基于电流分布的电网功率分布因子的计算

Algorithm of Power Distribution Factor Based on Current Distribution

基于经典电路理论提出电网电流分布理论,并以此为基础,得出了电源负荷分配因子和负荷电源汲取因子的解析模型及求解算法,揭示了发电机与负荷间的直接的功率传递关系。最后,通过分配功率与汲取功率之间的差额得到任一电源到负荷传输功率过程中的功率损耗。该方法在IEEE 3机9节点系统上进行了应用,其结果证实了算法的正确性和有效性。此算法为输电设备的使用份额以及输电过网费用的计算提供了合理的依据。

This paper proposes a current distribution theory based on classical circuit theory.And this paper established analytical model and algorithm of the distribution factors and the extraction factors on the basis of the current distribution theory,which makes clear the power-transfer relation between generators and loads.Finally,the losses produced in the process of power transmission between the specific generator and load can be obtained by calculating the difference between the distribution power and the extracted power.The proposed method was tested on the classical IEEE 3-generator 9-bus system.The simulation results show that the algorithm is correct and effective.The algorithm provides a basis for the calculation of sharing cost of transmission facilities and the wheeling cost of power flow.