M'makina aku China a 3-35kV magetsi ndi kugawa, malo ambiri osalowerera ndale amakhala osakhazikika.Malingana ndi miyezo yamakampani a dziko lonse, pamene kukhazikitsidwa kwa gawo limodzi kumachitika, dongosololi likhoza kuyenda molakwika kwa maola a 2, zomwe zimachepetsa kwambiri ndalama zogwiritsira ntchito ndikuwongolera kudalirika kwa kayendedwe ka magetsi ndi kugawa.Komabe, chifukwa cha kuwongolera kosalekeza kwa mphamvu yamagetsi yamagetsi, njira yamagetsi ikusintha pang'onopang'ono kuchokera ku mzere wotumizira kupita ku chingwe cha chingwe, ndipo kutuluka kwaposachedwa kuchokera ku dongosolo kupita ku capacitor yamsewu kudzakhala kwakukulu kwambiri.Dongosolo likakhazikika pagawo limodzi, chitetezo chapano cha capacitor sichapafupi kumveka, ndipo chimasinthidwa kukhala dongosolo lokhazikika lapakati.Kuchulukirachulukira kwa njira yotetezera pansi ndi ferromagnetic parallel resonance overvoltage chifukwa cha overvoltage zitha kuyika pachiwopsezo chachitetezo cha gridi yamagetsi.Kuchulukirachulukira kwa magawo awiri otetezera pansi kumakhala kovuta kwambiri, ndipo kuchuluka kwamphamvu kwa gawo lolephereka kwamakina ndi 3 mpaka 3.5 kuposa ma voltages onse anthawi zonse.Ngati kuwonjezereka kotereku kumachitika pa gridi yamagetsi kwa maola angapo, ndithudi kuwononga kutsekemera kwa zipangizo zamagetsi.Pambuyo pakuwunjikana mobwerezabwereza ndikuwonongeka kwa gawo lotsekera la zida zamagetsi, zingayambitse kufooka kwa gawo lotsekera, kupangitsa kuti pakhale njira yolakwika yachitetezo chamtundu wa insulation, ndikupangitsa ngozi zamitundu iwiri kulephera kwafupipafupi.Kuphatikiza apo, zipangitsanso ngozi zachitetezo monga kulephera kwa kusanjikiza kwa zida zamagetsi (kiyi ndikulephera kwa gawo lotsekera la mota), kuphulika kwa zingwe, emission point PT ya voltage transformer saturation excitation regulator, kuphulika kwa magetsi. high-voltage arrester, etc. Pofuna kuthetsa vuto la overvoltage chifukwa cha nthawi yayitali yamagetsi otetezera nthaka, arc kupondereza koyilo imagwiritsidwa ntchito kubwezera zomwe zilipo panopa za neutralization capacitor, ndi kuthekera kwa chitetezo chodziwika bwino chamagetsi. kuponderezedwa.Cholinga cha njirayi ndikuchotsa photoelectricity.Pakalipano, sizikuwonekeratu kuti arc kupondereza coil palokha ili ndi makhalidwe ambiri, ndipo sangathe kubweza bwino mphamvu ya capacitive, makamaka kuwonongeka kwa zida zamphamvu kwambiri sikungalipidwe mwakufuna kwake.Pamaziko a kafukufuku wasayansi pa mphete zosiyanasiyana zopondereza arc, kampani yathu yapanga zida zopondereza zanzeru za HYXHX.
Kukula kwa kagwiritsidwe kachipangizo kanzeru ka arc kupondereza:
1. Izi zida ndi oyenera 3 ~ 35KV sing'anga voteji mphamvu dongosolo;
2. Chida ichi ndi choyenera pamagetsi opangira mphamvu pomwe malo osalowerera sakhala okhazikika, malo osalowerera amachokera ku arc kupondereza koyilo, kapena malo osalowerera ndale amakhazikitsidwa kupyolera mu kukana kwakukulu.
3. Zidazi ndizoyenera ma gridi amagetsi okhala ndi zingwe monga thupi lalikulu, ma gridi amphamvu osakanizidwa okhala ndi zingwe ndi zingwe zapamwamba monga thupi lalikulu, ndi ma gridi amagetsi okhala ndi zingwe zapamwamba monga thupi lalikulu.
Makhalidwe aumisiri anzeru arc kupondereza chipangizo:
Woyang'anira amatenga zida zinayi za CPU, imodzi yolumikizirana ndi anthu komanso kulumikizana nthawi yeniyeni, imodzi yoyeserera ndi kuwerengera, imodzi yowongolera ma siginecha kuti zitsimikizire kulondola kwa ma siginoloji, ndi imodzi yojambulira zolakwika.
