Bincike Kan Yanayin Tsaki Mai Girma Na Babban Wutar Lantarki10KW Diesel Generator

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Haɗin Wutar Lantarki tsakanin tsaka-tsakin tsaka-tsaki da ƙasa na cibiyar sadarwar rarraba ana kiransa yanayin yanayin ƙasa mai tsaka tsaki, wanda kuma ake kira yanayin aiki mai tsaka tsaki. Wace irin hanyar da aka yi amfani da ita don tsaka tsaki shine matsala mai fadi da fasaha da tattalin arziki. Hanyoyin saukar da ƙasa daban-daban za su yi tasiri kai tsaye da wuce gona da iri, matakin rufewa na kayan aikin lantarki, amincin cibiyar sadarwar wutar lantarki, zaɓi da azancin kariyar gudun ba da sanda, da tsoma bakin layin sadarwa.

1 tsaka tsaki wuri gama gari hanya

Akwai nau'ikan tsarin ƙasa guda huɗu a tsarin wutar lantarki:

(1) Matsakaicin tsaka tsaki yana ƙasa kai tsaye: Matsakaicin tsaka tsaki na babban ƙarfin wutar lantarki AC tsarin wutar lantarki yana ƙasa kai tsaye, lokacin da kuskuren lokaci-lokaci-zuwa-ƙasa ya faru a cikin tsarin, za a samar da gajeriyar da'ira guda-zuwa-ƙasa kuma gajeriyar kewayawa tana da girma sosai, wanda ke da fa'ida sosai ga kariyar relay, rashin kuskure dangane da ƙarfin wutar lantarki na ƙasa ba ya ƙaruwa, ba zai haifar da tsaiko ba.

(2) ARC SUPPRESSION COIL GROUNDING: High Voltage AC Power System tsaka tsaki baka murƙushe coil grounding, tsakanin tsaka tsaki batu da grounding a cikin jerin tare da reactor don kashe capacitive halin yanzu, iyakance lokaci-lokaci grounding kuskure short-kewaye halin yanzu.

(3)ma'anar tsaka-tsakin da aka kafa ta hanyar resistor (babban juriya, ƙananan juriya): Tsarin wutar lantarki na wutar lantarki na AC yana da ƙarfi ta hanyar juriya mai girma a tsaka-tsakin tsaka-tsakin, kuma an haɗa babban juriya a cikin jerin tsakanin tsaka-tsakin tsaka-tsaki da kuma ƙaddamar da ƙasa, gajeren lokaci na halin yanzu na kuskuren ƙaddamarwa guda ɗaya yana iyakance zuwa 5 ~ 20A, tsaka-tsakin tsaka-tsakin tsaka-tsakin tsaka-tsakin wutar lantarki da aka haɗa tare da ƙananan juriya a cikin tsarin wutar lantarki. tsaka-tsaki mai tsaka-tsaki da madaidaicin ƙasa, ɗan gajeren lokaci na halin yanzu na kuskuren ƙasa-lokaci ɗaya yana iyakance zuwa 100 ~ 1000A.

(4)tsaka tsaki mara tushe: Matsayin tsaka tsaki na babban ƙarfin wutar lantarki AC tsarin wutar lantarki ba shi da tushe, ƙayyadaddun ƙayyadaddun ƙayyadaddun lokaci-lokaci na yanzu shine capacitive halin yanzu lokacin da tsarin yana da kuskuren ƙasa-lokaci guda ɗaya, lokacin da yanayin ƙasa na lokaci-lokaci yana ƙarami (ba fiye da 10a) ba, tsarin na iya yin aiki na awanni 1 ~ 2 tare da kuskure, rashin lahani shine lokacin da yanayin ƙasa-lokaci ɗaya ba zai iya faruwa lokacin da ba za a iya lalata ƙasa ba. yana da girma, wanda ke haifar da rata arc over-voltage, yana yin haɗari da kayan aiki, yana lalata rufin har ma yana haifar da gajeren lokaci mai yawa.

1.1 abubuwan da ke shafar zaɓin hanyar ƙasa

Abubuwan da ke tasiri akan zaɓin yanayin ƙasa sune: 1 Amincewar Samar da Wuta; 2 na sirri da Tsaro na Kayan aiki; 3 juzu'i mai yawa; 4 gudun ba da sanda kariya; 5 zuba jari.

