I runga i te wheako o te wheako kounga mana, ina whiriwhiria e matoutātari harmonic kaha, e rua nga tauira e whakamahia nuitia ana hei whakatau tata i te kaha o te pehanga haurongo.
1.Te mana whakahaere: Whakatauhia te kaha o te whirihoranga o te mana whakahaere pai i runga i te whakarōpūtanga ahumahi me te kaha whakawhiti.
S---- Te kaha kua whakatauhia e te Kaihuri, U---- Ngaohiko kua tohua i te taha tuarua o te U-transformer
Ih---- Harmonic current, THDi----Tapeke reeti distortion o naianei, me te whānuitanga o nga uara kua whakatauhia i runga i nga momo ahumahi me nga kawenga.
K---- Reiti kawenga whakawhiti
| Momo ahumahi | Reeti paheketanga oro orite% |
| Raro, Tunnels, Tereina tere, Taunga rererangi | 15% |
| Whakawhitiwhiti, whare hokohoko, Peeke | 20% |
| Te ahumahi rongoa | 25% |
| Te hanga waka, te hanga kaipuke | 30% |
| Chemical\Petroleum | 35% |
| Te ahumahi whakarewa | 40% |
2.On te mana whakahaere: Whakatauhia te kaha o te whirihoranga o te mana whakahaere pai i runga i nga ratonga kawenga rereke.
Ih---- Harmonic au, THDi----Tapeke reeti korikori o naianei, me te whānuitanga o nga uara kua whakatauhia i runga i nga momo ahumahi me nga kawenga
K--- Reiti kawenga whakawhiti
| Momo utaina | Ihirangi haurongo angamaheni% | Momo utaina | Ihirangi haurongo angamaheni% |
| Kaihurihuri | 30---50 | Waenga auau induction whakawera hiko supply | 30---35 |
| Whakarewa | 15---30 | E ono nga tohu whakatika | 28---38 |
| rama arahina | 15---20 | Tekau ma rua te kaiwhakatika patere | 10---12 |
| Rama whakaora hiko | 15---30 | Miihini hiko | 25---58 |
| Paera hiko | 15---18 | Rererangi rererangi rererangi | 6----34 |
| Whakawhitihia te aratau mana hiko | 20---30 | UPS | 10---25 |
Tuhipoka: Ko nga tatauranga i runga ake nei he tauira whakatau tata hei tohutoro.
Ina whiriwhiri tatougenerator var pateko, e rua nga tauira e whakamahia nuitia ana hei whakatau tata i te kaha o te utunga mana reactive.
1.Te whakatau tata i runga i te kaha whakawhiti:
Ko te 20% ki te 40% o te kaha whakawhiti ka whakamahia ki te whirihora i te kaha o te kaha utu utu, me te whiringa whanui o te 30%.
Q=30%*S
Q----Reactive mana utu utu, S----Transformer kaha
Hei tauira, ko te kaitahuri 1000kVA kua rite ki te 300kvar te utu mana urupare.
2.Tatauhia i runga i te mana kaha me te kaha kaha o nga taputapu:
Mena he taipitopito tawhā utaina, penei i te kaha kaha P, tauwehe mana COSO i mua i te utu, me te tauwehe mana COSO whai muri i te utu, ka taea te tatau tika te kaha utu e hiahiatia ana mo te punaha:
Q----Reactive mana kaha utu utu, P----Maximum kaha kaha
K----Wawaenga kawenga whakarea (ka kiia ko te 0.7--0.8)
Tuhipoka: Ko nga tatauranga i runga ake nei hei tohutoro anake.
Kei te kaha a Noker Electric ki te tuku i nga kaihoko ki te utu hiko urupare nahanaha me nga otinga mana pai, nga patai mo te kowhiringa hua, ka pai koe ki te whakapiri mai ki a maatau.
Wā tuku: Tihema-08-2023