Ukuthuthukiswa Kobuchwepheshe Kokudluliswa kwe-AC ye-UHV kanye Nezisetshenziswa Zokuguqula

Idivayisi yesinxephezelo yochungechunge lwe-UHV

Ngokwakhiwa kwesilinganiso esikhulu samaphrojekthi kagesi we-ultra-high, okokusebenza okuyisisekelo kuwukhiye.

Ukuze kuthuthukiswe ukuthuthukiswa okuqhubekayo kobuchwepheshe bokudlulisa be-UHV AC, ukuthuthukiswa kobuchwepheshe kwakamuva kwemishini ebalulekile

njenge-UHV AC transformer, i-gas insulated metal enclosed switchgear (GIS), idivayisi yesinxephezelo esiwuchungechunge nesibambisi sombani

kufinyeziwe futhi okulindelwe.

Imiphumela ibonisa ukuthi:

Inani elivumelekile lamandla enkundla kagesi lapho ithuba lokukhipha ingxenye ye-UHV transformer ingu-1 ‰ lizokhethwa njenge

amandla enkambu avumelekile;

Izinyathelo zokulawula ukuvuza kazibuthe njengokuvikela kazibuthe ekugcineni komzimba, ukuvikela ugesi kwethangi likawoyela, ukuvikela kazibuthe

yethangi likawoyela, kanye nepuleti lensimbi elingenazibuthe linganciphisa ngempumelelo ukuvuza kazibuthe nokukhuphuka kwezinga lokushisa kwe-1500 MVA.

umthamo omkhulu we-UHV transformer;

Amandla okuphuka kwe-UHV circuit breaker angafinyelela ku-63kA.I-synthetic test circuit esekelwe "indlela yesekethe emithathu" ingaphuka

ngokusebenzisa umkhawulo wezinto zokuhlola bese uqedela ukuhlolwa kokuphulwa kwe-circuit breaker engu-1100kV;

Kuyacaca ukuthi i-amplitude kanye nemvamisa ye-VFTO kunqunyelwe ngokufaka izinto eziphikisayo ezimanzi ohlangothini lokuxhumana olumile lwe-"vertical"

izinqamuli;

Ngokombono we-voltage yokusebenza okuqhubekayo, kuphephile ukwehlisa i-voltage elinganiselwe yesibambi se-UHV ibe ngu-780kV.

I-UHV AC yesikhathi esizayo yokudlulisa amandla kanye nemishini yokuguqula kufanele ifundwe ngokujulile mayelana nokuthembeka okuphezulu, umthamo omkhulu,

umgomo omusha wokusebenza kanye nokwenza kahle kwepharamitha yokusebenza.

Isiguquli se-UHV AC, i-switchgear, idivayisi yesinxephezelo esiwuchungechunge nesibambisi sombani yizinto eziyinhloko zokudlulisa i-UHV AC

iphrojekthi.Kulokhu, sizogxila ekulungiseni nasekufingqeni intuthuko yakamuva yobuchwepheshe yalezi zinhlobo ezine zemishini.

Ukuthuthukiswa kwedivayisi yesinxephezelo yochungechunge lwe-UHV

Idivayisi yesinxephezelo yochungechunge lwe-UHV ixazulula ikakhulukazi izinkinga ezilandelayo: umthelela wokusetshenziswa kwesinxephezelo sochungechunge

izici zesistimu, ukwenziwa kahle kwamapharamitha wobuchwepheshe abalulekile wochungechunge lwesinxephezelo, i-anti electromagnetic eqinile

Ukuphazamisa amandla okulawula, ukuvikela kanye nohlelo lokulinganisa, ukwakheka nokuvikelwa kwebhange elikhulu le-capacitor,

umthamo wokugeleza nokuthembeka kokusebenza kochungechunge lwegebe lenhlansi yesinxephezelo, umthamo wokukhishwa kwengcindezi nokusebenza kwamanje kokwabelana

we-voltage limiter, amandla okuvula nokuvala okusheshayo kwe-bypass switch, idivayisi yokuthambisa, ikholomu yefayibha Isakhiwo

ukuklanywa kwe-transformer yamanje kanye nezinye izindaba ezibalulekile zobuchwepheshe.Ngaphansi kwezimo ze-ultra-high voltage, i-ultra-high current kanye ne-ultra-high

umthamo, inkinga yokuthi inombolo yezinkomba zobuchwepheshe ezibalulekile zochungechunge lwemishini eyinhloko yesinxephezelo ifinyelela umkhawulo wokusebenza

sekunqotshiwe, futhi imishini yokuqala yesinxephezelo yochungechunge lwamandla kagesi aphezulu kakhulu isithuthukisiwe, futhi konke sekuzuziwe.

ukwenziwa kwasendaweni.

