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Parallel resistance device
Iyo parallel resistance device is set of resistance cabinet comprehensive line selection device yakamisikidzwa inoenderana neyakarerekera poindi yesystem uye yakabatana nearc kudzvanya coil.Kunyanya kushanda uye kwakarurama kusarudzwa kwemitsara yekukanganisa.Muiyo arc-inodzvinyirira coil system, iyo parallel kuramba yakasanganiswa mutsara yekusarudza mudziyo inogona kushandiswa kuwana 100% mutsara kusarudzwa kwechokwadi.Iyo parallel resistance device, kana parallel resistance cabinet, inoumbwa negrounding resistors, high-voltage vacuum connectors, transformers yazvino, kutora masignal azvino uye maconversion systems, resistance switching control systems, uye kutsigira yakatsaurirwa mitsara yekusarudza masisitimu.
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Jenareta kwazvakarerekera pfungwa grounding resistance cabinet
Iyo yekusarerekera poindi yekumisa kuramba kabati yeHongyan jenareta inoiswa pakati pekusarerekera poindi yejenareta uye pasi.Munguva yekushanda kwejenareta, imwe-phase grounding ndiyo yakajairika kukanganisa, uye nzvimbo yekukanganisa ichawedzera kuwedzera kana arcing ichidzika.Stator winding insulation kukuvara kana kunyange iron core inopisa nekupisa.Pasi rose, kune imwe-chikamu chepasi kukanganisa mumagetsi ejenareta, yakakwirira-resistance grounding panzvimbo isina kwayakarerekera yemajenareta inoshandiswa zvakanyanya kudzikamisa pasi ikozvino uye kudzivirira dzakasiyana-siyana overvoltage njodzi.Iyo isina kwayakarerekera poindi inogona kudzikwa kuburikidza neanopikisa kudzikamisa kukanganisa ikozvino kune yakakosha kukosha, kunatsiridza senitivity yekudzivirira relay uye kuita pakugumburwa;panguva imwecheteyo, kungopisa kwepanzvimbo kudiki kunogona kuitika panzvimbo yekukanganisa, uye kuwedzeredza kwechinguvana kunogumira kune yakajairika mutsara voltage.2.6 nguva dzeiyo neutral point voltage, iyo inomisa kudzimazve kwearc;inodzivirira iyo arc gap overvoltage kubva mukukuvadza iyo huru michina;panguva imwecheteyo, inogona kudzivirira zvinobudirira ferromagnetic resonance overvoltage, nekudaro kuve nechokwadi chekushanda kwakachengeteka kwejenareta.
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Transformer kwazvakarerekera point grounding resistance cabinet
Muiyo 6-35KV AC magetsi gidhi yesimba renyika yangu, kune nzvimbo dzisina kwazvakarerekera, dzakavakirwa kuburikidza nearc kudzvanya macoil, yakakwirira-kupokana pasi, uye kushoma-kupokana kwakadzika.Musimba remagetsi (kunyanya iyo yemaguta network magetsi ekupa system ine tambo semitsetse yekufambisa), pasi capacitive ikozvino yakakura, iyo inogona kuita kuti kuitika kwe "intermittent" arc pasi overvoltage ine chaiyo "yakakosha" mamiriro, zvichikonzera arcing. Iko kushandiswa kweiyo isina kwayakarerekera point resistance yekumisa nzira yekugadzirwa kwepasi overvoltage inoumba chiteshi chekuburitsa chesimba (chaji) mugidhi-kusvika-pasi capacitance, uye inobaya inopikisa ikozvino munzvimbo yekukanganisa, zvichiita kuti chikanganiso chepasi chitore. a resistance-capacitance nature, kuderedza uye The phase angle musiyano wevoltage inoderedza re-ignition rate mushure mekunge ikozvino pamhosva yadarika zero uye inotyora "critical" condition of the arc overvoltage, kuitira kuti overvoltage ishoma mukati me2.6 nguva dzechikamu chemagetsi, uye panguva imwechete inovimbisa yakakwirira-sensitivity pasi kuchengetedzwa kwekukanganisa Midziyo yacho inonyatso sarudza uye inocheka zvikanganiso zvekutanga uye zvechipiri zveanodyisa, nekudaro zvinodzivirira zvinobudirira kushanda kwakajairika kwehurongwa.
