Cikakken na'urar da yake da karamin tashar maza

Tsari na Iya Kula da Turu Mai Duka

Tsarin kula da tsafta kan duka na darajo mai yawa da tsari mai zama a kan duka. Wannan ya ba da adadin kirkiro mai yawa da kula mai gaba-gaban da take da ita a kan duka. Idan wannan adadin ya fi kawo miliyan 10 A a kan hanyar 10 kV, za ta iya magance abin da ba sa shiga kungiyar, wanda ke sakeke da damar kula da take da ita, da kuma in yi karfi a wurare da takardun kula. Don haka, ana bukatar in dogara abin da ke nuna. Idan an sami turmin mai suna Dyn, akwai kyautar dogara abin a fadada neutral point. Amma idan an sami Yd, ana bukatar in bincike neutral point (wanda an yi shi da sabbin turmi).

1 Sabbin Turmai

Sabbin turmai tana da duwa masu muhimmanci: a fadada, ya kunshi neutral point (wanda an yi shi da kyautar dogara abin don in bayyana abin mai gaba-gaban), sannan a fadada biyu, ya kashe aikinsa substation. Kyautar dogara abin sun fi shi da muhimmanci. Kamar yadda ake nuna a Figure 1, a fadada ta yi amfani da Z-connection (don in kamma zero-sequence impedance da kuma in taimakawa bayyana) don in bincike neutral point. Kyautar, wanda ake da ilimin gasar/turns, tana dogara abin mai gaba-gaban (ta hanyar miliyan 5 A) don in bayyana da kula.

Saboda farkon tafkin fadada da fadada biyu, sabbin turmai suna da rarrabe 15% daɗi na sama da alamomin kula da sama da tsari.

2 Sabbin Turmai Masu Uku Muhimmanci

Don in taimakawa tsari da ingantaccen aikin kula, a cikin abubuwan yadda ake amfani da su a waje, ana amfani da neutral coupler (wanda babu fadada biyu) da kyautar dogara abin don in dogara abin. Amma, wasu waɗannan couplers (wanda ake amfani su a cikin turumin mai suna YNd/Yd) suna da muhimmiyar wajen bincike neutral points, amma babu suka ba da suka kashe aiki a kan 400V low-voltage power. Saboda haka, ana bukatar in sanar da sabbin turmai na biyu, wanda ke yin nasarar kosai, karamin lokaci, da kuma yin karfin da ba da danganta.

Don in kammala wannan abu, Kunming Transformer Factory ta gina sabbin turmai masu uku muhimmanci (SJDX - 630/160/10). Tana jami da neutral coupler (wanda babu fadada biyu), kyautar dogara abin, da kuma sabbin turmai na biyu. Tsari na asalin tana nuna a Figure 2.

Wannan sabbin turmai masu uku muhimmanci tana fito a tsakiyar core na limmar biyar. Fadada (da tap changers) da fadada biyu na sabbin turmai masu uku tana fito a limmar uku (karkashin Figure 2), sannan kyautar dogara abin tana fito a wasu biyu (farkon Figure 2). Wannan tsari tana taimakawa in kawo kyautar dogara abin a farkon, wanda ke taimaka in kawo ilimin gasar, amma an buƙata in kawo ilimin gasar da kuma in kawo kyautar dogara abin a cikin tsakiya. Wannan tsari tana koyarwa, koyarwa da kayan aiki, kawo karfin, da kuma in taimakawa bayyana da kula da amfani da microcomputer control.