Ibhange le-Capacitor

Ibhange le-Capacitor lesinxephezelo sochungechunge liyingxenye eyisisekelo yokuqaphela umsebenzi wesinxephezelo sochungechunge, futhi ingenye yezihluthulelo.

imishini yochungechunge lwensiza yesinxephezelo.Inani lama-capacitor esinxephezelo sochungechunge lwe-UHV kusethi eyodwa lifinyelela ku-2500, izikhathi ezi-3-4

yesinxephezelo sochungechunge lwe-500kV.Ibhekene nenani elikhulu lezinkinga zokuxhuma okuhambisanayo kochungechunge lwamayunithi we-capacitor ngaphansi okukhulu

umthamo wesinxephezelo.Kuhlongozwa uhlelo lokuvikela ibhuloho eliphindwe kabili e-China.Ihlanganiswe nobuchwepheshe bezintambo zikanokusho, iyaxazulula

inkinga yokuxhumanisa phakathi kokuzwela kokutholwa kwamanje okungalingani kwama-capacitor nokulawulwa kwamandla ajovwe, futhi

ixazulula inkinga yezobuchwepheshe yokuqhuma okungenzeka kochungechunge lwamabhange e-capacitor.Umdwebo webhizinisi nomdwebo wohlelo lwezintambo we-capacitor yochungechunge

amabhange akhonjisiwe kuMfanekiso 12 no-13.

Izibalo 12 Capacitor bank

Izibalo 13 Imodi yezintambo

Umkhawulo wokucindezela

Ngokubheka izidingo zokuthembeka ezidinga kakhulu zesinxephezelo sochungechunge lwe-UHV, indlela yokufanisa i-resistor chip ikhethekile.

kulungiselelwe, futhi i-shunt coefficient phakathi kwamakholomu incishisiwe isuka ku-1.10 iye ku-1.03 ngemva cishe kwamakholomu e-resistor chip angu-100 wesigaba ngasinye.

i-voltage limiter ixhunywe ngokuhambisana (ikholomu ngayinye ye-resistor chip ixhunywe ochungechungeni ngabaphikisi abangu-30).Ingcindezi eklanywe ngokukhethekile

isakhiwo sokukhululwa siyamukelwa, futhi amandla okukhululwa kwengcindezi afinyelela ku-63kA/0.2s ngaphansi kwesimo sokuthi ingcindezi yejazi le-porcelain

Iyunithi ye-limiter ingu-2.2m ukuphakama futhi asikho isihlukanisi se-arc ngaphakathi.

Igebe lenhlansi

I-voltage elinganiselwe yegebe lenhlansi yesinxephezelo sochungechunge lwe-UHV ifinyelela ku-120kV, ephakeme kakhulu kuno-80kV wegebe lenhlansi le-UHV.

isinxephezelo sochungechunge;Umthamo wamanje wokuthwala ufinyelela ku-63kA/0.5s (inani eliphakeme elingu-170kA), izikhathi ezingu-2.5 kunegebe lamandla kagesi aphezulu kakhulu.I

igebe lenhlansi elithuthukisiwe linokusebenza okufana nokunemba, okulawulekayo futhi okuzinzile kwe-trigger discharge voltage, iphutha elanele lokuthwala

umthamo (63kA, 0.5s), amakhulukhulu ama-microseconds abangela ukubambezeleka kokukhishwa, amandla okubuyisela ngokushesha okokufaka okuyinhloko (ngemuva kokudlula ku-50kA/60ms

okwamanje, i-voltage yokutakula ngeyunithi ngayinye ifinyelela ku-2.17 ngesikhawu sama-650ms), ukumelana okuqinile kokuphazamiseka kwe-electromagnetic, njll.

