Zuba da Peterson Coil Grounding

An Peterson coil wanda yana da muhimmanci a matsayin reactor da take da iron, ana taka daga neutral ta transformer zuwa ground. Fannoninsa na mafi muhimmanci shine zama current da ke fitowa a cikin gasar da ke fitowa idan an samu fault a cikin line-to-ground. Ana kafa wannan coil da tappings don inganta a kan capacitance characteristics na system. Ana zaba reactance na Peterson coil da kyau domin current da ke gudana tunaye ya kasance da line-charging current da ke fitowa a cikin fault.

A nan, za ka duba cewa an samu fault a cikin line-to-ground (LG) a phase B a point F, kamar yadda aka bayyana a figure. Idan wannan fault yake faru, voltage da ke fitowa a cikin phase B ya koma zuwa zero. A cikin haka, voltages na phases R da Y sun zama da shiga daga fase-voltage values zuwa line-voltage values.

Resultant of ICR and ICY is IC.

Daga phasor diagram

Don balanced conditions

Idan capacitive current IC ce inductive current IL da ke bayarwa daga Peterson coil, current da ke gudana zuwa ground ya zama zero. Saboda haka, chances of arcing grounds, wani abubuwan electric arcing da suka fiye da jiki, ya zama zero. Tun daga mechanism na Peterson coil-based neutral grounding, arc resistance ya zama da daraja mai kadan, wanda ya ba arc ya fi sonon a cikin yawan lokaci. Wannan shine cewa Peterson coil ce ake kira ground-fault neutralizer ko arc-suppression coil. Peterson coil yana da biyu na rating. Zan iya a kafa ita don short-term operation, typically rated to withstand its specified current for approximately 5 minutes. Ko zan iya a kafa ita don carry its rated current continuously. Duk waɗannan, Peterson coil yana da muhimmanci a tsarkar transient faults caused by lightning strikes. Kuma yana sanar da single line-to-ground voltage drops, wanda yake da muhimmanci a kan stability da reliability na system.