In photovoltaic power generation systems, inverters play a crucial role in converting the direct current generated by photovoltaic modules into alternating current to meet the electricity needs of households, businesses, or the power grid. Txawm li cas los xij, Invererers yuav ntsib ntau qhov kev ua txhaum thaum lub sijhawm ua haujlwm. Cov hauv qab no yog kev tsom xam cov teeb meem ntawm peb yam teeb meem uas muaj inverters, tsom rau muab cov kev pabcuam tswv yim rau cov photovoltaic thiab cov neeg ua haujlwm txij nkawm.
1 kev tawm suab tsis txawv txav voltage
1. Txhaum Kev Txhaum:Lub inverter tsis tuaj yeem pib ib txwm los yog maj mam nres ua haujlwm thaum lub sijhawm ua txhaum cai lossis tsis muaj zog voltage, uas cuam tshuam rau lub zog qub hluav taws xob tiam ntawm lub photovoltaic lub hwj chim loj tiam.
2. Muaj Ntau Yam:
Cov teeb meem photovoltaic module:Tus qauv kuj yuav siv tau los ntawm cov av ntxoo, ua kom muaj plua plav ntau dhau ntawm cov npoo av, lossis tau ua kom tsis ruaj khov sab hauv, ua rau tsis ruaj khov los yog hauv qab ib txwm tawm cov zis hluav taws xob. Tsis tas li ntawd, xoob lossis tsis zoo sib txuas rau cov thawv ntawm cov khoom siv tuaj yeem cuam tshuam cov khoom hluav taws xob tawm.
Kev sib txuas kab txhaum:Lub DC cable nruab nrab ntawm cov khoom lag luam thiab cov inverter yuav raug puas, lub voj voos luv, qhib kev sib cuag, lossis muaj kev sib cuag tsis zoo los ua qhov tshwm sim los yog txo qis.
Daim phiaj voltage hloov:Muaj kev nce siab los yog txo qis hauv grid voltage dhau qhov kev tso cai voltage ntau ntawm inverter kuj tseem ua rau tus txhaum no.
3. Kev daws:
Khij photovoltaic modules:Nquag ntxuav cov hmoov av thiab cov khib nyiab nyob rau saum npoo ntawm cov modules kom ntseeg tau tias tsis muaj duab ntxoo lossis obstructions. Siv cov khoom siv kws tshuaj ntsuam kws tshuaj ntsuam xyuas, xws li IV nkhaus tester ntsuas, txhawm rau tshawb xyuas cov zis cov yam ntxwv ntawm cov khoom siv. Yog tias muaj cov khoom siv tsis zoo, hloov lawv nyob rau lub sijhawm. Nyob rau tib lub sijhawm, ua kom nruj qhov kev sib txuas cov chaw sib txuas hauv cov thawv sib tshuam sib txuas kom paub meej tias kev sib txuas tau zoo.
Khij cov kab sib txuas:Ua tib zoo tshawb xyuas cov tsos ntawm DC cable kom pom tias muaj ib qho cim ntawm kev puas tsuaj lossis kev laus. Rau txoj kev sib txuas cov ntsiab lus sib txuas, zawm lawv dua; Rau cov voj voog luv luv los yog cov voj voos tawg, kho lossis hloov cov cables ua raws sijhawm.
Kev Ntsuam Xyuas Daim Phiaj Voltage:Nruab daim phiaj volt soj ntsuam cov khoom siv kom paub txog kev nkag siab hloov hauv grid voltage. Yog tias muaj kev hloov pauv nquag los yog txawv txav hauv lub zog voltage tau pom, sib txuas lus nrog lub chaw haujlwm fais fab hauv nroog kom mus nrhiav kev daws teeb meem.
2 Qhov txawv txav Volfage lossis ntau zaus
1. Txhaum Kev Txhaum:Lub AC Voltage tso tawm los ntawm inverter yog siab dhau los yog qis dua cov khoom siv hluav taws xob tsis ruaj khov, thiab tseem ceeb tshaj plaws cov khoom siv tau, thiab tseem yuav cuam tshuam cov khoom siv hluav taws xob, thiab tseem yuav cuam tshuam cov khoom siv ruaj khov, thiab tseem yuav cuam tshuam rau qhov ruaj khov ntawm lub hwj chim ntawm lub hwj chim.
2. Muaj Ntau Yam:
Sab hauv Circuit Txwv tsis ua haujlwm ntawm Inverter:Cheebtsam hluav taws xob hauv kev tswj hwm lub capuital, xws li capacitors, neeg tsim khoom, thiab lwm yam, yuav muaj kev puas tsuaj, cuam tshuam, cuam tshuam rau kev tswj hwm cov zis ntawm cov zis tawm thiab ntau zaus los ntawm cov inverter.
Thauj cov kev hloov pauv lossis mismatch:When the load connected to the inverter suddenly changes significantly, such as a large number of loads starting or stopping at the same time, or the power factor of the load is too low or the harmonic content is too high, exceeding the regulation capacity of the inverter, it will lead to abnormal output voltage and frequency.