Inkundla yesinxephezelo yochungechunge

Inkundla yesinxephezelo yochungechunge lwe-UHV ehlangene, esindayo, esezingeni eliphezulu lokuzamazama komhlaba isiklanywe, yakha i-UHV yamazwe ngamazwe eyingqayizivele.

uchungechunge lwesinxephezelo sohlobo lokuhlola kanye nekhono locwaningo;Imodeli enezinhlangothi ezintathu zomshini namandla enkundla yokuhlaziya yenkimbinkimbi

kwakhiwa imishini eminingi, kanye nesakhiwo esihlangene kanye nohlelo lokusekela lwezingxenyekazi ezintathu zengxenye yemishini yebhasi ehlanganisiwe

futhi kuhlongozwa isakhiwo esikhulu sokubiyela, esixazulula izinkinga ze-anti-seismic, ukuxhumanisa ukuxhuma kanye nemvelo kagesi

ukulawula isiteji sokukhuluphala ngokweqile (200t);Inkundla yokuhlola yochungechunge lwe-UHV yesinxephezelo yohlobo lwangempela yakhiwe, eyenze ubukhulu obukhulu

ukuxhumanisa ukwahlukanisa kwangaphandle, i-corona namandla enkundla yesikhala, ukuhambisana kwe-electromagnetic kwemishini yamanje ebuthakathaka endaweni yesikhulumi

kanye namanye amakhono okuhlola enkundla yesinxephezelo yochungechunge, egcwalisa okungenalutho kochungechunge locwaningo lwesinxephezelo se-UHV.

Isixhumi se-Bypass nesinqamuleli sokudlula

Igumbi lokucisha i-arc elinamandla amakhulu kanye nendlela yokusebenza enesivinini esiphezulu kwakhiwe, okuxazulule izinkinga zokuqondisa.

namandla emishini ka-10m ultra long insulated induku yokudonsa ngaphansi kwesenzo sesivinini esikhulu.Iswishi yokuqala yohlobo lwekholomu yephorcelain ye-SF6

ngesakhiwo esimise okwe-T sathuthukiswa, ngesilinganiso samanje se-6300A, isikhathi sokuvala esingu-≤ 30ms, kanye nempilo yemishini izikhathi ze-10000;

Indlela yokwengeza i-axiliary vacuum circuit breaker kothintana naye oyinhloko kanye nokushintsha kwamandla ngesigxobo esikhulu kuhlongozwa.Okokuqala

isixhumi se-bypass esivulekile siyathuthukiswa, futhi amandla okushintsha amanje athuthukiswa kakhulu ukuze abe ngu-7kV/6300A.

Ukuhambisana kwe-electromagnetic kwemishini yamanje ebuthakathaka endaweni yesikhulumi

Izinkinga zobuchwepheshe ezifana nokulawulwa kwe-overvoltage yesikhashana kuplathifomu yesinxephezelo yochungechunge lwe-UHV kanye nokuhambisana kwe-electromagnetic

imishini yamanje ebuthakathaka ngaphansi kokuphazamiseka okukhulu nokunamandla okunamandla kunqotshiwe, kanye nenkundla yesinxephezelo yochungechunge

isistimu yokulinganisa kanye nebhokisi lokulawula i-spark gap trigger elinamandla amakhulu kakhulu wokuphazanyiswa kwe-electromagnetic

ithuthukisiwe.Umfanekiso 14 wumdwebo wenkambu wedivayisi yesinxephezelo yochungechunge lwe-UHV.

Isethi yokuqala yamazwe ngamazwe yesinxephezelo esimisiwe sochungechunge lwe-UHV yakhiwe ngokuzimele yi-China Electric Power Research Institute

ifakwe ngempumelelo kuphrojekthi yokunwetshwa yephrojekthi yokubonisa i-UHV AC.Isilinganiso samanje sedivayisi

ifinyelela ku-5080A, futhi umthamo olinganiselwe ufinyelela ku-1500MVA (amandla asebenzayo).Izinkomba zobuchwepheshe eziyinhloko zisezingeni lokuqala emhlabeni.I

umthamo wokudlulisa wephrojekthi yokubonisa ukuhlolwa kwe-UHV ukhuliswe ngesigidi esi-1 kW.Umgomo wokudluliswa okuzinzile okungu-5

isigidi kW ngesekethe eyodwa yemigqa ye-UHV isizuziwe.Kuze kube manje, ukusebenza okuphephile, okuzinzile futhi okuthembekile kuye kwagcinwa.

Umfanekiso 14 1000KV UHV Series Idivayisi Yesinxephezelo