Ukugenera kweqembu lokusebenza kwe-PISVG

Ngenkathi ukuthi kwevolitha nokuthuthukiswa ngokuvamile kwalokhu kwalokhu kwelekthronikhi yokumisa amandla, izinkinobho zokulinda okuphezulu kwe-IGBT nokusebenzisa i-DSP (Digital Signal Processing), i-Static Var Generator (SVG okanye njengoba kwa-STATCOM), eyona yinhloko yesikhathi esisha esibonakalayo kuleli qoqo lezimali zokumisa amandla, iyisicathami esibalweni bezi-Flexible Alternative Current Transmission Systems (FACTS) nokusebenzisa amandla wezimali (CP), kuyonkisela indlela yokuthuthukwa kwezinhlobo zokulungisa amandla eziyakhiwako ngokwezinhle.

Izinhlobo zokweqile zokweqile zokugcina kwe-PISVG zisetyenziswa teknoloji yokutransmita AC ephindeke (FACTS), leyo teknoloji yokuqokelela ukutransmitwa kwe-AC eyenzelwe ngokuhlanganisa teknoloji yezinhlelo zokwelapha, teknoloji yemikroprocessor kunye nemikro-elektronics, kunye neteknoloji yokuqaphela. Isiqheloqelo esikhulu sisusebenza kakhulu kwaye kusafisa izinhlelo zokwelapha ezinamandla (thyristors, IGBTs, njll) ukutshintsha amashini okuthekwisa anamandla okugcinwe kwiindleko zokudityaniswa ngokwendlela ye-AC, ukuze kuthathwe ngokuphindekileyo kunye nokushukumisa ngokushesha ukutransmitwa kwe-AC, ngaleyo ndlela kuholela kakhulu kwezimali, ukuchazwa, imisebenzi yokusebenza kunye nobungqina bokukhona kwezinhlelo zokuthekwisa kunye nokugcinwa kwezimali. Yinteknoloji entsha yokubinisa.

Iprodhukthi ifuna i-teknoloji yekhwakhi lombane, enobekuna yokuthi ayinezimimoya yokusebenza, inqanawa encane yesikhathi sokuphendula (kwi-microsecond range), nokuxhumana ok бы ngokukhulu. Kungakhetha ngokuthi kuthuthukisa ubunzima bokuvula kwegridi, ukuthuthukiswa kwevoltage yombhobho, ukulungisa amaloadi angahlanjiswa, ukuthuthukiswa kwe-harmonics yekhurrenti kwegridi, nokulungisa ngokuthi kusibonakale ukuxhomi kwegridi. Okokugcina, kufinyelela kwi-PF0.99, amandla obunzima becala kweqembu elithathu.

Iprodhukthi le ifakwe kwi-standard DL/T 1216-2019 "Isisombululo se-Teknoloji yezinto zokuvuleka zokuvuleka ngaphantsi kwevoltage" kwaye inikwe iiraporti zokuchazwa ngokwesibini.

Amagigijwana okulungisa amandla kwi-modiye evelayo: 30kVar / 50kVar / 75kVar / 100kVar / 150kVar
Amaxesha amakhulu okulungisa amandla kwi-cabinet evelayo: 500kVar

◆ Shesha: Ukulandelana kanye nokulungisa ngokwesikrweletu, impendulo elisha, isikhathi sokuphendula ngokushesha ≤ 1ms, isikhathi esifanayo sokuphendula ≤ 10ms

◆ Glat: Iyakwazi ukuvula ngokuvamthelana i-reactive power, ukunyusela i-reactive current ngokugcizelele, futhi ukulandela iphakathi le-factor nge-0.99

◆ Okudlule kanye: Iphaze yenyani yokunyuselwa iyakwazi ukuguqulwa kusukela ku -90 ku 90 amadigri, futhi i-inductive ne-capacitive reactive power iyakwazi ukupelwa ngokudlule kanye. Kuyisisekelo esinhle kakhulu kumaqo wokuthumela ngaphandle kwezimali ezincane

◆ Ukusebenza kahle: I-capacity yokupelwa iyinkapacity yokuqashwa. Ngokuvunyelwe okufanayo, i-capacity ye-PISVG iyakwazi ukuba 20%-40% ngaphansi kwe-capacity ye-capacitor

◆ Okuthulile: I-LCR encwadini kanye nezibonelo zokulahla zokunyakaza zokuthola ngokuzenzekela, engenazo amathiphu. Izinkinobho eziningi zokuphela kusisusa isebenza sakhiwa ngokuthulile kanye nokusebenza okuthulile

