N'ihi mkpa nke mmepụta, e nwere ọnụ ọgụgụ dị ukwuu nke mgbapụta ibu na ụlọ ọrụ petrochemical, na ọtụtụ ihe mgbapụta na-eji ihe ntụgharị ugboro ugboro.Ọnụ ọgụgụ dị ukwuu nke ngwa nke ndị na-emegharị ugboro ugboro na-eme ka ọdịnaya kwekọrọ na nkesa nkesa na ụlọ ọrụ petrochemical.Ka ọ dị ugbu a, ọtụtụ njikọ nrụzi nke ndị ntụgharị ugboro bụ ngwa nke 6 pulse rectifier iji tọghata AC ka ọ bụrụ DC.Ya mere, harmonics emepụtara na-abụkarị 5th, 7th na 11th harmonics.
1. Nyocha nke njirimara ibu na ụlọ ọrụ mmanụ
Ihe karịrị 85% nke ibu ike na grid ụlọ ọrụ mmanụ bụ ibu inductive, dị ka nfuli mmanụ dị iche iche, moto na ihe ndị ọzọ.N'ime afọ ndị na-adịbeghị anya, dị ka ala mmanụ ahụ na-ebute ihe ndị dị elu maka nchekwa nchekwa ike, ọtụtụ nkeji anabatala ọnụ ọgụgụ dị ukwuu nke ngwaọrụ nchekwa ike.N'ihi mmetụta nchekwa ike ya doro anya, ngbanwe dị mfe, nhazi dị mfe na netwọk, ejirila ihe ntụgharị ugboro ugboro na-erigbu mmanụ.A na-ebugharị mgbapụta, mgbapụta, mgbapụta mgbada na igwe na-agwakọta n'ọdụ ụgbọ mmiri na-emepụta mmanụ site na ntụgharị ugboro ugboro, mana onye na-emegharị ugboro ugboro ga-emepụta ọnụ ọgụgụ dị ukwuu nke harmonics iji gbochie ibu ahụ na akụrụngwa dị n'akụkụ ya, na harmonics ga-emekwa. na-emetụta grid ike ọha site na eriri ntinye ọkụ.
2. Mmebi nke harmonics na mmanụ ubi ike okporo
1) Harmonics na-emetụta ọrụ kwụsiri ike nke grid mmanụ mmanụ ma belata ogo ọkọnọ ike nke grid mmanụ ọkụ.
2) Harmonics na-abawanye ike mfu nke capacitor, na-ebelata ndụ ọrụ nke capacitor ike, na n'ihe gbasara harmonics siri ike, ọ ga-emekwa ka capacitor gbasaa, nkwụsị ma ọ bụ mgbawa.Harmonics nwekwara ike ime ka mfu ọkụ nke transformer dịkwuo elu.
3) Harmonics ga-eme ka mfu ọkụ nke moto na-agbanwe agbanwe na-abawanye, na-eme ka ikpo ọkụ na-ekpo ọkụ, na-emepụta vibration n'ibu, mkpọtụ na harmonic overvoltage, nke ga-ebelata ndụ nke ngwá ọrụ, na ọbụna mmebi n'ọnọdụ ndị siri ike;Harmonics ga-ebute mmejọ nchedo relay ma ọ bụ omume jụrụ;A na-ejikọta harmonics dị na sistemụ ike na usoro adịghị ike ugbu a site na induction electromagnetic, electrostatic induction na conduction, nke ga-ebutekwa nnyonye anya na usoro adịghị ike ugbu a.
Site n'iji ihe ntụgharị ugboro ugboro na usoro ntinye mmiri nke mmanụ, ọ bụghị naanị na-edozi nsogbu nke mgbanwe nrụgide mmiri ọgwụ ọdịnala, oriri ike dị elu na arụmọrụ dị ala, ma na-ewetakwa mmụba nke ọdịnaya harmonic na grid ike.Ịdị adị nke ọnụ ọgụgụ dị ukwuu nke harmonics na-atụ egwu ntụkwasị obi na nchekwa nke usoro ọkụ ọkụ.Iji kpochapụ mmerụ ahụ site na harmonics, iji mmepụta ihe, melite ogo ọkụ ọkụ nke grid ike, iji hụ na mmepụta nkịtị.
Noker Electric(/basara-anyị/) nzacha harmonic na-arụ ọrụsite na teknụzụ IGBT ọkwa 3 ọgbara ọhụrụ, bụ ngwaahịa njikwa nkwekọ zuru oke.Nkwado ọ bụla, kpọtụrụ anyị n'efu.Anyị ga-enye gị ngwọta nhazi.
Oge nzipu: Jun-30-2023