Mapulogalamu apulogalamu:
1. Real-time multitasking operating system (RTOS):
Kukula kwa mapulogalamu kumatengera makina ogwiritsira ntchito nthawi yeniyeni komanso ntchito ya library ya akatswiri amphamvu, ndipo imayang'ana pamadongosolo azinthu zatsiku ndi tsiku, ndipo imachita kugawa kwazinthu, kukonza magwiridwe antchito, kusanja kosiyana ndi ntchito zina molingana ndi ntchito yofunika kwambiri.Zimagwira ntchito modalirika kwambiri ndipo zimatha kugwiritsa ntchito mokwanira magwiridwe antchito a ma processor a digito ndi ma microprocessors.Chilankhulo chofotokozera pakompyuta ndichosavuta kugwiritsa ntchito, chimawerengedwa bwino, ndipo ndichosavuta kukulitsa ndikuyika.
2. Njira yolumikizirana ya MODBUS:
Njira yolumikizirana yokhazikika ya MODBUS imatengedwa kuti ithandizire kupeza makina osiyanasiyana ophatikizika ophatikizika.A osiyana kulankhulana processing microprocessor amasankhidwa kupititsa patsogolo luso kulankhulana processing ndi liwiro kulankhulana.
Chipangizocho chitatsegulidwa, chikhoza kubwezeretsedwa ku malo akutali.
3. Kugwiritsa ntchito DSP yochita bwino kwambiri:
Gawo lachitsanzo ndi kuwerengera limasankha chip TMS320F2812DSP cha TI Company.Kuthamanga kwakukulu mpaka 150MHz.
Malingana ndi mapulogalamu apakompyuta, chizindikiro cha analogi chomwe chimasonkhanitsidwa mu nthawi yeniyeni chikhoza kusinthidwa mofulumira Fourier m'kanthawi kochepa, ndipo mphamvu yamagetsi imatha kupezeka ndikuyesedwa mu nthawi yeniyeni.
4.14-bit ma tchanelo angapo nthawi imodzi yosinthira digito-to-analogi:
Chifukwa makinawa amafunikira kuti akhale ndi sampuli zolondola, AD imasankha ma bits 14.Pali mayendedwe 8 onse.Mizati 4 iliyonse imagwiritsa ntchito zotsatsa nthawi imodzi kuwongolera kulondola kwa kagwiritsidwe ntchito.CLK yakunja ya AD ndi 16M, motero kuonetsetsa kuti sampuli za 64-point ndi kuwerengera zofunikira pazochitika zilizonse za sampuli zathu.
5. Kugwiritsa ntchito zida zotha kusinthika:
Ntchito za zipangizo zachikhalidwe zimayikidwa pa chip chimodzi, chomwe chimachepetsa gawo lapansi ndi chiwerengero cha mapepala, kufupikitsa kutalika kwa basi, kumapangitsa kuti ntchito zotsutsana ndi kusokoneza komanso kudalirika kwa dera zitheke, komanso kusinthasintha nthawi yomweyo.
Pulogalamu yonse yamakina imagwiritsa ntchito awiri ALTERA EPM7128 ngati gawo lamalingaliro a digito.Chip ichi chikhoza kukonzedwanso, chomwe chili ndi zipata 2500 ndi maselo akuluakulu a 128, omwe amatha kukwaniritsa zofunikira zamaganizo ovuta kwambiri.Kugwiritsa ntchito ic yophatikizika kumachepetsa kwambiri kuchuluka kwa zida zodziyimira pawokha zomwe zimafunidwa ndi digito, ndikuwongolera kudalirika ndi chitetezo chadongosolo.
6. Ntchito yojambulira zolakwika:
Chojambulira cholakwika chimatha kujambula mawonekedwe olakwika a 8 mumayendedwe ozungulira, kuphatikiza kumanzere ndi kumanja kwa magawo atatu, voliyumu ya zero-sequence, zero-sequence current, atatu-phase AC contactor and circuit breaker isanachitike komanso pambuyo pake.
7.Mawonekedwe a makina amunthu amatengera chiwonetsero chachikulu cha kristalo wamadzimadzi ndi menyu yathunthu yaku China kuti awonetse kuchuluka kwazomwe zikuchitika m'njira yowonetsera, nthawi yeniyeni komanso yowoneka bwino ya magawo atatu amagetsi, mtengo wamagetsi a zero, ndi zero-gawo pano. mtengo.
