直流潮流计算下的孤岛处理模型
连宏汇，潘欢
（宁夏大学 物理与电子电气工程学院，宁夏 银川 750021）
摘 要：在计及潮流特性的电网连锁故障研究中，针对孤岛处理环节，建立直流潮流计算下的孤岛处理模型。当电网发生故障而造成分割，应用连通分量法判别各个孤岛；针对每个孤岛，以功率平衡为目的，进行发电站和负荷调节；为了避免潮流计算时出现奇异矩阵，增加新的类型点；使用Matpower在IEEE30节点和新英格兰39节点电力系统上进行模拟仿真，结果显示经过孤岛处理后，电网直流潮流计算收敛，证实该孤岛处理模型的有效性。
关键词：电网；孤岛；潮流计算；Matpower软件
中图分类号：TM711 文献标识码：A 文章编号：1007-3175(2018)12-0008-04
Island Processing Model Based on Direct Current Power Flow Calculation
LIAN Hong-hui, PAN Huan
（School of Physics and Electronic-Electrical Engineering, Ningxia University, Yinchuan 750021, China）
Abstract: In the research of cascading failures considering power flow characteristics, aiming at the island processing link, this paper established the island processing model based on the direct current (DC) power flow calculation. When the power grid was divided due to failure, the connected component method was used to distinguish the islands; power balance was used to adjust the power generation and load for each island; in order to avoid singular matrix in power flow calculation, new type points were added; Matpower was used to simulate the IEEE 30-bus system and the new England 39-bus system. The results show that the DC power flow calculation of the power grid is convergent after the islanding process, which verifies the validity of this island processing model.
Key words: power grid; island; power flow calculation; Matpower
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