Stori
Ogas 22, 2017
Taim grid i stap i pundaun long 99% i go long 60%, wanpela bateri i no inap stap moa na i stat long ron long olgeta de. Ol bateri we i stap long UPS i save bagarap insait long 18-pela mun long olgeta hap bilong Nigeria, Saut Afrika, Gana na Tansania — hevi em i 'duty assumption', i no long prodak. Dispela atikol i skelim dip bilong 'discharge' wantaim 'cycle life' na i givim wanpela 'capacity factor table' long 'grid' we i stap.
Wanpela Bateri, Tupela Difren Wok Tru
Ol komesal distrik bilong Lagos, ol provins long Saut Afrika long taim bilong lod seding, Ghana long taim bilong 'dumsor' lod menesmen bilong en, ol taun klostu long Tanzania na Uganda, na ol taun long wes Kenya olgeta i bungim wankain grid rilitis: pawa i no save bagarap wan wan taim, em i save bagarap planti taim long wanpela de inap long sampela aua long wanpela taim. Dispela i luk olsem wanpela askim bilong 'frequency', tasol em i senisim olgeta 'operating mode' bilong bateri. Sapos 99% bilong bateri i stap, bateri i save 'discharge' liklik long 10-pela taim long wanpela yia na i save stap long flot; laip i stap aninit long grid korosen na wanpela 12-pela yia disain laip em i 12-pela yia tru. Sapos i gat 60%, bateri i save pinisim wanpela o tupela ful saikel long olgeta de — moa long 500 long wanpela yia — na laip bilong en i stap aninit long namba bilong saikel. Wankain prodak inap long senis long sevis laip bilong em moa long faivpela taim namel long tupela wok. Tasol ol 'procurement specifications' i save tok tasol olsem 'foapela aua bilong bek-ap' na i no gat tok long ol 'cycles', na dispela 'omission' em i as tru na ol bateri i save dai long 18-pela mun.
Kwantitativ Rilesens namel long DOD na Laip
Ifekt bilong dip bilong discharge long laip bilong saikel em i strongpela non-linear, na i no samting bilong yusim liklik long stap longpela taim tasol. Long konvensenel AGM, 30% DOD i ken givim samting olsem 1,200 saikel, 50% samting olsem 600, 80% samting olsem 300 tasol, na 100% liklik long 200. Long narapela tok, sapos yu apim DOD long 50% i go long 80% dispela i save apim eneji long wan wan 'discharge' long 60% tasol i save daunim namba bilong olgeta saikel, olsem na olgeta taim bilong eneji long laip taim — i pundaun tru. Dispela 'curve' i tok klia long wanem as na 'yusim moa' em i wanpela giaman samting: em i save baim ol nupela samting hariap. Stretpela rot em long painim DOD we i save mekim 'lifetime throughput' i kamap bikpela, planti taim namel long 50% na 70%, aninit long wanpela bikpela samting: taim bilong 'recharge' bihain long 'deep discharge'. Sapos grid i stap sampela aua tasol long wanpela de, 80% 'discharge' i nidim moa long 10-pela aua long ful 'recharge', long neks de ating em i no inap pinisim, na bateri i save stap 'chronically undercharge' wantaim 'accelerating sulphation' - we em i as tru bilong kilim man.
Bilong wanem 'Foapela aua bilong bek-ap' i no wok gut long Afrika
Fopela aua bilong bek-ap em i wanpela namba bilong kapasiti, i no wanpela namba bilong laip, na em i feil long wik-grid wok long tripela rot. Namba wan, ol i no tingim olgeta 'cycle count': foapela aua bilong bek-ap i makim olsem 50% i go inap 60% DOD, olsem na long wanpela 'cycle' long wanpela de na 365 long wanpela yia, wanpela konvensenel AGM we i gat 600 'cycles' i pinis insait long 20 mun - klostu wankain olsem 18-pela mun we yumi lukim long fil. Namba tu, windo bilong sasim i no inap: wanpela string we i gat sais bilong 4-pela aua bilong lod i save sasim long 0.1C tasol, olsem na long 50% i go long 100% i save kisim moa long 10-pela aua, taim grid i stap 4-pela i go inap 6-pela aua tasol long wanpela de; bateri i no save kisim ful 'charge' na i save stap oltaim insait long PSoC. Namba tri, hat i save mekim em i kamap bikpela moa: planti hap bilong Afrika i save ran long 35°C i go inap 45°C, na laip bilong saikel i save go daun gen long ol dispela tempereja. Putim tripela wantaim na yu kisim 18 mun. Olsem na wanpela spesifikasen i mas tokaut long tripela samting wantaim: namba bilong ol 'target cycle count', 'charging window' we i stap, na 'site ambient temperature'.
