Kev Paub Txog Transformer Main Protection thiab Backup Protection

Transformer yog ib qho kev ua haujlwm tas mus li ntawm cov khoom siv zoo li qub, kev ua haujlwm txhim khu kev qha dua, tsawg dua qhov tsis ua tiav. Tab sis vim tias feem ntau ntawm cov transformers tau teeb tsa sab nraum zoov, thiab raug cuam tshuam los ntawm kev ua haujlwm ntawm lub nra hnyav thiab kev cuam tshuam ntawm lub zog fais fab luv luv, thaum lub sijhawm ua haujlwm, muaj txhua yam kev ua yuam kev thiab qhov xwm txheej tsis zoo.

1. Cov kev ua yuam kev thiab qhov tsis zoo ntawm cov transformers

2. Kev teeb tsa ntawm kev tiv thaiv transformer

3. Kev tiv thaiv tsis yog hluav taws xob

(1) Kev tiv thaiv roj

(2) Kev tiv thaiv siab

(3) Kev tiv thaiv kub thiab roj theem

(4) Kev tiv thaiv tag nrho ntawm lub tub yees txias

4. Kev tiv thaiv sib txawv

(1) Magnetizing inrush tam sim no ntawm transformer

(2) Lub hauv paus ntsiab lus ntawm kev txwv tsis pub sib haum xeeb thib ob

(3) Kev tiv thaiv kev tawg sai sib txawv

Qhia luv luv txog kev tiv thaiv tseem ceeb ntawm lub transformer, thiab txuas ntxiv qhia txog kev tiv thaiv thaub qab ntawm lub transformer. Muaj ntau hom kev teeb tsa tiv thaiv thaub qab rau transformers. Nov yog kev qhia luv luv txog ob hom kev tiv thaiv thaub qab, kev tiv thaiv overcurrent thiab kev tiv thaiv grounding ntawm lub transformer.

1. Kev tiv thaiv overcurrent nrog kev rov qhib dua

2. Kev tiv thaiv av ntawm transformer

Qhov kev tiv thaiv thaub qab rau kev ua txhaum luv luv ntawm cov transformers loj thiab nruab nrab feem ntau suav nrog: xoom qhov kev tiv thaiv overcurrent, xoom qhov kev tiv thaiv overvoltage, kev tiv thaiv qhov sib txawv, thiab lwm yam. Cov hauv qab no yog kev qhia luv luv raws li peb txoj kev sib txawv ntawm qhov nruab nrab.

(1) Lub ntsiab lus nruab nrab yog ncaj qha grounded

(2) Lub ntsiab lus nruab nrab tsis tau grounded

(3) Lub ntsiab lus nruab nrab yog grounded los ntawm qhov sib txawv ntawm qhov tawm

Cov transformers ultra-high voltage yog cov transformers semi-insulated, thiab lub rwb thaiv tsev hauv av ntawm lub neutral point coil tsis muaj zog dua li lwm qhov. Lub rwb thaiv tsev neutral point yooj yim tawg. Yog li ntawd, kev tiv thaiv qhov sib txawv yuav tsum tau teeb tsa.

Lub luag haujlwm ntawm qhov kev tiv thaiv qhov sib txawv yog los tiv thaiv kev nyab xeeb ntawm cov khoom siv rwb thaiv tsev ntawm qhov nruab nrab ntawm qhov tsis muaj av ntawm lub transformer.

Qhov kev tiv thaiv qhov sib txawv yog ua tiav los ntawm kev siv qhov sib txawv tam sim no 3I0 ntws los ntawm qhov nruab nrab ntawm lub transformer thiab qhov qhib delta voltage 3U0 ntawm lub busbar PT ua tus qauv.

Yog tias qhov chaw nruab nrab ntawm qhov txhaum nce mus rau qhov chaw, qhov sib txawv tawg thiab qhov sib txawv loj tam sim no 3I0 raug tsim. Lub sijhawm no, qhov kev tiv thaiv qhov sib txawv raug qhib thiab lub transformer raug txiav tawm tom qab kev ncua sijhawm. Tsis tas li ntawd, thaum muaj qhov txhaum hauv av tshwm sim hauv lub kaw lus, qhov chaw nruab nrab raug grounded thiab qhov kev tiv thaiv xoom ntawm lub transformer raug ua haujlwm, thiab qhov chaw nruab nrab raug grounded ua ntej. Tom qab lub kaw lus poob qhov chaw grounding, yog tias qhov txhaum tseem muaj, qhov qhib delta voltage 3U0 ntawm lub busbar PT yuav loj heev, thiab qhov kev tiv thaiv qhov sib txawv kuj tseem yuav ua haujlwm lub sijhawm no.