1.2 cikakkiyar kwatancen yanayin ƙasa mai tsaka tsaki

Ana nuna cikakken kwatancen yanayin ƙasa na tsaka tsaki na gama gari a cikin Tebura 1.

Table 1 cikakkiyar kwatancen yanayin ƙasa mai tsaka tsaki

2 High Voltage 10KW dizal janareta

Lokacin da tsaka tsaki batu ne ungrounded, idan guda lokaci zuwa kasa laifi yana samuwa a waje da babban ƙarfin lantarki 10 kw dizal janareta, idan capacitance halin yanzu ya fi wani darajar, da kuskure baka ba za a iya kashe da kanta, sau da yawa tare da intermittent baka, da gina-up lokaci samar da kan-voltage, haifar da rufi lalacewa, da kuma janareta za a haši da dumama tsarin da dumama form. na haɗin y. Matsakaicin juriya na ƙarfin lantarki shine sau 1.5 rated irin ƙarfin lantarki, IE 2.6 u lokaci.

Domin tabbatar da aminci aiki na high irin ƙarfin lantarki 10KWdizal janaretatsarin, shi wajibi ne don tabbatar da cewa a kan irin ƙarfin lantarki na mara laifi lokaci ne kasa da 2.6 u lokaci a hali na guda lokaci zuwa kasa laifi na tsarin, da kuma cewa a kan ƙarfin lantarki na mara laifi lokaci ne kasa da 2.6 u lokaci a hali na guda lokaci zuwa kasa laifi na babban ƙarfin lantarki 10KW dizal janareta tsarin, idan babu wani rata baka baka kamata ya zama mafi girma a halin yanzu batu na juriya I. ∑ C, gabaɗaya IR ≥ (1.0 ~ 1.5) I ∑ C, wanda zai iya ƙara ƙaddamar da yawan ƙarfin lantarki fiye da 2.5 u lokaci, lokacin da IR ≥3.0 I ∑ C (ko Xc / r ≥3.0) , na ciki overvoltage suppression, kamar yadda aka nuna a cikin Fig.

High juriya grounding yanayin kawai a lokacin da grounding halin yanzu ne kananan, sakamakon atomatik baka kashe a bayyane yake, kullum zartar da grounding capacitance kasa da 10a high irin ƙarfin lantarki tsarin, da capacitance halin yanzu I ∑ C na 10KW dizal janareta tsarin a Shanghai cibiyar ne 6A.

Ta hanyar nazarin injin janareta tsaka tsaki juriya grounding, domin saduwa da ka'idar da ake bukata na janareta grounding irin, high juriya grounding irin ya kamata a soma a lantarki janareta grounding irin.

Abũbuwan amfãni: 1 don tabbatar da ci gaba da samar da wutar lantarki, lokacin da kuskuren lokaci guda-zuwa-ƙasa ya kasance ƙasa da ƙananan ƙarfin lantarki na 10 kw dizal janareta aminci haƙuri, tare da aikin kuskure (gaba ɗaya 2h) . 2 An danne tazarar ƙarfin ƙarfin wutar lantarki, wanda ke sanya yawan ƙarfin ƙarfin ƙasa da kashi 2.6 u. 3. Kariya mai sauƙi.

RA'AYIN: 1 dace da ƙananan sikelin high-voltage tsarin grounding capacitance halin yanzu (kasa da 10a), iyakance amfani da ikon yinsa. Lokacin da ɗan gajeren kewayawar na'ura mai ba da hanya tsakanin hanyoyin sadarwa ya yi girma, ƙarfin da ke gudana ta hanyar juriya zai haifar da matsalar dumama, kuma juriya za ta ƙone idan lokacin ya yi tsawo.

Hoto na 1 na tsarin impedance da yawan wuce gona da iri

3 Zaɓin juriya na ƙasa mai tsaka tsaki don babban ƙarfin lantarki na 10KW dizal janareta a cibiyar Shanghai

3.1 zaɓi na tsaka tsaki juriya na ƙasa

Kowane kamfani na janaretan dizal 10KW yana da zaɓi daban-daban da hanyoyin sarrafawa don juriya mai tsaka tsaki na dizal 10KW, kuma babu wata ƙa'ida ta ɗaya don wannan a China.

