Diesel jenareta Seti inofananidzwa neUPS

Ichi chinyorwa chinoongorora uye chinotsanangura mabatiro eUPS yekupinza simba chinhu uye yekuisa sefa pane jenareta remagetsi kuitira kujekesa chikonzero chedambudziko, uyezve kuwana mhinduro.

1. Kubatana pakati pedhiziri jenareta set uye UPS.

Vagadziri nevashandisi veasingapindiki magetsi emagetsi masisitimu vagara vaona matambudziko ekubatanidza pakati peseti yejenareta neUPS, kunyanya maharmonics azvino anogadzirwa neanogadziridza anogadzirwa pamagetsi emagetsi masisitimu akadai semagetsi emagetsi ejenareta seti uye maseketi ekuyananisa eUPS.Migumisiro yakaipa yeizvi iri pachena zvikuru.Naizvozvo, UPS system mainjiniya akagadzira iyo yekuisa sefa ndokuiisa kuUPS, inobudirira kudzora yazvino maharmonics muUPS application.Aya mafirita anoita basa rakakosha mukuenderana kweUPS uye seti yejenareta.

Anenge ese mafirita ekuisa anoshandisa capacitor uye inductors kutora zvakanyanya kuparadza zvazvino harmonics pane iyo UPS yekuisa.Dhizaini yefirita yekuisa inofunga nezve iyo inogoneka inokwanisika yakazara harmonic kukanganisa kuri mukati meiyo UPS dunhu uye pasi pemutoro uzere.Imwe bhenefiti yeakawanda mafirita ndeye kuvandudza iyo yekupinza simba chinhu cheiyo yakarodha UPS.Nekudaro, imwe mhedzisiro yekushandiswa kwesefa yekuisa ndeyekudzikisa kugona kwese kweUPS.Masefa mazhinji anopedza 1% yeUPS simba.Dhizaini yesefa yekupinza inogara ichitsvaga chiyero pakati pezvakanaka uye zvisina kunaka zvinhu.

Kuti uvandudze kushanda kweiyo UPS system zvakanyanya sezvinobvira, mainjiniya eUPS vachangobva kuita kuvandudzwa mukushandiswa kwesimba kwesefa yekupinza.Kuvandudzwa kwekuita kwesefa kunonyanya kuenderana nekushandiswa kweiyo IGBT (Insulated Gate Transistor) tekinoroji kuUPS dhizaini.Kushanda kwakanyanya kweiyo IGBT inverter kwakatungamira kugadziridzwa kweiyo UPS.Iyo yekupinza sefa inogona kutora mamwe maharmonics azvino ichitora chikamu chidiki chesimba rinoshanda.Muchidimbu, chiyero che inductive zvinhu kune capacitive zvinhu musefa inoderedzwa, huwandu hweUPS hunoderedzwa, uye kushanda zvakanaka kunovandudzwa.Zvinhu zviri mumunda weUPS zvinoratidzika kunge zvakagadziriswa, asi kuenderana kwedambudziko idzva nejenereta kwaonekwa zvakare, kutsiva dambudziko rekare.

2. Resonance dambudziko.

Dambudziko re capacitor self-excitation rinogona kukwidziridzwa kana kuvharwa nemamwe mamiriro emagetsi, akadai seresonance series.Kana iyo ohmic kukosha kweiyo jenareta inductive reactance uye ohmic kukosha kweiyo yekuisa sefa ye capacitive reactance iri padyo kune mumwe nemumwe, uye kukosha kwekupokana kweiyo system kudiki, oscillation ichaitika, uye voltage inogona kudarika iyo yakayerwa kukosha kwesimba. system.Iyo ichangobva kugadzirwa UPS system ndeye 100% capacitive yekuisa impedance.A 500kVA UPS inogona kunge iine capacitance ye150kvar uye simba chinhu chiri pedyo ne zero.Shunt inductors, nhevedzano chokes, uye yekuisa yekuzviparadzanisa inoshandura zvinhu zvakajairwa zvikamu zveUPS, uye izvi zvikamu zvese zvinogonesa.Muchokwadi, ivo uye kugona kwesefa pamwe chete vanoita kuti UPS iite seine capacitive yakazara, uye panogona kunge patove nekumwe oscillations mukati meUPS.Yakabatanidzwa ne capacitive hunhu hwetambo dzemagetsi dzakabatana neUPS, kuomarara kwehurongwa hwese kunowedzera zvakanyanya, kupfuura chiyero chekuongorora kweakajairika mainjiniya.

