Phase angle musiyano pakati pemasimba maviri e electromotive

1. Ndeipi misiyano mikuru pakati pekuchinja kwehuwandu hwemagetsi panguva ye system oscillation uye pfupi pfupi?

1) Mukuita oscillation, huwandu hwemagetsi hunotarwa nechikamu chekona musiyano pakati pe electromotive.

mauto ejenareta ari muparallel operation ari pakati nepakati, nepo huwandu hwemagetsi mupfupi wedunhu hunongoerekana hwavapo.

2) Mukati mekuita oscillation, kona iri pakati pemagetsi chero nguva pane gidhi remagetsi inoshanduka nemusiyano we

phase angle pakati pe system electromotive forces, nepo kona iri pakati peazvino nevoltage haina kuchinjika

panguva pfupi yedunhu.

3) Mukati mekuita oscillation, sisitimu yacho inoenzana, saka pane chete zvakanaka zvinotevedzana zvikamu mumagetsi.

huwandu, uye kutevedzana kwakashata kana zero sequence zvikamu zvinozoonekwa muhuwandu hwemagetsi panguva

short circuit.

2. Ndeipi musimboti weiyo oscillation inovharira mudziyo unoshandiswa zvakanyanya mumudziyo wekudzivirira kure parizvino?

Ndeapi marudzi aripo?

Iyo inoumbwa zvinoenderana nekumhanya kwekuchinja kwazvino panguva ye system oscillation uye kukanganisa uye mutsauko wega wega

kutevedzana chikamu.Inowanzo shandiswa ndeye oscillation blocking zvishandiso zvinoumbwa neakaipa kutevedzana zvikamu

kana mafractional sequence increments.

3. Chii chinonzi kugoverwa kwe zero kutevedzana ikozvino kwakabatana kana dunhu diki rikaitika mune isina kwayakarerekera yakananga pasi system?

Kugoverwa kwe zero sequence ikozvino kunongoenderana ne zero sequence reactance yehurongwa.Saizi ye zero

reactance inoenderana nekugona kwegrounding transformer muhurongwa, nhamba uye chinzvimbo chekusarerekera poindi

grounding.Kana iyo nhamba ye transformer neutral point grounding ichiwedzerwa kana kudzikiswa, iyo zero sequence

reactance network ye system ichachinja, nekudaro ichichinja kugoverwa kwe zero sequence ikozvino.

4. Ndezvipi zvikamu zveHF channel?

Iyo inoumbwa neyepamusoro frequency transceiver, yakakwira frequency tambo, yakakwira frequency wave trap, yakasanganiswa sefa, kubatanidza.

capacitor, tambo yekufambisa uye pasi.

5. Ndeupi musimboti wekushanda wechikamu musiyano wepamusoro-frequency kudzivirira?

Kuenzanisa zvakananga chikamu chemazuva ano kumativi ose emutsara wakachengetedzwa.Kana iyo yakanaka nhungamiro yezvino kune rumwe rutivi

inotsanangurwa kuyerera kubva mubhazi kuenda kumutsara, mutsauko wechikamu chezvino pamativi ese ari 180 madhigirii pasi pezvakajairwa.

uye ekunze pfupi redunhu kukanganisa.Panyaya yemukati pfupi redunhu kukanganisa, kana chikamu musiyano pakati electromotive

simba mavector pamativi ese ari maviri anongoerekana aitika, musiyano wechikamu chezvino pamigumo yese iri zero.Naizvozvo, chikamu

hukama hwemagetsi frequency ikozvino inoendeswa kune yakatarisana nekushandisa masaini epamusoro-frequency.The

midziyo yekudzivirira yakaiswa pamativi ese emutsara inoita zvinoenderana neyakagamuchirwa yakakwirira-frequency masaini anomiririra

chikamu chiripo chemativi ese maviri kana chikamu chekona chiri zero, zvekuti vanotyora dunhu kumativi ese vanofamba panguva imwe chete.

nguva, Kuti uwane chinangwa chekukurumidza kukanganisa kubviswa.

