Application of equal area criterion conditions in the time domain for out-of-step protection
Application of equal area criterion conditions in the time domain for out-of-step protection
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DOI：
10.1109/tpwrd.2009.2032326
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发表时间：
2010-01
期刊：
影响因子：
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通讯作者：
S. Paudyal;R. Gokaraju;M. Sachdev
中科院分区：
文献类型：
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作者：
S. Paudyal;R. Gokaraju;M. Sachdev
提出了一种将等面积判据条件映射到时域的失步保护新方法。稳定和失步摆动的分类是用加速和减速能量来完成的，加速和减速能量代表功率-时间曲线下的面积。所提出的方法很简单，并且克服了与以前的技术有关的一些困难。该方法仅基于继电器位置的局部可用电量，而不依赖于网络配置和参数。该算法已在单机无限总线和三机无限总线系统上进行了软件仿真测试。在硬件上实现了继电器的数字样机，并使用实时数字模拟器在闭环模式下对其性能进行了评估。仿真结果和硬件测试结果验证了该方法的有效性。
A new procedure for out-of-step protection by mapping the equal area criterion conditions to the time domain is proposed in this paper. The classification between stable and out-of-step swings is done using the accelerating and decelerating energies, which represents the area under the power-time curve. The proposed methodology is simple and overcomes some of the difficulties associated with the previous techniques. The proposed approach is based only on the local electrical quantities available at the relay location, and does not depend on the network configuration and parameters. The proposed algorithm has been tested on a single machine infinite bus and a three machine infinite bus system using software simulations. A digital prototype of the relay has also been implemented on the hardware and its performance has been assessed in a closed loop mode using a Real-Time Digital Simulator. The simulation results and the hardware testing results confirm the validity of the approach presented.