Uma uqhathanisa nesethi ye-MG ne-IGBT, kungani isethi ye-MG ifaneleka kakhulu kumhloli we-power transformer? Obani abahlinzeki abakhulu eShayina nasemhlabeni jikelele?

Umbuzo wakho empeleni uyingxoxo yobuchwepheshe yakudala ezitezi zokuhlola ze-transformer:

Isethi ye-MG (i-Motor-Generator) uma iqhathaniswa ne-IGBT / i-solid-state frequency converter (SFC).

 

Empeleni, izimboni eziningi ezinkulu ze-power-transformer zisathanda amasethi e-MG, ikakhulukazi ekuhlolweni kwe-voltage okubangelwa kanye nokulinganiswa kokulahlekelwa. Ngezansi ukuqhathanisa okusebenzayo okusetshenziswa ezitshalweni ze-transformer.

1. I-MG Set vs IGBT Power Supply yokuhlolwa kwe-Transformer

 

Into	Isethi ye-MG (Ijeneretha Yemoto)	I-IGBT / I-Static Frequency Converter
Ubuchwepheshe	Umshini ojikelezayo (ijeneretha yokushayela kwenjini)	I-inverter kagesi kagesi
Umthamo wamandla	Inkulu kakhulu (i-MVA eminingana kalula)	Kukhulu kodwa kuyabiza kakhulu ngamandla aphezulu kakhulu
Ifomu lamagagasi	Igagasi le-sine elimsulwa kakhulu	Kungaqukatha ama-harmonics okushintsha
Amandla okujikeleza okufushane	Kuqine kakhulu	Kunqunyelwe yizinto zobuchwepheshe
Amandla okulayisha ngokweqile	Kuhle kakhulu	Kunqunyelwe
Ukuthembeka	Kuqine kakhulu	Izwela ukwehluleka kwe-semiconductor
Ukulungiswa	Ukugcinwa kwemishini	Ukunakekelwa okuncane kwemishini
Usayizi	Okukhulu	Incane

 

Amasethi e-MG ahlinzeka ngogesi ozimele kanye ne-voltage/current ezinzile yezinhlelo zokuhlola.

2. Kungani Amasethi e-MG Evame Ukuthandwa Ekuhlolweni Kwe-Power Transformer

 

2.1️⃣ Amandla aqinile okushintsha ijubane kanye nokulayisha ngokweqile

 

Ngesikhathi sokuhlolwa okufana nalokhu:

• Ukuhlolwa kwe-impedance ye-short-circuit
• Ukuhlolwa kokulahlekelwa umthwalo
• Ukuhlolwa kokwenyuka kwezinga lokushisa

 

i-transformer ingadonsa ugesi wesikhashana omkhulu kakhulu.

 

Amasethi e-MG abekezelela lokhu kahle ngenxa yokuguquguquka kwawo, kuyilapho izinhlelo zikagesi-kagesi zingakhubeka noma zinciphise ugesi.

 

 

2.2️⃣ Umthamo wamandla aphezulu (izinga le-MVA)

 

Izimboni ezinkulu ze-transformer zingadinga:

• Ukunikezwa kokuhlolwa kwe-MVA okungu-5–20
• Ngezinye izikhathi i-30 MVA noma ngaphezulu

 

I-MG ibeka isikali kalula ibe namandla amakhulu.

Isibonelo, izinhlelo ze-MG zisetshenziselwa ukuhlola ama-transformer afinyelela ku-315 MVA / 400 kV kwamanye amafektri.

 

Izimpahla zikagesi ze-IGBT kuleli zinga ziyabiza kakhulu futhi ziyinkimbinkimbi.

 

 

2.3️⃣ I-sinusoidal waveform eqinile kakhulu

 

Ukulinganiswa kokulahlekelwa kudinga isimo segagasi esinembile kakhulu:

• Ukuhlolwa kokulahlekelwa okuyinhloko
• Ukuhlolwa kokulahlekelwa umthwalo

 

Amasethi e-MG akhiqiza igagasi le-sine lemvelo elivela kujeneretha ehambisanayo.

