Ozi bụ isi nke ndị ọrụ
The plastic ngwaahịa ụlọ ọrụ tumadi na-emepụta PE mmiri ọkọnọ ọkpọkọ, metal bellows drainage ọkpọkọ, wdg Ụlọ ọrụ nwere 4 mmepụta ahịrị, akụkụ nke ndị na-anya ụgbọ ala na-eji DC brushless Motors na DC variable ugboro mbanye Motors, e nwere anọ tent nke 400KVA, onye ọ bụla transformer. Akụkụ nrụgide ala Ejiri igbe akwụ ụgwọ capacitance.Eserese usoro ọkọnọ ike bụ nke a:
Ezigbo data arụ ọrụ
Moto DC nke ihe ntụgharị 400KVA, ike dị elu nke onye ntụgharị bụ 360KW, nkezi ike ihe bụ PF = 0.7, ugbu a na-arụ ọrụ bụ 780A, igbe akwụ ụgwọ na-adịghị mma n'okpuru ihe ntụgharị ọ bụla na-agakarị, capacitor na-agbasa ma na-agbapụta, yana Onye njikwa enweghị ike ijikwa ihe na-adịghị mma, wdg. Phenomena, ọnụ ọgụgụ zuru oke bụ naanị 0.8, na mma na-adịghị mma bụ ihe dịka 15,000 kwa ọnwa.Tụkwasị na nke ahụ, moto na ndị na-amalite nro na-emepụta ihe na-emebi mgbe ụfọdụ, nke na-emetụta mmepụta.
Nyocha Ọnọdụ Sistemu Ike
Ibu ibu nke moto brushless DC na inverter rectifier ike ọkọnọ bụ 6 otu-pulse rectifier ike ọkọnọ.N'oge ọrụ nke rectifier akụrụngwa, AC nwere ike converted n'ime DC, na-akpụ a ọnụ ọgụgụ buru ibu nke pulse isi mmalite ugbu a, ewebata harmonic okwukwo na ike okporo, na-emetụta ike okporo.Ihe njiri mara njirimara na-akpata voltaji na-arụ ọrụ nke pulse ugbu a, na-ebute mpụta nke voltaji na-arụ ọrụ na nke ugbu a, na-etinye ihe nchekwa na nchekwa ọrụ nke ọkụ ọkụ na-agbanwe, na-abawanye ọnụọgụ ahịrị na ngbanwe voltaji na-arụ ọrụ, na inwe oke. mmetụta na-adịghị mma na grid ọkụ na ngwa eletrik nke ọkụ ọkụ n'onwe ya.
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 DC brushless moto na inverter ike akwụ ụgwọ, na a nzacha na pulse ugbu a suppression ọrụ kwesịrị ka a 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
Imepụta echiche
Dị ka ọnọdụ nke ụlọ ọrụ ahụ siri dị, ụlọ ọrụ anyị haziri setịpụrụ nke zuru ezu DC moto na soft Starter reactive ike nzacha nzacha atụmatụ.Tụlee nke ọma na ibu ike ihe na nkwekọ suppress, na wụnye nzacha na 0.4KV ala voltaji n'akụkụ nke ụlọ ọrụ transformer maka obere voltaji reactive ike akwụ ụgwọ iji kwụsị harmonics, kwụọ ụgwọ reactive ike, na melite ike ihe.N'oge ọrụ nke moto DC na inverter, ngwaọrụ rectifier na-emepụta 6K + 1 harmonics dị elu.Mgbe emechara nke ugbu a ma gbanwee site na usoro Fourier, a na-emepụta oge 5 nke 250HZ na oge 7 nke harmonics dị elu karịa 350HZ.Ya mere, n'ime imewe nke etiti oge ọkụ ọkụ eletrik nzacha reactive ike nkwụghachi, ọ dị mkpa chepụta frequencies nke 250HZ, 350HZ na n'elu iji hụ na nzacha nzacha alaka nwere ike n'ụzọ dị irè na-ekpochapụ harmonics na-akwụ ụgwọ reactive ike na-emeziwanye ike ihe.
imewe ọrụ
A na-akwụghachi ike zuru oke nke moto DC na ahịrị mmepụta ihe ntụgharị ugboro ugboro kwekọrọ na ntụgharị 400KVA site na 0.7 ruo karịa 0.95.Ekwesịrị ịtọ nzacha nzacha na ikike nke 380kvar, nke kewara n'ime otu ikike 4 wee bepụ ya na-akpaghị aka iji kwụọ ụgwọ nkwụghachi nke akụkụ voltaji dị ala nke ihe ntụgharị.The nkewa mgbanwe ikike bụ 45kvar, nke nwere ike imeghari dị iche iche ike chọrọ nke mmepụta ahịrị, otú imewe n'ụzọ zuru ezu na-eme ka n'ụzọ zuru ezu na-agbaziri ike dị n'elu 0,9.
Ntụle mmetụta mgbe echichi nke nzacha nzacha
N'ọnwa Julaị 2010, etinyere ngwaọrụ nkwụghachi ụgwọ ike nzacha maka moto DC na ndị ntụgharị ugboro ugboro wee tinye ya n'ọrụ.Ngwa a na-enyocha mgbanwe ibu nke moto DC na ndị na-agbanwe ugboro ugboro, 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 0.99 (akụkụ ewelitere bụ ihe dịka 0.7 mgbe ewepụrụ ngwaọrụ nkwụ ụgwọ nzacha)
Ibu ọrụ
Nke ugbu a nke ihe ngbanwe 400KVA na-eji na-ebelata site na 770A ruo 520A, mbelata nke 33%.Mgbe nkwụghachi ụgwọ, uru mbelata ọnwụ ike bụ WT=△Pd*(S1/S2)2*τ*[1-(cosφ1/cosφ2)2]=5×{(0.7×400)400}2×0.4≈2.8( kw· h) Na usoro, Pd bụ mkpụmkpụ-circuit ọnwụ nke transformer, nke bụ 5KW, na kwa afọ na-azọpụta ọkụ eletrik mmefu bụ 2.8*20*30*10*0.7=11,700 yuan (dabere na-arụ ọrụ awa 20 a. ụbọchị, ụbọchị 30 n'ọnwa, ọnwa 10 kwa afọ, kwa kwh ọkụ eletrik 0.7 yuan).
ọnọdụ ihe kpatara ike
Ihe ikike niile nke ụlọ ọrụ ahụ gbagoro site na 0.7 ruo 0.95, ihe ikike ikike kwa ọnwa nọgidere na 0.96-0.98, na ntaramahụhụ sitere na yuan 15,000 kwa ọnwa gbagoro na yuan 3,000-5,000 kwa ọnwa.
The BLDC moto na nro Starter filter
Ngwaọrụ nkwụghachi ụgwọ nke reactive nwere ikike igbochi pulse ugbu a ma kwụọ ụgwọ ike na-emeghachi omume, dozie nsogbu nke ntaramahụhụ ike reactive, na-abawanye mmepụta olu nke transformer, belata oriri ike na-arụ ọrụ, na ịbawanye mmepụta, na-eweta uru akụ na ụba doro anya. na ụlọ ọrụ na nloghachi nke ndị ahịa oru ngo itinye ego otu afọ gara aga.Ya mere, ụlọ ọrụ nwere nnọọ afọ ojuju na reactive ike akwụ ụgwọ nke brushless DC Motors na inverter nzacha, na ga-ewebata ụfọdụ ahịa n'ọdịnihu.
Oge nzipu: Eprel-14-2023