Tsanangudzo pfupi yehungwaru harmonic kubviswa uye arc kudzvinyirira mudziyo:
MuChina's 3 ~ 35KV magetsi ekupa uye kugovera sisitimu, mazhinji acho haana kwaakarerekera point isina kuvhurika masisitimu.Zvinoenderana nemaitiro eindasitiri yekambani yedu, kana imwe-phase grounding ikaitika, sisitimu inotenderwa kushanda zvisina kujairika kwemaawa maviri, iyo inoderedza zvakanyanya mari yekushandisa uye inovandudza kuvimbika kweiyo magetsi uye kugovera system.Nekudaro, nekuda kwekuwedzera zvishoma nezvishoma kwesimba rekupa simba rehurongwa, magetsi emagetsi achinja zvishoma nezvishoma kubva pamitsetse yekumusoro kuenda kumatambo etambo, uye capacitance ikozvino yehurongwa kusvika pasi ichave yakakura kwazvo.Kana iyo system ichiita imwe-phase grounding, iyo arc inogadzirwa neakawandisa capacitor ikozvino haisi nyore kudzimwa, uye inogona kuve inopindirana arc grounding mudziyo.Panguva ino, kuwanda kweiyo arc grounding mudziyo uye iyo ferromagnetic yakatevedzana resonance overvoltage yakakonzerwa nayo ichaisa mungozi zvakanyanya kushanda kwakachengeteka kwegedhi remagetsi.The overvoltage ye single-phase arc arc grounding device yakakomba, uye iyo isingajairike fault phase overvoltage level inosvika 3 ~ 3.5 nguva dzeyakajairika operation phase voltage.Kana iyo yakakwira overvoltage ichiita pane grid kwemaawa akati wandei, inonyatso kukuvadza kuvharirwa kwemidziyo yemagetsi.Mushure mekunge kusungirirwa kwemidziyo yemagetsi kwaunganidzwa uye kukuvadzwa kakawanda, kushaya simba kwekudzivirira kuchaumbwa, zvichikonzera kuparara kwekudzivirira uye kudzika pasi, zvichikonzera tsaona yemavara maviri pfupi yekutadza kwedunhu.Pamusoro pezvo, zvinokonzeresa tsaona dzekuchengetedza dzakadai sekuparara kwemidziyo yemagetsi (kunyanya motor insulation breakdown), kuputika kwetambo, voltage transformer saturation state excitation regulator inopisa PT, uye zinc oxide arrester kuputika.Kuti ugadzirise dambudziko repamusoro rinokonzerwa neakarebesa magetsi arc grounding device, iyo arc suppression coil inoshandiswa kubhadhara ikozvino ye neutral point capacitor, uye kuitika kwekazhinji kukanganisa kwemagetsi arc kunodzvinyirirwa.Chinangwa cheiyi nzira ndechekubvisa chiedza chemagetsi.Nekudaro, nekuda kweakawanda maitiro eiyo arc kudzvanya coil pachayo, hazvigoneke kunyatso kutsiva iyo capacitive ikozvino, kunyanya kukuvadzwa kunokonzerwa neakakwira frequency zvikamu kune magetsi haagone kubviswa.Pahwaro hwekudzidza akasiyana arc ekudzvinyirira mhete, kambani yedu yakagadzira HYXHX yakangwara arc kudzvinyirira mudziyo.
