Isi ihe ngbanwe nke sistemu igwe igwe igwe na-ekesa ike bụ ihe ngbanwe nke nwere voltaji nke 0.4/0.66/0.75 kV, ibu bụ isi bụ moto isi DC.N'ihi na ike nnyefe na nkesa nke onye ọrụ extruder rectifier ngwaọrụ n'ozuzu na-eji ụdị abụọ nke isii-pulse rectifier technology, nke na-emepụta a ụfọdụ ego nke pulse ugbu a (6N + 1) dị iche iche degrees na ala voltaji n'akụkụ, na tumadi (6N). +1) n'akụkụ oke voltaji.12N+1) Gosipụta ọnọdụ nrụzi otu usu iri na abụọ.
Mmebi nke harmonics injinịa ike na grid ọkụ na-adabere na mmerụ ahụ nke voltaji na-arụ ọrụ kwekọrọ na igwe na akụrụngwa dị na grid ike, ya bụ, voltaji na-arụ ọrụ kwekọrọ na ọkwa nke igwe na akụrụngwa nwere ike ibu.Ndị na-enye ọkụ eletrik na-ahụ maka pulse ugbu a na-arụ ọrụ voltaji nke netwọk ọkụ ọkụ, na onye na-azụ ọkụ na-ahụ maka iwebata ihe kwekọrọ ugbu a nke ngwanrọ sistemụ.
Dị ka ahụmahụ injinia nke ụlọ ọrụ anyị omenala Rolling igwe igwe na-emeso harmonics, na-arụ ọrụ, na onye ọrụ si obere voltaji ike nkesa usoro, 5th harmonic ọdịnaya ugbu a ruru 20% ~ 25%, 7 harmonic ugbu a ruru 8%, na harmonic ugbu a na-agbanye n'ime voltaji dị elu Ihe nkwekọrịta kwekọrọ na usoro ike na-abawanye ngwa ngwa, nke na-eme ka ntụgharị waveform nke voltaji ọkọnọ, na-abawanye nkwụsị nke wiring na ngwá ọrụ ike, na-eweta ihe oriri ndị ọzọ, na-emetụta ọrụ nkịtị nke ndị ọzọ. akụrụngwa ike na grid ike, ma na-ebelata ogo ike nke grid ike., nke na-emetụta nchekwa ike nke grid ike ma na-eweta ihe ize ndụ nchekwa na ọrụ nchekwa nke akụrụngwa.
Iji hụ na arụ ọrụ nkịtị nke akụrụngwa, ike ọkọnọ a pụrụ ịdabere na ya na ịzọpụta ike nke sistemu ike, ọ dị mkpa iji usoro teknụzụ iji gbochie harmonic ugbu a nke akụrụngwa ma tụlee nkwụghachi ụgwọ nke ike reactive bụ isi.Dị ka àgwà ụkpụrụ nke na-arụ ọrụ voltaji ngwaahịa na mba m ike okporo na ndị ọkà mmụta sayensị nchoputa nke usu ugbu a akara na mba dị iche iche n'ụwa, na-teknuzu nkọwa nke ala voltaji nzacha na ike akwụ ụgwọ na-nakweere, na nza akara loops bụ n'otu n'otu. atọrọ maka njirimara pulse iyi nke ihe nrụzi mere ka ọ gbarie ma banye n'ụkpụrụ mmiri kwekọrọ.Na mgbakwunye, ọ nwere ọrụ nke na-akwụghachi ụgwọ ọrụ nke ebili mmiri dị mkpa na ịchekwa ike eletrik.
Ngwa mgbochi-harmonic nke Zhejiang Hongyan Electric Co., Ltd mepụtara nwere njirimara nke mgbanwe mgbanwe na ibu.Ọ bụ ezie na n'ụzọ dị irè na-emeziwanye ike ike, ihe ike na ike ịzọpụta ike nke grid ike, ọ nwekwara ike melite ntụkwasị obi nke mkpokọta ọrụ nke ike usoro na arụmọrụ nke ngwá ọrụ, na-ebelata ọrụ na-akwụ ụgwọ na Belata akụrụngwa mmezi ụgwọ, ogologo akụrụngwa. ndụ, ma na-eweta uru akụ na ụba doro anya nye ndị ọrụ.