◆ Ukuxhunywa: Iyakwazi ukupelwa reactive power futhi i-harmonic currents edlule i-25th order, ukuxhomekeke kwezilimi eziningi zokuthengisa izimoto, nezinhlelo eziningi kudonga elinye

◆ Ukuwazi: Ukubonakala ngokwabo, ukugcina amathiphu edlule, i-RS485 interface + i-MODBUS, ukugcina ngaphandle

Izinto ezifakwe

◆ IGBT yamandla ephindwa ngokusheshayo

◆ Isicathamiya esijwayelekileyo DC esikhethekileyo yokugcinwa kwezimali

◆ Imodi ye-LCR yokubika

◆ I-DSP-A izinto zokuchitha data nokuxhumana

◆ I-DSP-B izinto zokulungisa kanye nokuhlinzeka

◆ I-FPGA imithwalo yokungenisa imithwalo nezokuphatha

◆ Isikrini esijwayelekileyo sokugcina, uhlelo lwemigwijo olungileyo

•Ukuqwalasela nokukhetha

Imigomo Yokuqwalasela：

I-PISVG static var generator ipheqelela ukungenisa kwekhiwane ngokungenakho ngokudlulisa i-current transformer (CT), isebenza ukutholakala kwekhiwane ngokungenakho ngokusebenzisa i-DSP, bese ikhontrolela i-PWM signal generator ukuthumelela amasinyo kwi-IGBT ngokulinganisa, ngaleyo ndlela inverter iyakhiwa ukutholakala okudingekayo, bese kuyekela ukutholakala okuphathelene.

Izimo kanye neNkqubo Zokusebenza：

I-PISVG inekhweyitshwe yoku-0.99 yohlelo lokwenza amandla aphawuliweyo, engakwazi ukulungisa amandla we-khavasithi ne-ndukthivu kanye nezindlela ezingaphanayo. Isiphumo sokulungisa amandla singekhweyitshwe kanye nekasi, noma yiziphi izigaba ezingaba ngemizuzwana yokuphendula ngaphansi kwe-50us. Kufanele kusetshenziswe kaphalelwa lapho amandla aphawuliweyo ayishintshanga. Isikhathi sokulungisa sifanayo nesikhathi sokufakwa, asikhathwa yizinkinga zokukhuphuka kwezinhloso, akayilungisa amandla ohlelweni, asine reshonansi, kanye kusetshenziswe kaphalelwa lapho kunezinga elikhulu kakhulu.

Imicwephele Yokusetyenziswa：

Ukubala i-Reactive Compensation Capacity ye-PISVG: I-total capacity ye-reactive compensation ngokwesiko kuyadinga ngokulinganisa kwe-transformer, futhi i-compensation ephakathi kuyadinga kwe-20% kuya kwe-30% ye-transformer capacity.

1. I-quick configuration ngasemaphakathi iyindatha ephakathi kwezimali zokuvakwa. Kusebenzweni ngempela, abasebenzisi abancane mayelana ngenkathi yabo yokwenza amandla akhona ngaphezulu kwezindatha eziqinisekisiweyo. Ngemuva kwalokho, i-compensation capacity ingahlelwa ngokulinganisa ngenkathi yamandla empeleni.

2. I-quick configuration ngasentla yilabo abafakwe kakhulu xa konke le PISVG lifatwa. Kwiindlela ezininzi zokusebenza, amamodoli we-50-100 kvar SVG kunye ne-harmonic suppression reactive power compensation ingaba enyeke ngokudityaniswa ukuze adwenwe ngokudityaniswa. Ixesha lokuba le nto kuyindlela efanayo xa ubunzima bungabizi, oku kungenisa ubuncinane beSVG kwaye ukuvutha izindleko.

3. Ukuba ukulingiswa kufuneka, kwiindlela zokusebenza apho kungakho kune-15 i-low-order harmonic currents kunye ne-harmonic voltage content rate ingaphantsi kwe-5%, kufuneka ukuncedisiwe ngokuchanekileyo kwezimali zokulingiswa zidibanisiwe ngokulingana ne-harmonic current value, kwaye ukuvutshelwe ngokusebenza kwe-active power filtering ukuze upumele kwezibini kwi-harmonic filtering kunye ne-reactive power compensation.

4. Uma uma kufanele kwenziwe ukukhala, kuzimiselelo zokubhongotha lapho kunezindlela ezingu-15 zokugcina kwekwezulu kanye nekwekwezulu yekhweleti yekhweleti kakhulu kunoma 5%, amadivayisi akhethekileyo wefilti yamandla e-PIAPF fanele aqoshwe futhi ukulawulwa kwamandla.