Kodi “cholakwa chodzipatula” ndi chiyani?
Mu machitidwe a photovoltaic okhala ndi transformer-less inverter, DC imasiyanitsidwa ndi nthaka. Ma module okhala ndi ma module osokonekera, mawaya osatetezedwa, zowonjezera mphamvu zopanda mphamvu, kapena cholakwika chamkati cha inverter zingayambitse DC kutayikira pansi (PE - protective earth). Cholakwa choterocho chimatchedwanso kudzipatula.
Nthawi zonse inverter ya Renac ikalowa m'njira yogwirira ntchito ndikuyamba kupanga mphamvu, kukana pakati pa nthaka ndi ma conductor omwe akunyamula pakali pano a DC kumafufuzidwa. The inverter amasonyeza kulakwitsa kudzipatula pamene detects okwana pamodzi kudzipatula kukana zosakwana 600kΩ mu single gawo inverters, kapena 1MΩ mu magawo atatu inverters.
Kodi vuto la kudzipatula limachitika bwanji?
1. M'nyengo yachinyontho, kuchuluka kwa zochitika zokhudzana ndi machitidwe omwe ali ndi vuto la kudzipatula kumawonjezeka. Kutsata cholakwa choterocho ndi kotheka panthawi yomwe chikuchitika. Nthawi zambiri pamakhala vuto lodzipatula m'mawa lomwe nthawi zina limasowa chinyezi chikatha. Nthawi zina, zimakhala zovuta kudziwa chomwe chimayambitsa vuto la kudzipatula. Komabe, nthawi zambiri imatha kuyikidwa pansi pa ntchito yoyika shoddy.
2. Ngati kutchinga pa waya kumawonongeka panthawi yoyenera, dera lalifupi likhoza kuchitika pakati pa DC ndi PE (AC). Ichi ndi chomwe timachitcha cholakwika chodzipatula. Kupatula vuto lachitetezo cha chingwe, vuto la kudzipatula likhozanso kuyambitsidwa ndi chinyezi kapena kulumikizana koyipa m'bokosi lolumikizirana ndi solar.
Uthenga wolakwika womwe umawonekera pazenera la inverter ndi "kudzipatula". Pazifukwa zachitetezo, bola ngati cholakwikacho chilipo, inverter sidzatembenuza mphamvu iliyonse chifukwa pakhoza kukhala pachiwopsezo cha moyo pazigawo zoyendetsera dongosolo.
Malingana ngati pali mgwirizano umodzi wokha wamagetsi pakati pa DC ndi PE, palibe ngozi yomweyo chifukwa dongosololi silinatsekeke ndipo palibe mphamvu yodutsamo. Komabe, samalani nthawi zonse chifukwa pali zowopsa:
1. Yachiwiri yachidule yopita kudziko lapansi yachitika PE (2) ikupanga njira yachidule kudzera mu modules ndi wiring. Izi zidzawonjezera chiopsezo cha moto.
2. Kukhudza ma modules kungayambitse kuvulala kwakukulu kwa thupi.
2. Matenda
Kutsata vuto lodzipatula
1. Zimitsani kulumikizana kwa AC.
2. Yezerani ndikulemba voteji yotseguka ya zingwe zonse.
3. Chotsani PE (AC lapansi) ndi nthaka iliyonse kuchokera ku inverter. Siyani DC yolumikizidwa.
- Kuwala kwa LED kofiira kuwonetsa cholakwika
- Uthenga wolakwika wodzipatula suwonetsedwanso chifukwa chosinthira sichingawerengenso pakati pa DC ndi AC.
4. Lumikizani mawaya onse a DC koma sungani DC+ ndi DC- ku chingwe chilichonse.
5. Gwiritsani ntchito voltmeter ya DC kuti muyese mphamvu yamagetsi pakati pa (AC) PE ndi DC (+) ndi pakati pa (AC) PE ndi DC - ndipo lembani ma voltages onse awiri.
6. Mudzawona kuti kuwerengera kumodzi kapena kuposerapo sikukuwonetsa 0 Volt (Choyamba, kuwerenga kukuwonetsa magetsi otseguka, kenako amatsikira ku 0); zingwe izi zili ndi vuto lodzipatula. Ma voltages omwe amayezedwa amathandizira kutsata vutoli.
Mwachitsanzo:
Chingwe chokhala ndi ma solar 9 Uoc = 300 V
PE ndi +DC (V1) = 200V (= ma module 1, 2, 3, 4, 5, 6,)
PE ndi -DC (V2) = 100V (= zigawo 7, 8, 9,)
Cholakwika ichi chidzakhala pakati pa module 6 ndi 7.
CHENJEZO!
Kukhudza mbali zosatsekedwa za chingwe kapena chimango zimatha kuvulaza kwambiri. Gwiritsani ntchito zida zoyenera zotetezera ndi zida zoyezera zotetezeka
7. ngati zingwe zonse zoyezera zili bwino, ndipo inverter imachitikabe cholakwika "kudzipatula", vuto la inverter hardware. Imbani thandizo laukadaulo kuti muthe kusintha.
3. Mapeto
"Kudzipatula" nthawi zambiri ndi vuto kumbali ya solar panel (vuto la inverter ochepa chabe), makamaka chifukwa cha nyengo yachinyezi, zovuta zolumikizira ma solar, madzi mubokosi lolumikizirana, ma solar panel kapena zingwe kukalamba.