Transformer Core Yuav Ua Li Cas Txiav Txim, Tshawb Pom, Kev daws teeb meem

 

1. Kev phom sij ntawm cov tub ntxhais ntau lub ntsiab lus hauv av tsis raug

 

Transformer ib txwm ua haujlwm tsis tuaj yeem yog coring multi-point grounding. Transformer ib txwm ua haujlwm nyob rau hauv winding ib ncig ntawm lub hav zoov ntawm alternating magnetic teb, vim electromagnetic induction, high voltage winding, thiab tsawg voltage winding, tsis tshua muaj voltage winding thiab core, core, thiab plhaub ntawm lub hav zoov ntawm parasitic capacitance, them windings yuav los ntawm parasitic capacitance ntawm coupling nyhuv, yog li ntawd cov tub ntxhais ntawm lub hauv av raug tshem tawm muaj peev xwm, vim yog cov tub ntxhais thiab lwm yam hlau Cheebtsam thiab winding ntawm qhov kev ncua deb tsis sib npaug zos rau lub hav zoov ntawm lub Cheebtsam ntawm lub peev xwm sib txawv ntawm ob lub ntsiab lus. muaj peev xwm sib txawv ntawm ob lub ntsiab lus nce mus txog qib uas tsis tuaj yeem ncav cuag thaum muaj peev xwm sib txawv ntawm ob lub ntsiab lus hauv av. Qhov muaj peev xwm sib txawv ntawm ob lub ntsiab lus kom tuaj yeem tawg los ntawm kev rwb thaiv tsev ntawm lawv yuav ua rau lub txim hluav taws xob tawm, qhov paug tawm no tsis sib xws, thiab lub sijhawm ntev ntawm cov roj transformer, thiab cov khoom rwb thaiv tsev muaj kev cuam tshuam tsis zoo.

 

 

Txhawm rau tshem tawm qhov tshwm sim no, cov tub ntxhais thiab lub plhaub tau txuas nrog kev ntseeg siab, yog li nws yog equipotential nrog lub plhaub, tab sis thaum cov tub ntxhais lossis lwm yam hlau muaj ob lossis ntau lub ntsiab lus hauv av, qhov taw tes hauv av yuav tsim lub voj kaw, uas ua rau lub voj voog ncig. , ua rau hauv zos overheating, ua rau cov roj decomposition, rwb thaiv tsev degradation, hnyav burnt core silicon steel ntawv los ntawm lub ntsiab hloov ntawm cov xwm txheej loj, yog li lub ntsiab hloov ntawm cov tub ntxhais yuav tsuas yog me ntsis grounded.

 

2. Core grounding txhaum ua rau

 

Transformer core groundingkev ua txhaum yog cov khoom siv hauv av vim yog cov txheej txheem kev tsim kho tsis zoo thiab tsim los ntawm luv luv Circuit Court; accessories thiab lwm yam tshwm sim los ntawm multi-point grounding; sab laug nyob rau hauv lub ntsiab hloov nyob rau hauv lub hlau txawv teb chaws lub cev thiab cov txheej txheem tseem ceeb tsis zoo burr, xeb, thiab vuam slag thiab lwm yam tshwm sim los ntawm grounding.

 

 

3. Hom kev ua tsis tiav

 

Transformer core hom tsis ua hauj lwm yog cov nram qab no rau:

 

 

(1) Core kov plhaub, kov clamps. Kev txhim kho vim tsis saib xyuas yuav tsis raug thauj mus rau saum lub hau ntawm lub tank nrog cov ntsia hlau ruaj khov tig los yog tshem tawm, ua rau cov tub ntxhais thiab lub plhaub kov; core folder limb phaj kov lub core kem; silicon steel ntawv warping kov cov ntawv tais ceev tseg; core nyob rau hauv daim ntawv tais ceev tseg thiab yoke ntawm cardboard nruab nrab ntawm ko taw tawm, ko taw thiab silicon steel ntawv kov; Qhov ntsuas kub lub rooj zaum ntev ntev nrog cov ntawv tais ceev tseg lossis tus quab, cov tub ntxhais kem kov thiab lwm yam.

 

(2) Los ntawm cov core bolt steel lub rooj npog ntev dhau lawm thiab cov ntawv silicon steel luv luv.

 

(3) Cov khoom txawv teb chaws hauv lub tank, kom cov silicon steel phaj hauv zos luv luv. Xws li Shanxi lub substation ntawm 31500/110 hom fais fab transformer core multi-point grounding, dai npog pom nyob rau hauv cov clamps thiab yoke ntawm ib hnub kov cov ntsia hlau; lwm lub chaw nres tsheb 60000/220 hom fais fab transformer dai npog tshwm sim los ntawm 120mm ntev tooj liab hlau.

