Ma'aunin ingancin wutar lantarki shine ƙarfin lantarki da mita.Rashin daidaituwar wutar lantarki yana tasiri sosai ga ingancin wutar lantarki.Haɓakawa, raguwa ko asarar lokaci na ƙarfin lantarki na zamani zai shafi amintaccen aiki na kayan aikin grid ɗin wutar lantarki da ingancin wutar lantarki mai amfani zuwa digiri daban-daban.Akwai dalilai da yawa na rashin daidaituwar wutar lantarki a cikin tsarin diyya.Wannan labarin ya gabatar da abubuwan da ke haifar da rashin daidaituwar wutar lantarki dalla-dalla, an yi nazari dalla-dalla, kuma ana nazarin abubuwan da suka faru daban-daban tare da magance su.
Mahimman kalmomi: ƙarfin lantarki tsarin ramuwa;rashin daidaituwa;bincike da sarrafawa
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1 Ƙirƙirar rashin daidaiton ƙarfin lantarki
1.1 The ƙasa capacitance na zamani irin ƙarfin lantarki mara daidaituwa cibiyar sadarwa lalacewa ta hanyar da bai dace diyya digiri da duk baka suppression coils a cikin tsarin ramuwa samar da jerin resonant kewaye da asymmetric irin ƙarfin lantarki UHC a matsayin wutar lantarki, da tsaka tsaki matsawa ƙarfin lantarki ne:
UN=[uo/(P+jd)] · Ux
A cikin dabara: uo shine ma'aunin asymmetry na cibiyar sadarwa, digiri na ramuwa na tsarin: d shine ƙimar damping na cibiyar sadarwa, wanda kusan yayi daidai da 5%;U shine tsarin wutar lantarki na zamani.Ana iya gani daga dabarar da ke sama cewa ƙarami digirin diyya, mafi girman ƙarfin tsaka-tsaki.Domin kiyaye tsaka-tsakin ma'aunin wutar lantarki daga kasancewa mai girma yayin aiki na al'ada, dole ne a kauce wa ramuwa da ramuwa da ramuwa kusa da lokacin aiki, amma a cikin yanayi mai amfani Duk da haka, yana faruwa sau da yawa: ① Digiri na diyya yana da yawa, saboda capacitor halin yanzu da inductance halin yanzu na arc suppression coil IL = Uφ / 2πfL saboda canjin ƙarfin aiki da sake zagayowar, duka IC da IL na iya canzawa, don haka canza tsohuwar digiri na diyya.Tsarin yana gabatowa ko samar da ramuwa.②An dakatar da samar da wutar lantarki.Lokacin da ma'aikacin ya daidaita coil ɗin murɗawar baka, da gangan ya sanya mai canza famfo a cikin wani wuri da bai dace ba, yana haifar da matsananciyar tsaka-tsaki a fili, sannan kuma lamarin rashin daidaituwar wutar lantarki na zamani.③A cikin grid na wutar lantarki da ba a biya ba, wani lokaci saboda tatsewar layi, ko katsewar wutar lantarki saboda iyakancewar wutar lantarki da kiyayewa, ko kuma saboda layin da aka sanya shi a cikin grid ɗin da aka biya diyya, za a sami kusanci ko samar da diyya, wanda hakan ya haifar. cikin tsaka tsaki mai tsanani.Batun yana gudun hijira, kuma rashin daidaiton wutar lantarki yana faruwa.
1.2 Rashin daidaituwar wutar lantarki da ke haifar da katsewar PT a wurin lura da wutar lantarki Halayen rashin daidaituwar wutar lantarki da ke haifar da busa fis na biyu na PT da wuka na farko mara kyau ko aiki mara cikakken lokaci sune;siginar ƙasa na iya bayyana (PT primary disconnection), yana haifar da Alamar wutar lantarki na lokacin da aka katse yana da ƙasa sosai ko kuma babu wata alama, amma babu wani lokacin tashin wutar lantarki, kuma wannan lamarin yana faruwa ne kawai a cikin wani ɗan wuta.