Mbali zazikulu za chipangizocho
1. Kuthamanga kwa chipangizochi kumathamanga kwambiri, ndipo kumatha kuchitapo kanthu mwamsanga mkati mwa 30 ~ 40ms, zomwe zimafupikitsa kwambiri nthawi ya arc imodzi yokha;
2. Arc ikhoza kuzimitsidwa mwamsanga chipangizocho chikagwira ntchito, ndipo arc grounding overvoltage ikhoza kuchepetsedwa bwino mkati mwa mzere wamagetsi;
3. Pambuyo pa chipangizocho, lolani kuti capacitive current ya dongosololi ipitirire mosalekeza kwa maola osachepera a 2, ndipo wogwiritsa ntchito amatha kuthana ndi mzere wolakwika atamaliza ntchito yosinthira kutumiza katunduyo;
4. Ntchito yachitetezo cha chipangizocho sichimakhudzidwa ndi kukula ndi mawonekedwe a gridi yamagetsi;
5. Chipangizocho chimakhala ndi ntchito yotsika mtengo, ndipo thiransifoma yamagetsi momwemo imatha kupereka ma voliyumu a metering ndi chitetezo, m'malo mwa zimphona za PTA;
6. Chipangizochi chili ndi kachipangizo kakang'ono kamene kamasankha mzere wapansi, womwe ukhoza kuwongolera kwambiri kulondola kwa kusankha kwa mzere pogwiritsa ntchito zizindikiro za kusintha kwakukulu kwa zero-sequence panopa ya mzere wolakwika isanayambe ndi itatha arc kuzimitsidwa.
7. Chipangizocho chimatengera kuphatikiza kwa odana ndi machulukitsidwe voteji thiransifoma ndi wapadera pulayimale panopa malire resonance eliminator, amene angathe kupondereza ferromagnetic resonance ndi kuteteza bwino kuyang'ana;
8. Chipangizochi chili ndi ntchito ya arc light grounding fault wave kujambula, kupereka deta kwa ogwiritsa ntchito kuti asanthule ngozi.
Zigawo zazikulu za chipangizochi ndi mawonekedwe awo:
1. High-voteji vakuyumu mofulumira contactor JZ ndi ulamuliro gawo kulekana;
Ichi ndi AC kudya zingalowe contactor mwapadera opangidwa ndi kampani yathu kuti akhoza lizilamuliridwa ndi gawo kulekana, ndipo akhoza kuikidwa ntchito padera 8 ~ 12ms.Malekezero ena a vacuum contactor chikugwirizana ndi basi, ndi mapeto ena mwachindunji maziko.Pa ntchito yachibadwa, JZ imatsegulidwa ndi kutsekedwa pansi pa ulamuliro wa microcomputer controller.Mabwalo ogwiritsira ntchito magetsi a vacuum contactors a gawo lililonse amatsekedwa.Gawo lililonse likatseka chipangizo chake choyikira mabasi, magawo awiri enawo sagwiranso ntchito.
Ntchito ya JZ ndikuteteza zida zamakina ku chikoka cha overvoltage mwa kusamutsa mwachangu kuchokera kumtunda wosakhazikika wa arc kupita ku chitsulo chokhazikika chazitsulo pomwe kuyika kwapansi kumachitika mu dongosolo.
2. HYT danga lalikulu kuphulika-umboni kukonza-free overvoltage chitetezo;
Chitetezo cha HYT chopanda kuphulika kopanda kuphulika kopanda mphamvu zambiri chimalepheretsa kuphulika kwa makinawo.Ndilosiyana ndi kapangidwe ka zinc oxide arrester (MOA) ndipo ili ndi izi:
(1) Kuthamanga kwakukulu ndi kuchuluka kwa ntchito;
(2) Njira yolumikizira nyenyezi zinayi imatha kuchepetsa kwambiri kuwonjezereka kwa gawo ndi gawo ndikuwongolera kwambiri kudalirika kwachitetezo;
(3) The high-capacity zinc oxide non-linear resistor ndi kusiyana kotulutsa kumatetezana.Kusiyana kwa kukhetsa kumapangitsa kuti pakhale kuchuluka kwa ZnO kukana kukana ziro, kukana kwa ZnO sikumatsitsa, mawonekedwe osagwirizana ndi kukana kwa ZnO sikubwerera pambuyo poti kukhetsa kutsegulidwa, kusiyana kwa kutulutsa sikugwira ntchito yopondereza arc, ndipo moyo wazinthu umakhala wabwino
(4) Chilolezo cha voltage surge ndi 1, ndipo ma voliyumu ndi kutulutsa ndi ofanana pansi pa ma waveform osiyanasiyana, ndipo sizingakhudzidwe ndi ma waveform osiyanasiyana ogwiritsira ntchito.Mtengo wolondola wachitetezo chokwanira komanso chitetezo chabwino kwambiri
(5) Nthawi yomweyo mtengo wamalipiro ndi kukhetsa uli pafupi ndi voteji yotsala, ndipo palibe chopukutira, chomwe ndi chothandiza kuteteza wosanjikiza wa zida zomangira.
