【摘要】 针对传统大型发电机失步预测保护所存在的问题 ,并根据不同预测原理在实际应用中的优缺点 ,提出了一种综合保护方案。在正常情况下 ,静态稳定监视 ;扰动发生后 ,由网络拓扑分析来确定相应的预测方法。通过数字仿真分析 ,表明这种方案能够快速、及时地预测发电机是否将要失步 ,并采取相应的抑制措施。基于此方法实现的失步预测保护与传统的保护相比 ,物理概念明确 ,对失步的预测及判别更加完善更多还原

【Abstract】 This paper presents a comprehensive method based on different conditions after disturbance to avoid the problems caused by the traditional prediction for out- of- step protection.At the normal operating point,static stability is supervised. After the disturbance,whether the network is changed will be determined and a corresponding prediction method based on real time measurements and theory analysis will be applied.The digital simulation result shows that the method is effective and high in accuracy.更多还原