考虑泵类负荷特性的低压配电网潮流计算

提出了一种考虑泵类负荷特性的低压配电网潮流计算方法。通过将泵类负荷的电动机转矩平衡方程和配电网各节点功率平衡方程组合起来,构成了考虑泵类负荷特性的低压配电网潮流计算模型。在求解配电网潮流计算的牛拉法的基础上,提出通过将泵类负荷电动机转矩平衡方程与各节点功率平衡方程进行统一迭代和交替迭代两种方法进行求解。通过对实际低压配电网台区的计算分析,验证了该方法能获得更加准确的配网负荷节点电压,而且能够获得泵类负荷正常运行时和启动时的节点电压。

Power flow calculation of low voltage distribution network including pump loads

This paper presents a method of power flow calculation for low voltage distribution network including pump loads. By combining torque balancing equations of induction motors in pump loads and power balance equations of each node in distribution network, the low-voltage distribution network power flow calculation model including pump load characteristics is constituted. Based on the Newton-Raphson algorithm of solving the distribution network power flow calculation, two methods of uniform iteration and alternating iteration of pump load motor torque balance equations with each node power balance equations are proposed to solve the problem. The numerical results of real low voltage distribution networks show that the proposed method can obtain load nodes voltage more accurately, and it can get the node voltage of pump loads during normal operation and startup.