 

Izimpahla ze-IGBT zikhiqiza i-PWM waveform futhi zidinga izihlungi, ezingase zisethule ama-harmonics athinta ukunemba kokulinganisa.

 

 

2.4️⃣ Ukuhlukaniswa kukagesi kusuka kugridi

 

Amasethi e-MG ahlinzeka ngokuhlukaniswa komshini phakathi kwegridi nento yokuhlola, okusiza:

• Nciphisa ukuphazamiseka kwegridi
• Thuthukisa ukuzinza kokulinganisa
• Vikela igridi ngesikhathi sokuhlolwa kwamandla aphezulu.

 

 

2.5️⃣ Ukukhishwa kwemvamisa ephezulu kokuhlolwa okubangelwayo

 

Ukuhlolwa kwe-voltage okubangelwa yi-power transformer kuvame ukudinga:

• 100 Hz
• 150 Hz
• 200 Hz

 

Amasethi e-MG akhiqiza kalula lokhu ngokushintsha isivinini sejeneretha noma ukucushwa kwepole.

3. Kungani Amanye Amafektri Ethuthela Ezinhlelweni ze-IGBT

 

Naphezu kwezinzuzo ze-MG, izinhlelo zesimanje ze-IGBT / Static Frequency Converter (SFC) ziya ngokuya zithandwa ngoba:

• indawo encane yokunyathela
• ukulawula okuzenzakalelayo
• ukuqalisa okusheshayo
• ukunakekelwa okuncane kwemishini.

 

Zivumela futhi izitezi zokuhlola ezenzakalelayo ngokugcwele kanye nohlelo oluguquguqukayo lwe-voltage/frequency.

 

Amalabhorethri amaningi amasha okuhlola ahlanganisa ubuchwepheshe bobabili.

4. Abaphakeli Abakhulu Bomhlaba Wonke (Izinhlelo Zamandla Okuhlola I-Transformer)

 

Abahlinzeki abaphambili bomhlaba wonke

• I-Siemens Energy - izinhlelo zokuhlola i-transformer ezinkulu
• I-OMICRON Electronics – izinhlelo zokuxilonga nezokuhlola ze-transformer
• Inkampani Yobunjiniyela i-Doble - izixazululo zokuhlola i-transformer ezithuthukisiwe
• I-Megger Group - umenzi wemishini yokuhlola amandla kagesi
• HIGHVOLT Prüftechnik Dresden – high-voltage kanye nemishini yokuhlola ilebhu

 

Lezi zinkampani zihlinzeka kakhulu ngamalabhorethri okuhlola aphelele e-transformer.

5. Abaphakeli Abakhulu BaseShayina (Isethi ye-MG / Izinhlelo Zokuhlola)

 

IShayina inabahlinzeki abaningi bezitezi zokuhlola zefektri ze-transformer.

 

Izihlanganisi zemishini

• I-Shanghai Trihope
• Ukuzenzakalela Kwamandla Kagesi eWuhan Huatian
• Amandla futhi

Lezi zinkampani ngokuvamile zihlinzeka:

• Amasethi e-MG
• izinhlelo zokuhlola ezibangelwa
• izinhlelo zokulinganisa ukulahlekelwa
• amalabhorethri okuhlola aphelele e-transformer.
  
  
  6. Iqiniso Lemboni

   

  Ezindaweni eziningi ezinkulu zezimboni eziguqula amandla (>220 kV):

   

  Ukucushwa okuvamile:

  Ukuhlolwa kwe-MG SET---okubangelwa yi-voltage

  I-MG SET--ukuhlolwa kokulahlekelwa umthwalo

  IGBT/SFC --- Ukunikezwa kwe-Auxiliary variable supply

   

  Ngakho-ke amasethi e-MG asewumgogodla wezitezi zokuhlola ezinamandla aphezulu, kuyilapho izinhlelo ze-IGBT zinikeza ukuguquguquka