The out-of-step protection with prediction function for generators

Bi Daqiang, W. Xiang-heng, Xu Zhenyu, Wang Weijian
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引用次数: 1

Abstract

This paper puts forward a developed scheme against the deficiencies of the out-of-step protection based on the three-impedance element principle, which is widely applied at present. Compared with the original scheme, the developed scheme can predict the out-of-step caused by steady stability disruption or transient instability by using the least square method in advance and monitor the limit of steady stability. So the performance of the out of step protection is improved. The paper gives the whole developed protection scheme. The results of dynamic simulation experiments verify the scheme.
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带预测功能的发电机失步保护
针对目前应用广泛的三阻抗元件失步保护的不足,提出了一种改进方案。与原方案相比,该方案可以利用最小二乘法提前预测稳态破坏或暂态失稳引起的失步,并监测稳态极限。从而提高了失步保护的性能。本文给出了整个开发的保护方案。动态仿真实验结果验证了该方案的有效性。
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