A Sistimi ea Phetoho ea Matla (PCS)ke sesebelisoa sa elektronike se nang le matla a mangata se etselitsoeng tšebeliso-seseteme ea ho boloka matla a betri. E nolofalletsa phetoho ea mefuta ea matla a motlakase le phallo ea matla a mabeli, e ts'ehetsa matla a DC ho fihla ho 1500V. PCS e sebelisoa haholo lits'ebetsong tsa polokelo ea matla le phepelong ea matla a ka nchafatsoang.
E fumaneha lipakeng tsabetri ea polokelo ea matlale marang-rang a matla, ke karolo ea mantlha e nolofalletsang ho phalla ha matla a motlakase ka mahlakoreng a mabeli pakeng tsa mokhoa oa ho boloka matla le marang-rang a matla. E sebelisetsoa ho laola betri ho etsa phetoho e nepahetseng ea AC / DC nakong ea ts'ebetso ea ho tjhaja / ho ntša le ho etsa mesebetsi ea bohlokoa ea phetoho ea matla a motlakase a mabeli le tsamaiso ea tsamaiso.
Kamoo PCS e sebetsang kateng
Molao-motheo oa ts'ebetso oa PCS ke ho finyella phallo ea bobeli le ho fetola phetoho ea matla a motlakase: pakeng tsa mahlakoreng a AC le DC, ka ho laola lisebelisoa tsa semiconductor ea matla, matla a AC a tsoang ho grid a lokisoa ka matla a DC ho lefisa betri; kapa matla a DC a tsoang betiring a fetisetsoa ho matla a AC ho iphepa ho grid. Ts'ebetso ena e laoloa ka mokhoa o ts'oanelang ke microgrid monitoring system, e ka sebelisang matla a sa feleng (PQ) kapa kamehla hona joale (CC) ho laola ka nepo phallo ea matla ea ho tjhaja le ho ntša betri (joalo ka ho kuta le ho tlatsa phula), 'me ka nako e ts'oanang e thethefatsa ho fetoha ha matla a matla a feto-fetohang mehloling ea matla joalo ka matla a moea le photovoltaics.
Ts'ebetsong ea grid ea matla, Power Control System (PCS) e bapala likarolo tse ngata tsa bohlokoa:
1. Ho boloka ts'ebetso ea marang-rang e tsitsitseng: Ho fana ka matla a bekapo nakong ea ho se tsitse ha grid, ho netefatsa ts'ireletseho ea betri ka ho buisana le Battery Management System (BMS), le ho nolofalletsa-liteishene tse kholo tsa polokelo ea matla hore li fihlelle taolo e feto-fetohang ea tsamaiso ea motlakase le ho ntlafatsa katleho ea moruo ka PCS.
2. Ho netefatsa ts'ireletso ea betri: Ho sebetsa 'moho le BMS, ho netefatsa hore libeteri li sebetsa ka har'a meeli e sireletsehileng le ho thibela likotsi tse kang ho tjhaja ho feta tekano le{1}}ho chacha ho feta tekano.
3. Ho ntlafatsa maemo a tsamaiso le moruo: Haholo-holo-liteishene tse kholo tsa polokelo ea matla, PCS ke senotlolo sa ho fihlela taolo ea sistimi ea matla e feto-fetohang (joalo ka ho kuta le ho tlatsa liphula, taolo ea khafetsa) le ho ntlafatsa katleho ea moruo.
Likarolo tsa mantlha le mesebetsi ea PCS
PCS (Power Control System) e na le hardware e kang IGBTs (Insulated Gate Bipolar Transistors), PCBs (Printed Circuit Boards), le mehala le likhoele. Likarolo tsa eona tsa mantlha le mesebetsi ke tse latelang:
Phetoho ea Matla a Bidirectional:PCS e ka fetolela hona joale (DC) ho ea ho alternating current (AC) le ka tsela e fapaneng, e nolofalletsang ho phalla ha matla a mabeli pakeng tsa marang-rang, libeteri le thepa. Ka mohlala, setsing sa polokelo ea matla, e ka fetola grid AC ho ea DC ho tjhaja betri nakong ea-lihora tse phahameng haholo, le ho fetolela DC ea betri hore e be AC ho sebelisa marang-rang kapa ho fana ka lintho tse ngata tsa lehae nakong ea lihora tse phahameng haholo.
Taolo e nepahetseng ea Matla:Ka li-algorithms tsa taolo e tsoetseng pele, PCS e khona ho fetola boholo le tataiso ea ho tjhaja le ho ntša matla ka nako ea nnete, e arabela hantle ho litaelo tsa ho romelloa ha grid kapa matšoao a tsoang ho Battery Management System (BMS), ho netefatsa katleho le botsitso ba phetoho ea matla. Mohlala, e ka fetola ka matla ho tjhaja le ho tjhaja ha jwale, voltage, le maqhubu ho ipapisitse le diphetoho tsa matla a grid kapa boemo ba betri.