6. Chii chinonzi kudzivirira gasi?

Kana iyo transformer ikatadza, nekuda kwekupisa kana kupisa kwearc pane pfupi-circuit point, iyo transformer mafuta vhoriyamu inowedzera,

kudzvinyirirwa kunogadzirwa, uye gasi rinogadzirwa kana kuora, zvichikonzera kuyerera kwemafuta kumhanyira kune muchengeti, chiyero chemafuta.

madonhwe, uye gasi relay contacts dzakabatana, iyo inoshanda pane yedunhu breaker tripping.Kudzivirirwa uku kunonzi kudzivirira gasi.

7. Ndeipi chiyero chekudzivirira gasi?

1) Polyphase pfupi redunhu kukanganisa mu transformer

2) Tendeuka kutenderedza dunhu diki, tendeuka kushandura pfupi dunhu nesimbi musimboti kana yekunze pfupi dunhu

3) .Kukundikana kwepakati

4) Oiri level inodonha kana kubuda

5) Kubata kwakashata kwepombi switch kana kushata waya welding

8. Ndeupi musiyano pakati petransformer differential protection uye gasi kudzivirira?

The transformer differential dziviriro yakagadzirirwa maererano nemusimboti wekutenderera nzira yemazuva ano, nepo iyo

kuchengetedzwa kwegasi kunogadziriswa maererano nemaitiro emafuta uye gasi kuyerera kunokonzerwa nezvikanganiso zvemukati zve transformer.

Nheyo dzadzo dzakasiyana, uye chiyero chekudzivirira chakasiyanawo.Kudzivirirwa kwakasiyana ndiko kudzivirira kukuru

ye transformer nehurongwa hwayo, uye mutsara unobuda zvakare ndiwo chiyero chekudzivirira kwekusiyanisa.Kudzivirirwa kwegasi ndiko kukuru

kudzivirirwa kana kukanganisa kwemukati kwe transformer.

9. Ndeipi basa rekuvhara?

1) Muchiitiko chekutadza kwekanguva kwetambo, magetsi emagetsi achadzoserwa nekukurumidza kuti avandudze kuvimbika kwemagetsi.

2) Kune yakakwira-voltage transmisheni mitsetse ine bilateral magetsi ekupa, kugadzikana kwekushanda kwakafanana kweiyo system kunogona

kuvandudzwa, nokudaro kuvandudza simba rekutapurirana kwetambo.

3) Inogona kururamisa kutsika kwenhema kunokonzerwa nekushata kwedunhu rebreaker mechanism kana relay misoperation.

10. Ndezvipi zvinodikanwa zvinofanira kusangana nemichina yekuvhara zvakare?

1) Kukurumidza kuita uye otomatiki chikamu kusarudzwa

2) Chero kusangana kwakawanda hakubvumidzwe

3) Kugadzirisa otomatiki mushure mekuita

4) .Kugumburwa nemaoko kana kuvhara nemaoko hakuzovharike zvakare kana paine kukanganisa

11. Kuvhara kwakabatanidzwa kunoshanda sei?

Single phase kukanganisa, single-phase reclosing, three-phase tripping after reclocking chisingaperi chikanganiso;Phase to phase kukanganisa

nzendo nhanho nhatu, uye nhanho nhatu dzinopindirana.

12. Kuvhara kwezvikamu zvitatu kunoshanda sei?

Chero rudzi rwemhosho inofamba nhanho nhatu, nhanho-nhatu kuvharika, uye zvachose kukanganisa kunofamba nhanho nhatu.

 
13. Kuvhara kwechikamu chimwe kunoshanda sei?

Kukanganisa kwechikamu chimwe chete, chiitiko chimwe chete chakaitika;Phase to phase kukanganisa, zvisina tsaona mushure mekufamba kwechikamu-nhatu.

