Ozi bụ isi nke ndị ọrụ
Ụlọ ọrụ simenti na-arụpụta kọmpụta dị iche iche.Ụlọ ọrụ ahụ nwere ahịrị mmepụta 3.Ọkụ ọkụ na-agbanwe agbanwe na-eji moto mbanye inverter, 2000KVA2, 630KVA transformer, na ihe ngbanwe ọ bụla nwere kabinet akwụ ụgwọ capacitor n'akụkụ nrụgide ala.Eserese usoro ọkọnọ ike bụ nke a:
Ezigbo data arụ ọrụ
Ike mmepụta nke ihe dị nro maka 2000KVA transformer bụ 1720KVA, nkezi ike ihe bụ PF = 0.83, na-arụ ọrụ ugbu a bụ 2500A, ike bụ 530KVA630KVA transformer, nkezi ike ihe bụ PF = 0.87, na-arụ ọrụ ugbu a bụ 770A.Kabinet nkwụghachi ụgwọ ike na-emeghachi omume n'okpuru ihe ngbanwe ọ bụla na-enwekarị njem ike, ntapu mmanụ capacitor, yana ozi njikwa njikwa na-anaghị ekwe ka arụ ọrụ adịghị mma.Ya mere, ihe ike zuru oke bụ naanị 0.84, na ntaramahụhụ ike na-emeghachi omume bụ ihe dịka 20,000 na January.Na mmepụta akara Motors na nro Starters nwere ike mgbe ụfọdụ imebi n'ichepụta.
Nyocha Ọnọdụ Sistemu Ike
Ibu ibu nke ballast nke ntụgharị bụ 6 otu-pulse ballasts.Ngwá ọrụ ballast na-emepụta nnukwu ego nke ugbu a na-arụ ọrụ nke ịtụgharị AC na DC.Ọ bụ isi mmalite pulse dị ugbu a ma bụrụ ntinye n'ime grid ọkụ.Harmonic okwukwo na-eme ka pulsed ugbu a na-arụ ọrụ voltaji ka e ji mara impedance nke ike okporo, n'ihi na etiti ọnwụ nke na-arụ ọrụ voltaji na ugbu a, ize ndụ àgwà na ọrụ nchekwa nke ịmafe ike onunu, na-amụba akara ọnwụ na-arụ ọrụ voltaji deviation, na-eme ka ọjọọ mmetụta na. ike okporo na ike osisi n'onwe ha Mmetụta.
Ihe njikwa mmemme kọmputa (PLC) na-enwe mmetụta maka ngbanwe kwekọrọ na voltaji na-arụ ọrụ nke ọkụ ọkụ na-agbanwe.A na-akọwakarị na ngụkọta pulse ugbu a na-arụ ọrụ voltaji etiti ọnwụ (THD) bụ ihe na-erughị 5%, na onye ọ bụla pulse ugbu a voltaji na-arụ ọrụ Ọ bụrụ na etiti ọnụego dị elu, njehie ọrụ nke sistemu njikwa nwere ike ibute nkwụsị nke. mmepụta ma ọ bụ ọrụ, na-ebute nnukwu ihe mberede mmepụta ihe.
Mgbe reactive ike akwụ capacitor akụ na-etinye n'ime ọrụ, n'ihi na usu ugbu a e ji mara impedance nke capacitor akụ bụ obere, a nnukwu ego nke usu ugbu a na-ẹkenam n'ime capacitor mejupụtara, na nke ugbu a ego gbasaa ngwa ngwa, na-emetụta ya ọrụ ndụ. .N'aka nke ọzọ, mgbe pulse ugbu a capacitor nke capacitor bank bụ nha nha pulse inductor nke usoro software, mmụba nke ugbu a harmonic (2-10 ugboro) ga-eme ka capacitor na-ekpo ọkụ ma mebie ya, na pulse current ga-eme ka ugboro nke ike mmepụta gbanwee.The sinusoidal waveform apụọla na etiti, na-ebute ebili mmiri dị nkọ dị ka eze, na ọ ga-eme ka mwepu nke ihe oyi akwa ahụ na-eme ka ọ dịkwuo ngwa ngwa, na-eme ka ihe mgbochi nke ihe mkpuchi ahụ dịkwuo ngwa ngwa, na-emebi capacitor.Ya mere, enweghị ike iji capacitor reactive ike akwụ ụgwọ kabinet maka inverter ike akwụ ụgwọ, na a nzacha na usu ugbu a suppression ọrụ kwesịrị họrọ ala voltaji reactive ike akwụ ụgwọ.
