I-LOPS ye-MV Bus Overvoltage Protection

Idivayisi ye-LOPS yokucindezela ibhasi ene-voltage ephansi ye-voltage overvoltage ixhunywe ngokuqondile ngokuhambisana nebhasi, isebenzisa ubuchwepheshe obufana nezilawuli ezisheshayo, izilawuli ezingezona umugqa zamandla aphezulu, izinqamuli ze-overvoltage peak, kanye nokucindezelwa kokuhlasela. Ibalwa ngokwesayensi futhi yaklanywa kahle. I-LOPS isebenzisa ngokugcwele izici ezinhle kakhulu ze-volt ampere, umthamo omkhulu oshisayo, kanye nesivinini sokuphendula esisheshayo sezixhumi ze-overvoltage, izinqamuleli ezingezona umugqa, kanye nemishini yokucindezela i-counterattack. Ngokuvamile, ukusetha inani lesenzo se-LOPS izikhathi ezingu-1.2 i-voltage yesigaba sesistimu (engenziwa ngokwezifiso ezimweni ezikhethekile) kungathola imiphumela emihle ngesikhathi sokusebenza.

I-LOPS ixhumeke ngokuqondile ngokuhambisana nebha yebhasi, isebenzisa ubuchwepheshe obufana nezilawuli ezisheshayo, izimelambi ezingezona umugqa zamandla aphezulu, izinqamuli ze-overvoltage peak, kanye nokucindezelwa kokuhlasela. Ibalwa ngokwesayensi futhi yaklanywa kahle. I-LOPS inxephezela ukushiyeka okufana ne-SPD, ukuvikelwa kwe-overvoltage okuhlanganisiwe, nokumuncwa kwamandla okumelana, ukuxazulula ngokuphelele inkinga yokugcwala ngokweqile kubha enkulu ye-voltage emaphakathi.

Xhumana nathi

imininingwane yomkhiqizo

Izici ezisebenzayo

• Ubuchwepheshe bokufanisa i-chip ye-resistor ephezulu yamandla aphezulu

I-resistor engavamile ithatha ubuchwepheshe obuyingqayizivele bokulahla ukushisa kanye nenqubo evalwe ngokugcwele, enemiphumela emihle kakhulu yokukhishwa kokushisa kanye nemiphumela yokuvimbela umswakama, ukusebenza okuzinzile kokusebenza, impilo ende yesevisi, nokuphepha nokuthembeka.

• Ubuchwepheshe bokusika i-overvoltage peak

Lapho i-overvoltage yesikhashana yenzeka ohlelweni, lapho inani eliphakeme le-overvoltage lidlula izikhathi ezingu-1.2 inani eliphakeme le-voltage elilinganiselwe, i-overvoltage peak interceptor ithatha isinyathelo ngokushesha ukuze inqume ikhanda lamagagasi aphezulu, iqinisekise ukusebenza okuphephile kwemishini ehlukahlukene yokulayisha ngaphansi kwebhasi.

• Ubuchwepheshe bokunciphisa ingcindezi yesibili

Ngemva kokusebenza kweyunithi yokunciphisa amandla kagesi yezinga lokuqala, uma amandla kagesi ebhasi asadlula inani elivumelekile elimisiwe, okokusebenza kwe-LOPS kuzofaka i-chopper enamandla kakhulu ukuze kukhawulwe ngokushesha amandla kagesi ebhasi abe izikhathi ezingu-1.2 noma ngaphansi.

• Ubuchwepheshe bokuphendula ngokushesha

Ukubambezeleka kwesenzo kuncane, ileveli yokuqala ayinayo impendulo yokubambezeleka, futhi ileveli yesibili iphendula phakathi kwama-millisecond angu-2. Izici ezinhle zokusabela kwegagasi eliwumqansa, isikhathi esifushane sokuqhuba seziphikisayo ezingaqondile, ukuvikela okusebenzayo, nokusebenza okuhle kokuvikela.

• Overvoltage ukurekhoda ubuchwepheshe

Imishini yokucindezela ibhasi ene-voltage ephansi ye-LOPS ingarekhoda ngokuzenzakalelayo imingcele efana nenani lezenzo, isikhathi sokwenza okuthile, kanye nogesi webhasi phakathi nesenzo, inikeze isisekelo sokuhlaziywa kobuchwepheshe bohlelo.

imininingwane yemikhiqizo

CHA.	Ukucaciswa		Umboshwa	I-TBP	I-LOPS
1	I-voltage yesenzo		2 ~ 3 izikhathi	2 ~ 3 izikhathi	1.25 izikhathi
2	I-voltage esele		4 ~ 6 izikhathi	izikhathi ezingu-3	1.35 izikhathi
3	Melana namandla	6kv	75A/2ms; 40kA/10μs;＜15kJ	400A/2ms; 40kA/10μs;＜15kJ	1kA/2ms; 600kA/10μs; ≥1MJ
		10kV	75A/2ms; 40kA/10μs;＜20kJ	400A/2ms; 40kA/10μs;＜20kJ	2kA/2ms; 1MA/10μs; ≥ 2MJ
		35kV	400A/2ms; 65kA/10μs;＜60kJ	400A/2ms; 65kA/10μs;＜60kJ	10kA/2ms;2MA/10μs; ≥ 75MJ
4	Ingozi		Isimo esingaziwa, qhuma	Isimo esingaziwa, qhuma	Isimo sokusebenza esilawulekayo ngaphandle kokuqhuma
5	Isikhathi sokuphendula		≤50ns	≤50ns	≤50ns
6	Ukuvuza kwamanje		≤1mA	≤1mA	≤1mA
7	Ukusebenza kahle		Umbani overvoltage switching overvoltage	ukushintsha overvoltage Resonance overvoltage	Konke overvoltage