A Two-Time Scale Dynamic Correction Method for Fifth-Order Generator Model Undergoing Large Disturbances
A Two-Time Scale Dynamic Correction Method for Fifth-Order Generator Model Undergoing Large Disturbances
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DOI：
10.1109/tpwrs.2015.2500438
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发表时间：
2016-09
影响因子：
6.6
通讯作者：
Ningqiang Jiang;H. Chiang
中科院分区：
文献类型：
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作者：
Ningqiang Jiang;H. Chiang
在暂态稳定分析中，五阶发电机模型忽略了定子暂态过程，可能导致与七阶模型不同的仿真结果。基于发电机的双时间尺度特性，提出了一种动态校正方法来抵消这种差异。利用奇异摄动理论，捕捉定子磁链中的快速分量，以恢复定子动态特性并校正电磁转矩。对单机无穷大系统和三机系统的仿真结果表明，该方法可以显著减小两种发电机模型之间的差异。
In transient stability analysis, the fifth-order generator model neglects the stator transients and may result in different simulation results as compared with the seventh-order model. Based on the two-time scale property of generators, a dynamic correction method is proposed to offset the difference. Using the singular perturbation theory, fast components in the stator flux linkage is captured to restore stator dynamics and correct the electromagnetic torque. Simulations on a single-machine-infinite-bus (SMIB) system and a 3-machine system show that, the difference between the two generator models can be remarkably reduced by the proposed method.