| 引用本文: | 张力晨,周良松,代仕勇,吴勇.考虑群内运动和阻尼影响的系统模型研究[J].电力自动化设备,2005,(4):47-50 |
| .Research on system model considering in-cluster motion and damping[J].Electric Power Automation Equipment,2005,(4):47-50 |
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| 摘要: |
| 基于二群失稳模式提出了一种新的系统模型，计及了群内发电机的相对运动，并考虑了阻尼因素。假设同一机群内任意2台发电机转子角度相对该群的摆动呈线性关系，并据此对模型中的电磁功率表达式进行了化简。利用短时时域仿真数据作为输入，采用系统辨识法辨识模型参数，无需预先知道阻尼系数和机械惯性时间常数。对新英格兰10机39节点系统的仿真计算验证了该方法的准确性。该模型可应用于在线稳定预测。 |
| 关键词: 二群失稳模式 系统辨识 暂态稳定预测 |
| DOI： |
| 分类号:TM712 TM743 |
| 基金项目: |
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| Research on system model considering in-cluster motion and damping |
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ZHANG Li-Chen ZHOU Liang-song DAI Shi-yong WU Yong
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| Abstract: |
| A new system model is presented based on two-cluster instability mode, which considersthe relative motion in one cluster and the factor of damping. On the assumption that the rotator angle swing of any two generators in the same cluster is linear,the electromagnetic power expression in the model is simplified. It takes short-period time-domain simulative data as inputs,and system identification theory is applied in computing model parameters. The damping coefficient and inertia time constant of generator may be unknown beforehand. Simulation on New England 39-bus system illustrates the veracity of the proposed method. The model can be used in on-line stability prediction. |
| Key words: two cluster instability mode,system identification,transient stability prediction |
