Me ke Arcing Ground?

Mai suna Arcing Ground?

Takaitaccen bayani: Arcing ground yana nufin karkashin yanayi da ke faru idan neutral ba a yi tsakiyar kyautar. Wannan matsalolin yana faru a cikin manyan kisan tsohon fasa saboda yanayin capacitance. Yanayin capacitance shine yanayin da ke faru daga masu sarakunan fasa domin faɗiwar voltage. Faɗiwar voltage a cikin capacitances yana nufin faɗiwar fasa. Idan yake samun abu mai yawa, faɗiwar voltage a cikin fasan da aka samu yake zama zero, amma a wasu fassan baki daya, faɗiwar voltage yake ci gaba da kasafin √3.

Matsaloli na Arcing Ground

A cikin kisan tsohon fasa, kowane fasa yana da capacitance zuwa kyautar. Idan yake samun abu a kan fassan bata, yanayin capacitance fault yake faru zuwa kyautar. Idan yanayin fault yake ci gaba da 4-5 amperes, yana iya jin daidai wajen ciyan da arc a ciki na hanyar fault ta maimaita, hatta a baya da aka tabbatar da abin da aka samu.

Idan yanayin capacitance yake ci gaba da 4-5 amperes kuma yake faru a cikin fault, yana shiga da arc a ciki na hanyar fault ta maimaita. Idan an yi arc, faɗiwar voltage a cikin yake zama zero, wanda yake saukarci arc. Duka, potential na yanayin fault yake ci gaba, wanda yake haɗa da ciyan da arc na biyu. Wannan matsalolin na arcing grounding yana nufin ciyan da arc a kan hanyar fault ta maimaita.

Alternating extinction da reignition na yanayin charging da ke faru a cikin arc yana ci gaban potential na wasu fassan uku na da lafiya saboda high-frequency oscillations. Wanannan high-frequency oscillations suka fi shirya a cikin network kuma zai iya shirya surge voltages da suke ci gaba da faɗiwar normal ta sadde. Wannan overvoltages zai iya lalace wasu fassan uku na da lafiya a wurare na system.

Yadda a Gamsar Arcing Ground?

Surge voltage da aka samu saboda arcing ground zai iya gamsar da ita da tunanan arc suppression coil, ko kuma Peterson coil. Tunanan arc suppression coil shine iron-cored tapped reactor da ake fi saka a kan neutral da kyautar.

Reactor a cikin tunanan arc suppression coil yana gamsar da arcing ground ta hanyar counterbalancing yanayin capacitance. Kafin ya fi, Peterson coil yana yi aiki don isole system. Hakan yana iya ba wasu fassan uku na da lafiya da kyau za su iya ci gaban yanayi. Wannan yana ba system da kyau ya zama lafiya har zuwa lokacin da aka tabbatar da fault da aka isolate.