Nyochaa atụmatụ ọgwụgwọ nkwụghachi ike na-emeghachi omume
Ebumnuche ọchịchị
Nhazi nke akụrụngwa nkwụghachi ụgwọ nzacha na-emezu ihe achọrọ nke mkpochapụ kwekọrọ na njikwa mmechi ike.
N'okpuru ọnọdụ sistemụ 0.4KV, mgbe etinyere ngwa nzacha nzacha nzacha, a na-ebelata pulse current, na nkezi ike kwa ọnwa dị gburugburu 0.92.
Resonance kwekọrọ n'usoro dị elu, resonance overvoltage, na nfefe gafere site na ijikọ na sekit nkwụ ụgwọ alaka nzacha agaghị eme.
Imewe na-agbaso ụkpụrụ
Ịdị ike Ọha grid harmonics GB/T14519-1993
Ọdịmma voltaji mgbanwe na flicker GB12326-2000
Ọnọdụ teknuzu zuru oke nke ngwaọrụ nkwụghachi ụgwọ ọkụ ọkụ dị ala GB/T 15576-1995
Ngwaọrụ nkwụghachi ụgwọ nke obere voltaji JB/T 7115-1993
Ọnọdụ teknuzu nkwụghachi ụgwọ ọrụ ike JB/T9663-1999 "Onye na-ahụ maka nkwụghachi ụgwọ dị ala na-arụ ọrụ" site na ọnụ ahịa nkwekọ dị elu dị ugbu a nke obere voltaji na ngwa eletrọnịkị GB/T17625.7-1998
Usoro eletrọnịkị Ike capacitors GB/T 2900.16-1996
Obere voltaji shunt capacitor GB/T 3983.1-1989
Reactor GB10229-88
Reactor IEC 289-88
Onye na-ahụ maka nkwụghachi ụgwọ ọrụ obere voltaji nyere iwu ọnọdụ teknụzụ DL/T597-1996
Ọkwa nchekwa mkpuchi ọkụ eletrik dị ala GB5013.1-1997
Igwe ọkụ ọkụ ọkụ zuru oke na akụrụngwa njikwa GB7251.1-1997
echiche nke imewe
Dị ka kpọmkwem ọnọdụ nke ụlọ ọrụ, ike ihe na usu ugbu suppression na-atụle na nyo akwụ ụgwọ nke inverter ike ọkọnọ, na nyo ọdịda ụgwọ akụrụngwa na-setịpụrụ na 0.4kV ala voltaji n'akụkụ nke transformer, nke nwere ike ịkwụsị. pulse ugbu a ma kwụọ ụgwọ maka mmelite nke ihe ike.
Na onye ntụgharị, ballast na-emepụta 6K-1 elu pulse iyi dị ka Fourier usoro nke ugbu a na-erugharị, wee na-emepụta 5 elu pulse currents, nke ọ bụla na ihe dịka 250Hz na 7350Hz.Ya mere, mgbe ị na-emepụta nkwụghachi ụgwọ ike na-emeghachi omume maka ọkụ induction ugboro ugboro, ọ dị mkpa ịmepụta ugboro ugboro gburugburu 250Hz na 350Hz iji hụ na alaka nzacha nzacha nwere ike ịkwụsị ọkụ ọkụ nke ọma, na-akwụghachi ụgwọ na-arụ ọrụ n'otu oge, ma melite ihe ike.
