Ulwazi oluyisisekelo lwabasebenzisi
Imboni enezikhala ezishiselwe ikakhulukazi ikhiqiza amashidi anezikhala ashiselwe, amanetha othango, amanetha asezindaweni eziwutshani, amanetha e-gabion, amanetha e-hook, amanetha ososo, amakheji onogwaja, njll. Imishini yokukhiqiza yenkampani iyimishini yokushisela emikhulu, emaphakathi nencane, futhi ama-transformer asabalalisa 1000 kVA kanye nama-transformer angu-1630 kVA.Umdwebo wesistimu yokunikezwa kwamandla umi kanje:
Idatha yangempela yokusebenza
Amandla aphelele omshini wokushisela one-1000KVA transformer yi-1860KVA, isici samandla esimaphakathi yi-PF=0.7, kanti ukuguquguquka kokusebenza kwamanje ngu-1050-2700A.Amandla aphelele omshini wokushisela nge-630KVA transformer yi-930KVA, isici samandla esimaphakathi yi-PF=0.7, kanye nokuguquguquka kokusebenza kwamanje I-current is 570-1420A.
Ukuhlaziywa Kwesimo Sesistimu Yamandla
Ugesi womshini wokushisela usetshenziswa kakhulu ukwehlisela phansi umthwalo omkhulu wamanje, okungumthwalo ongaqondile.Imishini ikhiqiza inani elikhulu lama-harmonics ngesikhathi sokusebenza.I-harmonic yamanje yomthombo ojwayelekile we-harmonic ijovwa kugridi yamandla, futhi i-impedance yegridi ikhiqiza i-harmonic voltage, okubangela i-voltage yegridi kanye nokuhlanekezela kwamanje kuthinta ikhwalithi yokunikezwa kwamandla kanye nokuphepha kokusebenza, kwandisa ukulahlekelwa kolayini kanye nokunciphisa i-voltage, futhi kwenyusa amandla.Ngakho-ke, kuyadingeka ukukhetha isoftware yesistimu ngokucindezelwa kwe-harmonic ukucindezela ama-harmonics, ukunxephezela imithwalo esebenzayo, nokuthuthukisa isici samandla.
Hlunga uhlelo lokwelashwa kwesinxephezelo samandla asebenzayo
Imigomo yokubusa
Idizayini yempahla yesinxephezelo yesihlungi ihlangabezana nezidingo zokucindezelwa kwe-harmonic kanye nokuphathwa kokucindezelwa kwamandla okusebenzayo.
Ngaphansi kwemodi yokusebenza yesistimu engu-0.4KV, ngemva kokuthi isisetshenziswa sesinxephezelo sesihlungi sesiqalile ukusebenza, ishayela liyacindezelwa, futhi isilinganiso samandla sanyanga zonke sicishe sibe ngu-0.92.
I-high-order harmonic resonance, i-resonance overvoltage, kanye ne-overcurrent okubangelwa ukuxhuma kumjikelezo wegatsha lesinxephezelo sesihlungi ngeke kwenzeke.
Umklamo Ulandela Amazinga
Ikhwalithi yamandla Ama-harmonics egridi yomphakathi GB/T14519-1993
Ikhwalithi yamandla Ukushintshashintsha kwe-Voltage nokucwayiza kwe-GB12326-2000
Izimo zobuchwepheshe ezijwayelekile zedivayisi yesinxephezelo samandla asebenzayo aphansi-voltage GB/T 15576-1995
Idivayisi yesinxephezelo samandla asebenzayo we-low-voltage JB/T 7115-1993
Izimo zobuchwepheshe zesinxephezelo samandla asebenzayo JB/T9663-1999 “Isilawuli sesinxephezelo esizenzakalelayo samandla asebenzayo aphansi-voltage” kusukela enanini eliphezulu lomkhawulo wamanje we-harmonic wamandla aphansi kanye nempahla kagesi GB/T17625.7-1998
Imigomo ye-Electrotechnical Amandla capacitor GB/T 2900.16-1996
I-voltage ephansi ye-shunt capacitor GB/T 3983.1-1989
I-Rector GB10229-88
I-Reactor IEC 289-88
I-oda yesilawuli sesinxephezelo samandla asebenzayo aphansi asebenzayo izimo zobuchwepheshe DL/T597-1996
Ibanga eliphansi le-voltage yokuvikela indawo kagesi engu-GB5013.1-1997
I-low-voltage ephelele yokushintsha kanye nemishini yokulawula GB7251.1-1997
Design imibono
Ngokusekelwe esimeni sangempela sebhizinisi, inkampani icubungula ngokugcwele isici samandla omthwalo kanye nokucindezelwa kwe-harmonic yesinxephezelo samandla asebenzayo esihlungi omshini wokushisela, bese ifaka isihlungi sedivayisi yesinxephezelo samandla asebenzayo ohlangothini lwe-0.4KV lwe-low-voltage yebhizinisi. i-transformer yokucindezela ama-harmonics futhi inxephezele amandla asebenzayo ukuze kuthuthukiswe isici samandla.
