Abubuwan da ke kafin kwaikwayar maimaita uku

Hukuma na inganci don ita ce ta hanyar amfani da turbin masu uku

Turbin masu uku zai iya samun wasu dabi'uwarsa da kuma halayansu mai zurfi a lokacin da ake amfani da su. Don haka, ana yi wasu hukumomin hukuma na inganci don in taimaka cewa an yi rayuwa da tsohon rawa. Wadannan ne mafi yawan hukumomin hukuma na inganci masu turbin masu uku:

Hukuma na gas

Hukuma na gas shine hukuma na inganci da ake amfani don in nuna dabi'uwarsa na gida na turbin da kuma haske kan tasiri. Idan dabi'uwarsa a gida ya haɗa wasu gas ko tasiri ya haɗa, hukuma na gas ya shiga a signal; idan gas yake faruwa sosai, ya shiga a cut-off circuit breaker ta harkokin turbin.

Hukuma na farko da karamin hukuma na current velocity break

Wannan hukuma na inganci shine da ake amfani don in nuna short-circuit bayan turbin winding da lead line, da kuma single-phase grounding short-circuit bayan winding da lead line na system na neutral point direct grounding. Yana iya nemi dabi'uwarsa da kuma shiga a hukuma, cut-off power, da kuma in bincika dabi'uwarsa.

Hukuma na overcurrent

Hukuma na overcurrent shine da ake amfani don in nuna external phase short circuit na turbin, da kuma as backup protection for gas protection and differential protection (ko current current break protection). Wannan hukuma zai iya amfani a matsayin last line of defense idan hukuma na gas da differential protection ba su shiga, wanda yake cut-off power supply da kuma in taimaka cewa ba a lalace turbin ba.

Hukuma na zero sequence current

Hukuma na zero sequence current shine da ake amfani don in nuna external single-phase grounding short circuit na system na high grounding current. Yana nemi abin da yake da zero sequence current, kuma ya shiga a protective action, don in bincika lalace na turbin saboda dabi'uwarsa na ground.

Hukuma na overload

Hukuma na overload shine da ake amfani don in nuna symmetric overload na turbin. Wannan hukuma ya shiga a signal kawai, ba ya cut-off power supply ba, amma ya wara masu aiki cewa turbin yana da overload, kuma yana buƙata in yi adjustment.

Hukuma na overexcitation

Hukuma na overexcitation shine da ake amfani don in bincika lalace na turbin saboda overexcitation. Idan overexcitation na turbin ya kawo ciki limits na allowable, hukuma na overexcitation zai shiga, ya shiga a signal ko trip, kuma ya ɓoye degree na overexcitation.

Hukuma na differential

Hukuma na differential shine hukuma na inganci mai muhimmanci, wanda yake nuna dabi'uwarsa na outlet line, bushing, da kuma internal short circuit na turbin. Wannan hukuma zai iya shiga instantaneously a harkokin circuit breaker ta harkokin turbin, wanda yake da muhimmanci a hukuma na equipment na turbin.

Hukuma na neutral point direct grounding

Idan turbin yana da neutral point direct grounding, idan yake faruwa single phase grounding fault, zai haɗa large short circuit current. Device na ground protection ta nemi zero sequence current, kuma ya shiga a remove fault part a lokacin.

Neutral point ba a ground ko a protect da arc suppression coil ba

Idan turbin yana da neutral point ungrounded ko grounded da arc suppression coil, idan yake faruwa single-phase grounding fault, grounding current yana da kyau, kuma zero-sequence voltage protection ko insulation monitoring device yana da yawa don nemi grounding fault.

Hukuma na temperature

Turbin zai haɗa heat a lokacin da ake amfani da su, da kuma idan temperature yake faruwa sosai, insulation performance da kuma service life na turbin zai canzawa. Gaskiya na hukuma na temperature shine don in monitor temperature change na turbin, da kuma idan temperature yake faruwa da set value, ya shiga alarm signal ko trip, don in bincika lalace na turbin saboda overheating.