一种简单可靠的轴系扭振监测方法的研究

Studies on a Simple and Reliable Method for Shaft Torsional Monitoring

提出了根据发电机端电压和端电流的测量值再现电网扰动过程中发电机电磁转矩的新方法，比现有的方法在精度上有较大提高．以再现的电磁转矩作为激励，采用Ｒｉｃｃａｔｉ传递矩阵法求解轴系扭振暂态响应，求解快速，数值稳定，计算结果与电磁暂态程序ＥＭＴＰ的仿真结果吻合较好．在此基础上提出了一种简单可靠的汽轮发电机组轴系扭振监测方法．

This paper presents a new method of calculating generator electrical torque using generator terminal voltage and current signals. The proposed method has a higher accuracy than previous methods. Riccati transfer matrix is used to calculate transient response on shaft system torsional vibration. The results fit well with the EMTP simulation. Based on the above work, a simple and reliable turbine generator shaft torsional vibration monitoring method is presented.