3. Diesel generator set uye kutakura.

Diesel jenareta seti inotsamira pane voltage regulator kudzora kubuda kwemagetsi.Iyo voltage regulator inoona iyo-nhatu-chikamu chinobuda voltage uye inofananidza kukosha kwayo kwepakati neiyo inodiwa voltage kukosha.Iyo regulator inowana simba kubva kune ebetsero simba sosi mukati mejenareta, kazhinji kadiki jenareta coaxial ine main jenareta, uye inotumira DC simba kune iyo magineti yekukurudzira coil yejenareta rotor.Iyo coil ikozvino inokwira kana kudonha kudzora inotenderera yemagineti ye jenareta stator coil , kana saizi ye electromotive force EMF.Iyo magnetic flux ye stator coil inosarudza kubuda kwemagetsi ejenareta.

Iko kupikisa kwemukati kwe stator coil ye diesel generator set inomiririrwa neZ, kusanganisira inductive uye resistive zvikamu;iyo electromotive simba rejenareta rinodzorwa nerotor excitation coil inomiririrwa neE ne AC voltage source.Tichifunga kuti mutoro wacho unongove inductive, ikozvino I lags the voltage U ne90 ° yemagetsi chikamu chekona mune vector diagram.Kana mutoro wacho uchingopikisa, mavector eU neni tichapindirana kana kuva muchikamu.Muchokwadi, mitoro mizhinji iri pakati pekungo pikisa uye kungoita inductive.Kudonha kwemagetsi kunokonzerwa neazvino inopfuura nepa stator coil inomiririrwa nevoltage vector I × Z.Izvo chaizvo huwandu hwemaviri madiki mavheti emagetsi, kudonha kwemagetsi kudonha muchikamu neI uye inductor voltage inodonha 90 ° kumberi.Muchiitiko ichi, zvinoitika kuti iri muchikamu neU. Nokuti simba re electromotive rinofanira kuenzana nehuwandu hwekudonha kwevoltage yejenareta yekudzivirira mukati uye kubuda kwemhepo, kureva, vector sum ye vector E=U uye I×Z.Iyo voltage regulator inogona kunyatso kudzora voltage U nekuchinja E.

Iye zvino funga zvinoitika kune mamiriro emukati ejenareta kana yakanyatso capacitive mutoro unoshandiswa panzvimbo peiyo inductive mutoro.Ikozvino panguva ino inongopesana neye inductive load.Ikozvino ini ikozvino inotungamira iyo voltage vector U, uye iyo yemukati yekudzivirira voltage inodonha vector I × Z iri zvakare mune yakatarisana chikamu.Ipapo iyo vector sum yeU uye I × Z ishoma pane U.