imewe ọrụ
A na-akwụ ụgwọ ike zuru oke nke eriri ike inverter jikọtara ọnụ nke ihe ngbanwe AC 2000kV site na 0.8 ruo 0.95.Ngwa nzacha nzacha ga-enwerịrị olu nke 760kV, ma gbanwee ya na-akpaghị aka n'ụdị mpịakọta 8, otu setịpụrụ na-arụkọ ọrụ na nkwụghachi ụgwọ ikuku na akụkụ voltaji nke ala nke ihe ntụgharị.Ibu ọrụ nke nhazi klaasị bụ 45KVAR, nke nwere ike izute ike dị iche iche nke ahịrị mmepụta.Akwụghachila ihe nrụpụta ike zuru oke nke ahịrị ntụgharị ntụgharị 630kV, yana nsonye akwụ ụgwọ sitere na 0.8 ruo 0.95.Ngwa nzacha ihe nzacha ga-enwerịrị olu 310kV, nke a na-agbanwe na-akpaghị aka ka ọ bụrụ mpịakọta anọ, otu setịpụrụ na-arụkọ ọrụ na ikuku ikuku n'akụkụ voltaji nke ala nke transformer maka ịkwụ ụgwọ.Ibu ọrụ nke nhazi klaasị bụ 26KVAR, nke nwere ike izute ike dị iche iche nke ahịrị mmepụta.Nhazi atụmatụ ahụ na-ekwe nkwa n'ụzọ zuru oke na ike ike karịrị 0.95.
Ntụle mmetụta mgbe echichi nke nzacha nzacha
Na Julaị 2010, etinyere ngwaọrụ nkwụghachi ụgwọ ike inverter filter ma tinye n'ọrụ.Ngwaọrụ ahụ na-akpaghasị mgbanwe ibu nke ihe ntụgharị, na-egbochi harmonics dị elu ozugbo, na-akwụghachi ike mmeghachi omume ma na-emezi ihe ike.nkọwa dị ka ndị a:
Mgbe etinyere ngwaọrụ nzacha nzacha, mgbanwe mgbanwe mgbanwe ike mgbe etinyere ngwaọrụ nkwụ ụgwọ nzacha bụ ihe dịka 0.97 (akụkụ ewelitere bụ ihe dịka 0.8 mgbe ewepụrụ ngwaọrụ nkwụ ụgwọ nzacha)
Ibu ọrụ
Nke ugbu a nke 2000KVA transformers na-eji na-ebelata site na 2500A ruo 2120A, mbelata nke 15%;Nke ugbu a nke 630KVA transformers na-eji belata site na 770A ruo 620A, mbelata nke 19%.Mgbe nkwụghachi ụgwọ,thepowerlossreductionvalueisWT=△Pd*(S1/S2)2*τ*[1-(cosφ1/cosφ2)2]=50×{(0.85×4500)/4500}2×0.4≈34(kw h) N'ime usoro, Pd bụ mkpirisi okirikiri ọnwụ nke transformer, nke bụ 50KW, na kwa afọ na-azọpụta ọkụ eletrik mmefu bụ 34*20*30*10*0.7=142,800 yuan (dabere na-arụ ọrụ awa 20 kwa ụbọchị, ụbọchị 30 n'ọnwa). , ọnwa 10 kwa afọ, 0.7 yuan kwa kWh).
ọnọdụ ihe kpatara ike
Ngụkọta ụlọ ọrụ n'ozuzu ike injinịa index abawanyela site na 0.8 ruo 0.95, na kwa ọnwa ike engineering index ka nọgidere na 0.96-0.98, na-ebili si ihe karịrị 20,000 yuan kwa ọnwa ka ihe karịrị 6,000-10,000 yuan kwa ọnwa.
Nkwụghachi ụgwọ ọrụ nke obere voltaji nke ngbanwe ntụgharị ugboro ugboro nwere ikike igbochi pulse ugbu a ma kwụọ ụgwọ ọrụ mmeghachi omume, dozie nsogbu nke ntaramahụhụ ike na-emeghachi omume, na-abawanye ikike nrụpụta nke ihe ntụgharị, belata mfu nke nkwụghachi ike na-arụ ọrụ, mụbaa mmepụta, ma weta uru na ụlọ ọrụ ahụ, a rụpụtawo uru akụ na ụba doro anya, na ntinye ego nke onye ahịa na-erughị otu afọ nke inweta ego oru ngo.Ya mere, ụlọ ọrụ nwere nnọọ afọ ojuju na reactive ike akwụ ụgwọ nke inverter nyo, na ga-ewebata ụfọdụ ndị ahịa n'ọdịnihu.
Oge nzipu: Eprel-13-2023