kwezinga rekudzivirira re transformer Kuti uone kuti chiyero chekudzivirira chekushandura chinosangana nezvinodiwa zvekugadzira, mutsara wekuongorora kwekudzivirira kunodiwa. Kune ma transformer ane voltage level ye220kV uye pazasi, 1-miniti yemagetsi frequency inomira voltage test uye impulse voltage test inowanzoitwa kuti iongorore simba radzo rekudzivirira. Kune ma transformer ane akakwira voltage mazinga, yakaoma yakaoma impulse bvunzo inodiwa zvakare. Mune bvunzo dzefekitori, inomira voltage bvunzo inowanzoitwa kanopfuura kaviri yakayerwa voltage kuti panguva imwe chete iongorore kushanda kwekudzivirira kweiyo main insulation uye longitudinal insulation.

Uye zvakare, kuyera kupikisa kwekudzivirira, kunyura chiyero uye polarization index yemhepo inomonereka pamwe chete nebhushi zvakare inzira yakakosha yekuongorora iyo yakazara insulation mamiriro eiyo transformer. Izvi zviyero zvinogona kunyatsoona hunyoro hwese hweiyo transformer insulation, hunyoro kana tsvina iri pamusoro pezvikamu, uye yakaomeswa kukanganisa kwekupinda.

4. Zvinhu zvinokanganisa chiyero chekudzivirira che transformer Panguva yekushanda kweshanduko, zvinhu zvinokanganisa chiyero chekudzivirira chinonyanya kusanganisira kupisa, humidity, nzira yekudzivirira mafuta uye overvoltage effect. 1) Tembiricha: Tembiricha chinhu chakakosha chinokanganisa mashandiro ekudzivirira kweshanduko. Iko kushanda kwekudzivirira kwezvinhu zvekudzivirira kunoderera nekuwedzera kwekushisa, uye kuvapo kwehunyoro mumafuta kuchawedzerawo kuchembera kwekudzivirira. Naizvozvo, kudzora tembiricha yekushanda yetransformer uye kuchengetedza mamiriro akanaka eiyo insulating zvinhu matanho akakosha ekuvandudza mwero wekudzivirira.

2) Humidity: Kuvapo kwekunyorova kunomhanyisa kuchembera kwezvinhu zvinodzivirira uye kuderedza kushanda kwayo kwekudzivirira. Naizvozvo, panguva yekushanda kweshanduko, hunyoro hwemukati hunofanirwa kudzorwa zvakanyanya kudzivirira iyo insulating zvinhu kubva pakunyorova.

3) Nzira yekudzivirira mafuta: Nzira dzakasiyana dzekudzivirira mafuta dzine mhedzisiro dzakasiyana pakuita kwekudzivirira. Sezvo nzvimbo yemafuta ye transformer yakavharwa yakavharwa kubva kumhepo, inogona kudzivirira zvinobudirira kuvhuvhuta uye kupararira kwe CO uye CO2 mumafuta, nekudaro kuchengetedza kuita kwakanaka kwemafuta anodzivirira.

4) Overvoltage mhedzisiro: Overvoltage mhedzisiro ndechimwe chinhu chakakosha chinokanganisa iyo insulation level ye transformer. Zvose mheni overvoltage uye kushanda overvoltage zvinogona kukonzera kukanganisa kune insulation chimiro che transformer. Naizvozvo, kana uchigadzira uye uchishanda shanduri, kukanganisa kwe overvoltage kunofanirwa kutariswa zvizere uye matanho ekudzivirira anoenderana anofanirwa kutorwa.