Nheyo yekushanda yeakangwara arc kudzvinyirira mudziyo:
1. Kana iyo system iri mukushanda kwakajairika, komputa inodzora bhodhi ZK yechishandiso inoramba ichitarisa chiratidzo chemagetsi chinogadzirwa nevoltage transformer PT;
2. Kana simba rekushanda rechipiri chechipiri chinotungamira chetatu chevoltage transformer chinoshanduka kubva kune yakaderera inogona kusiyana kusvika kune yakakwirira, zvinoreva kuti system software yakashata.Panguva ino, iyo microcomputer control board ZK inotanga nekukasira, uye panguva imwechete inotonga rudzi rwekukanganisa uye musiyano wechikamu zvinoenderana nekuchinja kweiyo PT yechipiri inobuda masaini Ua, Ub uye Uc:
a.Kana iyo imwe-phase PT yakaputsika, microcomputer controller ZK icharatidza musiyano wemutsara wakaputsika uye chiratidzo chemutsara wakaputsika, uye inobudisa passive switch contact signal panguva imwe chete;
b.Kana iri simbi yekumisa kukanganisa, iyo microcomputer control panel ZK inoratidza nzvimbo yekukanganisa nzvimbo uye yekumisa hunhu chiratidzo, uye inoburitsa passive switch yekubata chiratidzo panguva imwe chete.Zvinoenderana nezvinodiwa zvakakosha zvemushandisi, inogona zvakare kuburitsa yekuvhara chiito murairo kune vacuum contactor JZ mukhabhineti, iyo inogona kuderedza zvakanyanya kudhumhana kwemagetsi uye nhanho voltage, uye inobatsira kuve nechokwadi chekuchengetedzwa kwemunhu;
c.Kana iri arc kukanganisa, iyo microcomputer control panel ZK icharatidza pasi chikanganiso chikamu uye pasi hunhu chiratidzo, uye panguva imwe chete tumira murairo wekuvhara kune chinokanganisa chikamu vacuum contactor JZ, uye AC contactor inokurumidza kuvhara arc The grounding inoshandurwa kuita metal grounding.Pamusana pekumanikidzwa kwearc yemagetsi kumativi ose maviri, arc yemagetsi inodzika inodonha kusvika zero pakarepo, uye arc yemagetsi inodzima zvachose.Kana ikashandiswa mugedhi inodzorwa nemitsara yekutapurirana, vacuum contactor JZ yemidziyo inozodzima mushure memasekondi mashanu ekushanda.Kana iri yekukurumidza kutadza kumhanya, iyo system inopora.Kana iri kukanganisa zvachose, icharamba ichishanda uye ichiita basa mukumisa zvachose overvoltage.Uye yakabuda passive switch yekubata chiratidzo;
d.Kana mudziyo uine otomatiki yekusarudza basa, kana yebetsero yechipiri yekuvhura matatu voltage u ye transformer PT ichichinja kubva pakuderera kusvika kune yakakwira, iyo diki ikozvino yekugadzika sarudzo module pakarepo inounganidza zero-chikamu ikozvino yemutsara wega wega, uye kana paine hapana imwe-phase grounding Muchiitiko chesimbi yepasi chikanganiso chisingagoni kuwanikwa zvakare, sarudza mutsara wakakanganiswa maererano neamplitude ye zero-phase ikozvino yemutsara.Mutsara wemhosva unosarudzwa maererano nemusimboti wekuchinja kukuru kusati kwapera uye mushure mokunge arc yakadzika yadzimwa.
Mamiriro makuru ehungwaru arc kudzvinyirira mudziyo:
1. Chigadzirwa chacho chinomhanya nekukurumidza uye chinogona kumhanya mukati me30 kusvika ku40 milliseconds, iyo inopfupisa zvikuru nguva ye-single-phase grounding arc;
2. Iyo arc inogona kudzimwa pakarepo mushure mekunge mudziyo wave kushanda, zvichidzikamisa iyo arc grounding overvoltage mukati me online voltage renji.
3. Mushure mekushanda kwechigadzirwa, bvumira simba ikozvino regadziriro kuti ripfuurwe nguva dzose kweinenge maawa maviri, uye mushandisi anogona kutarisana netambo yakashata mushure mokunge apedza kushandiswa kwekuchinja kwemutoro.
4. Basa rekudzivirira remichina harina kukanganiswa nechiyero uye maitiro ekushanda kwemagetsi emagetsi;
5. Chigadzirwa chacho hachina mari.Magetsi emagetsi anogona kupa masaini emagetsi ekuyera uye kudzivirira, achitsiva echinyakare voltage transformer makabati.
6. Chigadzirwa chacho chine chiduku chiduku chekugadzirisa mutsara wekugadzirisa mutsara, iyo inogona kuvandudza zvikuru kururamisa kwekusarudzwa kwemutsara kuburikidza nekushandisa maitiro ekuchinja kukuru kwe zero-sequence current yemutsara wekukanganisa pamberi uye shure kwekudzima arc.
7. Chishandiso chinotora musanganiswa we-anti-saturation voltage transformer uye yakakosha yemazuva ano-inomisa harmonic canceller, iyo inonyanya kudzvinyirira ferromagnetic resonance uye inodzivirira zvinobudirira PT.
8. Iyi midziyo ine basa rekunyora zvikanganiso zvinowanzoitwa zvemagetsi arc grounding device, uye inopa data kune vatengi kuti vaongorore njodzi dzekuchengetedza.
