基于三维可视图的地区电网电压凹陷评估  

Assessment of Regional Power Grid Voltage Sag Based on the 3D Visual Graph

作　　者：郑斌[1] 陈铁敏[1] 魏琼[1] 林思海[1] 

机构地区：[1]上海市电力公司检修公司变电运维中心,上海200063

出　　处：《电力与能源》2013年第1期51-55,共5页Power & Energy

摘　　要：针对用电压凹陷矩阵来表示电网发生故障时产生的电压凹陷不够直观的问题,提出了在改进故障点法基础上用三维可视图来表示电压凹陷的方法,实现在多节点电网中可以直观地看出电网发生电压凹陷的节点及电压凹陷的深度。根据电压凹陷深度和故障距离的关系曲线对传输线分区,在每条传输线上设置有限个故障点,计算每个故障点上发生短路故障时,每个节点的电压凹陷深度,并通过每个故障点的故障概率分布来评估不同电压凹陷深度区间的凹陷频次,绘制电压凹陷的三维可视图。提出的方法应用于IEEE 30节点标准测试系统,验证了该方法的正确性和实用性。Due to the problem that voltage sag matrix is not visual when faults happen,a new assessment method of regional power grid voltage sag based on the three-dimensional visual graph is proposed.It can visually see the node of voltage sag and voltage sag depth in multi-node grid.Set finite faults according to the relationship of voltage sag depth and fault distance on transmission line,and calculate the voltage sag depth of each node.We can assess voltage sag frequency of different area through fault probability distribution of each fault and draw 3D visual graph.The method is applied to the IEEE-30 node test system to prove its correctness and practicability.

关 键 词：电压凹陷矩阵 三维可视图 电压凹陷深度 IEEE30节点标准测试系统 

分 类 号：TM711[电气工程—电力系统及自动化]