考虑电流不平衡度的低压配电网三相不平衡影响机理研究

Study on Influence Mechanism of Three-phase Unbalance of Low Voltage Distribution Network Considering Current Imbalance

我国低压配电网中,由于负载不平衡、线路参数不平衡和分布式电源接入等因素,三相不平衡问题突出,降低了配电网运行经济性和安全性。以电流不平衡度为评估指标,通过仿真分析,对以上三方面影响因素的作用机理进行研究,结论中关于负载、配电线路和分布式电源规划的建议,对配电网三相不平衡的治理具有一定的参考价值。

n China's low-voltage distribution network, due to factors such as unbalanced load, unbalanced line parameters and distributed generators, the three-phase unbalance problem is prominent, which reduces the economic and safety of the distribution network. The current imbalance was taken as the evaluation index and the mechanism of the above three influencing factors was studied in this paper through simulation analysis. The advice concluded on the planning of load,line and distributed generators can be referred for the solution of three-phase unbalance problem in distribution network.