 

(4) Cov tub ntxhais rwb thaiv tsev ya raws los yog kev puas tsuaj, xws li hauv qab ntawm qhov tso tawm ntawm sludge thiab noo noo, rwb thaiv tsev tiv thaiv te, clip rwb thaiv tsev, ntaub qhwv hlau rwb thaiv tsev, hlau lub thawv rwb thaiv tsev (daim duab los yog ntoo) ya raws, los yog kev puas tsuaj los ntawm cov tub ntxhais ntawm siab. tiv thaiv multi-point grounding.

 

(5) Submersible roj twj tso kua mis bearing hnav, hlau hmoov rau hauv lub tank, sau nyob rau hauv qab, nyob rau hauv qhov kev txiav txim ntawm electromagnetic gravity los tsim ib tug choj, kom lub qis hlau rail thiab lub ncoo ko taw los yog hauv qab ntawm lub thawv txuas, ua rau nyob rau hauv multi-point grounding.

 

(6) Kev ua haujlwm tsis zoo thiab kev saib xyuas tsis zoo, tsis ua raws li lub sijhawm tu.

 

 

1. Transformer core fault test method

 

(1) Clamp-type ammeter method (kev ntsuas online). Cov tub ntxhais ntawm cov khoom siv hluav taws xob sab nraud nrog cov clamp-hom ammeter txoj kev, tuaj yeem raug, tsis muaj lub zog ntsuas cov tub ntxhais ntau qhov chaw hauv av txhaum. Tsis tu ncua ntsuas cov hmoov lead hauv av txhua txhua xyoo, qhov dav dav tam sim no yuav tsum qis dua 100 mA, thiab yog tias nws ntau dua li tus nqi no, yuav tsum ntxiv dag zog rau kev saib xyuas. Tom qab lub transformer muab tso rau hauv lub lag luam, tsis tu ncua ntsuas ob peb zaug ntawm grounding kab kuj, raws li thawj tus nqi, yog hais tias tus nqi pib nws tus kheej loj, uas yog tshwm sim los ntawm lub transformer nws tus kheej to, thiab tom qab ntawd tus nqi ntsuas tsis txawv ntau npaum li cas. suav hais tias tsis muaj txhaum grounding. Yog tias cov kab hauv av tam sim no ntau dua 1A, thiab piv nrog tus nqi pib nce ntxiv, nws yuav tsis tshua muaj kev tiv thaiv hauv av lossis hlau hauv av txhaum, qhov xwm txheej no yuav tsum tau daws tam sim ntawd.

 

 

(2) Chromatographic tsom xam (them roj). Kev ua piv txwv rau chromatographic tsom xam, yog tias tag nrho cov hydrocarbons tau nce ntau, thiab cov pa roj hauv cov methane, ethylene suav nrog cov khoom tseem ceeb, thaum cov pa roj carbon monoxide thiab carbon dioxide piv nrog qhov kev hloov pauv dhau los tsis loj lossis tsis hloov, tuaj yeem txiav txim siab tias yog hlau liab qab. overheating, tej zaum cov tub ntxhais ntawm cov tub ntxhais multi-point grounding los yog cov tub ntxhais ntawm silicon steel ntawv nyob nruab nrab ntawm ntug ntawm qhov seem ntawm kev puas tsuaj yuav tsum tau soj ntsuam ntxiv. Yog hais tias acetylene tshwm nyob rau hauv tag nrho cov hydrocarbons saum toj no, nws yuav yog ib tug tsis ruaj tsis khov core multi-point grounding uas tshwm sim los ntawm lub sij hawm.

 

(3) Txoj kev tiv thaiv kev tiv thaiv hluav taws xob (kev sim hluav taws xob). Nrog 2500 volts co lub rooj co kev sim cov tub ntxhais thiab lub plhaub tsis kam, rwb thaiv tsev nyob rau hauv 200 megohm thiab siab dua, uas cov tub ntxhais rwb thaiv tsev yog qhov zoo. Yog hais tias lub rooj sib txuas qhia tias cov tub ntxhais thiab lub plhaub txuas nrog, tuaj yeem hloov lub ohmmeter los ntsuas qhov kev tiv thaiv ntawm cov tub ntxhais thiab lub plhaub, yog tias ntsuas tus nqi ntawm 200 ~ 400 ohms, cov tub ntxhais muaj kev tiv thaiv siab rau hauv av, xav tau cov tub ntxhais transformer. multi-point grounding txhaum ua.

 

Yog tias qhov ntsuas tus nqi ntau dua 1000 ohms, qhov tam sim no ntws hauv av me me, thiab nws nyuaj rau kev daws teeb meem, tej zaum yuav tsis ua tiav kom khiav mus ntxiv, kev saib xyuas online tsis tu ncua, xws li clamp-hom ammeter txoj kev (nrog rau cov tub ntxhais. ntawm sab nraud leads), roj chromatography tsom, thiab tom qab ntawd daws nrog kev tshawb pom ntawm qhov tsis sib xws. Yog tias qhov ntsuas tus nqi ntawm 1-2 ohms, cov tub ntxhais raug txiav txim siab kom muaj cov hlau hauv av, lub transformer yuav tsum tau ua nrog.