 
14. Nderipi basa rekuongorora rinofanira kuitwa kune voltage transformer ichangobva kuiswa mukushanda kana kuwedzeredza

kana yakabatana kune system voltage?

Kuyera chikamu kusvika kuchikamu chemagetsi, zero sequence voltage, voltage yega yega yechipiri mhepo, tarisa kutevedzana kwechikamu

uye danho kutsunga

15. Ndeapi masekete iyo mudziyo wekudzivirira unofanirwa kumira nemagetsi frequency test voltage ye1500V?

110V kana 220V DC dunhu kusvika pasi.

16. Ndeapi masekete iyo mudziyo wekudzivirira unofanirwa kumira nemagetsi frequency test voltage ye2000V?

1) .Yekutanga kusvika pasi redunhu re AC voltage transformer yechishandiso;

2) .Yekutanga kusvika pasi redunhu re AC ikozvino transformer yechishandiso;

3) Backplane mutsara kudunhu repasi remudziyo (kana skrini);

17. Ndeapi masekete iyo mudziyo wekudzivirira unofanirwa kumira nemagetsi frequency test voltage ye1000V?

Peya yega yega yekusangana kune yepasi redunhu inoshanda mu110V kana 220V DC dunhu;Pakati pematanho ega ega, uye

pakati peakasimba uye akamira magumo evanobatika.

18. Ndeapi masekete iyo mudziyo wekudzivirira unofanirwa kumira simba frequency test voltage ye500V?

1) DC logic yedunhu kusvika pasi redunhu;

2) DC logic circuit kusvika kune yakakwirira-voltage circuit;

3) 18 ~ 24V dunhu kusvika pasi ne rated voltage;

19. Rondedzera muchidimbu chimiro cheelectromagnetic intermediate relay?

Iyo inoumbwa nemagetsi emagetsi, coil, armature, kubata, chitubu, nezvimwe.

20. Rondedzera muchidimbu chimiro cheDX chiratidzo chekutumira?

Iyo inoumbwa ne electromagnet, coil, armature, dynamic uye static kubata, chiratidzo bhodhi, nezvimwe.

21. Ndeapi mabasa ekutanga emidziyo yekudzivirira yerelay?

Kana iyo simba system ikatadza, mamwe magetsi otomatiki zvishandiso anoshandiswa kukurumidza kubvisa chikamu chinokanganisa kubva

iyo simba system.Kana mamiriro asina kujairika aitika, zviratidzo zvinotumirwa munguva yekupfupisa kukanganisa kukanganisa, kuderedza

kukanganisa kurasikirwa uye kuve nechokwadi chekushanda kwakachengeteka kwehurongwa.

22. Chii chinonzi kudzivirira kure?

Icho chidziviriro chekudzivirira chinoratidza chinhambwe chemagetsi kubva pakuiswa kwekudzivirira kusvika kune chikanganiso

uye inotara nguva yekuita maererano nechinhambwe.

23. Chii chinonzi high-frequency protection?

Imwe nhanho yekufambisa tambo inoshandiswa seyakakwira-frequency chiteshi kufambisa yakakwira-frequency ikozvino, uye maviri.

hafu seti yedziviriro yemagetsi frequency huwandu hwemagetsi (senge chazvino chikamu, simba rekutungamira) kana zvimwe

huwandu hunoratidzwa pamigumo miviri yemutsara yakabatana sechidziviriro chikuru chemutsara pasina kuratidza

kukanganisa kwekunze kwemutsara.

