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2021-01-05
The selection of reactance ratio of series reactor
- Categories:Industry news
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- Time of issue:2021-12-31
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(Summary description)The choice of reactance ratio also depends on the harmonic background:
1 The background harmonic at the access point of the capacitor device is the 3rd order
1) If the third harmonic content is small, a series reactor of 0.1% to 1% can be selected, but it should be checked whether the third harmonic amplification exceeds or is close to the national standard limit after the capacitor device is put into use, and there is a certain margin.
串联电抗器的电抗率选取
串联电抗器的电抗率选取
The selection of reactance ratio of series reactor
(Summary description)The choice of reactance ratio also depends on the harmonic background:
1 The background harmonic at the access point of the capacitor device is the 3rd order
1) If the third harmonic content is small, a series reactor of 0.1% to 1% can be selected, but it should be checked whether the third harmonic amplification exceeds or is close to the national standard limit after the capacitor device is put into use, and there is a certain margin.
- Categories:Industry news
- Author:
- Origin:
- Time of issue:2021-12-31
- Views:0
Information
The choice of reactance ratio also depends on the harmonic background:
1 The background harmonic at the access point of the capacitor device is the 3rd order
1) If the third harmonic content is small, a series reactor of 0.1% to 1% can be selected, but it should be checked whether the third harmonic amplification exceeds or is close to the national standard limit after the capacitor device is put into use, and there is a certain margin.
2) The 3rd harmonic content is relatively large, which has exceeded or is close to the national standard limit. Choose a series reactor of 12% or 13% and 4.5% to 6%.
2 The background harmonics at the access point of the capacitor device are the 3rd and 5th times
1) The 3rd harmonic content is very small, and the 5th harmonic content is relatively large (including exceeding or close to the national standard limit), choose a series reactor of 4.5% to 6%, and avoid using a series reactor of 0.1% to 1% .
2) The 3rd harmonic content is slightly larger, and the 5th harmonic content is smaller. Choose a series reactor of 0.1% to 1%, but it should be checked whether the 3rd harmonic amplification exceeds or is close to the national standard limit after the capacitor device is put into operation, and There is a certain margin.
3) The 3rd harmonic content is relatively large, which has exceeded or is close to the national standard limit, choose 12% or 12% and 4.5% ~ 6% series reactor mixed installation.
3 The background harmonics at the access point of the capacitor device are the 5th order and above
1) The 5th harmonic content is small, and a series reactor of 4.5% to 6% should be selected.
2) The 5th harmonic content is relatively large, and a 4.5% series reactor should be selected.
4 For series reactors using 0.1% to 1%, it is necessary to prevent serious amplification or resonance of the 5th and 7th harmonics; Amplify or resonate.
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