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Grounding resistance cabinet
Nekukurumidza kukura kwemagetsi emagetsi emumaguta uye ekumaruwa, shanduko huru dzakaitika mumagetsi emagetsi, uye network yekugovera inotungamirirwa netambo yakaonekwa.Ikozvino yepasi capacitance yakawedzera zvakanyanya.Kana imwe-chikamu chepasi chikanganiso chikaitika muhurongwa, pane mashoma uye mashoma anodzoreredzwa zvikanganiso.Kushandiswa kwekupokana kwepasi nzira haingochinji kune chikuru kusimudzira uye shanduko zvinodiwa zvegedhi remagetsi yenyika yangu, asi zvakare inoderedza nhanho yekudzivirira yemidziyo yekuparadzira magetsi negiredhi rimwe kana maviri, kuderedza kudyara kwegedhi remagetsi.Cheka chikanganiso, dzvanya resonance overvoltage, uye uvandudze kuchengetedzeka uye kuvimbika kwesimba remagetsi.
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Damping resistor bhokisi
Kuti udzivise iyo isina kuenzana voltage yenzvimbo yakarerekera yegidhi system kubva pakuwedzera nekuda kwekuiswa uye kuyerwa kweiyo arc kudzvinyirira coil apo iyo arc yekudzvinyirira coil ye pre-adjustment compensation mode iri kushanda pasi peyakajairika mamiriro emagetsi grid. , inonzverwa uye yakagadzirwa.Kana gidhi remagetsi richimhanya zvakajairika, gadzirisa iyo inductance yearc kudzvinyirira coil kune yakakodzera chinzvimbo pamberi, asi panguva ino inductance uye capacitive reactance inenge yakaenzana, izvo zvichaita kuti gidhi remagetsi rive munzvimbo iri pedyo neresonance, zvichikonzera. the neutral point voltage kukwira.Kuti udzivise izvi Kana chiitiko ichi chikaitika, chigadziriso chinodzivirirwa chinowedzerwa kune arc suppression coil compensation mudziyo mune pre-adjustment mode, kuitira kudzvanya displacement voltage yeyasina kwayakarerekera kune inodiwa chinzvimbo uye kuve nechokwadi chakajairwa. kushanda kwe network yemagetsi.
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Yakazara seti yechikamu-inodzorwa arc kudzvinyirira coil
Tsanangudzo yenheyo yemaitiro
Iyo phase-inodzorwa arc kudzvinyirira coil inonziwo "yakakwira pfupi-yedunhu impedance type", ndiko kuti, iyo yekutanga mhepo yearc kudzvinyirira coil mumudziyo wakazara yakabatana kune kwayakarerekera nzvimbo yekugovera network seyainoshanda mhepo, uye. iyo yechipiri mhepo inotenderera inoshandiswa seyekudzora mhepo neaviri akadzokera kumashure akabatana The thyristor ipfupi-inotenderera, uye ipfupi-yedunhu ikozvino mune yechipiri mhepo inogadziriswa nekugadzirisa conduction angle ye thyristor, kuitira kuti uone iyo inodzoreka gadziriso ye reactance value.inochinjika.
Iko conduction angle ye thyristor inosiyana kubva pa 0 kusvika 1800, kuitira kuti iyo yakaenzana impedance ye thyristor inosiyana kubva ku infinity kusvika ku zero, uye inobuda muripo wezvino inogona kuramba ichigadziriswa pasina nhanho pakati pe zero uye yakayerwa kukosha.
