Nazarin Kwatanta na SVG da SVC Na’urorin Rarraba Wutar Reactive

1. Hanyoyin Aiki Daban-daban

1.1 SVC za a iya ɗauka a matsayin tushen wutar reactive mai ƙarfi. Dangane da buƙatun haɗin grid, yana iya samar da wutar reactive capacitive zuwa grid ko kuma ya sha wutar reactive inductive da ta wuce gona da iri. Bankunan capacitor, waɗanda galibi ana haɗa su da grid a matsayin bankunan tacewa, suna iya samar da wutar reactive. Lokacin da grid ba ta buƙatar wutar reactive mai yawa ba, wannan wutar reactive capacitive da ta wuce gona da iri ana sha ta ta hanyar reactor a layi daya. Ana sarrafa halin yanzu na reactor ta hanyar ƙungiyar bawul ɗin thyristor. Ta hanyar daidaita kusurwar lokacin kunna thyristor, za a iya canza ƙimar ingancin halin yanzu da ke gudana ta cikin reactor, don haka tabbatar da cewa wutar reactive a wurin haɗin grid na SVC na iya daidaita wutar lantarki a wancan wurin a cikin kewayon da aka kayyade, tare da cimma aikin rama wutar reactive ga grid.

1.2 SVG tana amfani da inverter mai ƙarfin wutar lantarki mai girman ƙarfi a matsayin cibiyarta. Ta hanyar daidaita girman da lokacin wutar lantarki na inverter, ko kuma sarrafa girman da lokacin halin yanzu na gefen AC kai tsaye, tana iya saurin sha ko samar da wutar reactive da ake buƙata, tare da cimma manufar daidaitawar wutar reactive mai sauri da ƙarfi.

2. Gudun Amsawa:

Gudun amsawa na SVC na yau da kullun shine 20-40ms; yayin da gudun amsawa na SVG bai wuce 5ms ba. Wannan yana ba da damar murkushe sauyawar wutar lantarki da fiddar wuta da kyau. A ƙarƙashin ƙarfin rama iri ɗaya, SVG tana ba da mafi kyawun tasirin rama ga sauyawar wutar lantarki da fiddar wuta.

3. Halayen Ƙarƙashin Wutar Lantarki Mai Kyau:

SVG tana da halayen tushen halin yanzu, kuma ƙarfin fitarwarta ba ya shafa sosai da wutar lantarki ta bas. Wannan fa’ida ta sa SVG ta yi tasiri sosai ga sarrafa wutar lantarki. Ƙarƙashin wutar lantarki na tsarin, mafi girman buƙatar daidaitawar wutar reactive mai ƙarfi. Kyakkyawan halayen ƙarƙashin wutar lantarki na SVG yana nufin cewa halin yanzu na reactive da take fitarwa ba ya dogara da wutar lantarki ta tsarin, yana ba da damar ɗaukarta a matsayin tushen halin yanzu mai sarrafawa kuma mai tsayayye. Ko da lokacin da wutar lantarki ta tsarin ta ragu, har yanzu tana iya fitar da ƙimar halin yanzu reactive da aka kayyade, tana da ƙarfin wuce gona da iri.

Sabanin haka, SVC tana da halayen nau’in impedance, kuma ƙarfin fitarwarta yana shafa sosai da wutar lantarki ta bas. Ƙarƙashin wutar lantarki na tsarin, ƙarfin fitar da halin yanzu reactive yana raguwa daidai gwargwado, ba ta da ƙarfin wuce gona da iri.

4. Ingantaccen Tsaron Aiki:

SVCs sun dogara da reactors da aka sarrafa ta thyristor da capacitors da yawa don rama wutar reactive, wanda ke sa su kasance cikin saurin kamuwa da haɓakar resonance, yana haifar da hadurran tsaro. Capacitors na SVG, a gefe guda, ba sa buƙatar bankunan tacewa kuma ba sa nuna haɓakar resonance. A matsayin na’urar rama mai aiki ta amfani da IGBTs, SVG tana guje wa resonance kuma tana inganta tsaron aiki sosai.

5. Halayen Harmonic:

SVCs suna amfani da thyristors don sarrafa daidai impedance na asali na reactor, wanda ke sa su kasance cikin saurin kamuwa da harmonics na tsarin kuma suna samar da nasu harmonics. SVGs suna amfani da fasahar gada mai lokaci ɗaya mai matakai uku, suna fitar da sifar wutar lantarki mai matakai 5 a kowane lokaci. Ta amfani da daidaitawar bugun jini na maƙasudin motsi, ba sa shafa sosai da harmonics na tsarin kuma suna iya murkushe su.

6. Ƙananan Sarari

Ga ƙarfin rama iri ɗaya, sararin SVG yana raguwa da 1/2 zuwa 2/3 idan aka kwatanta da SVC. Saboda SVG tana amfani da reactors da capacitors kaɗan fiye da SVC, girman gabaɗaya da sararin na’urar suna raguwa sosai.

A taƙaice, na’urorin rama wutar reactive na SVG suna da fa’idodi kamar gudun amsawa, ƙarancin abun ciki na harmonic, da ƙarfin sarrafa wutar reactive mai ƙarfi, waɗanda zasu iya inganta ingancin wutar lantarki na grid sosai kuma sun zama alkiblar ci gaban fasahar rama wutar reactive.