Ol samting bilong kapasiti long grid i stap
Hia em i wanpela tebol yu ken yusim stret. As tingting em olsem, kapasiti i mas bihainim 'dely energy deficit', na i no long 'backup' aua. Antap long 95% i stap, wok i stap long 'float standby': sais i go long longpela taim bilong 'outage' taim lod, holim DOD insait long 50%, na standet fran-terminal seris i inap. Namel long 80% na 95%, wantaim samting olsem wanpela tu-i go inap foapela aua pawa long wanpela de, putim wanpela 'cycling factor' bilong 1.2 antap long ol bek-ap aua na laikim wanpela 'deep-cycle series' (FTC, 100-170Ah, i gat mak bilong 1,500 'cycles' o moa). Namel long 50% na 80%, bateri em i nambawan samting bilong mekim wok long olgeta de: putim wanpela 'factor' bilong 1.5 i go inap 1.8 na muvim i go long 'lead-carbon' (LLC, 300-1,000Ah, foapela i go inap long faivpela taim bilong saikel laip insait long PSoC) o LiFePO4 (SDA10, 'continuous discharge'). Aninit long 50%, dispela sait i no stap long grid: sais bilong wanpela ful saikel long wanpela de na tripela de bilong otonomi long taim bilong klaut, we i min olsem yu mas go stret long wanpela sola haibrid disain — putim bateri tasol i no ekonomik.
Wanpela Seleksen Disisen Diwai
Sotim wok painimaut i go long 4-pela step we wanpela 'site engineer' i ken bihainim. Step wan, grid i stap: antap long 95%, kisim standet 12V fran-terminal seris (6-FMX, 50-200Ah, 12-yia disain laip) long liklik pe tru; 80% i go inap 95%, kisim dip-saiklon (FTC) o gel (6-XFMJ, fiftin-yia disain laip, inap long karim hat wantaim liklik wara lus); 50% i go long 80%, kisim 'lead-carbon' (LLC, twenti-yia disain laip, 30% gutpela 'charge acceptance' olsem na ol i yusim liklik 'charging window' tasol); aninit long 50%, muv i go long sola haibrid na sais bilong bateri bilong ron long baiskol long olgeta de. Step tu, 'charging window': we grid i stap aninit long 6-pela aua long wanpela de, 'charge acceptance' i winim, na 'lead-carbon' o 'lithium' i winim konvensenel AGM. Step namba tri, temperaja bilong ples: antap long 45°C oltaim, laikim 'lead-carbon' o wanpela 'high-temperature series'; we ol i bosim tempereja, ol i ken yusim 'lithium's volume advantage'. Step namba foa, laip i stap yet: wanpela sait we i gat aninit long faivpela yia bilong lis i stap yet i no nidim wanpela teknoloji bilong 20 yia — kisim opsen we i no gat bikpela pe bilong en long taim i stap yet. Bihain long 4-pela step i no gat planti spes bilong tok pait.
Faivpela samting we i mas kamap insait long spesifikesen
Long 'weak-grid duty' spesifikasen i mas tokaut long wok, i no kapasiti tasol. Faivpela samting em i samting yu mas mekim, na sapos yu lusim wanpela samting bai yu go bek long 18-pela mun feil saikel. Namba wan, grid i stap olsem wanpela pesen, wantaim taim bilong ripot i stap — long olgeta mun o long olgeta yia, long wanem, tupela i save kamapim ol narapela narapela namba — na dispela samting tasol i save makim sapos bateri i save flot o i save raun. Namba tu, longpela taim bilong wanpela 'outage' na averej bilong 'outage' long wan wan de, ol i tok seperet: namba wan i makim kapasiti, namba tu i makim 'cycle life', na planti spesifikasen i kisim namba wan tasol. Namba tri, i gat 'charging window' long wanwan de, we i makim 'charging acceptance' rikwaemen; aninit long 6-pela aua, 'fast-charging' teknoloji em i samting yu mas mekim o bateri i no inap long kisim ful 'charge'. Namba foa, mak bilong tempereja long sait, ol i kolim olsem insait bilong kebinet na i no ausait, wantaim taim bilong san, bikos ol kebinet insait i save ran moa long 10°C antap long ambient. Namba faiv, mak bilong sevis laip na lis bilong sait i stap yet, olsem na wanpela sait we i gat tripela yia bilong lis i stap yet i no gat wanpela twenti yia bateri — dispela i no gutpela tingting, em i westim. Wantaim dispela faivpela toksave, ol bidder i no inap hait moa bihain long wanpela sentens tasol inap long 4-pela aua bilong bek-ap, na skelim i gat wankain as. Planti projek i save feil bikos ol i no makim rong prodak tasol bikos ol i no bin tokaut long pe bilong en, olsem na ol saplaia i save kolim ol samting we i no gutpela taim ol opereta i ranim sait aninit long gutpela tingting. View Telecom Backup Power Selection
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9-pela series bilong 60-pela model: 12V fran terminal (6-FMX 50-200Ah, 12-pela yia), hai tempereja taip (6-FMXH, 55°C dabol flot laip), gel (6-XFMJ, 15 yia), dip saikel (FTC, ≥1,500 taims), 2V pawa stesin series (MGFDGF/GFD 200–3,000Ah, 15 yia), bikpela mak (GFMHR 500W–2,700W @15min), lid kabon (LLC 300–1,000Ah, 20 yia, PSoC saikel 4–5x), 48V LiFePO4 (SDA10 50–2000Ah, last 11 h). Dispela gutpela BMS i sapotim SOC/SOH monitoring na foapela kain proteksen, na ol opsenel drai kontek i ken konektim long monitoring bilong envairomen we i stap pinis.
Lainim long 'base station backup power selection' na 'quotetion' →