Ngokuqhubeka okuqhubekayo kokwakhiwa kwephrojekthi yokudlulisa amandla e-UHV AC/DC, imiphumela yocwaningo yokudluliswa kwamandla e-UHV kanye nobuchwepheshe benguquko iya ngokuya iba miningi, ehlinzeka ngosekelo oluqinile lwesayensi nobuchwepheshe ekwakheni ibhizinisi le-inthanethi lamandla elihamba phambili emhlabeni elinezici zesiShayina.Ngokuthuthuka okusheshayo kwegridi yamandla, inkinga ye-short-circuit current kancane kancane ibe yinto evelele evimbela ukukhula komthamo wegridi yamandla kanye nokuthuthukiswa kwegridi yamandla.
Umthamo wokuphuka we-high-voltage high-power circuit breaker inquma ngokuqondile ukuphepha nokuthembeka kwesevisi yesikhathi eside yezintambo zokudlulisa amandla.Kusukela ngo-2016, ukuthembela enanini lamaphrojekthi wesayensi nobuchwepheshe we-State Grid Co., Ltd., amandla omhlaba jikelele we-Internet Research Institute Co., Ltd. kanye ne-PingGao Group Co., Ltd. athuthukise ngempumelelo ukuxhumana okusha okuguquliwe kwe-graphene esebenza kahle kakhulu. imikhiqizo ngemva kweminyaka emihlanu yocwaningo lwesayensi.Lokhu kubaluleke kakhulu ukuxazulula inkinga yesifunda esifushane esidlula izinga kanye nokuqinisekisa ukusebenza okuphephile nokuzinzile kwegridi yamandla ayingxube ye-AC / DC UHV
Ucwaningo mayelana nokuthuthukiswa kwezinto ezisetshenziswayo ze-circuit breaker okuhloswe ngazo izidingo ezibalulekile
Ngokwezibalo ezifanele, phakathi nenkathi ephakeme yokusetshenziswa kwamandla ehlobo lika-2020, umthamo omkhulu wesekethe emfishane wezinye iziteshi ezincane ezindaweni zokusebenza ze-State Grid kanye ne-China Southern Power Grid izofinyelela noma idlule ku-63 Ka.Ngokusho kwezibalo ze-State Grid Corporation yaseChina, eminyakeni yamuva nje, phakathi kokwehluleka kwe-330kV nangaphezulu kwe-UHV substation imishini endaweni yebhizinisi lenkampani, ngokusho kohlobo lwemishini, ukuhamba kwephutha okubangelwa igesi ehlanganisiwe yensimbi ehlanganisiwe ( I-GIS) kanye nemishini yokusabalalisa eyingxubevange (HGIS) ilinganiselwa ku-27.5%, ama-circuit breaker angu-16.5%, ama-transformer kanye nama-transformers amanje angu-13.8%, amathuluzi eSecondary kanye nebhasi kubalwa u-8.3%, i-reactor ibe ngu-4.6%, i- arrester ibalwa ku-3.7 %, isinqamuleli kanye nenduku yombani kubalwe u-1.8%.Kungabonakala ukuthi i-GIS, i-circuit breaker, i-transformer kanye ne-transformer yamanje yimishini eyinhloko ebangela uhambo lwamaphutha, okubalelwa ku-71.6% walo lonke uhambo.
Ukuhlaziywa kwezimbangela zephutha kubonisa ukuthi izinkinga zekhwalithi zokuxhumana, i-bushing nezinye izingxenye kanye nenqubo yokufaka engalungile yizici eziyinhloko eziholela ephutheni le-circuit breaker.Ngesikhathi sokusebenza kwe-SF6 i-circuit breaker izikhathi eziningi, ukuguguleka kwamanje kwe-inrush okuphindwe izikhathi eziningana kunokwamanje okulinganiselwe kanye nokugqokwa komshini phakathi koxhumana nabo be-arc abahambayo nabaqinile kuzodala ukubola kokuxhumana futhi kukhiqize umhwamuko wensimbi, ozolimaza ukusebenza kwe-insulation. igumbi lokucima i-arc.
