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| 摘要: |
| 通过一个工程实例说明变压器失灵保护电流互感器(TA)设置的改进方法。对比文中的两种设计方案，提出了改进方案，尽量选择靠近断路器处的TA，而且和母线保护用TA进行有效的“交叉”．确实可避免失灵保护可能存在的灵敏度不足的问题，在工程设计有条件时可以采用。 |
| 关键词: 失灵保护 电流互感器 变压器 母线保护 断路器 TA 灵敏度 设置 交叉 设计方案 |
| DOI： |
| 分类号:TM561 TM452 |
| 基金项目: |
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| Improved allocation of CT for transformer failure protection |
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ZHENG Bin CHENG Peng
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| Abstract: |
| An improved allocation of CT for transformer failure protection is presented with a practical engineering project. Two design schemes are compared. The improved scheme,which allocates CT near the circuit breaker as possible and forms an effective crossing with busbar protection, can avoid the probable sensitivity deficiency of failure protection. The improved scheme can be applied in some engineering designs. |
| Key words: transformer protection,failure protection,allocation of CT, |