Ngesikhathi sokusebenza komshini wokushisela, izikhathi ezi-3 ze-150HZ, izikhathi ezi-5 ze-250HZ nangaphezulu kwama-harmonics akhiqizwa.Ngakho-ke, ekwakhiweni kwesinxephezelo samandla asebenzayo wesihlungi sesibili somshini wokushisela, imvamisa ye-150HZ, 250HZ nendawo ezungezile kufanele yakhelwe ukuqinisekisa ukuthi iluphu yesinxephezelo sesihlungi ingacindezela ngokunengqondo ukushaya kwenhliziyo ngenkathi kunxeshezelwa umthwalo osebenzayo futhi ithuthukisa amandla. isici.
umsebenzi wokuklama
Isici samandla esibanzi somugqa wokukhiqiza womshini wokushisela wesibili ohambisana ne-transformer engu-1000 kVA inxeshezelwa ukusuka ku-0.7 kuya cishe ku-0.92.Idivayisi yokuhlunga Impahla yesinxephezelo kufanele ifakwe enamandla angu-550 kVA.Amaqembu angu-9 wama-capacitor ekuhlukaniseni kwesigaba axhumeke ngokuzenzakalelayo futhi anqanyuliwe, ngalinye elihambisana nokujikajika ohlangothini olungezansi lwe-voltage ye-transformer.Umthamo wokulungiswa kwekilasi ngu-25KVAR, ongahlangabezana nezidingo ezihlukahlukene zamandla omshini wokushisela wewaranti yesibili.Isici samandla esibanzi somshini wokushisela wesiqinisekiso sesibili esifaniswa ne-transformer engu-630 kVA inxephezelwa ukusuka ku-0.7 kuya cishe ku-0.92.Impahla yesinxephezelo yedivayisi yokuhlunga kumele ifakwe amandla angu-360 kVA.Amaqembu angu-9 wama-capacitor ekuhlukaniseni kwesigaba axhumeke ngokuzenzakalelayo futhi anqanyuliwe, ngalinye elihambisana nokujikajika ohlangothini olungezansi lwe-voltage ye-transformer.Umthamo wokulungiswa kwekilasi ngu-25KVAR, ongahlangabezana nezidingo ezihlukahlukene zamandla omugqa wokukhiqiza.Lo mklamo wanele ukuqinisekisa ukuthi isici samandla esilungisiwe singaphezu kuka-0.92.
Ukuhlaziywa komthelela ngemva kokufakwa kwesinxephezelo sesihlungi
Ngo-April 2010, idivayisi yesihlungi sokunxephezela amandla asebenzayo yomshini wokushisela yathunyelwa ngaphandle kwefekthri.Idivayisi ilandelela ngokuzenzakalelayo ushintsho lomthwalo womshini wokushisela, icindezela amandla asebenzayo esinxephezelo se-harmonic ngesikhathi sangempela, futhi ithuthukisa isici samandla.imininingwane kanjena:
Ngemva kokuthi idivayisi yesinxephezelo sesihlungi isiqalile ukusetshenziswa, ijika lokushintsha isici samandla licishe libe ngu-0.97 (ingxenye ephakanyisiwe icishe ibe ngu-0.8 lapho kukhishwa idivayisi yesinxephezelo sesihlungi)
Layisha ukusebenza
Ukusebenza kwamanje kwe-1000KVA transformer yehla ukusuka ku-1250A kuya ku-1060A, izinga lokunciphisa lika-15%, futhi ukusebenza kwamanje kwe-transformer engu-630KVA yehla ukusuka ku-770A kuya ku-620A, izinga lokunciphisa lika-19%.Ngemva kwesinxephezelo, inani lokunciphisa ukulahlekelwa kwamandla ngu-WT=△Pd*(S1/S2)2*τ*[1-(cosφ1/cosφ2)2]=24×{(0.85×2000)/2000}2×0.4≈16 (kw h) Kufomula, i-Pd ukulahleka kwe-short-circuit ye-transformer, engu-24KW, futhi ukonga konyaka wezindleko zikagesi ngu-16*20*30*10*0.7=67,000 yuan (ngokusekelwe ekusebenzeni amahora angu-20 a usuku, izinsuku ezingu-30 ngenyanga, izinyanga ezingu-10 ngonyaka, 0.7 yuan kWh ngayinye).
isimo amandla factor
Isici samandla esiphelele sebhizinisi sikhuphuke sisuka ku-0.8 saya ku-0.95 enyangeni yamanje, futhi isici samandla sanyanga zonke sizohlala ku-0.96-0.98 esikhathini esizayo, futhi ibhonasi yanyanga zonke izoba ngu-3000-5000 yuan.
Ekuphetheni
Idivayisi yesinxephezelo samandla asebenzayo esihlungi yomshini wokushisela kagesi inamandla okucindezela ama-harmonics kanye nokunxephezela amandla asebenzayo, ukuxazulula inkinga yezinhlawulo zamandla asebenzayo emabhizinisini, ukuthuthukisa amandla okukhipha ama-transformer, ukunciphisa ukulahlekelwa okusebenzayo okwengeziwe, ukukhulisa ukukhiqizwa, nokuletha umnotho obalulekile. izinzuzo kumabhizinisi.Buyela ekutshalweni kwezimali esikhathini esingaphansi konyaka.Ngakho-ke, idivayisi yesinxephezelo samandla esisebenzayo ekhiqizwa inkampani yaneliseke kakhulu, futhi izoheha amakhasimende amaningi esikhathini esizayo.
Isikhathi sokuthumela: Apr-14-2023