A new PMU-based fault detection/location technique for transmission lines with consideration of arcing fault discrimination-part II: performance evaluation
A new PMU-based fault detection/location technique for transmission lines with consideration of arcing fault discrimination-part II: performance evaluation
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考虑电弧故障判别的基于PMU的新型输电线路故障检测/定位技术第二部分：性能评估
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
Ching
中科院分区：
文献类型：
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作者：
Ying;Chih;Ching
所提出的技术的理论和算法已经在这两篇论文集的第一部分。在这两篇论文集的第二部分中，所提出的技术通过Matlab/Power System Blockset仿真器模拟的大量仿真案例进行评估。对于建议的故障检测器，跳闸时间可以达到3.25 ms和跳闸时间的平均值约为8 ms的输电线路上的永久性故障和电弧故障。对于建议的故障定位器，准确度可达99.99%，误差不超过0.45%。此外，建议的电弧故障测距仪可以区分电弧和永久性故障在故障开始后的四个周期内。在计算机仿真中，该方法被证明是在永久性故障上闭锁重合闸的有效工具。仿真结果还表明，所提出的扩展离散傅里叶变换算法有效地消除了指数衰减的直流偏移对基波和谐波相量计算造成的误差。最后，使用实际测量数据的测试案例证明了所提出技术的可行性。
The theory and algorithms of the proposed technique have been presented in Part I of this two-paper set. In Part II of this two-paper set, the proposed technique is evaluated by considerable simulation cases simulated by the Matlab/Power system Blockset simulator. For the proposed fault detector, the trip time achieved can be up to 3.25 ms and the average value of trip times is about 8 ms for both permanent and arcing faults on transmission lines. For the proposed fault locator, the accuracy can be up to 99.99% and the error does not exceed 0.45%. Moreover, the proposed arcing fault discriminator can discriminate between arcing and permanent faults within four cycles after fault inception. It has proven to be an effective tool to block reclosing on the permanent faults in the computer simulations. The simulation results also demonstrate that the presented extended discrete Fourier transform algorithm eliminates effectively the error caused by exponentially decaying dc offset on fundamental and harmonic phasor computations. Finally, a test case using the real-life measured data proves the feasibility of the proposed technique.