1.3 Ƙimar rashin daidaituwa ta ƙarfin lantarki wanda aka haifar ta hanyar saukowa lokaci-lokaci na tsarin Lokacin da tsarin ya kasance na al'ada, asymmetry yana da ƙananan, ƙarfin lantarki ba shi da girma, kuma yuwuwar tsaka tsaki yana kusa da yuwuwar ƙasa.Lokacin da ƙasan ƙarfe ya faru a wani wuri a kan layi, motar bas ko kayan aiki mai rai, yana da yuwuwar yuwuwar da ƙasa, kuma ƙimar ƙarfin lantarki na matakan al'ada guda biyu zuwa ƙasa yana tashi zuwa ƙarfin lokaci-zuwa-lokaci. yana haifar da matsananciyar tsaka tsaki.Tsayayya da abubuwa daban-daban, Voltages na al'ada na al'ada suna kusa da ko daidai da ƙarfin ƙarfin layi, kuma amplitudes masu mahimmanci iri ɗaya ne.Jagoran wutar lantarki mai matsawa tsaka tsaki yana kan madaidaiciyar layi ɗaya da ƙarfin ƙarfin lokaci na ƙasa, kuma alkiblar tana kishiyarsa.Ana nuna alaƙar phasor a hoto na 2. da aka nuna.
1.4 Rashin daidaituwar wutar lantarki da ke haifar da cire haɗin layi guda ɗaya yana haifar da canjin asymmetric na sigogi a cikin hanyar sadarwa bayan cire haɗin lokaci-ɗaya, wanda ke sa asymmetry ya karu sosai, yana haifar da babban ƙarfin matsawa a tsakar tsaka tsaki na grid na wutar lantarki, wanda ya haifar da kashi uku na tsarin.Rashin daidaita wutar lantarki na ƙasa.Bayan cire haɗin tsarin lokaci-lokaci guda ɗaya, ƙwarewar da ta gabata ita ce ƙarfin wutar lantarki na lokacin da aka cire yana ƙaruwa kuma ƙarfin lantarki na matakan al'ada guda biyu yana raguwa.Duk da haka, saboda bambancin matsayi na cire haɗin kai-ɗaya, yanayin aiki da abubuwan da ke da tasiri, shugabanci da girman ƙarfin maɓalli na tsaka-tsakin tsaka-tsakin yanayi da kuma nunin kowane nau'i na lantarki zuwa ƙasa ba iri ɗaya ba ne;Daidai ko daidai, ƙarfin wutar lantarki na wutar lantarki zuwa ƙasa na lokacin da aka katse yana raguwa;ko kuma ƙarfin lantarki na lokaci na yau da kullun zuwa ƙasa yana raguwa, kuma ƙarfin wutar lantarki na lokacin da aka katse da sauran yanayin al'ada zuwa ƙasa yana ƙaruwa amma amplitudes ba su daidaita ba.
1.5 Rashin daidaituwar wutar lantarki wanda ya haifar ta hanyar haɗakar da wasu tsarin diyya.Layukan biyu na tsarin biyan diyya guda biyu don watsa wutar lantarki suna kusa kusa kuma sassan layi ɗaya suna da tsayi, ko kuma lokacin da aka kafa buɗewar giciye akan sanda guda don ajiya, layin biyu suna haɗuwa a jere ta hanyar ƙarfin da ke tsakanin layin layi ɗaya.resonant kewaye.Rashin daidaiton ƙarfin lantarki na mataki-zuwa ƙasa yana faruwa.
1.6 Matsayin ƙarfin lantarki mara daidaituwa ta hanyar resonance overvoltage Yawancin abubuwan da ba a haɗa su ba a cikin grid ɗin wutar lantarki, kamar su masu canza wuta, na'urar wutar lantarki ta lantarki, da dai sauransu, da abubuwan da ke cikin tsarin suna samar da hadaddun da'irori masu yawa.Lokacin cajin bas ɗin da babu komai a ciki, kowane lokaci na injin lantarki na lantarki da ƙarfin ƙasa na cibiyar sadarwa suna samar da da'irar oscillation mai zaman kanta, wanda zai iya haifar da haɓaka ƙarfin lantarki mai kashi biyu, raguwar ƙarfin lantarki na lokaci ɗaya ko akasin rashin daidaiton ƙarfin lokaci.Wannan ferromagnetic resonance, Yana bayyana ne kawai a kan bas ɗin wuta ɗaya kawai lokacin cajin bas ɗin da ba komai a cikin gidan wuta tare da tushen wutar lantarki na wani matakin ƙarfin lantarki.A cikin tsarin da ke da matakin ƙarfin lantarki, wannan matsalar ba ta wanzu a lokacin da ake cajin babban tashar tashar lantarki ta hanyar babban layin watsa wutar lantarki.Don guje wa bas ɗin caji mara komai, dole ne a caja dogon layi tare.
