Site na mmepe ngwa ngwa nke akụ na ụba obodo anyị, ọkachasị mmụba ngwa ngwa nke ụlọ ọrụ Ngwuputa, ịgbaze na nkedo n'afọ ndị na-adịbeghị anya, ọchịchọ ọkụ eletrik na-abawanye.N'ime ha, nke etiti ugboro agbaze ọkụ rectification akụrụngwa bụ otu n'ime ndị kasị harmonic ike ọgbọ akụrụngwa, ma n'ihi na ọtụtụ emepụta belata ngwaahịa na-akwụ ụgwọ na adịghị wụnye harmonic suppression technology ụlọ ọrụ, ugbu a ọha ike okporo na-ukwuu merụọ site harmonics dị ka haze ihu igwe .Pulse current na-ebelata nhazi, nnyefe na itinye n'ọrụ nke ike electromagnetic, na-ekpo ọkụ ngwa eletrik, na-akpata mkpọtụ na mkpọtụ, mkpuchi afọ, na-ebelata ndụ ọrụ, na ọbụna na-akpata ọdịda ma ọ bụ ọkụ.Harmonics nwere ike ime ka resonance mpaghara ma ọ bụ usoro resonance nke sistemụ ike, si otú ahụ gbasaa ọdịnaya kwekọrọ na ime ka capacitors gbaa ọkụ na akụrụngwa ndị ọzọ.Harmonics nwekwara ike ịkpata mmejọ nke relays nchekwa na ngwaọrụ akpaka ma gbaghaa nha ike.Harmonics na-abụghị sistemu ike nwere ike igbochi akụrụngwa nkwukọrịta yana ngwa eletrọnịkị.
Igwe ọkụ eletrik dị n'etiti etiti bụ otu n'ime isi mmalite kwekọrịtara na ibu grid, n'ihi na a na-atụgharị ya n'ime oge etiti mgbe emezigharị ya.Harmonics ga-etinye nnukwu nsogbu na ọrụ nchekwa nke grid ọkụ.Dị ka ihe atụ, harmonic current ga-eme ka ígwè ngbanwe ọzọ dị elu nke vortex dị elu, nke ga-eme ka ihe ngbanwe ahụ na-ekpo ọkụ, belata mmepụta nke ihe ntụgharị, na-eme ka mkpọtụ nke transformer dịkwuo elu, na-etinyekwa ndụ ọrụ nke transformer n'ihe ize ndụ nke ukwuu. .Mmetụta na-adịgide adịgide nke ikuku harmonic na-ebelata njedebe na-aga n'ihu nke onye na-eduzi ma na-abawanye nkwụsị nke eriri.Harmonic voltaji na-emetụta ọrụ nkịtị nke ngwa eletriki ndị ọzọ na grid, na-ebute njehie arụ ọrụ na ngwa njikwa akpaka yana nkwenye nha na-ezighi ezi.Harmonic voltaji na ugbu a na-emetụta ọrụ nkịtị nke akụrụngwa nkwurịta okwu;overvoltage na-agafe agafe na nke na-adịru nwa oge na-akpata site na harmonics na-emebi oyi akwa mkpuchi nke igwe na akụrụngwa, na-ebute mmejọ mkpụmkpụ nke nkeji atọ na mmebi nke ndị ntụgharị;harmonic voltaji na ọnụ ọgụgụ nke ugbu a ga-eme ka ele mmadụ anya n'ihu usoro resonance na yiri resonance na ọha ike okporo, na-akpata nnukwu ihe mberede.N'ime usoro nke ịrapagidesi ike na mgbanwe mgbe niile, ihe mbụ ị ga-esi na DC bụ ọkụ ọkụ na-efe efe nke square, nke kwekọrọ na superposition nke harmonics dị elu.Ọ bụ ezie na sekit na-esote kwesịrị ka a na-enyocha ya, a pụghị ịchacha ihe ndị dị elu nke harmonics, nke bụ ihe kpatara ọgbọ nke harmonics.
Anyị haziri ihe nzacha nke otu ugboro 5, 7, 11 na 13.Tupu nzacha nzacha, ihe na-akpata ike mgbaze nke ọkụ eletrik nke etiti oge onye ọrụ bụ 0.91.Mgbe etinyere ngwaọrụ nzacha nzacha n'ọrụ, nkwụghachi ụgwọ kachasị bụ 0.98 capacitive.Mgbe emechara ngwaọrụ nkwụghachi ụgwọ nzacha, ngụkọta mgbagha voltaji (uru THD) bụ 2.02%.Dị ka ike ogo ọkọlọtọ GB/GB/T 14549-1993, voltaji harmonic (10KV) uru bụ ihe na-erughị 4.0%.Mgbe nzacha nke 5th, 7th, 11th and 13th harmonic current, ọnụego nzacha bụ ihe dịka 82∽84%, na-erute uru a na-anabata nke ọkọlọtọ ụlọ ọrụ anyị.Mmetụta nzacha ụgwọ dị mma.