Sezvo simba remagetsi reE electromotive E sezviri mumutoro we inductive richigadzira yakakwira jenareta yakabuda voltage U mune capacitive mutoro, voltage regulator inofanirwa kuderedza zvakanyanya kutenderera kwemagineti.Muchokwadi, iyo voltage regulator inogona kunge isina huwandu hwakakwana hwekugadzirisa zvizere kubuda kwemagetsi.Iwo ma rotor emajenareta anoramba achifara mune imwe nzira uye ane isingaperi magnetic field.Kunyangwe iyo voltage regulator yakavharwa zvizere, rotor ichiri neyakakwana magineti yekuchaja iyo capacitive mutoro uye kugadzira voltage.Chiitiko ichi chinonzi "self-excitation".Mhedzisiro ye-self-excitation ndeye overvoltage kana kudzima kwemagetsi regulator, uye jenareta yekuongorora system inofunga kuti kukundikana kwemagetsi ekugadzirisa (kureva, "kurasikirwa kwekunakidzwa").Chero yeaya mamiriro achaita kuti jenareta imire.Mutoro wakabatana nekubuda kwejenareta unogona kuzvimiririra kana kuenderana, zvichienderana nenguva uye kuseta kweiyo otomatiki switching cabinet.Mune mamwe maapplication, iyo UPS system ndiyo yekutanga mutoro wakabatanidzwa kune jenareta panguva yekutadza kwemagetsi.Mune zvimwe zviitiko, UPS uye mechanical load zvakabatanidzwa panguva imwe chete.The michina mutoro kazhinji ane kutanga contactor, uye zvinotora imwe nguva reclose pashure simba kukundikana.Pane kunonoka kuripa inductive mota mutoro weiyo UPS yekuisa sefa capacitor.Iyo UPS pachayo ine nguva inonzi "soft start", inoshandura mutoro kubva kubhatiri kuenda kune jenareta kuti uwedzere simba rayo rekuisa.Nekudaro, mafirita ekupinza eUPS haatore chikamu mune yakapfava-yekutanga maitiro.Iwo akabatana kune yekuisa yekupedzisira yeUPS sechikamu cheUPS.Naizvozvo, mune zvimwe zviitiko, iyo huru mutoro wekutanga wakabatana nekubuda kwejenareta panguva yekutadza kwemagetsi ndiyo yekuisa sefa yeUPS.Iwo ane capacitive zvakanyanya (dzimwe nguva akachena capacitive).

Mhinduro yedambudziko iri zviri pachena kushandisa simba factor kugadzirisa.Kune nzira dzakawanda dzekuita izvi, dzinenge dzinotevera:

1. Isa otomatiki switching kabati kuti mota inotakura ibatane pamberi peUPS.Mamwe makabati ekuchinja anogona kusakwanisa kuita nzira iyi.Uye zvakare, panguva yekugadzirisa, mainjiniya ezvirimwa angangoda kuparadzanisa UPS nemajenareta.

2. Wedzera kugadzirisa kwechigarire kugadzirisa kugadzirisa capacitive mutoro, kazhinji uchishandisa parallel winding reactor, yakabatana neEG kana generator output parallel board.Izvi zviri nyore kwazvo kuita, uye mutengo wakaderera.Asi zvisinei nemutoro wakakwira kana mutoro wakaderera, reactor inogara ichitora ikozvino uye ichikanganisa simba remutoro chinhu.Uye zvisinei nenhamba yeUPS, nhamba yemareactor inogara yakagadziriswa.

3. Isa inductive reactor muUPS yega yega kuti ungobhadhara capacitive reactance yeUPS.Muchiitiko chemutoro wakaderera, iyo contactor (optional) inodzora kupinza kweiyo reactor.Iyi nzira ye reactor yakanyatsojeka, asi nhamba yakakura uye mari yekuisa uye kutonga yakakwirira.

4. Isai contactor pamberi pesefa capacitor uye bvisa iyo kana mutoro wakaderera.Sezvo nguva yekubatanidza inofanira kuva yakarurama uye kutonga kwakanyanya kuoma, inogona kuiswa chete mufekitari.

Ndeipi nzira yakanakisisa inobva pamamiriro ezvinhu panzvimbo uye kushanda kwemidziyo.

Kana iwe uchida kuziva zvakawanda nezve majenareta edhiziri, unogamuchirwa kubvunza Dingbo Simba neemail dingbo@dieselgeneratortech.com, uye tichange tiri pabasa rako chero nguva.