UHV inogona kuwedzera zvakanyanya simba rekutapurirana remagetsi enyika yangu.Zvinoenderana nedata rakapihwa neState Grid Corporation yeChina, iyo UHV DC magetsi gidhi redunhu rekutanga rinogona kufambisa 6 miriyoni kilowatts emagetsi, akaenzana ne5 kusvika ka6 pane yeiyo iripo 500 kV DC magetsi grid, uye simba rekufambisa kureba zvakare 2 kusvika 3 nguva iyo yekupedzisira.Nokudaro, kubudirira kunovandudzwa zvikuru.Mukuwedzera, maererano nekuverenga kweState Grid Corporation yeChina, kana simba rekufambisa kwesimba rimwechete richiitwa, kushandiswa kwemitsara yeUHV kunogona kuchengetedza 60% yezviwanikwa zvevhu zvichienzaniswa nekushandiswa kwe500 kV high-voltage lines. .
Transformers zvakakosha midziyo mumagetsi emagetsi uye substations.Vane simba rinokosha pahutano hwemagetsi uye kugadzikana kwekushanda kwemagetsi emagetsi.Ultra-high voltage transformers inodhura uye ine mabasa anorema ekushanda.Naizvozvo, zvakakosha zvakanyanya kusimbisa tsvagiridzo pakubata kwavo kukanganisa.
Iyo transformer ndiyo moyo wesimba system.Zvinonyanya kukosha kuchengetedza uye kugadzirisa transformer kuti ive nechokwadi chekushanda kwakagadzikana kwesimba remagetsi.Mazuva ano, simba renyika yangu riri kuramba richikura munzira ye-ultra-high voltage uye hukuru hukuru.Kuvharidzirwa uye huwandu hwemagetsi emagetsi ari kuwedzera zvishoma nezvishoma, zvichiita kuti vashanduri vawedzere zvishoma nezvishoma munzira ye-ultra-high voltage uye simba guru.Zvisinei, iyo yakakwirira yezinga re transformer, iyo inowedzera mukana wekukundikana, uye yakanyanya kukuvadza kunokonzerwa nekukundikana kwekushanda kwekushandura.Nokudaro, kuongorora kukundikana, kuchengetedza uye kugadziriswa kwe-ultra-high transformers uye kutarisira kwemazuva ose kwakakosha mukusimudzira kugadzikana uye kuchengeteka kwesimba remagetsi.Kukwira kudenga kwakakosha.
Kuongororwa kweCommon Fault Zvinokonzera Zvikonzero zve
ultra-high voltage transformer kukanganisa kunowanzove kwakaoma.Kuti unyatso ongorora zvikanganiso zvetransformer, zvinodikanwa kuti utange wanzwisisa izvo zvakajairika zvinokonzeresa zvevashanduri:
1. Kupindira kwemutsara
Kukanganisa kwemutsara, inozivikanwawo semutsara inrush ikozvino, ndiyo inonyanya kukonzera kukanganisa kweshanduko.Inokonzerwa nekuvhara overvoltage, voltage peak, kukanganisa kwemutsara, flashover uye zvimwe zvisizvo mukufambisa uye kugovera.
2. Insulation kuchembera
Maererano nehuwandu, kuchembera kuchembera ndicho chikonzero chechipiri chekutadza kwetransformer.Insulation kuchembera kuchapfupisa zvakanyanya hupenyu hwebasa hwevashanduri uye kukonzera kutadza kweshanduko.Dhata inoratidza kuti kuchembera kuchembera kunoderedza hupenyu hwebasa hwevashanduri vane hupenyu hwebasa hwemakore makumi matatu nemashanu kusvika makumi mana.avhareji yakapfupikiswa kusvika kumakore makumi maviri.
3. Overload
Overload inoreva kushanda kwenguva refu kweshanduko ine simba rinopfuura zita rezita.Izvi zvinowanzoitika mumagetsi emagetsi uye madhipatimendi ekushandisa magetsi.Sezvo nguva yekuremerwa yekushanda ichiwedzera, tembiricha yekudzivirira inozowedzera zvishoma nezvishoma, iyo inomhanyisa kuita kwekudzivirira.Kuchembera kwezvikamu, kukwegura kwechikamu chinodzivirira, uye kuderedzwa kwesimba zviri nyore kukuvadzwa nemigumisiro yekunze, zvichiita kuti transformer isakundikana.
