A Power Conversion System (PCS)ndi chipangizo chamagetsi chamagetsi chopangira mphamvu zambiri-makina osungira mphamvu ya batire. Imathandizira kutembenuka kwamitundu yamagetsi amagetsi ndikuyenda kwamphamvu kwapawiri, kumathandizira ma voltages a DC mpaka 1500V. PCS imagwiritsidwa ntchito kwambiri m'makina osungira mphamvu komanso kupanga mphamvu zamagetsi zongowonjezwdwa.
Ili pakati pabatire yosungirako mphamvundi gridi yamagetsi, ndilo gawo lalikulu lomwe limapangitsa kuti mphamvu zamagetsi ziziyenda pawiri pakati pa makina osungira mphamvu ndi gridi yamagetsi. Amagwiritsidwa ntchito poyang'anira batri kuti atembenuzire bwino AC / DC panthawi yolipiritsa / kutulutsa ndipo imagwira ntchito zazikuluzikulu za kutembenuka kwa mphamvu zamagetsi zapawiri ndi kuwongolera dongosolo.
Momwe PCS imagwirira ntchito
Mfundo yayikulu yogwirira ntchito ya PCS ndikukwaniritsa kuyenda kwa bidirectional ndikusinthira mphamvu yamagetsi: pakati pa mbali za AC ndi DC, kudzera pakusintha kwa zida zamagetsi zamagetsi, mphamvu ya AC kuchokera pagululi imakonzedwanso kukhala mphamvu ya DC kuti ipereke batire; kapena mphamvu ya DC yochokera mu batire imalowetsedwa mu mphamvu ya AC kuti ibwerere ku gridi. Njirayi imayendetsedwa mwamphamvu ndi makina owunikira a microgrid, omwe amatha kulamulira mphamvu zonse (PQ) kapena nthawi zonse (CC) kuti azitha kuyendetsa bwino mphamvu ya batire ndikuyitanitsa ndikutulutsa (monga kumeta nsonga ndi kudzaza m'chigwa), ndipo nthawi yomweyo kusalaza kusinthasintha kwamphamvu kwa magwero amagetsi osinthasintha monga mphamvu yamphepo ndi photovol.
Pakugwiritsa ntchito gridi yamagetsi, Power Control System (PCS) imagwira ntchito zingapo zofunika:
1. Kusunga ma gridi okhazikika: Kupereka mphamvu zosunga zobwezeretsera pa nthawi ya kusakhazikika kwa gridi, kuonetsetsa chitetezo cha batri kudzera mukulankhulana ndi Battery Management System (BMS), komanso kupatsa -masiteshoni akuluakulu osungira mphamvu zamagetsi kuti athe kukwaniritsa malamulo osinthika amagetsi komanso kupititsa patsogolo chuma pogwiritsa ntchito PCS.
2. Kuwonetsetsa kuti mabatire ali otetezeka: Kugwira ntchito limodzi ndi BMS, kuonetsetsa kuti mabatire akugwira ntchito mopanda malire komanso kupewa zoopsa monga kuthira mochulukira komanso{1}}kuthamangitsidwa.
3. Kupititsa patsogolo kusinthasintha kwa dongosolo ndi chuma: Makamaka m'malo akuluakulu-pamalo akuluakulu osungira mphamvu zamagetsi, PCS ndiyofunikira kwambiri pakukwaniritsa malamulo osinthika amagetsi (monga kumeta kwambiri ndi kudzaza zigwa, kuwongolera pafupipafupi) komanso kukonza bwino chuma.
Zofunikira zazikulu ndi ntchito za PCS
PCS (Power Control System) imakhala ndi zida monga IGBTs (Insulated Gate Bipolar Transistors), PCBs (Printed Circuit Boards), ndi mawaya ndi zingwe. Zofunikira zake ndi ntchito zake ndi izi:
Bidirectional Energy Conversion:PCS imatha kusintha mphamvu yachindunji (DC) kukhala alternating current (AC) ndi mosemphanitsa, kupangitsa kuti mphamvu ya bidirectional ikuyenda pakati pa gridi, mabatire, ndi katundu. Mwachitsanzo, mu makina osungira mphamvu, imatha kusintha grid AC kukhala DC kuti izitcha batire nthawi yomwe ilibe -nthawi yogwira ntchito kwambiri, ndikusintha batire ya DC kukhala AC kuti ibwerere ku gridi kapena kupereka katundu wapafupi panthawi yomwe ikugwira ntchito kwambiri.
Kuwongolera Mphamvu Molondola:Kupyolera mu ma aligorivimu otsogola, PCS imatha kusintha kukula ndi mayendedwe a kulipiritsa ndi kutulutsa mphamvu mu nthawi yeniyeni, kuyankha ndendende malamulo otumizira ma gridi kapena ma siginecha ochokera ku Battery Management System (BMS), kuwonetsetsa kuti mphamvu ndi kukhazikika kwa kutembenuka kwamphamvu. Mwachitsanzo, imatha kusintha kuyitanitsa ndi kutulutsa mphamvu, magetsi, ndi ma frequency kutengera kusintha kwa gridi kapena batire.