Phakathi nesikhathi soHlelo Lweminyaka Eyishumi nane, ISifundazwe sase-Qinghai sihlela ukwandisa amandla eziteshi ezincane ezimbili ezingama-500kV ukuze kwenyuswe umthwalo wamanje we-short-circuit usuka ku-63kA okhona uye ku-80kA.Uma impahla ye-circuit breaker ithuthukiswa, umthamo wesiteshi esincane unganwetshwa ngokuqondile, futhi izindleko ezinkulu zokunwetshwa kwesiteshi esincane zingasindiswa.Izikhathi zokuphuka ze-voltage ephezulu kanye ne-breaker circuit umthamo omkhulu zilawulwa ikakhulukazi impilo yokuxhumana kukagesi ku-breaker circuit.Njengamanje, ukuthuthukiswa koxhumana nabo kagesi kuma-high voltage circuit breakers e-China kusekelwe ikakhulukazi emzileni wezobuchwepheshe wezinto ze-copper tungsten alloy.Imikhiqizo yokuxhumana kagesi ye-copper tungsten alloy yasekhaya ayikwazi ukuhlangabezana nezidingo zezicelo zobunjiniyela bamandla kagesi we-ultra-high kanye ne-ultra-high ngokuya ngokumelana ne-arc ablation kanye nokungqubuzana nokumelana nokuguga.Uma sezisetshenziswe ngale kwebanga lempilo yesevisi, zithambekele ekungeneni kabusha, okusongela ngokuqondile ukusebenza kwe-insulation yemishini yamandla futhi kubangela ingozi enkulu efihliwe ekusebenzeni okuphephile kwegridi yamandla.Imikhiqizo yokuxhumana ye-copper tungsten alloy kagesi esenkonzweni inokuguquguquka okuphansi kanye nobude, futhi kulula ukwehluleka nokuphuka ngesikhathi sesenzo, kanye nokuntuleka kokumelana nokukhipha.Phakathi nenqubo ye-arc ablation, ithusi kulula ukuqoqa nokukhula, okuholela ekuhlulekeni kokuqhekeka kokuxhumana.Ngakho-ke, kubaluleke kakhulu ukuthuthukisa ngempumelelo izinkomba zokusebenza ezibalulekile zezinto zokuxhumana zikagesi, njengokumelana nokugqokwa, ukuqhutshwa kwe-conductivity, i-anti welding, i-anti arc erosion, ukunciphisa izinga lokuhluleka kwe-circuit breaker nokugcina ukusebenza kwamandla okuphephile nokuzinzile. igridi.
U-Chen Xin, umqondisi we-Institute of materials, i-Academia Sinica, uthe: "okwamanje, lapho i-short-circuit current yegridi yamandla idlula amandla okuphuka kwe-circuit breaker, i-short-circuit current idlula izinga, elithinta kakhulu. ukuthembeka kokusebenza kwegridi yamandla, futhi ibeka phambili izidingo eziphakeme zomthamo wokuphuka we-circuit breaker kanye nokumelana nokukhishwa kwe-ablation kothintana naye. Ngemuva kokuthi abathintwayo abasensimini benqanyuliwe begcwele ngokugcwele izikhathi eziningi, i-arcing ilimala kabi, ngakho-ke kuyadingeka ukwenza ukunakekelwa okuphelele, okukude kakhulu nokufeza izidingo zamahhala zomjikelezo wempilo wangempela wama-circuit breakers e-SF6. " Uthe ukuguguleka kokuxhumana ikakhulukazi kuvela ezicini ezimbili: eyodwa ukuchithwa i-arc yangaphambi kokuhlukana ngaphambi kokuvala, kanti enye iwukugqokwa komshini ngemva kokuba impahla yokuxhumana ye-arc ithambile ngemva kokukhishwa.Kudingeka ukubeka phambili umzila omusha wobuchwepheshe ukuze kuthuthukiswe ngempumelelo izinkomba zokusebenza ezibalulekile zezinto zokuthintana zikagesi“ Ubuchwepheshe budinga ukuthuthukiswa ngokuqhubekayo futhi busungulwe.Kufanele sibambelele ngokuqinile ezandleni zethu isinyathelo sokuqala."Kusho uChen Xin.
