Iko kuita kunokonzerwa neiyo pfupi network yearc furnaces yakakura uye yepakati pasi pemvura inosvika makumi manomwe muzana ekuita kwekushanda kwechoto chekudziya.Iyo undermerged arc furnace short network inoreva izwi rekare kune akasiyana siyana ekudzvinyirira uye yakakwira ikozvino magetsi conductors kubva kune yakaderera boka rekubuda kumagumo emagetsi echoto chinoshandura kusvika padanho remagetsi.Kunyangwe kureba kweiyo mambure mapfupi echoto chearc yakanyura hakuna kukura, mapfupi mambure anopikisa uye zvinobatika zvine simba guru pamidziyo yearc furnace yakanyura.Nekuda kwechimiro chayo chinoomesera, ikozvino inopfuura nepairi inosvika mazana ezviuru zvema amperes.Nekuti iyo pfupi-yedunhu reactance kukosha kazhinji kacho 3 kusvika 6 nguva yeanopikisa, iyo pfupi-circuit reactance inonyanya kutarisisa kugona, simba chinhu uye simba rekushandisa nhanho yeyakanyura arc vira.
The common manual compensation method ndeyekubatanidza series compensation capacitor bank kune high-voltage bhazi padivi rekutanga re submerged arc furnace transformer, kureva, high-voltage compensation.Sezvo muripo wekuita uchingogona kubatsirwa kubva kumutsara usati wasvika nzvimbo uye gidhi remagetsi parutivi rwemagetsi emagetsi system, iyo magetsi emagetsi system inogona kusangana nezvinodiwa zvine chekuita neiyo simba chinhu cheiyo mutsara wekutakura, asi haigone kutsiva iyo transformer windings. , mapfupi network, uye maelectrodes echoto chemugodhi.Simba rekuita resesecondary-side low-voltage uye high-current circuits, kureva kuti, midziyo haigone kubatsirwa nekuwedzera kwekugadzirwa kwezvigadzirwa zvemigodhi yevira uye kuderedzwa kwekushandiswa kwesimba uye kushandiswa kwemigodhi.
Kazhinji, kumisikidza harmonic countermeasures uye concentrated harmonic countermeasures inogona kusanganiswa kugadzira inodhura-inoshanda harmonic countermeasure.Kune harmonic sosi mitoro ine simba rakakura (senge frequency furnaces, inverters, nezvimwewo), harmonic countermeasures inogona kushandiswa kumisikidza harmonic countermeasures , kuderedza harmonic ikozvino jekiseni mugridi.Zvine simba diki simba uye akapararira asina mitsetse mitoro inogona kubatwa zvakafanana mubhazi.Hongyan APF inoshanda sefa inogona kushandiswa, uye harmonic control inogona kushandiswa zvakare.
Iyo undermerged arc furnace ndeye yakakwira simba rekushandisa yemagetsi kunyunguduka muvira ine hunhu hweresistor yemagetsi arc furnace.Chinhu chesimba chinotarirwa nearc uye kuramba R muchoto uye kukosha kwekupikisa R uye reactance X mumagetsi ekugadzirisa magetsi (kusanganisira transformers, short-circuit nets, collector rings, conductive jaws uye electrodes).
cosφ=(r #+r)/resistance x kukosha kweresistor r kazhinji haichinji kana iyo arc furnace yakanyura iri kushanda, zvinoenderana nekugadzirwa uye kuisirwa kwepfupi network uye magetsi nhanho marongero.Kupokana R kwakabatana nekusimba kwazvino kweiyo pfupi-yedunhu kumusoro kwekumusoro kwezvikamu panguva yekushanda, uye shanduko haina kukura, asi kupikisa R chinhu chakakosha pakusarudza simba reiyo yakadzika arc furnace panguva yekushanda. .
Sezvo iyo yakanyura arc furnace ine kushomeka kushoma pane mamwe magetsi ekunyungudutsa mavira, simba rayo rinoderedzwawo saizvozvo.Pamusoro pesimba rechisikigo remuchoto mudiki wevira rinosvika pamusoro pe0.9, chiyero chesimba remuchoto muhombe ine simba rinopfuura 10000KVA zvese zviri pazasi 0.9, uye kukura kwechoto chemugodhi ndiko kuderera kwesimba. factor.Izvi zvinokonzerwa nekuremerwa kukuru kwearc furnace transformer munzvimbo yakakura, iyo yakareba network ipfupi, uye kurema kwemarara akaiswa muchoto, izvo zvinowedzera kuita kweiyo pfupi network, nekudaro kuderedza simba rekuita. yevira rakanyura rearc.
