Izinyathelo Zokuqaphela Isilinganiso Sokufakwa Kwejeneretha

Amajeneretha angochwepheshe afaka ulwazi oluningi lochwepheshe, futhi enye yazo ukuhlolwa kokufakwa kwamajeneretha. Namuhla, ngizokwethula ukuhlolwa kokufakwa kwamajeneretha kanye nezindaba ezidinga ukunakwa.

I-insulation ye-generator ihlukaniswe ngezinto ezimbili: ukufakwa kwe-stator kanye nokufakwa kwe-rotor.

I-Stator Insulation

Indawo yokulinganisa ye-stator insulation ikukhabhinethi ephansi yejeneretha engathathi hlangothi. I-stator insulation ingalinganiswa kuphela lapho i-rotor isesimweni esimile noma sokuvimbela, i-generator ikhokhiswa i-hydrogen kumfutho olinganiselwe, amanzi okupholisa e-stator afakwe ekusebenzeni, futhi ukuqhutshwa kwamanzi okupholisa kuzungeze i-0.2 μS / cm.

#1, indawo ephansi ye-generator neutral kufanele inqanyulwe, futhi i-PT trolley ye-generator kufanele ikhishwe. Bese, i-1000V insulation tester (megohmmeter) isetshenziselwa ukulinganisa. Kubhekwa njengokufanelekile lapho ukufakwa phakathi kwesigaba nomhlabathi kungengaphansi kuka-1MΩ.

#2, amaphuzu aphansi ama-voltage transformers ku-neutral ye-generator kanye ne-excitation transformer neutral kufanele inqanyulwe, futhi i-generator PT trolley kufanele ikhishwe. Bese, isihloli sokumelana nokufakwa kwe-2500V sisetshenziselwa ukulinganisa. Isikhathi sokufaka i-voltage yesilinganiso iminithi elingu-1. Uma izinga lokushisa lingaphansi kuka-20℃, ukufakwa phakathi kwesigaba nomhlabathi akufanele kube ngaphansi kuka-0.5MΩ, futhi isigaba ngasinye kufanele silinganiswe kanye esimweni sokufana sezigaba ezintathu. Uma inani elilinganisiwe lingaphansi kuka-80% yenani elingenhla noma umehluko kumanani wokufaka phakathi kwezigaba ungaphezu kuka-20%, ukugquma akufanelekile.

#3,#4,#5,iswishi yommese waphansi we-generator neutral kufanele ikhishwe, futhi inqola ye-PT generator kufanele ikhishwe. Bese, isihloli sokumelana nokufakwa kwe-1000V sisetshenziselwa ukulinganisa. Kubhekwa njengokufanelekile lapho ukufakwa phakathi kwesigaba nomhlabathi kungengaphansi kuka-0.8MΩ.

I-Rotor Insulation Measurement

Kuyunithi #1, sebenzisa isihloli sokumelana nokufakwa kwe-500V (megohmmeter). Ukumelana nokufakwa phansi kufanele kube kukhulu kuno-20MΩ.

Isilinganiso se-rotor insulation seYunithi #2 senziwa izisebenzi zokunakekela. Kudingeka ukuthi ukumelana nokufakwa phansi kube kukhulu kuno-100MΩ ku-20℃ futhi kukhulu kuno-50MΩ ku-30℃.

Okweyunithi #3, Iyunithi #4 kanye Neyunithi #5, sebenzisa isihloli sokumelana nokufakwa kwe-500V. Ukumelana nokufakwa phansi kufanele kube kukhulu kuno-1MΩ.

Izinyathelo Zokuqaphela Isilinganiso Sokufakwa Kwejeneretha

I-1) Ngesikhathi senqubo yokushintsha igesi kanye nokuhlolwa kokuvula nokuvala ama-switch unit e-generator-transformer, kuvinjelwe ngokuqinile ukulinganisa ukugxilwa kwazo zonke izingxenye ze-generator.

2) Ungasebenzisi i-insulation resistance tester ukukala ukumelana nokufakwa kwengxenye yokulawula kanye nemishini kagesi yekhabhinethi yokulungisa kabusha. Uma ukulinganisa kudingekile, kufanele kwenziwe ngabasebenzi abaqeqeshiwe.

3) Xhuma i-wiring ye-megohmmeter yamanzi ngendlela efanele ukuze uvimbele ukulimala ku-megohmmeter yamanzi.

4) Ipayipi lokuqoqa lamanzi okupholisa e-stator (amatheminali 94, 95, 96) kufanele asekelwe phansi ngokuthembekile ngemva kokulinganisa.

5) Lapho kulinganiswa ukuvaleka kwe-exciter rotor eyinhloko yeYunithi #1 kanye neYunithi #2, iswishi yokutholwa kokufakwa kwe-exciter rotor eyinhloko kufanele ishintshelwe endaweni yokuthi (ukulingisa Kweyunithi #2) (ukuhlolwa Kweyunithi #1).

6) Lapho ukala ukufakwa kwe-rotor ye-Generator #3 kanye ne-Generator #4, i-rotor grounding fuse kanye ne-rotor voltage isolation fuse kufanele idonswe ivuleke. Uma kungenjalo, i-fuse ingase iqhume.

7) Ngaphambi kokulinganisa ukufakwa kwe-low-voltage side winding ye-excitation transformer, amafuse e-DC capacitor, i-auxiliary transformer kanye ne-synchronous transformer kukhabhinethi yokulungisa kufanele idonswe ivuliwe.

I-8) Lapho ulinganisa ukufakwa kweyunithi ye-generator-transformer, ukushintshwa kwe-outlet yokunqamula i-transformer eyinhloko kanye nokushintshwa kwegatsha le-high-voltage service service transformer kufanele kube endaweni evulekile, futhi i-generator outlet PT kufanele ibe sesimweni esinqanyuliwe.

I-9) Kuvunyelwe kuphela ukukala ukufakwa kwe-generator lapho i-rotor ye-generator isesimweni esimile noma sokuvimbela ukuvimbela ukushaqeka kukagesi kubasebenzi noma ukulimala kwe-megohmmeter yamanzi.

Isitatimende: Ama-athikili akuwebhusayithi adalwa ekuqaleni inkampani ye-Jlmech (https://www.whjlmech.com) noma aphrintwe kabusha asuka kwenye imidiya yokuzenzela. Lapho ucaphuna noma uphrinta kabusha okuqukethwe kwalesi sihloko, sicela ubonise umthombo!