4. Kuiswa kusina kunaka.Zvisizvo
kusarudzwa kwemidziyo yekudzivirira uye kusarongeka kwekuchengetedza kuchengetedza kunokonzeresa njodzi dzakavanzika dzekutadza kwetransformer.Kazhinji kutaura, kutadza kwetransformer kunokonzerwa nekusarudzika kwakashata kwemidziyo yekudzivirira mheni, kuisirwa zvisina kunaka kwekudzivirira relay uye mabreaker edunhu zvinowanzoitika.
5. Zvisina kunaka
kuchengetedza Iko hakuna mashoma e-ultra-high transformer kukanganisa kunokonzerwa nekusagadziriswa kwezuva nezuva kusina kunaka.Semuenzaniso, kuchengetedza kusina kunaka kunokonzera kuti transformer ive yakanyorova;submersible mafuta pombi kugadzirisa haisi nguva, zvichiita kuti poda yemhangura isanganiswe mushanduri uye inoyamwa mhepo munzvimbo yakaipa yekumanikidza;wiring isiriyo;kushamwaridzana kwakasununguka uye chizvarwa chekupisa;Iyo pombi yekuchinja haisi panzvimbo, nezvimwe.
6. Kutadza kugadzira
Kunyange zvazvo zvikanganiso zve-ultra-high transformer zvinokonzerwa nehutano husina kunaka huri nhamba shoma chete, zvikanganiso zvinokonzerwa nechikonzero ichi zvinowanzova zvakanyanya uye zvinokuvadza.Semuyenzaniso, wakasununguka waya inogumira, mapedhi akasununguka, kushomeka kwakashata, kushomeka-kupfupi-kutenderera kuramba, nezvimwewo, zvinowanzo kukonzerwa nekukanganisa kwekugadzira kana kushomeka kwekugadzira.
Kusarudza kukanganisa uye kurapwa
1. Mamiriro ezvinhu anokanganisa A
transformer ine rated voltage ye (345 ± 8) × 1.25kV/121kV/35kV, chiyero chakayerwa che 240MVA/240MVA/72MVA, uye shanduri huru yave iri kushanda kwakagadzikana munguva yakapfuura.Rimwe zuva, ongororo yeoiri chromatographic yeshanduro huru yakaitwa, uye zvakaonekwa kuti iyo acetylene yemukati mumafuta anodzivirira eiyo main transformer body yaive 2.3 μl / l, saka samples dzakatorwa kaviri masikati nemanheru. zuva rimwechete kuti risimbise kuti iyo acetylene yemukati yemafuta anoshandura muviri muchikamu ichi chakawedzera zvakanyanya.Yakakurumidza kuratidza kuti pane kubuda kwechiitiko mukati me transformer, saka transformer huru yakavharwa kumativi emangwanani ezuva raitevera.
2. Pa-site kurapwa
Kuti uone hunhu hwekukanganisa kweshanduko uye nzvimbo yekuburitsa, kuongororwa kunotevera kwakaitwa:
1) Pulse yazvino nzira, kuburikidza nekuyedza ikozvino pulse, yakawanikwa kuti nekuwedzera kweiyo test voltage uye kuwedzera kwenguva yekuedzwa, chikamu chekuburitsa simba reshanduko chakawedzera zvakanyanya.The discharge initiation voltage uye kudzima voltage zvishoma nezvishoma inoderera apo muedzo unofambira mberi;
2) Partial discharge spectrum kuyerwa.Nekuongorora iyo yakawanikwa waveform dhizaini, inogona kutariswa kuti iyo yekuburitsa chikamu chetransformer iri mukati memhepo;
3) Ultrasonic chinzvimbo chekubuda kwechidimbu.Kuburikidza neakati wandei chidimbu discharge ultrasonic localization bvunzo, iyo sensor yakaunganidza munhu asina kusimba uye asina kugadzikana zvakanyanya ultrasonic masiginecha apo voltage yaive yakakwira, izvo zvakaratidza zvakare kuti nzvimbo yekuburitsa inofanira kuwanikwa mukati memhepo;
4) Oiri chromatography bvunzo.Mushure mekuedzwa kwechikamu chekubuda, chikamu chevhoriyamu cheacetylene chakakwira kusvika 231.44 × 10-6, zvichiratidza kuti pakanga paine simba rekubuda kwearc mukati memushanduri panguva yekuedzwa kwechikamu.