24. Ndezvipi zvakanakira uye zvakaipira zvekudzivirira kure?

Iyo mukana ndeyekunzwa kwepamusoro, iyo inogona kuve nechokwadi chekuti mutsara wekukanganisa unogona kusarudza kubvisa kukanganisa mune zvakati

nguva pfupi, uye haina kukanganiswa neiyo system yekushandisa maitiro uye fomu yekukanganisa.Kukanganisa kwayo ndeyekuti kana iyo

dziviriro inongoerekana yarasa iyo AC voltage, ichaita kuti dziviriro ishaye basa.Nekuti impedance kudzivirira

inoshanda kana iyo yakayerwa impedance kukosha yakaenzana kana kushoma pane yakatarwa impedance kukosha.Kana voltage kamwe kamwe

inonyangarika, dziviriro ichaita zvisizvo.Nokudaro, matanho anoenderana anofanira kutorwa.

25. Chii chinonzi high-frequency locking directional protection?

Nheyo yekutanga ye-high-frequency blocking directional protection inobva pakuenzanisa magetsi emagetsi

mativi ose emutsara wakadzivirirwa.Apo simba redunhu pfupi pamativi ose maviri rinoyerera kubva mubhazi kuenda kumutsara, kuchengetedzwa

achaita kugumburwa.Sezvo iyo yakakwirira-frequency chiteshi haina ikozvino yakajairika, uye kana kukanganisa kwekunze kuchiitika, rutivi

ine simba rakaipa kutungamira inotumira yakakwira-frequency inovharira masaini kuvhara dziviriro pamativi ese, inonzi

high-frequency blocking directional protection.

26. Chii chinonzi high-frequency blocking distance protection?

High frequency dziviriro ndeye dziviriro yekuona kukurumidza kuita kwemutsara wese, asi haigone kushandiswa seyo

kuchengetedza kuchengetedza kwebhazi uye mitsetse iri pedyo.Kunyangwe kudzivirira chinhambwe kunogona kuita basa rekuchengetedza kuchengetedza kwebhazi

uye mitsetse iri pedyo, inogona kungokurumidza kubviswa kana kukanganisa kunoitika mukati me80% yemitsara.High frequency

kuvharira kureba kuchengetedza kunobatanidza yakakwirira frequency kuchengetedzwa nekudzivirira kwe impedance.Kana pane kukanganisa mukati,

mutsara wese unogona kukurumidza kugurwa, uye basa rekuchengetedza rekuchengetedza rinogona kuridzwa kana paine bhazi uye mutsara wakatarisana.

27. Ndeapi mahwendefa ekudzivirira ekudzivirira anofanira kubviswa panguva yekuongorora nguva dzose yekudzivirira relay

midziyo mufekitari yedu?

(1) Kutadza kutanga kudzvanya ndiro;

(2) Low impedance kuchengetedzwa kwejenareta transformer unit;

(3) Zero kutevedzana ikozvino tambo yekudzivirira kune yakakwira voltage padivi reiyo main transformer;

28. Apo PT inoputika, ndezvipi zvidziviriro zvinodzivirira zvinofanira kubuda?

(1) AVR mudziyo;

(2) Standby simba otomatiki switching mudziyo;

(3) Kurasikirwa kwekudzivirira kwekunakidzwa;

(4) Stator interturn kudzivirirwa;

(5) Dziviriro yakaderera impedance;

(6) Low voltage lockout overcurrent;

(7) Low voltage yebhazi;

(8) Dziviriro kure;

29. Ndedzipi zviito zvekudzivirira zveSWTA zvinokanganisa switch ye41MK?

(1) OXP overexcitation kudzivirira chikamu chetatu chiito;

(2) 1.2 nguva V/HZ kunonoka kwemasekonzi matanhatu;

(3) 1.1 nguva dzeV/HZ kunonoka kwe55 seconds;

(4) ICL instantaneous current limiter inoshanda muzvikamu zvitatu;

30. Ndeipi basa reiyo inrush ikozvino inovharira chinhu chekusiyanisa kudzivirira kweiyo main transformer?

Mukuwedzera kune basa rekudzivirira maloperation ye transformer pasi pe inrush current, inogonawo kudzivirira maloperation

inokonzerwa neazvino transformer saturation kana paine zvikanganiso kunze kwenzvimbo yekudzivirira.