| 采用同向正序基频分量的双回线故障测距原理 |
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| 引用本文： | 林富洪,王增平.采用同向正序基频分量的双回线故障测距原理[J].中国电机工程学报,2011(4). |
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| 作者姓名： | 林富洪 王增平 |
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| 作者单位： | 电力系统保护与动态安全监控教育部重点实验室(华北电力大学); |
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| 基金项目： | 国家自然科学基金重点项目(50837002)~~ |
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| 摘 要： | 提出一种采用同向正序基频分量的双回线故障定位新原理。该方法基于线路分布参数模型定义了一个双回线定位函数,当参考点在故障点前后变化时,定位函数相位会唯一发生一次阶跃,因此相位阶跃点所对应的位置即为故障发生点。采用分布参数模型使得该方法克服了分布电容的影响;该方法利用定位函数相位阶跃特性进行定位,克服了故障电阻的影响,因此适用于非线性电阻故障且具有良好的快速性;采用同向正序基频分量进行定位,适用于各种双回线故障类型和整个故障期间的定位。PSCAD/EMTDC仿真结果验证了该方法的正确性。
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| 关 键 词： | 定位函数 同杆双回线 同向正序基频分量 相位阶跃特性 |
Fault Locating Method Based on Two-terminal Common Positive Sequence Fundamental Frequency Component for Parallel Transmission Line |
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| LIN Fuhong,WANG Zengping,Ministry of Education,Changping District,Beijing ,China.Fault Locating Method Based on Two-terminal Common Positive Sequence Fundamental Frequency Component for Parallel Transmission Line[J].Proceedings of the CSEE,2011(4). |
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| Authors: | LIN Fuhong WANG Zengping Ministry of Education Changping District Beijing China |
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| Affiliation: | LIN Fuhong,WANG Zengping(Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control(North China Electric Power University),Ministry of Education,Changping District,Beijing 102206,China) |
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| Abstract: | A novel parallel transmission line fault location method based on positive sequence fundamental frequency component was proposed.In the method a parallel transmission line fault location function was defined based on distributed parameter transmission line model.The phase of the fault location function will have only one step jump when the reference point changes from the left to the right of the fault.So the position where the fault location function has a step jump is the fault position.The method is immu... |
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| Keywords: | fault locating function parallel transmission line common positive sequence fundamental frequency component phase step jump characteristic |
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