2 Hukunci da kuma kula da rashin daidaituwar wutar lantarki daban-daban a cikin tsarin aiki
Lokacin da rashin daidaituwar wutar lantarki na zamani ya faru a cikin tsarin aiki, yawancin su suna tare da sigina na ƙasa, amma rashin daidaituwar wutar lantarki ba duka ba ne a ƙasa, don haka bai kamata a zaɓi layin a makance ba, kuma yakamata a yi nazari tare da yanke hukunci daga waɗannan abubuwan:
2.1 Nemo sanadin daga rashin daidaiton kewayon wutar lantarki na zamani
2.1.1 Idan rashin daidaiton ƙarfin lantarki yana iyakance ga wurin sa ido ɗaya kuma babu wani lokacin hawan ƙarfin lantarki, yana haifar da mai amfani da ba shi da martanin asarar lokaci, an cire haɗin naúrar PT.A wannan lokacin, yi la'akari kawai ko kariyar ɓangaren wutar lantarki na iya aiki mara kyau kuma ya shafi ma'auni.Ko dalilin rashin daidaituwa ya kasance saboda rashin daidaiton nauyin haɗin da ke tattare da babban kewayawa, wanda ke haifar da nuni mara daidaituwa, da kuma ko ya faru ne sakamakon gazawar allon nuni.
2.1.1 Idan rashin daidaiton wutar lantarki ya faru a kowane wurin saka idanu na wutar lantarki a cikin tsarin a lokaci guda, ya kamata a duba alamar wutar lantarki na kowane wurin saka idanu.Wutar lantarki mara daidaituwa a bayyane yake, kuma akwai raguwar matakai da haɓakar matakai, kuma alamun kowane wurin saka idanu irin ƙarfin lantarki iri ɗaya ne.Halin da ke haifar da ƙarancin wutar lantarki na iya zama na musamman kamar rashin mu'amalar wutar lantarki ta busbar.Hakanan yana yiwuwa dalilai da yawa sun haɗu tare.Idan ba a iya gano musabbabin matsalar ba, to sai a janye abin da ba a saba ba daga aiki kuma a mika shi ga ma'aikatan kulawa don sarrafa su.A matsayin mai aikawa da mai aiki, ya isa a tantance cewa dalilin rashin daidaituwa ya ta'allaka ne a cikin canjin wutar lantarki na busbar da da'irori masu zuwa, da mayar da wutar lantarkin tsarin zuwa al'ada.Dalilai na iya zama:
① Digiri na diyya bai dace ba, ko daidaitawa da aiki na na'urar kashe baka ba daidai bane.
②Tsarin da ba a biya ba, akwai tafiye-tafiyen haɗari na layi tare da daidaitattun sigogi.
③Lokacin da nauyin ya yi ƙasa, mita da ƙarfin lantarki suna canzawa sosai.
4. Bayan hadarin rashin daidaituwa kamar ƙasa ya faru a wasu tsarin diyya, ana haifar da matsananciyar tsaka-tsaki na tsarin, kuma rashin daidaituwar wutar lantarki da matsalar biyan kuɗi ya haifar.Ya kamata a daidaita darajar diyya.
