Abubuwan Bukatun Sauya Wuta Dual Power don Canja Lambar Sanda

Ko ana buƙatar cire haɗin layin tsaka tsaki lokacinsauyawatsakanin samar da wutar lantarki da wutar lantarki ta janareta (ciki har da amfani dabiyu ikon canja wuri atomatik) ya dogara da yawancin yanayi ko dalilai, ciki har da nau'in tsarin ƙasa na madaukai biyu na wutar lantarki, ko madaukai biyu na wutar lantarki suna da alaka da sam.e low-voltage switchboard, da kuma yadda aka saita tsarin ƙasa.Ko da'irar wutar lantarki tana sanye take da RCD ko kariyar kuskuren ƙasa-lokaci ɗaya, da sauransu, lamarin ya fi rikitarwa.Saboda wannan dalili, ƙa'idodin IEC ba sa yin tanadin fayyace.

Bari mu dubi waɗannan tsare-tsare masu ƙarfi biyu daban-daban:

1.Biyu wutar lantarki shigar a wuri guda, da kuma raba gudakaramar hukuma rarraba wutar lantarki, madauki mai shigowa ko iko biyucanja wuriya kamata a yi amfani da madauki4 igiyar canja wuri.

Mu duba Hoto na 1

Hoto 1

Daga FIG.1, zamu iya ganin cewa RCD guda biyu suna da kariya3 pole circuit breakersAn shigar da QF11 da QF21 a gaban ƙarshen kayan lantarki don haɗa wutar lantarki guda biyu.Muna ɗauka cewa an rufe QF11 kuma an kashe QF21.
Za mu iya ganin cewa ko kuskuren ƙasa na lokaci ɗaya ko rashin daidaituwa na uku ya faru a cikin kayan lantarki, ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan ƙaƙƙarfan halin yanzu ko layin tsaka-tsakin da ke haifar da rashin daidaituwa na uku na iya gudana ta hanyar layin N da layin PE na Saukewa: QF21.Saboda kariyar QF21 RCD, QF21 a cikin yanayin aiki na kariya, baya iya rufewa yadda ya kamata.
Kuma akasin haka.A cikin Hoto 1, halin yanzu yana gudana ta hanyar tsaka-tsaki ko layin PE na madauki na QF21 shine layin tsaka-tsakin halin yanzu na hanyar da ba ta al'ada ba.Hanyar da layin tsaka-tsakin halin yanzu na hanyar da ba na yau da kullun ke gudana na iya samar da madauki a lullube, kuma filin maganadisu da aka samar a cikin madauki na iya tsoma baki tare da kayan aikin bayanai masu mahimmanci, kuma a lokaci guda na iya haifar da watsewar kewayawa yin aiki da kuskure.Maganin shine a yi amfani da maɓallin quadrupole don QF11 da QF21 don yanke hanyar da kuskuren halin yanzu ke gudana.

2.Transfomaran da ke rarraba tashoshi biyu sune madaidaitan wutar lantarki, ko kuma taranfoma da injinan dizal su ne madaidaicin wutar lantarki, kuma wuraren tsaka-tsaki na tiranfoma da janareta suna nan kusa.Idan saiti biyu na samar da wutar lantarki suna raba ƙaramin allo mai ƙarancin wuta, madauki mai shigowa yakamata yayi amfani da maɓalli 4, kamar yadda aka nuna a hoto 2.

Hoto 2

Daga Hoto na 2, zamu iya ganin cewa cibiyar sadarwar rarraba ƙarancin wutar lantarki shine nau'in tn-S earthed, kuma tsaka-tsakin tsaka-tsakin na'urar ta atomatik yana ƙasa a kusa, yana jagorantar matakai uku, layin N da layin PE daga mai canzawa zuwa ƙananan ƙarfin lantarki. da'irar shigowar hukuma.Ƙarƙashin ƙarfin wutar lantarki mai shigowa da na'urar bugun busbar maɓallan igiya uku ne.Mai watsewar kewayawa mai shigowa an sanye shi da kariyar kuskuren ƙasa mai mataki ɗaya.