Ngokubhekana nesidingo esiphuthumayo semishini yokudlulisa amandla kazwelonke kanye nenguquko yokuthuthukiswa kwezinto zokuxhumana zikagesi zezingxenye eziyinhloko ze-high-voltage circuit breaker, kusukela ngo-2016, i-Institute of electronic materials entsha ye-Joint Research Institute, I-European Institute, iqembu elihlanganyelwe le-Pinggao namanye amayunithi ahlanganyela ucwaningo lwezobuchwepheshe mayelana nezinto ezintsha zokuxhumana zikagesi ze-graphene eziguquliwe zethusi, futhi kwenziwa ukubambisana kwamazwe ngamazwe kuncike ku-European Institute kanye neYunivesithi yaseManchester, e-UK.Siza ukuthuthukisa ukusebenza kwe-high voltage circuit breaker.
Ithimba lisebenzisana ukuze lixazulule inani lezinkinga zobuchwepheshe
Ukuthuthukiswa kwe-Synergistic kokumelana ne-arc ablation kanye nokungqubuzana nokumelana nokugqoka kuyisihluthulelo sokukhiqizwa okukhulu kokusebenza okuphezulu kokuxhumana kukagesi.Ucwaningo lwezinto zokuxhumana zikagesi ezinama-voltage aphezulu emazweni angaphandle lwaqala ngaphambi kwesikhathi, futhi ubuchwepheshe sebuvuthiwe, kodwa ubuchwepheshe obuyisisekelo buvinjelwe ezweni lethu.Ngokuthembela kumaphrojekthi amaningi esayensi nezobuchwepheshe enkampani, ithimba lephrojekthi, ngokubambisana namandla aphesheya kwe-R & D, ukuqinisekiswa kokuhlolwa kohlobo lweqembu lezimboni kanye nokuboniswa kwezicelo zezinkampani zamandla wesifundazwe, lisungule ithimba elincane lesayensi nezobuchwepheshe "80 "umgogodla njengomzimba oyinhloko.
Amalungu abalulekile eqembu agxila kulayini ongaphambili we-R & D esigabeni se-R & D sendlela yezinto ezibonakalayo kanye nenqubo yokulungiselela;Esigabeni sokukhiqizwa kwecala, inkampani ime kumkhiqizi ukuxazulula izinkinga zobuchwepheshe esizeni, futhi ekugcineni yadlula ebunzimeni bebhalansi phakathi kwezakhiwo ezibonakalayo, ukwakheka, ukwakheka kwenhlangano kanye nenqubo yokulungiselela, futhi yenza impumelelo kubuchwepheshe obubalulekile. wokuthuthukisa ukusebenza kwempahla;Esigabeni sokuhlolwa kohlobo, ngahlala esiteshini seqembu le-Pinggao high voltage test, ngaxoxisana neqembu lesikhungo sobuchwepheshe se-Pinggao kanye nethimba lesiteshi samandla kagesi aphezulu i-R & D izikhathi eziningi, ngalungiswa ngokuphindaphindiwe, futhi ekugcineni ngathola ukweqa okuphakeme ekuphuleni umthamo ophezulu. I-voltage high current circuit breaker impilo kagesi.
Ngemizamo eqhubekayo, ithimba labacwaningi lithole ngempumelelo uhlelo lokubunjwa kwe-graphene esebenza kahle kakhulu eqiniswe ngezinto zokuxhumana zikagesi eziyinhlanganisela yethusi, ephulwe ngobuchwepheshe obubalulekile benqubo yokuklama izinto zokuxhumana zikagesi ze-graphene kanye ne-activation sintering infiltration ukubumba okuhlanganisiwe, futhi yaqaphela imboni. ukulungiswa kwezinto zokuxhumana zikagesi eziyimodeli ehlukahlukene ye-graphene.Ngokokuqala ngqa, ithimba lenze i-graphene modified copper tungsten alloy electrical contact for sulfur hexafluoride circuit breaker ebheke 252kV nangaphezulu.Izinkomba zokusebenza ezibalulekile ezifana ne-conductivity namandla okugoba zingcono kunezo zemikhiqizo esebenzayo, zithuthukisa kakhulu impilo kagesi ye-high-voltage circuit breaker, igcwalise igebe lobuchwepheshe emkhakheni we-graphene modified high-voltage switch switch kagesi , Ithuthukisa ucwaningo oluzimele lwenkampani kanye nezinga lokuthuthukiswa koxhumana nabo bakagesi bamanje kanye nomthamo omkhulu, futhi kusiza ukuqinisekisa ukusebenza okuphephile nokuthembekile kwesistimu yamandla.