Kuti uderedze mashandisirwo emagetsi emagetsi uye kuvandudza kunaka kweiyo magetsi system, Power Supply Bureau inotara kuti simba rekambani yemagetsi rinofanira kunge riri 0.9, zvikasadaro kambani yemagetsi inorangwa nezvirango zvakakura.Uye zvakare, iyo yakaderera simba chinhu inozodzikisawo inouya mutsetse voltage yearc furnace yakanyura, iyo inokuvadza iyo calcium carbide smelter.Naizvozvo, pari zvino, hombe-yakavharwa arc furnaces kumba nekune dzimwe nyika inoda kuisa reactive simba muripo wemidziyo yekuvandudza simba remagetsi earc furnaces.
Low voltage filter muripo
1. Nheyo
Low-voltage compensation mudziyo usingashandi wemuripo unoshandisa tekinoroji yemazuva ano uye tekinoroji pfupi-network kubatanidza hukuru-hukuru, hurefu-ikozvino ultra-low voltage simba simba kune chikamu chechipiri chechoto chemugodhi.Chishandiso ichi hachisi chete kuita kwakanyanya kweiyo musimboti wekudzoreredza simba rekubhadhara, asi zvakare unogona kuita kuti simba remuchoto wemugodhi rifambe nemutengo wepamusoro, kuderedza reactive simba rekushandisa kweiyo pfupi network uye yekutanga side, uye kubvisa iyo yechitatu, yechishanu uye yechinomwe harmonics.Balance the three-phase output power kuti uwedzere kubuda simba kwe transformer.Chinangwa chekutonga ndechekuderedza iyo isina kuenzana dhigirii yechitatu-chikamu simba uye kuwana yakaenzana matatu-chikamu simba.Wedzera poto yekusimbisa, tarisa kupisa, wedzera tembiricha yechoto pamusoro, uye nekuchimbidza kuita, kuitira kuti uwane chinangwa chekuvandudza kunaka kwechigadzirwa, kuderedza kushandiswa, uye kuwedzera kugadzirwa.
Iyi tekinoroji inoshandisa tekinoroji yechinyakare pa-saiti yekubhadhara kune yechipiri yakaderera-voltage parutivi rwechoto chemugodhi.Simba rekuita rinogadzirwa ne capacitor rinopfuura nemutsetse mupfupi, chikamu chayo chinotorwa nemugodhi wechoto chekushandura kubva muhurongwa, uye chimwe chikamu chinotsiva simba rinoshanda remugodhi wefurnace transformer, short network uye electrodes.Kurasikirwa kwesimba kunowedzera kushandiswa kwesimba rinoshanda muchoto.Panguva imwecheteyo, chikamu-chakapatsanurwa muripo unogamuchirwa kuita simba rinoshanda pamagetsi matatu-chikamu chearc furnace yakaenzana, kuitira kuvandudza simba rekuita, kuderedza kusaenzana kwesimba rematatu, uye kuvandudza kugadzirwa. index.
2. Kushandiswa kwe low voltage compensation
Mumakore achangopfuura, nekuda kwekuvandudzwa zvishoma nezvishoma kwe-low-voltage compensation technology, chirongwa chekugadzira chave chichiwedzera uye chakakwana, uye ivhu rakaderedzwa zvikuru.Vagadziri vearc furnace vakanyura vakadzidzawo nezvekuita kwayo mukuvandudza mabhenefiti ehupfumi emavira akadzika arc.Low-voltage muripo wemidziyo yakashandiswa zvakanyanya muSummerged arc furnace transformer.
Mhinduro dzekusarudza kubva:
chirongwa 1
Shandisa yakakwira-voltage sefa muripo (ichi chiitiko muripo wakajairika, asi iwo chaiwo maitiro haaenderane nedhizaini zvinodiwa).
Scenario 2
Padivi re-low-voltage, dynamic-phase-phase-fractional compensation sefa muripo unotambirwa.Mushure mekunge mudziyo wekusefa waiswa mukushanda, simba rinoshanda pamagetsi matatu-chikamu chearc furnace inofananidzwa, kuitira kuvandudza simba remagetsi, kuderedza kusaenzana kwesimba rematatu-chikamu, uye kuvandudza index yekugadzira.
Nguva yekutumira: Kubvumbi-13-2023