电网中故障受分布式电源影响的分析

Analysis of the Impact of DG on the Faults in the Grid

分析了分布式电源对配电网电弧的影响,针对电弧电阻是故障电流的非线性函数的特性,提出了一个新型迭代算法,并运用此方法结合IEEE34配电网计算了带有分布式电源的配电系统故障电流和电弧电阻值。分析了影响接有分布式电源的配电网故障特性的因素,给出了提高配电网安全性的建议。

This article analyses the impact of DG on the distribution grid arc. As arc resistance is a non-linear function of the fault current,it further presents a new iterative algorithm and uses this algorithm and IEEE34 power distribution network to calculate fault current and arc resistance of the distribution system with DG. It analyses the factors affecting the fault characteristics of the distribution network with DG,and gives suggestions on how to raise the safety of the distribution network.