Otu esi arụnye Mgbochi Mgbochi (Zero-Export) Meta Ike na Sistemụ PV - Ntuziaka zuru oke

Okwu mmalite

Ka nkuchi fotovoltaic (PV) na-eme ngwa ngwa, ọtụtụ ọrụ na-eche ihuihe efu-ebupu chọrọ. Ụlọ ọrụ na-amachibidokarị ike anyanwụ ịfeghachi azụ na grid, ọkachasị n'ebe nwere ihe ngbanwe juru, nweghi ikike njikọ grid, ma ọ bụ iwu ike siri ike. Ntuziaka a na-akọwa otu esi etinye yamgbochi-reverse (efu-mbupu) mita ike, isi ihe ngwọta dị, na nhazi ziri ezi maka nha usoro PV dị iche iche na ngwa.

1. Isi echiche tupu echichi

Ihe ngosi amanyere iwu maka mbupụ efu

• Ntughari saturation: Mgbe ngbanwe mpaghara na-arụ ọrụ n'ogo dị elu, ike mgbagha nwere ike ịkpata ibufe ibu, ọnyà, ma ọ bụ ọdịda akụrụngwa.

• Naanị iri onwe (ọ nweghị mbupu grid anabatara): Ọrụ ndị na-enweghị nkwado grid ga-eri ike niile emepụtara na mpaghara.

• Nchekwa mma ike: Mgbanwe ike nwere ike iwebata ihe ndị DC, harmonics, ma ọ bụ ibu na-ezighi ezi, na-eweda ogo grid.

Ndepụta ntinye tupu etinyere

• Ndakọrịta ngwaọrụ: Gbaa mbọ hụ na ike nke mita ahụ dabara nha sistemụ PV (otu nkeji ≤8kW, nkeji atọ> 8kW). Lelee nkwukọrịta inverter (RS485 ma ọ bụ ihe dakọtara).

• gburugburu: Maka nrụnye n'èzí, kwadebe ihe mkpuchi ihu igwe. Maka sistemụ inverter ọtụtụ, hazie maka wiwi ụgbọ ala RS485 ma ọ bụ ihe ntinye data Ethernet.

• Nrube isi na nchekwa: Kwado ebe njikọ grid na akụrụngwa, wee lelee na oke ibu ahụ dabara na ọgbọ PV a tụrụ anya ya.

2. Isi ihe ngwọta efu-ebupụ

Ngwọta 1: Mmachi ike site na njikwa inverter

• Ụkpụrụ: Mita smart na-atụ ntụzịaka dị ugbu a. Mgbe achọpụtara ntụgharị ntụgharị, mita ahụ na-ekwurịta okwu site na RS485 (ma ọ bụ protocol ndị ọzọ) na inverter, nke na-ebelata ike mmepụta ya ruo mgbe mbupụ = 0.

• Jiri ikpe: Ebe ndị na-agbanwe agbanwe-ejuju afọ, ọrụ ndị na-eri onwe ha nwere ibu kwụsiri ike.

• Uru: Mfe, ọnụ ala, nzaghachi ngwa ngwa, ọ dịghị mkpa maka nchekwa.

Ngwọta 2: Ibu Ibu ma ọ bụ Nkwakọba Nchekwa Ike

• Ụkpụrụ: Mita na-enyocha ugbu a na ebe njikọ grid. Kama ịmachi mmepụta inverter, a na-atụgharị ike ngafe na sistemu nchekwa ma ọ bụ kwafuo ibu (dịka ọmụmaatụ, igwe ọkụ, akụrụngwa nrụpụta).

• Jiri ikpe: Ọrụ ndị nwere ibu na-agbanwe nke ukwuu, ma ọ bụ ebe ị na-ebuli ọgbọ PV dị mkpa.

• Uru: Inverters na-anọ na MPPT mode, ike adịghị emefusị, elu usoro ROI.

3. Nrụnye Nrụnye site na Size Size

Sistemụ Inverter Otu (≤100 kW)

• Nhazi: 1 inverter + 1 bidirectional smart mita.

• Ọnọdụ mita: N'etiti inverter AC mmepụta na isi ihe nkwụsịtụ. Enweghị ibu ndị ọzọ ekwesịrị ijikọ n'etiti.