3. Kev daws:
Khij cov kev tswj hwm sab hauv ntawm cov inverter:Qhib lub inverter casing (hauv qab kev taw qhia ntawm tus kws tshaj lij kom muaj kev nyab xeeb thiab cov neeg muaj ntau yam los kuaj cov khoom tseem ceeb hauv kev tswj hwm. Rau cov khoom siv uas tsis zoo tau pom, hloov lawv raws li thawj tus qauv thiab cov lus qhia tshwj xeeb, thiab ua tib zoo tshuaj xyuas cov pob qij txha solder rau cov kev sib tw sib txawv.
Txhim kho Load Configuration:Cia li npaj nkag mus thiab siv cov thauj khoom kom tsis txhob muaj ib txhij pib lossis nres ntau ntawm cov khoom siv hluav taws xob ntau. Rau inductive thauj khoom nrog lub zog tsis tshua muaj zog, txhim kho cov hluav taws xob cuam tshuam cov nyiaj no xws li Capacitor cov nyiaj them tuaj yeem raug txiav txim siab txhim kho lub zog ntawm lub nra; Rau cov tsis muaj zog nrog cov ntsiab lus hangonic ham muaj teeb meem tuaj yeem ntsia tau rau sab xub ntiag ntawm lub thauj mus los txo cov kev sib haum xeeb ntawm cov inverter tso zis.
3 cov rwb thaiv tsev qis los yog qaug cawv tam sim no txhaum
1. Txhaum Kev Txhaum:Cov inverter qhia txog lub tswb nrov qhia cov rwb thaiv tsev qis, lossis thaum lub sij hawm ntsuas hluav taws xob, xau tam sim no muaj nyob hauv inverter. Qhov no tsis yog cuam tshuam rau kev ua haujlwm ib txwm ntawm cov inverter, tab sis kuj tseem yuav ua kev hem thawj rau kev nyab xeeb ntawm tus kheej.
2. Muaj Ntau Yam:
DC Cable kev puas tsuaj:Thaum siv sijhawm ntev, DC CABLE yuav raug rau sab nraud txheej thiab txo cov rwb thaiv tsev txheej, uas tuaj yeem ua kev puas tsuaj rau kev ua kom zoo nkauj thiab cov roj ntsha, hauv av, ua rau to taub qab ntxig tam sim no.
Kev tsis zoo glounding ntawm cov khoom:Xoob lossis corroded hlau thav duab sib txuas ntawm photovoltic cov khoom, lossis ua rau muaj qhov sib txawv ntawm cov khoom sib txawv thiab hauv av, ua rau muaj kev xau tam sim no. Tsis tas li ntawd, cov khoom sib dhos teeb tsa tsis yooj yim txuas nrog cov chaw hauv av, uas tseem tuaj yeem ua rau qhov chaw tsis zoo.
Kev teeb tsa ib puag ncig yog noo:Lub inverter yog teeb tsa nyob rau hauv ib puag ncig noo nplua nuj, uas noo noo tuaj yeem nkag mus rau sab hauv lossis cov khoom siv rwb thaiv tsev, ua rau cov rwb thaiv tsev uas cuam tshuam thiab xau dej tam sim no.
3. Kev daws:
Xyuas lub DC cable:Raws cov kev taw qhia ntawm DC cable, ua tib zoo tshuaj xyuas cov tsos ntawm cov kev puas tsuaj, khawb, kev laus, kev sib tw yuav siv tau los qhwv thiab kho lawv; Rau cov cable puas hnyav, cov cables tshiab yuav tsum tau hloov nyob rau hauv lub sijhawm. Nyob rau tib lub sijhawm, tsis tu ncua siv lub rwb thaiv tsev tiv thaiv kom ntsuas lub rwb thaiv tsev tsis kam ntawm DC cable kom ntseeg tau tias lawv ua tau raws li lawv tau raws li cov cai.
Xyuas kom tau zoo grounding ntawm cov khoom:Txheeb xyuas qhov chaw sib txuas ntawm cov khoom sib txuas ntawm cov cheebtsam yog khov kho, thiab seb cov hlau hauv av tawg, corroded, lossis tsis. Siv cov hauv av tiv thaiv kev ntsuas ntsuas qhov av tiv thaiv ntawm cov khoom sib xyaw, uas feem ntau yuav tsum muaj qhov av tsis muaj 4 ohms. Yog tias qhov av tiv thaiv yog ntau dhau, cov xov tooj ntawm cov av uas tsis muaj zog, los yog cov khoom siv hauv av tuaj yeem hloov pauv qhov av tiv thaiv.
Ua kom txhim kho ib puag ncig:Nruab qhov inverter nyob rau hauv ib qho chaw qhuav thiab zoo ventilated qhov chaw, zam kev ua si ncaj qha thiab dej nag. Rau cov inverters tau nruab rau hauv cov huab cua noo, pov thawj-pov thawj kev ntsuas tuaj yeem coj, xws li txhim kho lawv hauv cov dej tsis huv thiab tso cov deformcants hauv cov txee. Nquag ntxuav cov inverters thiab cables kom cov cuab yeej qhuav.
4 TAWG
Hauv cov ntsiab lus xaus, hauv kev ua haujlwm tiag tiag thiab kev ua haujlwm ntawm cov kws ua txhaum cai, kev ua haujlwm ntawm kev ua txhaum kev ua txhaum, thiab txiav txim siab raug mob, thiab coj cov kev daws teeb meem.