(1)Ana sarrafa yanayin ƙasa a 100 ~ 150A, 10 ~ 30a da 10% na halin yanzu.

(2)mahara 10KW dizal janareta + mahara contactors + daya juriya earthing makirci, da kuma mahara dizal janareta 10KW + mahara contactors + mahara juriya earthing makirci. Tsohon yana da ƙananan farashi da ƙananan yanki, amma tsarin kulawa yana da rikitarwa, na ƙarshe, akasin haka.

(3)akwai da yawa 10KW dizal janareta gudu tare da lamba lamba rufe don sarrafa wurare dabam dabam, kuma akwai da dama contactor rufe tare da wurare dabam dabam mai kula.

Babban ƙarfin ƙarfin wutar lantarki 10 kw dizal janareta tsaka tsaki juriya na ƙasa na cibiyar gaggawa ta Shanghai shine

Saboda haka, 4 sets na 2500kw (jiran ikon) / 10.5 KV, 1 sa na 303 high irin ƙarfin lantarki juriya akwatin da zazzabi ƙararrawa da 4 sets na high irin ƙarfin lantarki AC contactors aka zaba.

4 lissafi na gajeren lokaci na halin yanzu na kuskuren lokaci-zuwa-ƙasa tare da babban juriya

An nuna zane-zane na gajeren zangon na USB tare da kuskuren lokaci-zuwa ƙasa a cikin siffa 2.

Hoto na 2 na ƙirar kebul na gajeren kewayawa na USB tare da kuskuren lokaci-zuwa ƙasa

Gajeren kewayawa na kuskuren lokaci-zuwa-ƙasa tare da cikakkun kayan ƙarfe na kebul shine

ICX shine ƙarfin halin yanzu na layin da aka kayyade, ƙarfin ƙarfin na yanzu na mafi guntu na USB a Cibiyar Shanghai shine 0.15 A, kuma ƙarfin ƙarfin na USB mafi tsayi shine 0.7 a.

5 Laifin kebul ɗin yana wucewa ta juriya juriya RG = (30 ~ 300), kuma gajeriyar kewayawa na kuskuren lokaci-zuwa-ƙasa shine.

Jimlar ɗan gajeren kewaye halin yanzu shine 20.7 a lokacin da lokaci ɗaya zuwa kuskuren ƙasa ya faru a cikin gaggawa babban ƙarfin lantarki 10 kw na'urar janareta na diesel. Matsakaicin yanayin aiki shine

5.2 a kowane ɗayan injinan dizal kw 10 guda huɗu, mafi ƙarancin yanayin aiki shine janareta na diesel kw 310, kowane nauyi na yanzu 6.9 a, baya shafar aikin janareta na diesel kw 10.

5Lissafin sifili na kariya na yanzu don babban juriya na ƙasa da layin sifili na kariya na yanzu don babban akwatin juriya

5.1 Lissafin Idz0x na sifili jerin layukan watsa kariya na yanzu

Saitin kariyar sifili na yanzu shine Idz0x = Kicx bisa ga yanayin ƙarfin halin yanzu na layin kariya.

Ƙarƙashin: K —— Haɗin Amincewa, 4 ~ 5.

Hankali shine: km = ID/IDZ0X ≥2

Km ≥2 don babban kariya da Km ≥1.5 don kariya ta ajiya.

LINE ZERO SEQUENCE CT musayar rabo shine 100/1, Zero Current 1 na yanzu kariyar saitin (gefen na biyu) shineIdz0x=5×0.53/100=0.0265 A

A 0.06 a/0.8 s, hankali shinekm=20.7/(0.06×100)≈3.4≥2

Ƙimar ƙimar sifili na yanzu 2 kariya na yanzu (gefe na biyu) shineIdz0x= 4×0.53/100=0.0212 A

A 0.03/1.6 s, hankali shinekm=11.3/(0.03×100)≈3.8≥2

Idz0R lissafin sifili na yanzu kariya ga 5.2 babban ƙarfin lantarki akwatin juriya

Yana da 1.1 ~ 1.2 sau girma fiye da saita darajar ƙananan kariyar sifili, kuma iyakar lokacin shine 0.3 s.