A cikin amfani na yau da kullun, ana rufe mai watsewar kewayawa kuma mashin ɗin a buɗe yake.Lokacin da kuskuren ƙasa guda ɗaya ya faru ga kayan lantarki akan bas ⅰ, zamu iya ganin cewa madaidaiciyar hanyar ita ce kamar haka: harsashi na kayan lantarki → PE waya → mahaɗin waya PE da N waya → sashe ⅰ N waya → Sashe ⅰ gano kuskuren ƙasa na yanzu → Sashe ⅰ transformer.

Wannan hanyar daidai ce.Saboda rashin tabbas na layin N da layin haɗin yanar gizo na PE, alal misali, ana iya shigar da wannan batu a kan madaidaicin layi biyu zuwa layin layi, don haka hanyar da ba ta dace ba na kuskuren ƙasa na lokaci-lokaci na iya zama: shingen kayan aikin lantarki. – PE line – Ⅱ cikin layi, PE line da N line hada site – Ⅱ tsawon layin N – Ⅱ tsawon kasa laifi halin yanzu – Ⅰ lokacin N line – Ⅰ transformer kasa kuskure halin yanzu –> Ⅰ sakin layi.Yanayin da ke gudana a kan wannan hanya shine tsaka-tsakin layi na yau da kullum na hanyar da ba ta dace ba, wanda zai iya haifar da tafiya na ⅱ sashe mai shigowa da'ira mai shigowa, yana sa haɗarin ya girma.

Maganin shine a yi amfani da asaura hududon yanke hanyar da ba bisa ka'ida ba ta hanyar da kuskuren halin yanzu ke gudana tare da kawar da ɓoyayyun haɗarin haɗari.Haka kuma, idan aka maye gurbin daya daga cikin na’urar taransfoma da janareta, to dole ne na’urar da ke shigowa ta janareta ita ma ta yi amfani da maballin quadrupole.Kammalawa: Lokacin da kayan wuta guda biyu ke cikin ɗaki ɗaya (ƙasa) kuma suna raba ƙaramin ƙaramar hukuma mai rarraba wutar lantarki iri ɗaya, layin mashigan madaidaicin wutar lantarki mai ƙarancin wutar lantarki da madauki na bus yana buƙatar amfani da maɓallin sandar sanda 4.

3. Nau'ikan nau'ikan wutar lantarki guda biyu suna cikin ɗaki ɗaya (ƙasa na yau da kullun), amma ba su raba madaidaicin rarraba wutar lantarki, don haka canjin wutar lantarki a cikin kayan rarraba na biyu na iya ɗaukar madaidaicin sandar 3, kamar yadda aka nuna a cikin Hoto 3. .

Hoto 3

FIG.3ATSEzai iya ɗaukar sauyi mataki uku lokacin da yake ajiyar wutar lantarki.Daga Figure 3, za mu iya ganin cewa transformer da janareta suna a cikin wannan ƙananan wutar lantarki tashar rarraba wutar lantarki, amma ba su raba low lantarki rarraba majalisar.Muna ganin rashin daidaituwa na matakai uku a cikin nauyin nauyin QF11 na kayan aikin rarrabawa na biyu, kuma ta haka ne sau da yawa rashin daidaituwa na zamani ya bayyana a cikin tsaka tsaki na kayan lantarki.

Hanya na halin yanzu mara daidaituwa na matakai uku shine kamar haka: layin tsaka tsaki N igiya na kayan lantarki → tsaka tsaki na kayan aikin rarrabawa na sakandare → tsaka tsaki na rarrabawar transfoma → gano kuskuren grounding na yanzu na madauki mai shigowa → tsaka tsaki N na transformer.Wannan hanya ita ce ta al'ada.

TundaATSEba shi da shugabanci a cikin jujjuyawar, yana iya zaɓar tsakanin ciyarwar taswira da ciyarwar janareta, don haka tsaka-tsakin halin yanzu ba ya bayyana a cikin hanyoyin da ba na al'ada ba.A wannan yanayin, ATSE mai sauyawa na iya amfani da samfurin igiya uku.