跨区域互联电网的可用输电能力计算方法

发布时间：2018-06-13 13:09

本文选题：可用输电能力 + 跨区域电网　；参考：《电力系统自动化》2017年15期

【摘要】：为确保电网安全,保证跨区域电力交易的正常进行,提出了计算跨区域互联电网可用输电能力的方法。相比于其他方法,该方法仅需交换边界节点电压和购电用户有功负荷增长量即可准确地计算出跨区域互联电网的可用输电能力。首先,建立了适用于可用输电能力计算的外网等值模型,使各个区域从互联电网中解耦。同时,建立了虚拟的平衡节点和自动调节的边界注入功率,使各个区域可以进行独立的潮流计算。然后,采用分布式潮流计算对区域电网的潮流进行校正,旨在减小各个区域电网潮流计算的偏差。最后,根据定义计算出了跨区域互联电网的可用输电能力。通过IEEE 118节点系统的仿真计算,证明了该方法的有效性和准确性。
[Abstract]:In order to ensure the security of the power network and ensure the normal conduct of the transregional power transaction, a method for calculating the available transmission capacity of the cross-region interconnected power network is proposed. Compared with other methods, the proposed method can accurately calculate the available transmission capacity of a cross-region interconnected power network by simply switching the boundary node voltage and increasing the active power load of the customers. Firstly, an equivalent model of external network is established, which is suitable for the calculation of available transmission capacity, which decouples each region from the interconnected power network. At the same time, the virtual balance node and the self-regulated boundary injection power are established, which makes the power flow calculation of each region independent. Then, the distributed power flow calculation is used to correct the power flow of the regional power network, in order to reduce the deviation of the power flow calculation. Finally, according to the definition, the available transmission capacity of cross-regional interconnected power network is calculated. The simulation results of IEEE 118 bus system show that the method is effective and accurate.
【作者单位】：强电磁工程与新技术国家重点实验室(华中科技大学);华中科技大学电气与电子工程学院;
【基金】：国家自然科学基金资助项目(51377068)~~
【分类号】：TM74

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