Don rashin daidaituwar wutar lantarki wanda ya haifar da raguwar layin wutar lantarki a cikin aikin da ba a biya ba, ya zama dole a yi ƙoƙarin canza digiri na diyya da daidaita murhun murhun baka.Lokacin da lodin da ke cikin hanyar sadarwar ya kasance a cikin tudun ruwa, rashin daidaituwar wutar lantarki yana faruwa lokacin da zagayowar da ƙarfin lantarki ya tashi, kuma ana iya daidaita na'urar kashe baka bayan rashin daidaiton ya ɓace a zahiri.A matsayinka na mai aikawa, ya kamata ka ƙware waɗannan halayen don yin hukunci daidai da sauri da magance rashin daidaituwa daban-daban waɗanda ka iya faruwa yayin aiki.Hukunce-hukuncen siffa guda ɗaya yana da sauƙin sauƙi, kuma hukunci da sarrafa ƙarancin wutar lantarki da ke haifar da kuskuren fili na yanayi biyu ko fiye sun fi rikitarwa.Misali, saukowa lokaci-lokaci ko rawa yana sau da yawa tare da busa fis mai ƙarfi da ƙaramar fis ɗin ƙaramar wutar lantarki.Lokacin da fiusi mai ƙarfi ba a cika busa gaba ɗaya ba, ko an aika siginar ƙasa ko a'a ya dogara da ƙimar saitin ƙarfin lantarki na biyu na siginar ƙasa da matakin busa fis.Yin la'akari da ainihin aiki, lokacin da wutar lantarki ba ta da kyau, tsarin na biyu yakan zama mara kyau.A wannan lokacin, ko an aika matakin ƙarfin lantarki da sigina na ƙasa, ƙimar tunani ba ta da girma.Yana da mahimmanci musamman don gano ƙa'idar bincike da magance rashin wutar lantarki mara kyau.
2.2 Yin la'akari da dalilin bisa ga girman rashin daidaituwa na ƙarfin lantarki.Misali, rashin daidaituwar wutar lantarki mai tsanani yana faruwa a kowane tashar sadarwa yayin aikin tsarin, wanda ke nuni da cewa akwai kasa-da-kasa-lokaci-daya ko kuma katsewa lokaci-lokaci a cikin babban layin da ke cikin hanyar sadarwa, kuma kowane wurin lura da wutar lantarki ya kamata a hanzarta bincika.Dangane da alamar wutar lantarki na kowane lokaci, yi cikakken hukunci.Idan ƙasa mai sauƙaƙa ce ta mataki ɗaya, zaku iya zaɓar layin don bincika bisa ƙayyadadden jerin zaɓin layi.Zaži farko daga kanti na tashar wutar lantarki, wato, bayan zaɓin gangar jikin bisa ga ka'idar "tushen farko, sannan tip", sannan zaɓi sashin ƙasa a cikin sassan.
2.3 Yin la'akari da dalilan da suka danganci canje-canjen aiki na kayan aikin tsarin ① Wani rashin daidaituwa yana faruwa a cikin wani lokaci na iska mai sauƙi na uku, kuma ana isar da wutar lantarki na asymmetric.② Layin watsawa yana da tsayi, ɓangaren giciye na madubi ba daidai ba ne, kuma rashin ƙarfi da raguwar ƙarfin lantarki sun bambanta, yana haifar da rashin daidaituwa na kowane lokaci.③ Ana cakude wutar lantarki da hasken wuta da kuma raba, kuma akwai kaya masu yawa na zamani guda daya, kamar kayan aikin gida, tanderun lantarki, injin walda, da dai sauransu sun fi mayar da hankali kan kashi daya ko biyu, wanda hakan ya haifar da rashin daidaito na rarraba wutar lantarki akan kowane. lokaci, yin ƙarfin wutar lantarki da kuma halin yanzu rashin daidaituwa.daidaitawa.
Don taƙaitawa, a cikin aiki na ƙaramin tsarin ƙasa na yanzu (tsarin biyan diyya) wanda aka kafa ta hanyar coil na arc suppression, yanayin yanayin rashin daidaituwa na zamani yana faruwa daga lokaci zuwa lokaci, kuma saboda dalilai daban-daban, digiri da halayen rashin daidaituwa suma. daban.Amma yanayin gaba ɗaya shine grid ɗin wutar lantarki yana gudana a cikin wani yanayi mara kyau, kuma haɓaka, raguwa ko asarar lokaci na ƙarfin ƙarfin lokaci zai shafi amintaccen aiki na kayan aikin grid ɗin wutar lantarki da samar da mai amfani zuwa digiri daban-daban.
Lokacin aikawa: Agusta-29-2022