3. Kukundikana chikonzero chekuongorora
Zvinoenderana nekuongororwa kwepa-saiti, zvinotendwa kuti zvikonzero zvekutadza kubuda ndezvinotevera:
1) Insulating kadhibhodhi.Kugadziriswa kwekadhibhodhi yekudzivirira kune imwe dhigirii yekupararira, saka iyo insulating kadhibhodhi ine humwe hurema hwemhando, uye kugovera kwemagetsi munda kunoshandurwa panguva yekushandiswa;
2) Iyo yekuvharisa margin ye electrostatic skrini yevoltage inodzora coil haina kukwana.Kana iyo radius ye curvature iri diki zvakanyanya, iyo voltage yakaenzana mhedzisiro haina kunaka, izvo zvinokonzeresa kuparara kwekubuda panzvimbo iyi;
3) Kuchengetedza kwezuva nezuva hakusi kwakakwana.Equipment nyoro, chipanje uye mamwe marara zvakare chimwe chezvikonzero zvekutadza kubuda.
Kugadziriswa kwe transformer
akatora matanho anotevera ekugadzirisa kuitira kuti abvise kukanganisa kwekubuda:
1) Iyo yakakuvadzwa uye yekuchembera yekudzivirira zvikamu zvakatsiviwa, uye nzvimbo yekuputsika yeyakaderera-voltage coil uye coil inoronga magetsi yakagadziriswa, nekudaro ichivandudza simba rekudzivirira ipapo.Dzivisa kuputsika kunokonzerwa nekubuda.Panguva imwecheteyo, tichifunga kuti iyo huru yekuvharisa yakakuvadzwawo kune imwe nhanho panguva yekuputsika, iyo yese yekuvharira huru pakati peyakaderera-voltage coil uye voltage inodzora coil yakatsiviwa;
2) Bvisa equipotential tambo zvisungo zve electrostatic skrini.Vhura, bvisa chestnut yemvura inoputika, wedzera radius ye curvature yekona uye kuputira kuvhara, kuitira kuti kuderedza simba remunda;
3) Zvinoenderana nezvinodiwa zve 330kV transformer, muviri weshanduko wakanyatso kunyudzwa mumafuta uye wakaomeswa pasina chikamu.Muedzo wekubuda muchidimbu unofanirwawo kuitwa, uye unogona kubhadhariswa uye kuvhiyiwa chete mushure mekupasa bvunzo.Mukuwedzera, kuitira kuti udzivise kudzoka kwezvikanganiso zvekubuda, kuchengetedza kwemazuva ose uye kutungamirirwa kwevashanduri kunofanira kusimbiswa, uye kuongorora kweoil chromatography kunofanira kuitwa kakawanda kuti vaone kukanganisa munguva uye kubata mamiriro avo chaiwo.Kana kukanganisa kunowanikwa, nzira dzakasiyana dzehunyanzvi dzinofanirwa kushandiswa kutonga nzvimbo yekukanganisa mamiriro uye kutora matanho ekugadzirisa nenguva.
Kupfupisa, izvo zvinokonzeresa zve-ultra-high voltage transformers zvakaomarara, uye nzira dzakasiyana siyana dzehunyanzvi dzinofanirwa kushandiswa kutonga mhosva panguva yekurapwa panzvimbo, uye zvikonzero zvinokonzeresa zvinofanirwa kuongororwa zvakadzama.Zvisinei, zvakakosha kucherechedza kuti ma-ultra-high voltage transformers anodhura uye akaoma kuchengetedza.Kuti udzivise kukundikana, kuchengetedza kwezuva nezuva uye kutungamira kunofanira kuitwa zvakanaka kuderedza mukana wekukundikana.
Nguva yekutumira: Nov-26-2022