Ishishini le-PV linelizwi elithi: I-2018 ngunyaka wokuqala wokusasazwa kombane we-photovoltaic. Esi sigwebo siqinisekisiwe kwintsimi yebhokisi ye-photovoltaic photovoltaic 2018 Nanjing isasaze ikhosi yoqeqesho lobuchwepheshe be-photovoltaic! Abafaki kunye nabasasazi kulo lonke ilizwe bahlanganisene eNanjing ukuze bafunde ngokucwangcisiweyo ulwazi lolwakhiwo lweplanti yamandla e-photovoltaic.
Njengengcali kwintsimi ye-photovoltaic inverters, i-Renac isoloko inikezelwe kwisayensi ye-photovoltaic. Kwindawo yoqeqesho yaseNanjing, uMphathi weNkonzo yezobuGcisa kaRenac wamenywa ukuba abelane ngokukhethwa kwee-inverters kunye neenkonzo ezikrelekrele. Emva kweklasi, abafundi bancedwa ukuba bahlalutye iingxaki eziqhelekileyo zezikhululo zamandla e-photovoltaic kwaye bafumana indumiso ngamxhelo mnye kubafundi.
Iingcebiso:
1. Isikrini esiguquguqukayo asiboniswa
Uhlalutyo lokusilela:
Ngaphandle kwegalelo le-DC, i-inverter LCD inikwe amandla yi-DC.
Izinto ezinokuba ngunobangela:
(1) I-voltage yecandelo ayanele, i-voltage yegalelo iphantsi kwe-voltage yokuqala, kwaye i-inverter ayisebenzi. Umbane wecandelo unxulumene nemitha yelanga.
(2) I-terminal ye-PV yokufaka ibuyiselwe umva. I-terminal ye-PV ineepali ezimbini, ezilungileyo kunye ne-negative, kwaye kufuneka zihambelane. Abakwazi ukudityaniswa umva namanye amaqela.
(3) Ukutshintsha kwe-DC akuvaliwe.
(4) Xa umtya udityaniswe ngokunxuseneyo, enye yeziqhagamshelo ayidityaniswanga.
(5) Kukho isiphaluka esifutshane kwimodyuli, ebangela ukuba kungabikho enye imitya isebenze.
Isisombululo:
Ukulinganisa i-voltage yegalelo le-DC ye-inverter kunye noluhlu lwe-voltage ye-multimeter. Xa i-voltage iqhelekile, i-voltage iyonke sisimbuku sombane wecandelo ngalinye. Ukuba akukho mbane, jonga iswitshi ye-DC, ibhloko ye-terminal, isidibanisi sentambo, kunye namacandelo ngokulandelelana kwawo; ukuba kukho amacandelo amaninzi, ufikelelo olwahlukileyo lovavanyo.
Ukuba i-inverter isetyenziselwa ixesha elithile kwaye akukho sizathu sangaphandle sifunyenwe, i-inverter hardware circuit iphosakele. Qhagamshelana nenjineli yobugcisa emva kokuthengisa.
2. I-inverter ayiqhagamshelwanga kwinethiwekhi
Uhlalutyo lokusilela:
Akukho nxibelelwano phakathi kwe-inverter kunye negridi.
Izinto ezinokuba ngunobangela:
(1) Ukutshintsha kwe-AC akuvaliwe.
(2) I-terminal ye-AC yemveliso ye-inverter ayixhunyiwe.
(3) Xa i-wiring, i-terminal ephezulu ye-terminal ye-inverter output ikhululiwe.
Isisombululo:
Ukulinganisa umthamo we-AC we-voltage ye-inverter kunye noluhlu lwe-voltage ye-multimeter. Kwiimeko eziqhelekileyo, i-terminal ephumayo kufuneka ibe ne-220V okanye i-380V yombane. Ukuba akunjalo, khangela ukuba i-terminal yokudibanisa ikhululekile, ukuba i-AC switch ivaliwe, kwaye ukuba i-switch yokukhusela ukuvuza inqanyuliwe.
3. Inverter PV Overvoltage
Uhlalutyo lokusilela:
I-alam yombane yeDC iphezulu kakhulu.
Izinto ezinokuba ngunobangela:
Inani eligqithisiweyo lamacandelo kuchungechunge libangela ukuba i-voltage igqithe umda wegalelo lombane we-inverter.
Isisombululo:
Ngenxa yeempawu zeqondo lokushisa lamacandelo, iqondo lokushisa liphantsi, liphezulu i-voltage. Uluhlu lwe-voltage yegalelo le-inverter yomtya wesigaba esisodwa yi-50-600V, kwaye uluhlu olucetywayo lwe-voltage yentambo luphakathi kwe-350-400. Uluhlu lwe-voltage yegalelo le-inverter yomtya wesigaba sesithathu ngu-200-1000V. Uluhlu lwe-post-voltage luphakathi kwe-550-700V. Kuloluhlu lwamandla ombane, ukusebenza kakuhle kwe-inverter kuphezulu. Xa i-radiation iphantsi ekuseni nangokuhlwa, inokuvelisa umbane, kodwa ayibangeli ukuba i-voltage idlule umda ophezulu we-inverter voltage, ebangela i-alamu kunye nokuyeka.
4. Impazamo yokufakelwa kwe-inverter
Uhlalutyo lokusilela:
Ukuxhatshazwa kwe-insulation ye-photovoltaic system ukuya kumhlaba kungaphantsi kwe-2 megohms.
Izinto ezinokuba ngunobangela:
Iimodyuli zelanga, iibhokisi zokuhlangana, iintambo ze-DC, ii-inverters, iintambo ze-AC, iitheminali zocingo, njl. Iitheminali ze-PV kunye nezindlu zeentambo ze-AC zikhululekile, okukhokelela ekungeneni kwamanzi.
Isisombululo:
Nqamula igridi, i-inverter, khangela ukuchasana kwecandelo ngalinye emhlabeni ngokulandelelana, fumana amanqaku eengxaki, kwaye ubeke endaweni.
5. Impazamo yegridi
Uhlalutyo lokusilela:
Umbane wegridi kunye neefrikhwensi ziphantsi kakhulu okanye ziphezulu kakhulu.
Izinto ezinokuba ngunobangela:
Kwezinye iindawo, uthungelwano lwasemaphandleni aluzange lwakhiwe kwakhona kwaye i-voltage yegridi ayikho ngaphakathi kwendawo yemimiselo yokhuseleko.
Isisombululo:
Sebenzisa i-multimeter ukulinganisa i-voltage yegridi kunye ne-frequency, ukuba iphelile ukulinda igridi ukuba ibuyele kwisiqhelo. Ukuba igridi yamandla iyinto eqhelekileyo, yi-inverter efumanisa ukungaphumeleli kwebhodi yesiphaluka. Nqamula zonke iitheminali ze-DC kunye ne-AC zomatshini kwaye uvumele i-inverter ikhuphe malunga nemizuzu emi-5. Vala unikezelo lwamandla. Ukuba inokuqaliswa kwakhona, ukuba ayinakubuyiselwa, qhagamshelana. Emva kokuthengisa injineli yobuchwephesha.