(6) Mapangidwe ake ndi osavuta komanso omveka bwino, voliyumu yake ndi yaying'ono, ndikuyikako ndikosavuta;
Choteteza chopanda kuphulika kwa danga chachikulu chopanda kuphulika ndi choyamba chamtundu wake kuchepetsa kuchuluka kwa mitundu yonse.Pamaso pa AC contactor JZ si adamulowetsa, ndi overvoltage malire mkati chitetezo osiyanasiyana.
3. HYXQ choyambirira chochepetsera ma harmonic eliminator:
HYXQ ndiye chida chopangidwa ndi kampani yathu.Imayikidwa motsatizana pakati pa gawo loyambira lopanda ndale la thiransifoma yamagetsi ndi pansi kuti itseke ferromagnetic mndandanda wa resonance yamagetsi amagetsi ndikuwongolera chitetezo chamagetsi.
Mu ntchito yachibadwa, kukana ndi za 40kΩ, ndi kukana kwa mapiringidzo oyambirira a PT ndi megohm mlingo, kotero izo sizidzakhudza machitidwe osiyanasiyana a PT, ndipo sizidzasintha kwambiri magawo osiyanasiyana a dongosolo.Pamene PT ikugwedezeka, chitsulo chachitsulo chimakhala chodzaza, kukwera kwaposachedwa kwa mphepo yamkuntho kumawonjezeka, ndipo kukana kwa MQYXQ kumakula mofulumira, komwe kumatha kuwononga bwino.
HYXQ ili ndi mawonekedwe osavuta komanso omveka bwino, kulemera kopepuka, kukhazikitsa kosavuta komanso ntchito yodalirika.Imatha kukhalabe ndi kusinthasintha kosalekeza komanso kofulumira kugunda kwapano;kuchulukirachulukira kwa mndandanda wa resonance overvoltage, kufupikitsa kugunda kwapano nthawi yoyeretsa;mankhwalawa akhoza kuchepetsa kuwonjezereka kwadzidzidzi kwa mafunde osangalatsa a mapiritsi oyambirira a thiransifoma yamagetsi, ndikupewa zomwe zikuchitika chifukwa cha mafunde oyambirira a thiransifoma.Zotsatira zake, mphamvu ya kinetic ya wowononga dera sikokwanira kuzimitsa arc pambuyo poti wophwanya dera asakanizidwa, zomwe zimapangitsa kuti pakhale ngozi yachitetezo chamsewu wa basi.
4. Microcomputer wolamulira ZK:
ZK ndiye gawo lofunikira pazida izi.Imazindikira malo olakwika ndi mtundu wa zolakwika (kutsekeka kwa thiransifoma, kuyika zitsulo, ndi kuyika kwa arc) kutengera ma siginecha a Ua, Ub, Uc, ndi U operekedwa ndi thiransifoma yamagetsi, ndikuwongolera kukhudzana ndi vacuum yamphamvu kwambiri m'njira yokonzedweratu. Chithunzi cha JZ.
Kuponderezedwa kwa ana amasiye ndi kusankha mzere kungaphatikizidwe kuti akwaniritse cholinga chogwirizanitsa pakati pa kusankha mzere ndi kusankha mzere.
5. Fuse yochepetsa mphamvu yamagetsi yamakono FU:
FU ndi chitetezo chosungira pazida zonse, zomwe zingapewe vuto la kulephera kwamtundu wamitundu iwiri chifukwa cha zolakwika za waya kapena magwiridwe antchito.Lili ndi izi:
(1) Kuphwanya kwakukulu, mpaka 63KA;
(2) Kuthamanga kwapang'onopang'ono, nthawi yowonongeka ndi 1 ~ 2ms;
(3) Kuchepetsa komwe kulipo ndikosavuta kugwiritsa ntchito, ndipo vuto lanthawi zonse limatha kukhala lochepera 1/5 lachiwopsezo chachikulu chanthawi yayitali;
6. Special voteji thiransifoma PT ndi wothandizira yachiwiri mapiringidzo:
Chipangizochi chimagwiritsa ntchito transfoma yapadera yotsutsana ndi machulukitsidwe.Poyerekeza ndi ma voliyumu wamba wamba, sizingangopereka ma siginecha okhazikika amagetsi pakuyezera ndi kuwongolera, komanso kudziteteza modalirika ku ngozi monga kuwonongeka kwa thiransifoma ndi kupsa mtima komwe kumachitika chifukwa cha kumveka kopanda mzere.
Nthawi yotumiza: Apr-12-2023