Kukhathamiritsa Kwamphamvu kwa Mphamvu:PCS ili ndi kuponderezedwa kwa ma harmonic ndi ntchito zolipirira mphamvu zokhazikika, zomwe zimatha kupititsa patsogolo mphamvu yamagetsi ndikuchepetsa kusokoneza kwa gridi. Muzochitika zatsopano zopangira mphamvu zamagetsi, zimathanso kuwongolera kusinthasintha kwamphamvu kwamphamvu kwapakatikati monga ma photovoltaics ndi mphamvu yamphepo, kupangitsa kuti njira yopangira magetsi ikhale yokhazikika ndikuwongolera luso la gululi kuti livomereze mphamvu zongowonjezwdwa.
Kusintha kwa Mode ndi Ntchito Zoteteza:PCS imathandizira machitidwe angapo ogwiritsira ntchito, kuphatikizapo grid{{0}olumikizidwa ndi kuzimitsa-gridi (kuchilumba), ndipo imatha kusintha mwachangu komanso mosavutikira pakati pamitundu yosiyanasiyana. Nthawi yomweyo, imaphatikiza njira zingapo zodzitetezera monga kuchulukitsitsa kwamagetsi, kupitilira, kutentha kwambiri, ndi -}kuteteza kumtunda kuti zitsimikizire kuti makina akugwira ntchito motetezeka pakachitika zovuta, kuteteza zida kuwonongeka kapena ngozi za grid.
Mwachidule, PCS ndi mlatho wofunikira kwambiri wolumikiza kusungirako mphamvu ndi kutumizira mphamvu, kuthandizira kutumiza mphamvu zosinthika, kugwiritsa ntchito moyenera, komanso kugwira ntchito mokhazikika kwa gridi pogwiritsa ntchito kutembenuka kwamphamvu komanso mwanzeru.
PCS Application Scenarios
Kutengera ndi zochitika zosiyanasiyana zogwiritsira ntchito, PCS ikhoza kugawidwa m'magulu atatu: malo opangira magetsi osungira mphamvu, mafakitale ndi malonda, ndi nyumba. Kusiyana kwakukulu kuli mu mphamvu yamagetsi.
Magetsi Osungira Magetsi
Malo akuluakulu-akuluakulu osungira mphamvu zamagetsi amagwira ntchito zingapo zofunika pamagetsi, kuphatikiza kuwongolera pafupipafupi, kuwongolera ma voltage, ndi zosunga zobwezeretsera. Mphamvu zawo za PCS nthawi zambiri zimafika pamiyezo ya megawati kapena kupitilira apo, zokhala ndi mphamvu zoyambira ma megawati angapo mpaka mazana a megawati. Ali ndi zofunikira zokhwima pa liwiro la kuyankha pamakina ndi kuwongolera kolondola, ndipo akuyenera kukhala ndi gridi yolimba-kutha kulumikizana ndi makina ndi kuthekera kolumikizana ndi makina ambiri-pamakina ofananirako kuti awonetsetse kuti magetsi akugwira ntchito motetezeka, moyenera, komanso mokhazikika pakusintha mphamvu-pamlingo wapawiri. Ndiwo gawo lofunikira lothandizira pakumanga ma grid anzeru.
Industrial and Commercial Energy Storage Systems (PCS)
Mphamvu yamagetsi yosungiramo mphamvu zamafakitale ndi zamalonda nthawi zambiri imakhala kuyambira 50kW mpaka 500kW. Poyang'anizana ndi zovuta komanso{3}}zosintha nthawi zonse magetsi ndi momwe amagwirira ntchito, PCS ikuyenera kukhala ndi mphamvu yosinthira yopitilira 98.5% ndi millisecond-level fault ride-kupyolera mu luso lake. Pochita ndendende-kumeta ndi kuchigwa{9}}njira yodzazitsa "kusunga magetsi nthawi yothima{10}}nthawi yomwe simukugwira ntchito komanso kutulutsa nthawi yayitali kwambiri," kumachepetsa mtengo wamagetsi okwera kwambiri kwa mabizinesi ndi 30% -50%. Panthawi imodzimodziyo, kusinthasintha kwake kwa gridi yodzipatula komanso kusintha kosasinthasintha kumatsimikizira kuti magetsi akupitilirabe ku mizere yofunikira kwambiri kapena malo abizinesi, kuwongolera kwambiri kudalirika kwamagetsi ndikukhala woyang'anira kasamalidwe ka mphamvu zamabizinesi.
Residence Energy Storage PCS
Ma PCS osungira mphamvu zogona amakhala ndi mphamvu kuyambira 5kW mpaka 10kW. Mapangidwe ake ophatikizika, osinthika amalola kuyika kosavuta komanso kuphatikiza kopanda msoko ndi magwero amphamvu ogawidwa monga mphamvu yadzuwa padenga. Posunga magetsi oyendera dzuwa masana komanso kunyamula katundu wapakhomo usiku, zimathandiza kuti musamawononge ndalama zambiri komanso zozimitsa-zokwera kwambiri. Kuphatikiza apo, imapereka mphamvu zosunga zobwezeretsera mosasunthika panthawi yamagetsi, ndikuwonetsetsa kuti magetsi amaperekedwa kuzinthu zofunika kwambiri monga mafiriji, kuyatsa, ndi zida zoyankhulirana, motero amapanga njira yotetezeka komanso yodziyimira payokha ya microgrid kunyumba.