Zvishandiso uye Zvinotarisirwa zveHigh Voltage DC Transmission Cable

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Kubva pakuona kwepasi rose, high-voltage DC transmission cable inoshandiswa kune dzinotevera nzvimbo dzakadai seyakareba-yakareba-yakakwirira-inotakura pamusoro pekutakura, kubatanidza grid yemagetsi, uye kure-kure-kure submarine tambo kutapurirana nezvakanakira zviri pachena.

Yekutanga ndeyekureba kwepamusoro mutsara wekufambisa. Maererano nemigumisiro yezvidzidzo zvakakodzera, DC mutsetse wepamusoro kutapurirana kunotanga kutora mukana we 10 mabhiriyoni watts uye 300 makiromita kana kupfuura. Izvi zvinoreva kuti kupfuura 26% yehuwandu hwepasi rose hwekutapurirana hunoshanda kune DC mitsetse yepamusoro.

Yechipiri ndeye submarine cable transmission. Zvidzidzo zvinoratidza kuti chikamu chimwe muzvitatu chepasi rose chepasi rose cheDC chekufambisa mapurojekiti ndeyekutumira tambo dzepasi pemvura.

Chechitatu ndechekudzikamisa pfupi-circuit current. Nenyika uye matunhu ari kuwedzera simba rekutakura, magetsi uye kuvaka grid kunoramba kuchiwedzera, saizi ye AC grid iri kuramba ichikura nekukura, uye kukanganisa-pfupi kunoitika sezvo kukanganisa kuri kuwedzerawo. DC kutapurirana kune mabhenefiti ari pachena mukumisa pfupi-circuit ikozvino uye iri kushandiswa munzvimbo dzakawanda uye dzakawanda.

Seyekuyedza kurwisa mapfupi-sekiti mafungu munzvimbo dzine mitoro yedhorobha, light-weight DC transmission equipment ine mudziyo wekuchinja chikamu inofarirwa zvakanyanya nekuda kweiyo diki tsoka uye nekukurumidza kupindura.

Munzvimbo yekubatanidza grid, kushandiswa kweDc nzira dzakadai seBTB kubatanidza akati wandei madiki, yakazvimirira kushanda masisitimu madiki anogona zvinobudirira kuderedza kukanganisa kupfupi-redunhu mafungu. Zvidzidzo zvakaitwa nenyanzvi dzeJapan pane serial masisitimu muKansai, China, Kyushu, uye Shikoku muJapan vakaratidza kuti kana nzira dzeDC dzichishandiswa kubatanidza Kansai neChina, China kuenda kuKyushu, Kyushu kuna Shikoku, uye Shikoku kuKansai, mapfupi-circuit currents achadzvinyirirwa zvakanyanya uye kutapurirana kubva kudiki masisitimu kuenda kumahombe masisitimu kuchaitwa.

Pamusoro pe, maconverter anoumbwa nemidziyo inochinja anogona kushandiswa kupa simba kune madiki masisitimu akasarudzika senge offshore oiri mapuratifomu uye zvitsuwa.. Mune ramangwana, anogona zvakare kushandiswa mumadhorobha ekugovera magetsi masisitimu kuti awane akagoverwa magetsi masosi akadai semafuta masero uye photovoltaic simba rekugadzira.. A lightweight DC transmission system inonyanya kubatsira kugadzirisa dambudziko rekugadzikana kwekuwana simba rakachena.

Parizvino, kune high-voltage DC transmission projects pamakondinendi mashanu pasi rose, uye dzakatekeshera munzvimbo dzakasimukira munyaya dzeupfumi dzakadai seNorth America neWestern Europe. Sezvo dunhu rekusimudzira hupfumi richienda kuAsia, kune akawanda uye akawanda DC ekufambisa mapurojekiti muChina nenzvimbo dzakatenderedza.

Tsvagiridzo yeChina pane yakakwira-voltage DC kutapurirana yakatanga muma1950s, uye yekutanga thyristor valve simulator yakavakwa muma1960 kuChina Electric Power Research Institute. Kuti udzidze zvirinani high-voltage DC transmission, tambo ye AC cable yakashandurwa kuita a 31 kV DC yekufambisa bvunzo mutsetse muShanghai mukati 1977.