 

2. Transformer core generated multi-point grounding txoj kev kho

 

(1) Cov tub ntxhais muaj cov kab hlau txuas sab nraud, uas tuaj yeem ua rau hauv cov tub ntxhais grounding circuit series tsis kam, txhawm rau txwv cov tub ntxhais hauv av tam sim no, txoj kev no tsuas yog siv los ntsuas kev kub ntxhov.

 

 

(2) Vim yog cov hlau txawv teb chaws lub cev tshwm sim los ntawm cov hauv paus ntsiab lus txhaum cai, qhov xwm txheej dav dav ntawm kev tshuaj xyuas lub hanging npog, tuaj yeem pom.

 

(3) Rau cov tub ntxhais burr, hlau hmoov tsub zuj zuj los ntawm grounding txhaum, nrog capacitive paug cuam tshuam txoj kev, AC arc txoj kev, thiab siab tam sim no txoj kev cuam tshuam nrog cov nyhuv yog pom tseeb dua.

 

 

1. Cov tub ntxhais yuav tsum tiaj tus, tsis muaj qhov tso tawm ntawm cov kua roj vanish zaj duab xis, cov khoom sib dhos zoo sib xws, sab ntawm silicon steel ntawv yuav tsum tsis txhob muaj kev sib tsoo lossis wavy, qhov saum npoo ntawm cov tub ntxhais yuav tsum tsis muaj roj thiab av, thiab impurities, yuav tsum muaj. yuav tsis muaj luv luv-circuiting ntawm daim, sib tshooj phenomenon, qhov sib txawv ntawm cov seams nyob rau hauv txoj kab nrog cov yuav tsum tau.
2. Cov tub ntxhais thiab cov clamps sab saud thiab qis, square hlau, siab phaj, ko taw phaj yuav tsum muaj cov rwb thaiv tsev zoo.
3. Yuav tsum muaj qhov pom tseeb txawm tias qhov sib txawv ntawm cov phaj siab steel thiab cov tub ntxhais; lub phaj siab insulated yuav tsum tau khaws cia kom zoo, tsis muaj kev tawg thiab tawg, thiab muaj kev sib khi kom zoo.
4. Lub steel siab phaj yuav tsum tsis yog ib tug kaw Circuit Court, thiab nyob rau tib lub sij hawm, yuav tsum muaj ib tug point ntawm grounding.
5. Qhib lub clamp sab sauv thiab cov tub ntxhais ntawm cov khoom sib txuas thiab cov phaj siab steel thiab lub siab clamp ntawm cov khoom sib txuas, ntsuas cov tub ntxhais thiab cov clamps sab saud thiab qis thiab cov phaj siab steel thiab cov rwb thaiv tsev ntawm cov tub ntxhais, thiab yav dhau los xeem yuav tsum muab piv nrog tsis muaj kev hloov loj.
6. Bolt fastening, clamping ntawm qhov zoo thiab qhov tsis zoo ntawm cov ntsia hlau ntsia hlau thiab xauv cov txiv ntseej tsis muaj loosening, kev sib cuag zoo nrog lub tshuab ntxhua khaub ncaws, tsis muaj paug paug, tiv thaiv cov ntsia hlau, thiab lub clamp sab saum toj nrog txaus nyob deb.
7. Lub ntsia liaj qhov rooj los ntawm qhov chaw yog nruj, thiab nws cov rwb thaiv tsev tsis muaj qhov pom tseeb hloov pauv piv nrog cov kev xeem dhau los.
8. Cov roj hluav taws xob yuav tsum tsis muaj kev cuam tshuam, thiab cov roj gasket yuav tsum tsis txhob muab tshem tawm lossis thaiv thiab yuav tsum tau npaj kom zoo.
9. Cov tub ntxhais tsuas yog tso cai me ntsis hauv av, ib daim av nrog lub thickness ntawm 0.5 hli, dav tsis tsawg tshaj li 30 hli tooj liab, ntxig rau ntawm 3 ~ 4 theem tub ntxhais, rau qhov loj transformer insertion qhov tob ntawm tsis tsawg tshaj li 80 hli. , nws qhov raug yuav tsum tau qhwv rwb thaiv tsev, tiv thaiv luv luv-circuit core.
10. Yuav tsum tau fastened thiab muaj zog txhua yam, zoo rwb thaiv tsev tsis ua ib lub voj, tsis nyob rau hauv kev sib cuag nrog cov tub ntxhais.
11. Zoo rwb thaiv tsev, thiab txhim khu kev qha grounding.

 

Windutau cog lus los tsim cov khoom siv hluav taws xob zoo transformer, tshwj xeeb tshaj yog pebTransformer Core Grounding Tam sim no Tester, uas yog tsim tshwj xeeb rau kev sim transformer core grounding tam sim no, koj tuaj yeem tuaj tham nrog peb.