Calculation of TTC for multi-area power systems based on improved Ward-PV equivalents
Calculation of TTC for multi-area power systems based on improved Ward-PV equivalents
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DOI：
10.1049/iet-gtd.2016.1005
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发表时间：
2017-03
影响因子：
2.5
通讯作者：
Shaoxiang Xu;S. Miao
中科院分区：
文献类型：
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作者：
Shaoxiang Xu;S. Miao
多区域电力系统有限的信息交换限制了总输电能力（TTC）的计算。提出了一种基于改进Ward-PV等值的多区域TTC计算方法。在这项研究中，只有边界总线电压和预测需要在计算过程中的各个区域之间进行交换。提出了一种改进的Ward-PV外网等值网络分解方法。在各区域的TTC计算中，采用了带自适应预测器的重复潮流算法。每个区域使用网络等效模型通过RPF计算自己的TTC。在TTC计算过程中，采用改进的分布式潮流法作为修正算法，对各个区域的潮流进行调整。所提出的方法进行了验证的IEEE 118节点系统的所有操作限制和分支N-1的意外考虑。实验结果表明了该方法的有效性和准确性。
The total transfer capability (TTC) calculation is restricted by limited information exchanges in multi-area power systems. This study presents a multi-area TTC calculation method based on improved Ward-PV equivalents. In this study, only boundary bus voltages and predictors need to be exchanged between individual areas during the calculation. An improved Ward-PV external network equivalent is proposed as a network decomposition approach. The repeated power flow (RPF) algorithm with a self-adaptive predictor is implemented in each area's TTC calculation. Each area uses network equivalent models to calculate its own TTC via RPF. A modified distributed power flow method is employed as a correction algorithm to adjust power flow in all individual areas during the TTC calculation. The proposed method is verified on the IEEE 118-bus system with all operating limits and branch N − 1 contingencies considered. Results demonstrate the validity and the accuracy of this method.