Igwe igwe igwe na-agbagharị DC na-ejikarị moto DC, na ike na-akpata n'oge mpịakọta dị obere, n'ozuzu gburugburu 0.7.Otu n'ime njirimara ya bụ obere okirikiri ọrụ, ọsọ ọsọ, ibu mmetụta, yana nnukwu mgbanwe na-adịghị mma.Ndị na-emegharị ike nwekwara ike ịkpata mgbanwe siri ike na voltaji grid, na-eme ka ọkụ na ihuenyo TV na-amagharị, na-eme ka ike ọgwụgwụ anya na iwe iwe.Na mgbakwunye, ha ga-emetụtakwa ịrụ ọrụ nke ọma nke akụrụngwa thyristor, ngwa ma ọ bụ akụrụngwa mmepụta, na ọbụna kpatara ihe mberede nchekwa.Nkwụghachi ụgwọ ụlọ akụ General capacitor enweghị ike soro mgbanwe ibu n'otu oge iji nọgide na-akwụ ụgwọ ezi uche dị na ya.A na-emetụta ebe kọntaktị akụrụngwa akụrụngwa n'ihi ngbanwe ugboro ugboro, nke nwere mmetụta dị ukwuu na grid ike.
Igwe igwe igwe na-agbagharị DC na-anabata nnyefe eletrik nke teknụzụ mmezi thyristor.Dị ka ọnụ ọgụgụ nke rectification pulses, ọ nwere ike kewaa 6-pulse rectification, 12-pulse ka 24-pulse.Na mgbakwunye na ike dị ala, a ga-emepụta harmonics dị elu n'oge ọrụ.N'ozuzu, ụlọ DC na-agbagharị igwe igwe A na-eji teknụzụ mmezi 6-pulse, yabụ harmonics dị elu na-emepụta site na otu akụkụ ikuku voltaji nke igwe ngbanwe bụ nke kachasị 11 na 13 n'akụkụ obere voltaji nke transformer nwere 2. windings eme na yn nkwonkwo usoro, 5th na 7th High-order harmonics nwere ike dechapụ na elu voltaji n'akụkụ, otú 11th na 13th elu-order harmonic components na-tumadi egosipụta na elu voltaji n'akụkụ.Mmetụta bụ isi nke ụda ọkụ ọkụ dị elu na grid ọkụ gụnyere ikpo ọkụ na ịma jijiji nke ngwa eletriki, ụbara ọnwụ, ndụ ọrụ dị mkpirikpi, mmetụta nkwurịta okwu, njehie ọrụ thyristor, njehie arụ ọrụ nke ụfọdụ ngwaọrụ nchebe relay, ịka nká na mmebi nke mkpuchi mkpuchi eletrik. , wdg.
Ihe ngwọta ịhọrọ site na:
Ngwọta 1 njikwa Centralized (ọdabara maka ndị ọbịa nwere obere ike, mpịakọta aka ekpe na aka nri)
1. Nabata alaka harmonic akara (3, 5, 7 nzacha) + ngalaba na-ahụ maka njikwa ike.Mgbe etinyere ngwaọrụ nkwụ ụgwọ nzacha n'ọrụ, njikwa harmonic na nkwụghachi ụgwọ ike nke sistemu ike na-emezu ihe achọrọ.
2. Jiri sekit gafere nke na-egbochi nkwụghachi ụgwọ na-adịghị arụ ọrụ nke harmonics, na mgbe ị jikọtara ngwaọrụ nkwụ ụgwọ nzacha, mee ka ihe ike mejupụta ihe achọrọ.
Nhọrọ 2 Ọgwụgwọ mpaghara (ọdabara na 12-pulse rectifier transformer obere voltaji n'akụkụ ọgwụgwọ na nnukwu ike engine na winding igwe arụnyere iche iche)
1. Nabata mgbochi-harmonic uzo (5th, 7th, 11th order filter), nsuso akpaaka mgbe igwe igwe na-agba ọsọ, dozie harmonics na saịtị, adịghị emetụta ọrụ nke akụrụngwa ndị ọzọ n'oge mmepụta, na harmonics adịghị eru ọkọlọtọ. mgbe etinyere ya n'ọrụ.
2. Iji nzacha na-arụ ọrụ (nyocha dynamic harmonics) na nzacha nzacha (5th, 7th, 11th order filter), ihe nkwekọ mgbe ịgbanye ọkụ adịghị eru ọkọlọtọ.
Oge nzipu: Eprel-13-2023