Iwo akakosha mabasa ehungwaru arc kudzvinyirira uye harmonic ekubvisa mudziyo:
1. Kana chigadzirwa chacho chiri mukushanda kwakajairika, ine basa rePT cabinet
2. Panguva imwecheteyo, ine basa rekugadzirisa system alarm uye kuvhara;
3. System metal ground fault alarm, transfer system ground fault point basa;
4. Bvisa arc grounding device, iyo system software series resonance function;iyo yepasi voltage uye overvoltage alarm basa;
5. Iine ruzivo rwekurekodha mabasa akadai searm alarm yekubvisa nguva, kukanganisa kwechimiro, kukanganisa kwechikamu, system voltage, open circuit delta voltage, capacitor pasi ikozvino, nezvimwewo, izvo zviri nyore pakugadzirisa kukanganisa uye kuongorora;
6. Kana iyo system software ine imwechete-phase grounding kukanganisa, mudziyo unogona pakarepo kubatanidza kukanganisa pasi mukati meinenge 30ms kuburikidza nechikamu chakakosha-kupatsanura vacuum contactor.The grounding overvoltage yakagadzikana pachikamu chevoltage level, iyo inogona kunyatso kudzivirira maviri-mavara mapfupi edunhu kukanganisa kunokonzerwa ne-single-phase grounding uye zinc oxide arrester kuputika kunokonzerwa nearc grounding overvoltage.
7. Kana iyo simbi yakadzika, iyo yekusangana voltage uye nhanho voltage inogona kuderedzwa zvakanyanya, iyo inobatsira pakuchengetedza kuchengetedzwa kwemunhu (metal grounding inogona kuiswa kana mudziyo unoshanda zvinoenderana nemushandisi zvinodiwa);
8. Kana yakashandiswa mugetsi remagetsi rinonyanya kuumbwa nemitsara yekumusoro, vacuum contactor inovhara yega mushure memasekondi mashanu ekushanda kwechigadzirwa.Kana iko kutadza kwechinguvana, system yacho inodzokera kune yakajairika.Muchiitiko chekukundikana zvachose, chigadzirwa chichashanda zvakare kuti chigadzirise zvachose overvoltage.
9. Kana kukanganisa kwe PT kuchiitika muhurongwa, chigadziro chicharatidza mutsauko wechikamu chekukanganisa kwekubvisa uye kuburitsa chiratidzo chekubatana panguva imwe chete, kuitira kuti mushandisi anogona kuvharira zvakavimbika mudziyo wekudzivirira unogona kutadza nekuda kwePT kubviswa. .
10. Chigadzirwa chacho chakasiyana-siyana che "intelligent socket (PTK)" tekinoroji inogona kudzvanya zvakanyanya kuitika kweferromagnetic resonance, uye kudzivirira zvinobudirira platinum kubva pakupisa, kuputika uye dzimwe tsaona dzinokonzerwa nesystem resonance.
11. Chigadzirwa chacho chine RS485 socket, uye inotora mitemo yeMODBUS yekukurukurirana kuti ive nechokwadi chekuenderana pakati pemudziyo nemavhidhiyo ose ekuongorora maitiro, uye kuchengetedza mabasa ekufambisa data uye kure kure.
Mamwe mabasa ehungwaru arc kudzvinyirira uye harmonic ekubvisa mudziyo:
1. Iyo otomatiki yekusarudza basa inogona kugadzirwa maererano nezvinodiwa nemushandisi
2. Iyo HYLX diki ikozvino yekugadzika mutsara wekusarudza mudziyo wakagadzirwa nekambani yedu inonyanya kusarudza mutsara zvinoenderana neamplitude ye zero-sequence ikozvino kana system yakadzikwa.Iyo inokunda kushata kweiyo yakaderera kurongeka kwemutsara wekusarudza kana mutsara wekusarudza uchinonoka uye iyo arc yakadzikwa mune yakajairwa sarudzo mutsara mudziyo.
3. Basa rekubvisa (kubvisa) resonance (vibration) rinogona kugadziriswa maererano nezvinodiwa nemushandisi;
4. Iyo yakakosha anti-saturation voltage transformer yakagadziridzwa nekambani yedu inogona kugadzirwa kuti ienderane neyazvino-inomisa harmonic canceller, iyo inoparadza zvakanyanya ferromagnetic resonance mamiriro uye inodzivirira "kupisa platinum" uye "platinum kuchengetedza kuputika" kunokonzerwa neresonance overvoltage ACCIDENT. .
5. Microcomputer harmonic elimination device inogonawo kugadzirwa maererano nezvinodiwa nemushandisi kubvisa ferromagnetic resonance.
Nguva yekutumira: Kubvumbi-13-2023