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Application and development trend of busbar busbar protection
- Categories:Zhongrui News
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- Time of issue:2019-05-28 14:07
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(Summary description)The low-impedance busbar current differential protection commonly used in China is not suitable for high-voltage busbars. When the busbar external fault is saturated, a large unbalanced current will appear in the busbar differential relay, which may cause the busbar protection to malfunction. High-impedance bus current differential protection solves this problem better, but in the internal fault of the busbar, the secondary side of the current transformer may have excessive voltage, which is unfavorable for the reliable operation of the relay, and requires the transmission of TA. The characteristics are identical and the ratio is the same, which is difficult for the substation to be expanded.
Application and development trend of busbar busbar protection
(Summary description)The low-impedance busbar current differential protection commonly used in China is not suitable for high-voltage busbars. When the busbar external fault is saturated, a large unbalanced current will appear in the busbar differential relay, which may cause the busbar protection to malfunction. High-impedance bus current differential protection solves this problem better, but in the internal fault of the busbar, the secondary side of the current transformer may have excessive voltage, which is unfavorable for the reliable operation of the relay, and requires the transmission of TA. The characteristics are identical and the ratio is the same, which is difficult for the substation to be expanded.
- Categories:Zhongrui News
- Author:
- Origin:
- Time of issue:2019-05-28 14:07
- Views:
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