Adaptation of Load-Frequency-Control Target Values Based on the Covariances Between Area-Control Errors
Adaptation of Load-Frequency-Control Target Values Based on the Covariances Between Area-Control Errors
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DOI：
10.1109/tpwrs.2018.2842252
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发表时间：
2018-05
影响因子：
6.6
通讯作者：
B. Polajžer;M. Petrun;J. Ritonja
中科院分区：
文献类型：
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作者：
B. Polajžer;M. Petrun;J. Ritonja
本文提出了一种参数统计模型，用于适应用于性能评估的负载频率控制(LFC)目标值。这些目标值应该以这样的方式确定，即系统频率将在目标范围内。限制系统频率的一种方法是通过增加控制激活来限制区域控制误差(ACE)的变化。另一方面，频率也可以通过控制区域之间的控制的相互协调来限定，从而影响ACE之间的协方差。现有的确定LFC目标值的模型没有考虑A之间的协方差。对于每个区域，所提出的模型分别包含了ACE之间协方差的估计值，并且固有地依赖于频率。以此方式，在控制区域中获得目标ACE范围的适当份额。在所讨论的控制区进行的广泛的现场测量证实了所提出的模型相对于现有模型在每月和在线估计LFC目标值方面的优势。
This paper proposes a parametric, statistical model for adapting the load-frequency-control (LFC) target values that are used for a performance evaluation. These target values should be determined in such a way that the system frequency will be bounded within the target range. One way of bounding the system frequency is to bound the variations of the area-control error (ACE) by increasing the control activations. On the other hand, the frequency can also be bounded by mutual coordination of the control among the control areas, thus affecting the covariances between the ACEs. Existing models for determining the LFC target values do not consider the covariances between the ACEs. The proposed model incorporates, for each area individually, the estimated value of the covariances between the ACEs and is inherently frequency dependent. In this way, appropriate shares are obtained for the target ACE ranges among the control areas. The extensive field measurements in the discussed control area confirm the advantages of the proposed model over existing models for a monthly and online estimation of the LFC target values.