Effective Two-terminal Numerical Algorithm for Overhead Lines Protection

Effective Two-terminal Numerical Algorithm for Overhead Lines Protection
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有效的架空线路保护二端数值算法

DOI:
10.1007/s00202-006-0014-6
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发表时间:
2006
影响因子:
1.8
通讯作者:
Radojevic Z
Radojevic Z
中科院分区:
工程技术4区
文献类型:
--
作者:
Radojevic Z

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本文提出了一种有效的架空线路保护,特别是故障定位和自适应重合闸的数值算法。它是基于两端线路电流和电压的采集。为此,假定所有模拟输入变量同步采样,即应用全球定位系统/相量测量装置。该算法是在谱域中推导出来的。由此,还使用三次谐波变量和线路参数的集合。成功实现自适应自动重合闸功能的先决条件是电弧的适当建模。电弧被认为是高次谐波的来源,被其他电气变量扭曲。在电弧建模中,使用了实验室测试的结果。算法测试一个典型的网络配置,假设这条线考虑足够短,忽略其电容性质。基于所得到的结果,这是非常现实的,该算法可以在现代智能电子设备(IED)的实际实施。
In the paper an effective numerical algorithm for overhead lines protection, particularly fault location and adaptive autoreclosure, is presented. It is based on the two terminal line currents and voltages acquisition. For this purposes the synchronized sampling of all analogue input variables, i.e. the application of the Global Position System/Phasor Measurement Units, was assumed. The algorithm presented is derived in the spectral domain. By this the set of third harmonics variables and line parameters was also used. The prerequisite for successfully adaptive autoreclosure functionality realization was the suitable modelling of the electrical arc. Arc was considered as a source of higher harmonics, distorting by this other electrical variables. In the arc modelling, results of laboratory testing were used. Algorithm is tested for a typical network configuration, assuming by this that the line considered was short enough to neglect its capacitive nature. Based on the results obtained, it is very realistic that the algorithm presented could be implemented in praxis in modern Intelligent Electronic Devices (IEDs).
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发表时间: 1999
影响因子: 4.4
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