HVDC inoshandura chiteshi

Substation, nzvimbo inoshandurwa voltage.Kuti utumire simba remagetsi rinogadzirwa nemagetsi kune imwe nzvimbo iri kure, voltage inofanira

kuwedzerwa uye kuchinjwa kuva high voltage, uye ipapo voltage inofanira kuderedzwa sezvinodiwa pedyo nemushandisi.Iri basa rekukwira nekudonha kwevoltage ndiro

inopedzwa nechiteshi.Chishandiso chikuru cheiyo substation is switch uye transformer.

Maererano nechiyero, zviduku zvinonzi substations.Iyo substation yakakura pane substation.

Substation: kazhinji nhanho-pasi substation ine voltage level pazasi 110KV;Substation: kusanganisira "nhanho-kumusoro uye nhanho-pasi" zviteshi zve

siyana voltage mazinga.

Substation inzvimbo yemagetsi mune yemagetsi system inoshandura voltage, inogamuchira uye inogovera magetsi emagetsi, inodzora kutungamira kwesimba.

inoyerera uye inogadzirisa voltage.Iyo inobatanidza gidhi remagetsi pamatanho ese emagetsi kuburikidza neshanduro yayo.

Iyo substation ndiyo nzira yekushandura ye AC voltage level (yakakwira voltage - yakaderera voltage; yakaderera voltage - yakakwira voltage);Chiteshi chekushandura ndicho

Shanduko pakati pe AC neDC (AC kuenda kuDC; DC kuenda ku AC).

Iyo rectifier chiteshi uye inverter chiteshi cheHVDC kufambisa inonzi inoshandura zviteshi;Iyo rectifier chiteshi inoshandura AC simba kuita DC simba

kubuda, uye inverter chiteshi inoshandura DC simba kudzosera kumagetsi eAC.Kumashure-kumashure-inoshandura chiteshi ndeyekusanganisa rectifier chiteshi uye inverter

chiteshi cheHVDC kufambisa mune imwe chiteshi chekushandura, uye pedzisa maitiro ekushandura AC kuita DC uye ipapo DC kuenda kuAC panzvimbo imwe chete.

Zvakanakira zve converter station

1. Pakutumira simba rimwechete, mutengo wemutsara wakaderera: AC overhead transmission mitsara inowanzoshandisa 3 conductors, nepo DC inongoda 1 (pole pole) kana 2.

(double pole) conductors.Naizvozvo, kufambisa kweDC kunogona kuchengetedza zvinhu zvakawanda zvekutapurirana, asi zvakare kuderedza yakawanda yekufambisa uye yekuisa mutengo.

2. Kuderera kwesimba rinopera simba remutsara: nokuti imwe chete kana maviri kondakita anoshandiswa mumutsara weDC wepamusoro, simba rinoshanda rinorasikirwa iduku uye rine "space charge"

effect.Kurasika kwayo kwekorona uye kupindira kweredhiyo idiki pane iyo yeAC pamusoro mutsara.

3. Inokodzera kutapurirana kwepasi pemvura: pasi pemamiriro akafanana emasimbi asina-ferrous uye insulating zvinhu, iyo inobvumirwa kushanda voltage pasi peDC

inenge 3 nguva yakakwirira kudarika iyo pasi pe AC.Simba rinofambiswa neDC tambo tambo ine 2 cores yakakura kupfuura iyo inofambiswa neiyo AC tambo tambo ine 3.

cores.Panguva yekushanda, hapana magineti induction kurasikirwa.Kana ichishandiswa kuDC, inongori kurashikirwa kweiyo musimboti waya, uye kuchembera kwekudzivirira.

zvakare inononoka, uye hupenyu hwesevhisi hwakareba.

4. Kugadzikana kweSystem: Mune AC transmission system, ese synchronous generator akabatana nemagetsi system anofanira kuchengetedza synchronous operation.Kana iyo DC mutsara

inoshandiswa kubatanidza maviri AC masisitimu, nekuti iyo DC mutsara haina chekuita, iyo iri pamusoro pekugadzikana dambudziko harisipo, ndiko kuti, iyo DC kuendesa haina kuganhurirwa ne.

kureba kwekutapurirana.

5. Inogona kudzikamisa mapfupi emagetsi ehurongwa: kana uchibatanidza maviri AC masisitimu ane AC transmission mitsara, iyo pfupi yedunhu ikozvino ichawedzera nekuda kwe

kuwedzera kwesimba rehurongwa, iro rinogona kudarika kukurumidza-kupwanya kugona kweyekutanga wedunhu breaker, inoda kutsiva nhamba huru yemidziyo uye

kuwedzera mari yakawanda yekudyara.Matambudziko ari pamusoro haapo mukufambiswa kweDC.

6. Fast regulation speed uye kushanda kwakavimbika: DC transmission inogona nyore uye nekukurumidza kugadzirisa simba rinoshanda uye kuona simba rekuyerera reversal kuburikidza ne thyristor converter.

Kana mutsetse webipolar ukagamuchirwa, kana danda rimwe rikakundikana, rimwe danda rinogona kuramba richishandisa pasi kana mvura sedunhu kuti rirambe richiendesa hafu yesimba, izvo zvakare zvinovandudza.

kuvimbika kwekushanda.

Back-to-back converter station

Kudzoka-kumashure-inoshandura chiteshi kune yakanyanya kukosha maficha eyakajairwa HVDC kutapurirana, uye inogona kuona asynchronous grid yekubatanidza.Kuenzaniswa ne

zvakajairwa DC kutapurirana, zvakanakira zvekudzokera-kumashure-kumashure converter station zvakanyanya kusimba:

1. Iko hakuna DC mutsara uye iyo DC side kurasikirwa idiki;

2. Yakaderera voltage uye yakakwira ikozvino maitiro ekushanda inogona kusarudzwa kuDC kudivi kuderedza iyo insulation level ye converter transformer, converter vharafu uye zvimwe zvinoenderana.

midziyo uye kuderedza mutengo;

3. Iyo DC side harmonics inogona kudzorwa zvachose muimba yevhavha pasina kupindira kune midziyo yekukurukurirana;

4. Chiteshi chekushandura hachidi electrode yepasi, sefa yeDC, DC inosunga, DC switch field, DC carrier uye mimwe michina yeDC, nekudaro kuchengetedza mari.

zvichienzaniswa neyakajairwa high-voltage DC transmission.