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Capacitance-inogadziriswa arc kudzvinyirira coil yakazara seti
Tsanangudzo yenheyo yemaitiro
Iyo inogadzirisa-inogadzirisa arc inodzvanya coil ndeyekuwedzera yechipiri coil kune arc inodzvanya coil mudziyo, uye akati wandei mapoka e capacitor mitoro akabatanidzwa mukufanana pane yechipiri coil, uye chimiro chayo chinoratidzwa mumufananidzo uri pazasi.N1 ndiyo mhepo huru, uye N2 ndiyo yechipiri mhepo.Mapoka akati wandei ema capacitor ane vacuum switch kana thyristors akabatana mune parallel padivi rechipiri kugadzirisa capacitive reactance yechipiri side capacitor.Zvinoenderana nemusimboti wekushandurwa kwe impedance, kugadzirisa iyo capacitive reactance kukosha kwechikamu chechipiri inogona kusangana nezvinodiwa zvekuchinja inductor ikozvino yedivi rekutanga.Kune zvakawanda zvakasiyana-siyana zvibvumirano uye kusanganiswa kwehukuru hwekukwanisa kukosha uye nhamba yemapoka kuti asangane nezvinodiwa zvekugadzirisa mararamiro uye kunyatsojeka.
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Yakazara seti ye bias magineti arc kudzvinyirira coil
Tsanangudzo yenheyo yemaitiro
Biasing type arc inodzvanya coil inotora kurongeka kweiyo magnetized iron core segment muAC coil, uye iyo magineti permeability yesimbi musimboti inoshandurwa nekuisa iyo DC excitation ikozvino, kuitira kuti uone kuenderera kugadziridzwa kweiyo inductance.Kana imwe-chikamu chepasi chikanganiso chikaitika mumagetsi emagetsi, mutongi pakarepo anogadzirisa inductance kubhadhara pasi capacitance ikozvino.
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HYXHX akatevedzana akangwara arc kudzvinyirira mudziyo
Munyika yangu 3 ~ 35KV magetsi emagetsi sisitimu, mazhinji acho haana kwaakarerekera point ungrounded system.Maererano nemitemo yenyika, kana imwe-phase grounding ikaitika, hurongwa hunobvumirwa kushanda nemhosva kwemaawa maviri, iyo inoderedza zvikuru mari yekushanda uye inovandudza kuvimbika kwegadziriro yemagetsi.Nekudaro, nekuda kwekuwedzera zvishoma nezvishoma musimba rekupa simba rehurongwa, iyo nzira yekupa magetsi ndiyo Mutsetse wepamusoro unoshandurwa zvishoma nezvishoma kuita tambo yetambo, uye iyo capacitance ikozvino yehurongwa kusvika pasi ichave yakakura kwazvo.Kana iyo sisitimu yakadzimwa-chikamu, iyo arc inoumbwa neakawandisa capacitive ikozvino haisi nyore kudzima, uye inokwanisa kushanduka kuita intermittent arc grounding.Panguva ino, iyo arc grounding overvoltage uye iyo ferromagnetic resonance overvoltage inonakidzwa nayo ichave Inotyisidzira zvakanyanya kushanda kwakachengeteka kwegedhi remagetsi.Pakati pavo, iyo single-phase arc-ground overvoltage ndiyo yakanyanya kuoma, uye iyo overvoltage level yeiyo isiri-yakaipa chikamu inogona kusvika 3 kusvika 3.5 nguva yakajairika yekushanda chikamu voltage.Kana iyo yakakwira overvoltage inobata pane gidhi remagetsi kwemaawa akati wandei, zvinongokuvadza kuvharirwa kwemidziyo yemagetsi.Mushure menguva dzinoverengeka dzekukuvadzwa kwekuvharisa kwemidziyo yemagetsi, nzvimbo isina simba yekuisa inoumbwa, izvo zvinokonzeresa tsaona yekuputsika kwepasi uye kupfupika kwedunhu pakati pezvikamu, uye panguva imwechete kukonzeresa kuparara kwemidziyo yemagetsi (kunyanya. iyo insulation breakdown yemota)), iyo cable blasting phenomenon, saturation yevoltage transformer inomutsa ferromagnetic resonance body kupisa, uye kuputika kweanosunga uye dzimwe tsaona.
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Yakazara seti yekutendeuka-inogadzirisa arc kudzvinyirira coil
Mushanduko uye kugovera network system, kune marudzi matatu easina kwaakarerekera point grounding nzira, imwe iine kwayakarerekera point ungrounded system, imwe yacho inzvimbo isina kwayakarerekera kuburikidza nearc suppression coil grounding system, uye imwe yacho inzvimbo isina kwayakarerekera kuburikidza nekupikisa. grounding system system.
