| 高压输电线路电弧故障检测与定位最小二乘法新解 |
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| 引用本文： | 束洪春,司大军,葛耀中. 高压输电线路电弧故障检测与定位最小二乘法新解[J]. 电工技术学报, 2000, 15(5): 63-68 |
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| 作者姓名： | 束洪春 司大军 葛耀中 |
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| 作者单位： | 1. 昆明理工大学电力工程学院 650051
2. 西安交通大学 710049 |
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| 基金项目： | 云南省科学与技术学术带头人培养基金，云南省自然科学应用基础研究基金!( 98E163M)，云南省教委科学基金!( 14 9912 0 2 4)，云南省 |
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| 摘 要： | 根据长电弧电压电流波形 ,建立了电压方波电弧的理想电压 -电流转移特性曲线和对应的电弧等效模型。对于单相接地短路故障给出了故障相电流故障分量与故障边界电流同相位的结论 ,并提出了利用高压输电线路单侧电压电流采样值和最小二乘技术对短线路及中长线路电弧故障进行检测与定位的一种时域新方法。大量故障测距数字仿真实验表明该测距算法具有较高的测距精度。
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| 关 键 词： | 输电线路 电弧故障 保护 故障测距 |
| 修稿时间： | 2000-03-28 |
A New Least Error Square Method for Detecting and Locating Arc Fault in EHV Transmission Line |
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| Shu Hongchun Si Dajun. A New Least Error Square Method for Detecting and Locating Arc Fault in EHV Transmission Line[J]. Transactions of China Electrotechnical Society, 2000, 15(5): 63-68 |
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| Authors: | Shu Hongchun Si Dajun |
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| Affiliation: | Shu Hongchun Si Dajun(Kunming University of Science and Technology 650051 China) Ge Yaozhong(Xi'an Jiaotong University 710049 China) |
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| Abstract: | According to the voltage and current waveforms of arc,an ideal voltage-current transform characteristic curve and an equivalent circuit representing for long arc have been described in this paper.Consideration of the single-phase-to-earth fault and the phase-to-phase fault,the paper draws a conclusion that the superimposed current component of fault phase has the same phase angle as the fault boundary current.A new time-domain method for locating short circuit fault on HV transmission line using one terminal voltage and current samples at one terminal and least error square method is presented.A lot of digital simulation shows the high accuracy of locating fault. |
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| Keywords: | Transmission line Arcing faults Power system protection Fault location |
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