| .瞬时对称分量法及其在故障暂态测距中的应用[J].电气自动化,2011,(3): |
| 瞬时对称分量法及其在故障暂态测距中的应用 |
| Instantaneous Symmetrical Component Method and Its Application on Transient Fault Location |
| |
| DOI： |
| 中文关键词: 瞬时对称分量法 故障暂态测距 微分方程 动模试验 |
| 英文关键词:instantaneous symmetrical component method transient fault location differential equation dynamic simulation test |
| 基金项目: |
|
|
| 摘要点击次数: 2898 |
| 全文下载次数: 35 |
| 中文摘要: |
| 传统基于频域范围的对称分量法不适于电力系统故障暂态变化过程的实时分析。针对该问题,提出一种基于时域分析的瞬时对称分量法,即根据三角函数变换的理论,构造旋转相量并对其进行简单的移相处理,从而获得序分量的瞬时值。以此为基础,结合故障边界条件,提出了利用瞬时故障电压和电流求取故障距离的方法。即联立各序网的时域微分方程得到故障测距方程,通过瞬时对称分量法将检测点的三相电压、电流转换为瞬时序分量,运用最小二乘法在故障一个周波后辨识出故障距离。动模试验及MATLAB分析表明,所提方法能较好的提取瞬时序分量,暂态测距效果较好,具有实用价值。随着设备采样频率的提高,测距精度将得到改善。 |
| 英文摘要: |
| The traditional symmetrical component method based on the frequency domain was unfit for the real-time analysis of the variation for the transient fault of power system.To solve this problem,this paper presented an instantaneous symmetrical component method based on time domain analysis,which was based on the theory of trigonometric function transformation,and structures rotating phasors along with simple shifting processing,as a result,the instantaneous symmetrical components were obtained.Considering of t... |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