Imiphumela yephrojekthi isekela ukwakheka okuzimele kanye nokusetshenziswa kwendawo kwe-circuit breaker
Kusukela mhla zingama-29 kuya zingama-31 kuMfumfu, 2020, ngokohlelo lokuqinisekisa oluphelele olwakhiwe yisikhungo socwaningo esihlanganyelwe kanye neqembu le-Pinggao ngemuva kwezingxoxo eziningi, uhlobo olusha lwekholomu evulekile engu-252kV / 63kA SF6 umahluli wesekethe weqembu le-Pinggao ngokususelwa ekuxhumekeni kukagesi okutholwe ngempumelelo izikhathi ezingama-20. amandla okuphuka ngesikhathi esisodwa.UZhong Jianying, unjiniyela omkhulu weqembu lasePinggao, uthe: "ngokwemibono yeqembu lochwepheshe bokwamukela iphrojekthi, ubuchwepheshe obuphelele bephrojekthi bufinyelele ezingeni elithuthukile lamazwe ngamazwe, futhi izinkomba zobuchwepheshe eziyinhloko zifinyelele ezingeni elihamba phambili emhlabeni jikelele. Kuphela ngo ukwenza impumelelo kubuchwepheshe obuyisisekelo singakwazi ukusiza amabhizinisi kangcono ukulawula izindleko nokuqinisekisa ukuhlinzekwa kwezinto ezibalulekile. Ngokuzayo, kufanele siqhubeke nokuqinisa ucwaningo lobunjiniyela bezinhlelo futhi sikhuthaze ukuguqulwa kwezimboni zezimpumelelo zocwaningo lwesayensi. "
Le mpumelelo isekela ngokuqinile idizayini ezimele, ukuthuthukiswa kanye nokusetshenziswa kwasekhaya kwe-252kV porcelain post circuit breaker enesilinganiso sokuphulwa kwesekethe esifushane esingu-63kA kanye nesilinganiso samanje esingu-6300A eqenjini le-Pinggao.I-252kV / 63kA i-pole break breaker inesidingo esikhulu semakethe nendawo ebanzi ehlanganisayo.Ukuthuthukiswa ngempumelelo kwalolu hlobo lwe-circuit breaker kudlala indima ebalulekile ekuthuthukiseni izimakethe zasekhaya nezangaphandle zama-breaker circuit asekhaya, okulungele ukuthuthukisa amandla e-R & D kanye nezinga lobuchwepheshe lenkampani emkhakheni we-switchgear ephezulu. , futhi inezinzuzo ezinhle zezenhlalo nezomnotho.
Isidingo semakethe sokuthintana nogesi we-high-voltage e-China singamasethi angu-300000 ngonyaka, futhi isamba sokuthengiswa kwemakethe yonyaka sisondele ku-yuan webhiliyoni elingu-1.5.Izinto ezintsha zokuxhumana zikagesi onamandla aphezulu zinamathemba abanzi emakethe ekuthuthukisweni kwesikhathi esizayo kwegridi yamandla.Njengamanje, impumelelo yephrojekthi ifinyelele ukubambisana kanye nenhloso yoguquko ne-Pinggao, i-Xkaii, i-taikai namanye amabhizinisi okushintsha amandla kagesi aphezulu, abeka isisekelo sohlelo lokubonisa okwalandela kanye nokukhushulwa kwezinga elikhulu emkhakheni we-ultra-high voltage kanye ne-ultra- ukuhanjiswa kwamandla kagesi aphezulu kanye noguquko.Ithimba lephrojekthi lizoqhubeka nokugxila emngceleni wamandla namandla isayensi nobuchwepheshe, ngokuqhubekayo liqinisa emisha nokusebenza, futhi liqhubeke nokukhuthaza ucwaningo oluzimele nokuthuthukiswa kanye nokusetshenziswa kwendawo kwezinto eziyinhloko zemishini kagesi ephezulu.
Isikhathi sokuthumela: Jul-08-2021