• Usoro waya: PV inverter → Ndị ntụgharị dị ugbu a (ma ọ bụrụ na ejiri ya) → Smart powermeter → Main breaker → Ibu mpaghara / Grid.

• Ezi uche: Mita na-atụ ntụziaka na ike, mgbe ahụ, inverter na-edozi mmepụta ka ọ dakọtara na ibu.

• Uru: Wiring dị mfe, ọnụ ala dị ala, nzaghachi ngwa ngwa.

Multi-inverter Sistemu (> 100 kW)

• Nhazi: otutu inverters + 1 smart ike mita + 1 data concentrator.

• Ọnọdụ mita: N'ebe njikọ grid nkịtị (mpụta niile inverter jikọtara).

• Wiring: Mpụta ihe ntụgharị → Busbar → mita bidirectional → data concentrator → Main breaker → Grid/Loads.

• Ezi uche: Onye na-ahụ maka data na-anakọta data mita ma kesaa iwu nye onye ntụgharị ọ bụla nke ọma.

• Uru: Scalable, centralized akara, mgbanwe oke ntọala.

4. Nwụnye na ụdị ọrụ dị iche iche

Naanị ihe eji eme onwe ya

• Ihe achọrọ: Enweghị mbupu grid ekwe.

• Ọnọdụ mita: N'etiti inverter AC mmepụta na mpaghara ibu emebi. Enweghị mgba ọkụ njikọ grid eji.

• Lelee: Nyochaa n'okpuru ọgbọ zuru oke na-enweghị ibu - inverter kwesịrị ibelata ike na efu.

Ọrụ ngbanwe nke saturation

• Ihe achọrọ: Ekwenyere njikọ grid, mana amachibidoro ike tụgharịa.

• Ọnọdụ mita: N'etiti mmepụta inverter na njikọ grid.

• Ezi uche: Ọ bụrụ na achọpụtara ike ntụgharị, mmepụta oke inverter; dị ka nkwado ndabere na mpaghara, ndị na-agbaji nwere ike ịpụpụ iji zere nrụgide mgbanwe.

Omenala iji onwe ya + Ọrụ mbupụ grid

• Ihe achọrọ: Enwere ikike mbupu, mana oke.

• Ntọala mita: Mita mgbochi mgbagha arụnyere n'usoro yana mita ịgba ụgwọ bidirectional nke ụlọ ọrụ ahụ.

• Ezi uche: Igwe ihe mgbochi na-egbochi mbupụ; naanị ma ọ bụrụ na ọdịda dara ka mita ọrụ ahụ na-edekọ ntinye.

5. Ajụjụ

Q1: mita ahụ n'onwe ya ọ na-akwụsị ntụgharị?
Mba. Mita na-atụ ntụzịaka ike wee gosi ya. Onye ntụgharị ma ọ bụ onye njikwa na-eme ihe ahụ.

Q2: Kedu ngwa ngwa sistemụ nwere ike ime?
Ọ na-adịkarị n'ime 1-2 sekọnd, dabere na ọsọ nzikọrịta ozi yana firmware inverter.

Q3: Kedu ihe na-eme n'oge ọdịda netwọk?
Nkwurịta okwu mpaghara (RS485 ma ọ bụ njikwa kpọmkwem) na-eme ka nchebe na-aga n'ihu ọbụna na-enweghị ịntanetị.

Q4: mita ndị a nwere ike ịrụ ọrụ na sistemu nkewa (120/240V)?
Ee, ụfọdụ ụdị ka emebere iji jikwaa nhazi usoro nkewa nke ejiri na North America.

Mmechi

Nrube isi mbupụ efu na-aghọ iwu n'ọtụtụ ọrụ PV. Site na ịwụnye mita ike mgbagha mgbagha na ebe ziri ezi yana ijikọ ha na inverters, ibu kwafuo ma ọ bụ nchekwa,EPCs, ndị ọrụ ngo na ndị mmepenwere ike ịnapụta usoro mbara igwe nke a pụrụ ịdabere na ya, nke na-akwado ụkpụrụ. Ihe ngwọta ndị a abụghị naanịchebe okporomana ọzọkwabulie onwe-eri na ROImaka ndị ọrụ njedebe.