Ho ipapisitsoe le boiphihlelo ba boleng ba motlakase, ha re khethasefa se sebetsang sa harmonic, mekhoa e 'meli e atisa ho sebelisoa ho hakanya bokhoni ba ho hatella ha harmonic.
1.Puso e bohareng: Hakanya bokhoni ba tlhophiso ea puso e lumellanang e thehiloeng ho sehlopha sa indasteri le matla a li-transformer.
S---- Matla a lekantsoeng a Transformer, U---- Voltage e lekantsoeng ka lehlakoreng la bobeli la U-transformer
Ih---- Harmonic current, THDi---- Kakaretso ea sekhahla sa ho sotha ha joale, ka mefuta e mengata ea boleng e lekantsoeng ho ipapisitsoe le liindasteri tse fapaneng kapa meroalo.
K---- Sekhahla sa ho jara transfoma
| Mofuta oa indasteri | Sekhahla se tloaelehileng sa ho sotha% |
| Tsela e tsamaeang ka tlas'a lefatše, Lithanele, literene tse lebelo le holimo, Boemafofane | 15% |
| Puisano, meaho ea khoebo, Libanka | 20% |
| Indasteri ea bongaka | 25% |
| Ho etsa likoloi, ho etsa likepe | 30% |
| Lik'hemik'hale \Petroleum | 35% |
| Indasteri ea metallurgic | 40% |
2.Taolong ea sebaka: Hakanya bokhoni ba tlhophiso ea puso e lumellanang e ipapisitseng le lits'ebeletso tse fapaneng tsa mojaro.
Ih---- Harmonic hona joale, THDi----Kakaretso ea sekhahla sa khopamiso, ka mefuta e mengata ea boleng e lekantsoeng ho ipapisitsoe le liindasteri tse fapaneng kapa meroalo
K--- Sekhahla sa ho jara transformer
| Mofuta oa mojaro | Litaba tse tloaelehileng tsa harmonic% | Mofuta oa mojaro | Litaba tse tloaelehileng tsa harmonic% |
| Inverter | 30---50 | Matla a ho futhumatsa a mahareng a maqhubu a mahareng | 30---35 |
| Elevator | 15---30 | Six rectifier | 28---38 |
| Mabone a LED | 15---20 | Se lokisa pelo e leshome le metso e 'meli | 10---12 |
| Lebone la ho boloka matla | 15---30 | Mochini oa ho cheselletsa motlakase | 25---58 |
| Ballast ea elektroniki | 15---18 | Ho feto-fetoha ha moea oa moea | 6----34 |
| Mokhoa oa ho fetola motlakase | 20---30 | UPS | 10---25 |
Tlhokomeliso: Lipalopalo tse ka holimo ke mekhoa ea likhakanyo feela bakeng sa litšupiso.
Ha re khethastatic var jenereithara, mekhoa e 'meli e atisa ho sebelisoa ho hakanya bokhoni ba matšeliso a matla a sebetsang.
1. Khakanyo e ipapisitseng le bokhoni ba transfoma:
20% ho isa ho 40% ea matla a transformer a sebelisetsoa ho lokisa matla a mats'eliso a matla a sebetsang, ka khetho e akaretsang ea 30%.
Q=30%*S
Q ------------------------------------------------------------------------------------------------------------------------------------------------------------------
Mohlala, transformer ea 1000kVA e na le matšeliso a matla a sebetsang a 300kvar.
2.Calculate e ipapisitse le matla le matla a sebetsang a lisebelisoa:
Haeba ho na le likarolo tse qaqileng tsa mojaro, joalo ka matla a phahameng a sebetsang a P, matla a COSO pele ho matšeliso, le sepheo sa matla a sepheo sa COSO ka mor'a matšeliso, matla a sebele a matšeliso a hlokahalang bakeng sa tsamaiso a ka baloa ka ho toba:
Q ---------------------------------------------------------------------------------------------------------------------
K----Karolelano ea coefficient ea mojaro(ka kakaretso e nkuoa e le 0.7--0.8)
Ela hloko: Lipalo tse ka holimo ke tsa litšupiso feela.
Noker Electric e ikemiselitse ho fa bareki mats'eliso a matla a ts'ebetso le litharollo tsa taolo ea harmonic, lipotso life kapa life khethong ea sehlahisoa, o lokolohile ho ikopanya le rona.
Nako ea poso: Dec-08-2023