| 利用故障分量瞬时值的电流纵差保护新判据 |
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| 引用本文： | 高厚磊. 利用故障分量瞬时值的电流纵差保护新判据[J]. 电力系统自动化, 2000, 24(16): 21-24,54 |
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| 作者姓名： | 高厚磊 |
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| 作者单位： | 山东工业大学电力学院， 济南 250061 |
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| 基金项目： | 国家重点技术发展项目专项课题!(96 BK- 10 6 - 4- 1) |
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| 摘 要： | GPS时钟同步技术在电流纵差保护中的成功应用，为利用瞬时值进行动作判定提供了条件。针对工频相量差动判据存在的问题，提出一种基于故障分量瞬时值的电流纵差保护新判据。该判据在保证区外故障稳定性的基础上，对区内故障特别是高阻故障具有很强的反应能力和较快的动作速度。基于EMTP的数字仿真结果和动模试验均验证了该判据的正确性。
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| 关 键 词： | 电流差动保护； 动作判据； 故障分量； 瞬时值 |
| 收稿时间： | 1900-01-01 |
| 修稿时间： | 1900-01-01 |
A NEW CRITERION FOR LINE CURRENT DIFFERENTIAL PROTECTION BY USING INSTANTANEOUS VALUE OF FAULT COMPONENT |
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| Gao H oulei Shandong University of Technology,Ji'nan ,China. A NEW CRITERION FOR LINE CURRENT DIFFERENTIAL PROTECTION BY USING INSTANTANEOUS VALUE OF FAULT COMPONENT[J]. Automation of Electric Power Systems, 2000, 24(16): 21-24,54 |
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| Authors: | Gao H oulei Shandong University of Technology Ji'nan China |
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| Affiliation: | Gao H oulei Shandong University of Technology,Ji'nan 2 5 0 0 6 1,China |
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| Abstract: | Since the GPS based clock synchronization technique has been successfully applied in line current differential protection,it's possible to make tripping decision by using instantaneous value of fault component.To solve the problems existing in conventional phasor differential criterion,this paper proposes a new criterion based on the instantaneous value of fault com ponent. On the basis of keeping stable against external faults,this criterion has the features of strong ability to response to internal faults,especially to the high resistance faults.Both the EMTP sim ulation and dynam ic simulation test have shown its correctness. This is the project of State Key Technology Development Program No.96 BK- 10 6 - 4- 1 . |
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| Keywords: | current differential protection operating criterion fault component instantaneous value |
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