Ya mere, anyị kwesịrị nyochaa ihe ndị na-akpata harmonics ma mee ihe iji gbochie nkwekọrịta dị elu, nke dị oké mkpa iji hụ na arụ ọrụ nchekwa na akụ na ụba nke usoro ike.
Nke mbụ, ihe na-akpata harmonics nke etiti oge ọkụ ọkụ
1. Harmonics na-emepụta site na ibu na-abụghị linear, dị ka silicon na-achịkwa rectifiers, ịgbanwee ike ọkọnọ, wdg The harmonic ugboro eme site na ibu a bụ ihe integer multiple nke na-arụ ọrụ ugboro.Dịka ọmụmaatụ, ihe nrụzi mgbazi isii nke akụkụ atọ na-emepụta nke 5th na 7th harmonics, ebe ihe ngbanwe nke nkeji iri na abụọ na-emepụta nke 11th na 13th harmonics.
2. N'ihi harmonics eme site inverter ibu dị ka intermediate ugboro ọkụ na inverters, ọ bụghị naanị integral harmonics na-eme, kamakwa fractional harmonics nke ugboro bụ ugboro abụọ ugboro nke inverter.Dịka ọmụmaatụ, ọkụ ọkụ nke etiti na-arụ ọrụ na 820 Hz na-eji ihe nhazi isii-pulse rectifier nke atọ na-emepụta ọ bụghị naanị 5th na 7th harmonics, kamakwa akụkụ harmonics na 1640 Hz.
Harmonics na-ejikọta na grid n'ihi na ndị na-emepụta ọkụ na ndị na-agbanwe agbanwe na-emepụta obere ihe nkwekọ.
2. Mmebi nke harmonics na etiti ugboro ọkụ
N'iji ọkụ ọkụ na-eme ihe n'etiti etiti, a na-emepụta ọnụ ọgụgụ dị ukwuu nke harmonics, nke na-eduga ná mmetọ mmetọ dị njọ nke grid ike.
1. Harmonics dị elu ga-eme ka voltaji dị elu ma ọ bụ ugbu a.Mmetụta ịwa ahụ na-ezo aka na obere oge n'elu (obere) voltaji nke sistemụ, ya bụ, ụda ọkụ ọkụ ozugbo nke na-adịghị agafe 1 millisecond.Ọkpụkpụ a nwere ike ịdị mma ma ọ bụ nke na-adịghị mma, ma nwee ike ịnwe usoro ma ọ bụ ọdịdị oscillatory, na-eme ka ngwa ahụ na-ere ọkụ.
2. Harmonics na-ebelata nnyefe na itinye n'ọrụ nke ọkụ eletrik na akụrụngwa thermoelectric, na-emepụta vibration na mkpọtụ, na-eme ka akụkụ ya dị afọ, belata ndụ ọrụ, na ọbụna arụ ọrụ ma ọ bụ ọkụ.
3. Ọ na-emetụta ngwa ọrụ nkwụghachi ụgwọ ike nke ọkụ ọkụ;mgbe enwere harmonics na grid ike, voltaji nke capacitor na-abawanye mgbe etinyere capacitor, na nke ugbu a site na capacitor na-abawanye ọbụna karịa, nke na-eme ka nkwụsị ike nke capacitor dịkwuo elu.Ọ bụrụ na ọdịnaya pulse dị ugbu a dị elu, capacitor ga-adị ugbu a ma buru ibu, nke ga-eme ka ike dị ọkụ ma mee ngwa ngwa na-eme ka ihe dị n'akụkụ.
4. Nke a ga-ebelata ọsọ ọsọ na ndụ ọrụ nke ngwa eletriki ma mụbaa ọnwụ;ọ na-emetụta kpọmkwem ike ojiji na ọnụego ojiji nke transformer.N'otu oge ahụ, ọ ga-eme ka mkpọtụ nke transformer dịkwuo elu ma na-ebelata ndụ ọrụ nke transformer nke ukwuu.
5. Na mpaghara na ọtụtụ harmonic isi mmalite na ike okporo, ọbụna a ọnụ ọgụgụ buru ibu nke breakdowns nke esịtidem na mpụga electronic capacitors mere, na capacitors na substation ọkụ ma ọ bụ tripped.
6. Harmonics nwekwara ike ime ka nchebe relay na ọdịda ngwaọrụ akpaka, na-ebute mgbagwoju anya na nha ike.Nke a bụ mpụta nke usoro ike.Harmonics na-ebute nnukwu nnyonye anya na ngwa nzikọrịta ozi na ngwa eletrọnịkị.Ya mere, imeziwanye ogo ọkụ ọkụ nke etiti oge etiti aghọwo isi ihe na-elekwasị anya na nzaghachi.
Atọ, usoro nchikota nke etiti oge ọkụ.
