深圳大学学报理工版

为应对中国大规模互联电网的功率振荡问题, 讨论Prony法、自回归滑动平均法和随机子空间法的应用性. 分别以两区四机系统和EPRI-36节点系统等不同规模的典型仿真系统为例, 将上述方法用于明显扰动系统响应和随机扰动系统响应等典型信号的分析,提取系统振荡特征信息, 比较不同方法的应用性能, 研究存在外部测量干扰时方法的使用效果, 得到各种辨识方法在实际电网中应用性的一般结论.

In response to the power oscillation issue of China's interconnected power grids, the applicability of the Prony method, the autoregressive moving average method and the stochastic subspace method are systematically discussed in this paper. Based on the review of their elementary principles, with the two-area four-machine system and the 36-node benchmark system as examples, these methods are used to estimate the oscillation information from ringdown data and ambient data respectively. Moreover, the influence of external measurement disturbances is also considered. Finally some general conclusions about the applicability of these methods in actual power grids are drawn from the simulation cases.

引言
1 电网功率振荡辨识方法原理
2 两区四机系统仿真分析
3 EPRI-36节点系统仿真分析
4 结语

图1 两区四机系统<br/>Fig.1 Two-area four-machine system

图1 两区四机系统
Fig.1 Two-area four-machine system

表1 仿真系统运行条件设置<br/>Table 1 Simulation system operating condition setting

表1 仿真系统运行条件设置
Table 1 Simulation system operating condition setting

表2 基于明显扰动系统响应的辨识结果<br/>Table 2 Results based on ringdown data

表2 基于明显扰动系统响应的辨识结果
Table 2 Results based on ringdown data

表3 基于随机扰动系统响应的辨识结果<br/>Table 3 Results based on ambient data

表3 基于随机扰动系统响应的辨识结果
Table 3 Results based on ambient data

图2 EPRI-36节点仿真系统<br/>Fig.2 EPRI-36-node benchmark system

图2 EPRI-36节点仿真系统
Fig.2 EPRI-36-node benchmark system

图3 两种辨识方法分析结果<br/>Fig.3 Results of two approaches

图3 两种辨识方法分析结果
Fig.3 Results of two approaches

图4 加入外部干扰后随机扰动系统响应辨识结果<br/>Fig.4 (Color online)Results based on ambient signalwith disturbances

图4 加入外部干扰后随机扰动系统响应辨识结果
Fig.4 (Color online)Results based on ambient signalwith disturbances

表4 辨识用信号组合<br/>Table 4 Identification signal groups

表4 辨识用信号组合
Table 4 Identification signal groups

图5 不同信号组合辨识结果<br/>Fig.5 (Color online)Results of different signal groups

图5 不同信号组合辨识结果
Fig.5 (Color online)Results of different signal groups

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备注

引言

1 电网功率振荡辨识方法原理

2 两区四机系统仿真分析

3 EPRI-36节点系统仿真分析

4 结语

期刊信息

备注

引言

1 电网功率振荡辨识方法原理

2 两区四机系统仿真分析

3 EPRI-36节点系统仿真分析

4 结 语

期刊信息

4 结语