Fahimtar Girmanin Kirki a Tsarin Karkashin Kirki: Daidaitu vs. Yawanci da Karamin Girmanin da Iya Girma

Dakilin Yadda Aiki Da Tsarin Kirkiya

A cikin tsari na kirkiya, yadda aiki da tsarin kirkiya tana nufin akwai abili ga yin amfani da kimiyyoyi masu ma'adani a duk wurare ba tare da a wajen harkokin yadda ake yi a gaba. A wajen harkokin yadda ake yi, kimiyyoyi na tsari sun zama da kyau; amma, idan yanayi ko harkokin yadda ake yi an samu, zan iya shafi hanyar yadda aiki da tsarin kirkiya zai faru, wanda ya haɗa da gaskiya da ba a zama za su iya gudanar da shi. Yadda aiki da tsarin kirkiya ana iya kasancewa "yadda aiki da tsarin lalacewar."

Idan yadda aiki da tsarin kirkiya ta faru, zan iya haɗa da ci gaba da tsarin kirkiya idan kimiyyoyi na gaba a wurare ba tare da lalacewar ta fito da muhimmanci. Ci gaba da tsarin kirkiya tana nuna hanyar da kimiyyoyi na tsari ke fito a wurare masu muhimmanci, wanda ya haɗa da gaskiya da ba a zama za su iya gudanar da shi. Duk da haka, sunan "yadda aiki da tsarin kirkiya" da "ci gaba da tsarin kirkiya" ana iya amfani da su a matsayin maimaitoci.

Fanin Yadda Aiki Da Tsarin Kirkiya

Yadda aiki da tsarin kirkiya tana fanin da biyu na duka:

• Yadda Aiki Da Tsarin Kirkiya Ta Harshe: Wannan tana nufin abili ga tsarin da ya amfani da kimiyyoyi a gaba a kan harkokin yadda ake yi mai yawa, kamar yanayi a cikin tsari, sauransu ne da kimiyyoyi, ko kuma sauransu ne da lalacewar. Tattaunawa wannan nau'in yadda aiki da tsarin kirkiya tana buƙata da bayyana fannin halitta a tsari zuwa lokacin da za su iya duba haliyar wasu abubuwa kamar on-load tap-changing transformers, generator field controls, da kuma current limiters. Ana iya tattaunawa Yadda Aiki Da Tsarin Kirkiya Ta Harshe tare da amfani da simulations na time-domain na nonlinear da sabbin model na tsari.

• Yadda Aiki Da Tsarin Kirkiya Ta Kadan: Idan tsari a gaba yana da yadda aiki da tsarin kirkiya ta kadan, kimiyyoyi a wurare ba tare da lalacewar ba za su lafiya ko sun zama da kyau a cikin haliyarsu daga baya har shekara. Wannan nau'in tana babbar waɗannan da ake magana a kan haliyarsu da take da gaba, kuma ana iya tattaunawa ta tare da amfani da small-signal system models.

Muhimmiyar Tsarin Kirkiya

Muhimmiyar tsarin kirkiya tana nufin tsarin mai mahimmanci a cikin tsari inda ba za su iya yin amfani da reactive power injection don in yi kimiyyoyi a kan haliyarsu. Idan a tare da wannan tsarin, za su iya yin amfani da reactive power injections don in yi kimiyyoyi a kan haliyarsu a kan tsarin.Amfani da reactive power transfer a kan line na biyu tana nuna hakan:

• idantaccen P = amfani da reactive power per phase

• Vs = sending-end phase voltage

• Vr = receiving-end phase voltage

• X = transfer reactance per phase

• δ = phase angle between Vs and Vr.

Saboda Line ita ce lossless

Ta haramta amfani da reactive power to be constant,

Don amfani da maximum reactive power transfer: δ = 90º, so that as δ→∞

Wannan equation tana nuna yadda ake nuna muhimmiyar tsarin a kurban δ versus Vs, tare da ƙananan da receiving-end voltage tana da gaba.Wannan ƙarin tana iya samun result similar tare da ƙananan da sending-end voltage tana da gaba da kuma treating Vr as a variable parameter when analyzing the system. In this scenario, the resulting equation is

The reactive power expression at the receiving-end bus may be written as

Wannan equation tana nuna muhimmiyar tsarin voltage stability a gaba. Yana nuna cewa, a muhimmiyar tsarin voltage stability, reactive power tana haɗa da infinity. Wannan tana nuna cewa derivative dQ/dVr tana zama zero. Saboda haka, rotor angle stability limit under steady-state conditions tana daidai da muhimmiyar tsarin voltage stability. Duk da haka, muhimmiyar tsarin voltage stability ta gaba tana iya haɗa da load.