1. Meziwanye ikike nke obere oge nke ebe njikọ ọha na eze nke grid ike ma belata nkwụsị nke usoro ahụ.
2. Harmonic nkwụghachi ụgwọ ugbu a na-anabata AC nzacha na nzacha na-arụ ọrụ.
3. Dịkwuo usu ọnụ ọgụgụ nke Ntụgharị ngwá iji belata harmonic ugbu a.
4. Zere resonance nke yiri capacitors na imewe nke usoro inductance.
5. A na-ejikọta ngwaọrụ na-egbochi ihe na-eme ka ọ dị elu na-ejikọta n'usoro n'usoro n'usoro nnyefe DC nke dị elu iji gbochie mgbasa nke harmonics dị elu.
7. Họrọ mma transformer wiring mode.
8. A na-ejikọta ngwá ọrụ maka ọkụ ọkụ, na-etinyekwa ihe nzacha.
Anọ, etiti ugboro ọkụ harmonic akara akụrụngwa
1. Hongyan pasive nyo ngwaọrụ.
Ngwaọrụ nzacha Hongyan.Nchedo bụ ihe mgbochi usoro capacitor, na ihe nzacha na-agafe agafe bụ nke capacitor na resistor na usoro, na ngbanwe na-ejikọta ya n'ókè ụfọdụ.Na ugboro pụrụ iche, a na-emepụta loop impedance dị ala, dị ka 250HZ.Nke a bụ nzacha harmonic nke ise.Usoro ahụ nwere ike ịkwụghachi ma harmonics na ike reactive, ma nwee usoro dị mfe.Otú ọ dị, isi mwepu nke usoro a bụ na ya nkwụghachi ụgwọ na-emetụta impedance nke okporo na na-arụ ọrụ na steeti, na ọ dị mfe resonate n'otu n'otu na usoro, n'ihi na harmonic amplification, bufee na ọbụna imebi kristal mmiri mmiri. nyo.Maka ibu na-adịgasị iche iche, ọ dị mfe ime ka nkwụghachi ụgwọ ma ọ bụ karịa.Na mgbakwunye, ọ nwere ike kwụọ ụgwọ harmonics ugboro ugboro, yana mmetụta nkwụghachi ụgwọ adịghị mma.
2. Hongyan arụ ọrụ nyo akụrụngwa
Ihe nzacha na-arụ ọrụ na-ebute mmiri nkwekọ nke nha nha yana antiphase.Jide n'aka na ugbu a dị n'akụkụ ọkụ ọkụ bụ sine ife.Echiche bụ isi bụ ịmepụta nkwụghachi ụgwọ ugbu a na otu ike dị ka ibu harmonic ugbu a ma gbanwee ọnọdụ ahụ, ma mebie ụgwọ ọrụ ugbu a na ibu harmonic ugbu a iji kpochapụ pulse ugbu a.Nke a bụ usoro mkpochapụ kwekọrọ na ngwaahịa, yana nsonaazụ nzacha dị mma karịa ihe nzacha na-agafe agafe.
3. Hongyan Harmonic Nchebe
Ihe nchekwa harmonic nhata na mmeghachi omume nke usoro capacitor.N'ihi na impedance dị nnọọ ala, nke ugbu a ga-asọba ebe a.Nke a bụ n'ezie impedance nkewa, ya mere, harmonic ugbu a ịgbanye n'ime usoro na-isi edozi.
A na-etinyekarị ihe nchebe Harmonic n'ihu akụrụngwa dị nro.Ha bụ ngwaahịa njikwa njikwa mma dị elu, nke nwere ike iguzogide mmetụta ịwa ahụ, banye 2 ~ 65 ugboro harmonics dị elu, ma chebe akụrụngwa.Njikwa nkwekọ nke sistemu njikwa ọkụ, kọmpụta, igwe onyonyo, ngwa njikwa ọsọ moto, ihe ọkụ anaghị akwụsị akwụsị, ngwa igwe CNC, ihe ndozi, ngwa ziri ezi, na usoro njikwa eletrọnịkị.Ihe nkwekọ ndị a niile na-emepụta site na ngwa eletrik na-abụghị nke linear nwere ike ime ka ọdịda dị na nkesa nkesa n'onwe ya ma ọ bụ na ngwaọrụ ejikọrọ na usoro.Ihe nchekwa nke harmonic nwere ike iwepụ harmonics na isi iyi ike, wee kpochapụ ngwa ngwa harmonics dị elu, ụda ugboro ugboro, spikes pulse, surges na nsogbu ndị ọzọ na akụrụngwa eletrik.Ihe nchekwa harmonic nwere ike ime ka ọkụ eletrik dị ọcha, chebe akụrụngwa eletriki na akụrụngwa nkwụghachi ụgwọ ọkụ, gbochie onye nchebe ka ọ ghara ịdaba na mberede, wee nọgide na-arụ ọrụ nchekwa nke ngwa eletrik na ala dị elu.
Oge nzipu: Eprel-13-2023