Tsvagiridzo yapfuura yakaisa imwe nheyo yekuvandudza yakakwira-voltage DC kutapurirana muChina. Pakupera kwema1980, China's high-voltage DC transmission research uye budiriro yakaita budiriro ikatanga kukura nekukurumidza. Kupfuurisa 10 DC mapurojekiti ekufambisa aiswa mukushanda. Zvikuru sei, muna Zvita 28, 2009, iyo Yunnan-Guangdong UHV DC yekufambisa purojekiti yakaiswa mukushanda padanda rimwe chete, inova ndiyo yekutanga pasi rose ±800 kV UHV DC kutapurirana chirongwa. Iyi ndiyo yekutanga ±800 kV UHV DC yekufambisa chirongwa munyika. Zvinoratidza kuti tekinoroji yemagetsi nekugadzira michina yeChina yasvika padanho repamusoro repasi rose uye yatora nzvimbo nyowani yepamusoro mumunda wekufambiswa kwemagetsi uye shanduko munyika..

In order to realize China’s “west-east power transmission” strategic plan, China iri kushingaira kusimudzira kuvakwa kwe ± 660 KV, ± 800 KV, uye ± 1000 kV Ultra-high-voltage DC transmission projects.

Nekukurumidza kukura kwesimba idzva uye kuchengetedzwa kwezvakatipoteredza zvinodiwa, China ine kudiwa kwemusika kwakasimba kweDC transmission tekinoroji.

Mune inotevera 20 makore, iyo State Grid Corporation inoronga kuvaka zvinopfuura 40 DC kutumira mapurojekiti, kusanganisira kupfuura 15 UHV DC kutapurirana mapurojekiti.

Maererano nemasangano akakodzera, maererano nemitengo yezvino yemidziyo, iyo yakazara mari mukuvaka yega yega UHV DC yekufambisa chirongwa muChina inopfuura 15 trillion yuan. Pakati pavo, mutengo weUHV DC inoshandura vharafu uye inoshandura iri 1.5 mabhiriyoni kuti 2 trillion yuan, mutengo we flat wave reactor inenge 1 trillion yuan, mutengo wekutonga nekudzivirira system inopfuura 400 mamiriyoni yuan, uye iyo yakazara mutengo we AC munda uye DC munda wakazara seti yemidziyo iri pedyo zvakare 2 trillion yuan. The midziyo mari (kusasanganisa mitsetse neshongwe) kune yega yega UHV DC transmission converter station inenge 8 trillion yuan. DC yekufambisa michina inotarisirwa kusvika pamusika saizi ingangoita 200 mabhiriyoni yuan mune inotevera 20 makore.

Kufambira mberi kwetekinoroji kuri kufambisa kuberekwa kwezvinhu zvitsva uye matekinoroji, uye kushandiswa kwepamusoro-voltage DC transmission teknolojia iri kuwedzera. Dzimwe nzira nyowani dzekugadzira magetsi dzinoda kushandiswa kweDC tekinoroji yekuparadzira. Semuyenzaniso, magetsi anogadzirwa nemagnetic fluid, gasi remagetsi, masero emafuta, uye maseru ezuva anofanirwa kutumirwa kunze mune DC modhi, uye zvidyarwa zvesimba remugungwa zviri mumakungwa ari kure zvinoda kushandisa tambo dzepasi pemvura DC kutumira magetsi kunyika huru. Pamusoro pe, mabhatiri matsva uye superconductors uye mamwe matsva ekuchengetedza simba masisitimu, uye AC simba system yekubatanidza inodiwa kana iyo DC yekufambisa tekinoroji.

Zvinoonekwa kuti pamwe nekuvandudzwa kwemagetsi emagetsi emagetsi, kuvandudzwa kwekombiyuta teknolojia, kubuda kwezvinhu zvitsva zvekufambisa simba nekushandura, uye kuvandudzwa nekushandiswa kwesimba idzva uye rinovandudzwazve, high-voltage DC transmission ichave yakafara application tarisiro.