Kune akawanda mamiriro asina kunaka anogona kukonzera kukanganisa kune jenareta.Mamwe emamiriro ezvinhu aya mhedzisiro yekutadza mukati mejenareta kana imwe yeayo subsystems uye mamwe anobva musimba remagetsi pacharo.Tafura inotevera inopfupikisa marudzi ekukundikana kunogona kuitika uye nzira dzakabatana dzekudzivirira.
Stator Ground Faults
Kukundikana kunonyanya kuitika kwe stator winding ndiko kuputsika kwekudzivirira pakati pechikamu chimwe chete uye pasi.Zvisingaonekwe, kukanganisa uku kunogona kukurumidza kukanganisa jenareta musimboti.Moto unobvirawo pamichina inotonhodzwa nemhepo.Iko kukwanisa kwe stator differential element kuti ione kukanganisa kwepasi ibasa reiyo iripo yepasi kukanganisa ikozvino.Saka nekudaro, yakatsaurirwa pasi chengetedzo yekukanganisa inowanzodiwa kune iyo stator.
Majenareta anopa simba rinoshandiswa nemitoro yese musimba remagetsi uye yakawanda yesimba rekuita rinodiwa kuti ripe zvinhu zvinogonesa nekudaro kuchengetedza system voltage pamazita emazita.Masisitimu emagetsi ane simba shoma rekuchengetedza simba.Saka nekudaro, chizvarwa chakarasika chinofanirwa kutsiviwa nekukurumidza kana huwandu hwakaenzana hwemutoro hunofanira kudeurwa.Izvo zvinonyanya kukosha kuti iyo yekudzivirira sisitimu yejenereta yakachengeteka zvakanyanya panguva yekuvhiringidzika kwekunze.
Jenareta chimwe chikamu chehurongwa hwakaoma hunosanganisira prime mover, exciter, uye akasiyana anobatsira masisitimu.Pamusoro pekuonekwa kwemaseketi mapfupi, iyo jenareta yekudzivirira IED saka inodiwa kuti ione ruzhinji rwemamiriro asina kujairika anogona kukuvadza jenareta kana imwe yeayo subsystems.Majenareta anogona kuiswa mumhando mbiri huru: induction uye synchronous.Michina yekupinza kazhinji idiki muhukuru, kubva pasi kusvika padiki zana kVA, uye inowanzo fambiswa kubva kune inodzoreredza injini.Synchronous michina inokura muhukuru kubva kumazana akati wandei kVA kusvika 1200 MVA.
Synchronous jenareta anogona kufambiswa neakasiyana-siyana ekutanga movers, anosanganisira injini dzinodzokorora, ma hydro turbines, ma turbine ekupisa, uye mahombe emhepo.Mhando yeturbine inokanganisa dhizaini yejenareta uye nekudaro inogona kukanganisa kuchengetedza zvinodiwa.Saizi yejenareta uye nzira yayo yekugadzika inokanganisawo kuchengetedzwa kwayo.Michina midiki uye yepakati saizi inowanzobatanidzwa zvakananga kune network yekugovera (yakananga yakabatana).Mukugadzirisa uku michina yakawanda inogona kubatanidzwa kune rimwe bhazi.Michina mikuru inowanzobatanidzwa kuburikidza neakazvitsaurira magetsi ekushandura kune network yekutumira (yuniti yakabatana).
Chechipiri chemagetsi chinoshandura pamagetsi ejenareta chinopa simba rekubatsira kune chikwata.Majenareta akaiswa pasi kuitira kudzora kubva mukukuvadza magetsi ekufamba uye kufambisa kushanda kwemabasa ekudzivirira.Majenareta akabatana anowanzo kudzika pasi kuburikidza neakaderera impedance iyo inomisa pasi kukanganisa ikozvino kusvika 200-400 amps.Yuniti yakabatana michina inowanzo dzika pasi kuburikidza nepamusoro impedance iyo inomisa iripo kusvika isingasviki makumi maviri amps.
Kune yakananga yakabatana, yakaderera impedance yakavakirwa michina, yazvino-based yekuona nzira inoshandiswa.Kudzivirirwa uku kunoda kukurumidza uye kunzwisiswa kwezvikanganiso zvemukati zvepasi panguva imwechete yakachengeteka panguva yekukanganiswa kwekunze.Izvi zvinogona kuwanikwa kuburikidza neyakaganhurirwa pasi chikanganiso chinhu kana isina kwayakarerekera inotungamira chinhu.Iyo yakaganhurirwa yepasi chikanganiso chikamu chinoitwa muG30 uye G60 inoshandisa symmetrical chikamu chekudzivirira nzira inopa yakanyanya chengetedzo panguva yekukanganisa kwekunze ine yakakosha CT saturation.
Kune yeyuniti yakabatana, yakakwira impedance yakavakirwa michina, voltage-yakavakirwa nzira dzinowanzo shandiswa kupa pasi kuona kukanganisa.Uchishandisa musanganiswa weakakosha uye yechitatu harmonic voltage zvinhu, pasi chivharo chekuvhara kwe100% ye stator winding inogona kuwanikwa.GE relays inoshandisa chetatu harmonic voltage chinhu chinopindura kune reshiyo yekusarerekera uye yekupedzisira kukosha kweyechitatu harmonic.Ichi chinhu chiri nyore kuseta uye hachinzwe kune mutsauko wechitatu harmonic mazinga pasi pekushanda kwakajairika.
Stator Phase Faults
Kukanganisa kwechikamu kusingabatanidzi ivhu kunogona kuitika kumagumo emhepo kana mukati memutsetse uri mumichina ine makoiri echikamu chimwe chete mune imwechete slot.Kunyange zvazvo kukanganisa kwechikamu kunenge kushoma pane kukanganisa kwepasi, ikozvino inokonzerwa nemhosva iyi haina kuganhurirwa nekudzikamisa impedance.Saka nekudaro zvakakosha kuti zvikanganiso izvi zvionekwe nekukurumidza kuitira kudzikamisa kukuvadzwa kwemuchina.Sezvo iyo system XOR chiyero ichinyanya kukwirira pane jenareta, iyo stator differential element inonyanya kubatwa neCT saturation nekuda kweDC chikamu chezvino panguva yekuvhiringidza kwekunze.Iyo G60 stator differential algorithm inowedzera imwe chengetedzo mufomati yekutarisa cheki kana CT saturation ichifungidzirwa nekuda kweiyo AC kana DC zvikamu zvezvino.
Nguva yekutumira: Jan-30-2023