Sifili jerin CT rabo na babban ƙarfin lantarki juriya akwatin ne 50/5, da kuma darajar sifili halin yanzu 1 na yanzu kariya (na biyu gefe) ne.Idz0R= 1.1×0.06×100/10=0.66 A

A 0.7 a/1.1 s, hankali shinekm=20.7/(0.7×10)≈2.9≥2

Ƙimar ƙimar sifili na yanzu 2 kariya na yanzu (gefe na biyu) shineIdz0R= 1.1×0.03×100/10=0.33 A

A 0.4 a/1.9 s, hankali shineKm = 11.3 / (0.410) ≈2.8≥2 don tabbatar da amincin mutum, ƙarfin lamba ya kamata ya dace da ka'idodin ƙasa: Lokacin da lokacin aikin kariya ya fi 1s, ƙimar ƙarfin lamba shine 50v.

Laifin ma'aunin wutar lantarki shineUgz= IdRjd=20.7×1=20.7V<50V

Daga cikin su, RJD shine ƙimar juriya na ƙasa, ≤1.0.

6 Babban Resistance Grounding Dabarun Aiki

(1)lokacin da kuskure-lokaci-zuwa-ƙasa ya faru a cikin tsarin, ɗan gajeren lokaci yana da ƙanƙanta don faɗakar da zazzabi na akwatin juriya mai ƙarfi, kuma ba ya shafar aikin janareta na diesel 10KW. An haɗa janareta na diesel 10KW huɗu zuwa ƙasa mai tsayin daka a tsaka tsaki.

(2)lokacin da kuskure guda-zuwa-ƙasa ya faru a cikin tsarin, ɗan gajeren lokaci na yanzu ya fi girma, wanda ke sa ƙararrawar akwatin juriya mai ƙarfin lantarki, kuma tsarin kula da janareta na diesel na 10KW yana sarrafa masu haɗin wutar lantarki guda huɗu na AC don yanke babban juriya na ƙasa mai tsaka tsaki, janareta na dizal 10 kw huɗu yana aiki a cikin yanayin tsaka tsaki.

(3)hudu 10KW dizal janareta ana sarrafa a tsaka tsaki batu ungrounded yanayin, da kuma capacitance halin yanzu na tsarin na USB zuwa duniya I ∑ cL da aka lissafta kamar yadda aka nuna a Table 2. Kamar yadda za a iya gani daga tebur 2, da Line capacitance halin yanzu na Shanghai cibiyar ne game da 4A.

Table 2 lissafi na duniya capacitance halin yanzu I ∑ cL na tsarin USB

The capacitance halin yanzu na rarraba hukuma da na USB-to-ƙasa kafa tsarin neI∑c= α(1+β)I∑cL=1.3×(1+15%)×4=6 A

Tsarin tsari shine kamar haka: (1.2 ~ 1.8) a matsayin Coefficient na 'yanci, (15% ~ 20%) a matsayin tasirin tasirin kayan aikin rarraba wutar lantarki.

(4) da hankali na sifili jerin kare halin yanzu (kariyar madadin ≥1.5) ne

km= (I∑c-Icx)/Idz0x=(6-0.53)/3≈1.8≥1.5

(4)Tasirin yanayin aiki mara tushe mara tushe akan janareta dizal 10KW. Matsayin guda ɗaya zuwa laifin ƙasa na yanzu shine 6A, matsakaicin yanayin aiki shine 1.5 a don janareta dizal kw 410kw, kuma mafi ƙarancin yanayin aiki shine 2.0 a don janareta dizal 310kw, baya shafar janaretan dizal 10KW.

7 Tsarin tsari na juriya na ƙasa tsaka tsaki

Babban ƙarfin wutar lantarki na cibiyar gaggawa ta Shanghai 10KW dizal janareta tsaka tsaki mai jujjuya ƙasa an nuna shi a cikin adadi 3.

Hoto 3 babban ƙarfin lantarki na gaggawa 10 kw dizal janareta tsaka tsaki tsarin juyi ƙasa

8. Kammalawa

Babban Voltage 10KW dizal janareta tsaka tsaki ƙasa shine babban kewayon batutuwan tattalin arziki. Kasashe da birane daban-daban a cikin wata ƙasa suna da hanyoyi na tsaka tsaki daban-daban, waɗanda galibi suka dogara ne akan ƙwarewar aiki da al'adarsu.