Ntlafatso ea Boleng ba Matla:PCS e na le khatello ea harmonic le ts'ebetso ea matšeliso a matla a sebetsang, e ka ntlafatsang boleng ba matla a hlahisoang le ho fokotsa tšitiso ho grid. Maemong a macha a phepelo ea matla, e ka boela ea thethefatsa ho feto-fetoha ha matla a tlhahiso ea mehloli ea matla ea nako le nako e kang photovoltaics le matla a moea, ho etsa hore curve ea tlhahiso ea matla e be e tsitsitseng le ho ntlafatsa bokhoni ba marang-rang ho amohela matla a tsosolositsoeng.
Mesebetsi ea ho Fetola le Ts'ireletso:PCS e ts'ehetsa mekhoa e mengata ea ts'ebetso, ho kenyeletsoa grid{{0}e hoketsoeng le e koetsoeng-grid (sehlekehleke), 'me e khona ho fapoha lipakeng tsa mefuta e fapaneng ka potlako le ka ntle. Ka nako e ts'oanang, e kopanya mekhoa e mengata ea ts'ireletso e kang ho felloa ke matla, ho fetella, mocheso o feteletseng, le ho thibela{3}}sehlekehleke ho netefatsa ts'ebetso e sireletsehileng ea tsamaiso tlas'a phoso kapa maemo a sa tloaelehang, ho thibela tšenyo ea thepa kapa likotsi tsa marang-rang.
Ka bokhutšoane, PCS ke borokho ba bohlokoa bo hokahanyang polokelo ea matla le phetisetso ea matla, e tsamaisang phetisetso ea matla e feto-fetohang, tšebeliso e nepahetseng, le ts'ebetso e tsitsitseng ea marang-rang ka phetolo le taolo e sebetsang hantle le e bohlale.
Maemo a Kopo a PCS
Ho ipapisitsoe le maemo a fapaneng a ts'ebeliso, PCS e ka aroloa ka mekhahlelo e meraro: liteishene tsa matla a polokelo ea matla, indasteri le khoebo, le bolulo. Phapang e kholo e teng ho matla a matla.
Libaka tsa Matla a ho Boloka Matla
-liteishene tse kholo tsa polokelo ea matla li bapala likarolo tse ngata tsa bohlokoa mochining oa motlakase, ho kenyeletsoa taolo ea maqhubu, taolo ea motlakase, le bekapo. Matla a bona a PCS hangata a fihla maemong a megawatt kapa ka holimo, ka matla a ho tloha ho li-megawatt tse 'maloa ho isa ho li-megawatt tse makholo. Ba na le litlhokahalo tse thata bakeng sa lebelo la karabelo ea sistimi le taolo e nepahetseng, 'me ba tlameha ho ba le grid e matla-ho ikamahanya le maemo le bokhoni ba ho hokahanya{4}}ka mochini o mongata o bapileng ho netefatsa ts'ebetso e bolokehileng, e sebetsang hantle, le e tsitsitseng ea sistimi ea motlakase nakong ea -phetoho e kholo ea likarolo tse peli. Ke karolo ea bohlokoa ea ts'ehetso bakeng sa kaho ea li-grid tse bohlale.
Litsamaiso tsa polokelo ea Matla a Liindasteri le Khoebo (PCS)
Mefuta ea matla bakeng sa lits'ebetso tsa polokelo ea matla ea indasteri le ea khoebo hangata e tloha ho 50kW ho isa ho 500kW. E shebane le-a fetohang ka linako tsohle le maemo a ho sebetsa a motlakase, PCS e tlameha ho ba le matla a ho fetolela a fetang 98.5% le millisecond-level fault ride-ka bokhoni. Ka ho etsa tlhōrō e nepahetseng-ea ho kuta le phula{9}}leano la ho tlatsa la "ho boloka motlakase nakong ea ho tima{10}}lihora tse sa sebetseng hantle le ho qhala nakong ea lihora tse phahameng haholo," ho fokotsa litšenyehelo tse phahameng tsa motlakase bakeng sa likhoebo ka 30% -50%. Ka nako e ts'oanang, karohano ea grid ea eona ea ho feto-fetoha le ts'ebetso ea ho chencha e seamless e netefatsa phepelo e tsoelang pele ea motlakase ho likhoele tsa bohlokoa tsa tlhahiso kapa meaho ea khoebo, e ntlafatsa haholo ts'epo ea motlakase le ho ba mohlokomeli oa taolo ea matla a khoebo.
Li-PCS tsa polokelo ea Matla a Bolulo
PCS ea polokelo ea matla ea bolulo hangata e fapana ho tloha ho 5kW ho isa ho 10kW. Moetso oa eona o kopaneng, oa modular o lumella ho kengoa habonolo le ho hokahana ka mokhoa o se nang moeli le mehloli ea matla e ajoang joalo ka matla a letsatsi a marulelong. Ka ho boloka matla a mangata a letsatsi mots'ehare le ho fana ka meroalo ea ntlo bosiu, e baballa litjeho tse phahameng haholo le tsa ho tima{4}matla a holimo haholo. Ho feta moo, e fana ka matla a ho boloka a se nang moeli nakong ea ho tima ha gridi, e ntse e netefatsa phepelo ea motlakase ho mejaro e boima joalo ka lihatsetsi, mabone le lisebelisoa tsa puisano, ka hona e theha tharollo ea microgrid e bolokehileng le e ikemetseng bakeng sa ntlo.