| 母线保护中电流互感器饱和检测新判据 |
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| 引用本文： | 罗姗姗,贺家李.母线保护中电流互感器饱和检测新判据[J].电力系统及其自动化学报,1996,8(3):29-36. |
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| 作者姓名： | 罗姗姗 贺家李 |
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| 作者单位： | 天津大学电力及自动化工程系 |
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| 摘 要： | 基于瞬时值差动的母线保护由于受电流互感器饱和的影响而容易误动作。本文提出一种新型判据可用于检测ＣＴ饱和，一旦检测到ＣＴ饱和，就停止瞬时值差动计算，改用向量差动或插入延时。仿真结果表明新判据能够正确灵敏地检测出ＣＴ饱和时刻。
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| 关 键 词： | 电流互感器 母线保护 检测 |
A NEW CRITERION OF DETECTING CT SATURATION |
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| Luo Shanshan,He Jiali,Wang Rongqin.A NEW CRITERION OF DETECTING CT SATURATION[J].Proceedings of the CSU-EPSA,1996,8(3):29-36. |
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| Authors: | Luo Shanshan He Jiali Wang Rongqin |
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| Affiliation: | Tianjin University |
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| Abstract: | Bus differential protection based on instantaneous values may make wrong decision because of CT saturation. This paper proposes a new criterion of detecting CT saturation. When CT saturation is found, bus differential calculation is stoped and a time delay may be inserted to avoid maloperation of the protection. The result of simulation shows that the new criterion can detect point of CT saturation sensitively and correctly. |
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| Keywords: | Current transformer (CT) Bus protection |
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