Conas a bhfeictear Partial Discharge in RMUs go sábháilte

Is déanann iarmhúil insuláide i gcoinneáil leictreacha go hidirghníomhaíonn roinnt fachtóirí. Le linn oibriú, díolann máistreáil insuláide (mar shampla, rian eipóix agus deireadh cabhlach) ar eagla trí chumhacht teoige, leictreacha, agus meicniúla, ag tarlú foraois nó scaraí. Seo sin, is féidir suíomh agus uisce – mar shampla, dusta nó seoid na farraige nó comhshaoil airgid – a mhéadaí an tiomsaíocht ar an taobh amuigh, ag cur tús le coróna dischárgaí nó tracálú ar an taobh amuigh. Mar sin féin, is féidir buille leictreacha, overvoltages switchiúla, nó overvoltages coimeádacha freisin a spreagann dischárgaí ag pointí lag insuláide. Chomh maith leis sin, is féidir obair faoi bhalla tromchúiseach agus cuirtear cainte thar mheán a chur chun cinn, ag cruthú teoige insuláide.

Do ring main units (RMUs), ní féidir éirí as na fachtóirí seo le linn oibriú ginearálta. I gcoiriú, is íseal an cumhacht ó phrionsabalacha dischárgaí agus ní dhéanann sé briseadh insuláide go díreach, ach is féidir leis foraois electromagnetach (mar shampla, interferéad raidió) a chruthú. Ach, más fágtha gan réiteach, is féidir don láithreacht fadtéarmach de shórt dischárgaí a chur chun cinn conséimí níos measa: díolann insuláide agus tionchar teoige a mhéadaíonn an riachtanas, agus in aicmí, is féidir le prionsabalacha dischárgaí a athrú chuig briseadh tríd, ag cur síos ar theicgeolaíocht, cúrsaí leictreacha áitiúla, nó fiú tine agus sprioc. Mar sin, is tábhachtach a bheith ann éifeachtúil a aimsiú agus bearta teicneolaíochta chun phróiseáil RMUs a chosc a chur chun cinn chun oibriú sábháilte agus staidéartha a chinntiú.

Is léiriú agus rá agus imreoirí gníomhach a chur chun cinn abairt teicneolaíochta an-éifeachtach. Iséardóirí UHF (Ultra High Frequency) agus AE (Acoustic Emission) a úsáideann córais monatóireachta ar líne chun siogáil dischárgaí in am réala. Úsáideann computing edge do scuir agus réidhú trodaíochta, in éineach le algoritmi AI chun aitheantas a dhéanamh ar shóirt dischárgaí - mar shampla, corona discharge nó void discharge - ag cur chun cinn anailís agus diagnóis. Tógfar mécanaim rathainn trí chumhachtanna a shocrú chun glaochainne a spreagadh agus an foinse dischárga a aimsiú.

I bhfad cosúil, is féidir le hinspeáil idirbhearta a dhéanamh lena n-áirítear dectectóirí póitibhile chun ceangailte cabhlach agus busbar a sheiceáil. Is féidir téarcha thermography freisin a úsáid chun aonair a aimsiú trí phatrúin teocht neamhdhleathach. In éineach le UHF, AE, agus TEV (Transient Earth Voltage) modhanna, is féidir le diagnóis compordach, ag cur chun cinn an-dírithe agus infearmhaithe.

Tá prionsabalacha dischárgaí i ring main units in ainneoin de scrúdú a chur chun cinn degradáil an chórais insuláide. 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