摘要
在地区电网模型拼接过程中,由于边界联络线处的电量和内网并不匹配,各分块模型不能直接拼接。针对该问题,采用基于节点间电气距离的灵敏度校正方法进行边界潮流调整。该方法以有功潮流方程中有功功率相对电压相角变化率的倒数来度量节点间的电气距离,选取与边界节点电气距离较小的节点作为可调节节点,利用灵敏度校正方法交替进行迭代,可使偏差逐渐减小到要求的精度内。该方法仅选取部分对边界节点影响较大的节点作为可调节节点,并不会增加迭代计算的次数,还能够减小工作量。应用IEEE39节点系统验证了该算法的有效性。
In integrating process of area models, the sub-block models can not be directly integrated because the electricity varlaole at the border and internal network do not match. Therefore, the method of sensitivity flow adjusting based on electrical distance is proposed. In this method, the distance among the nodes is measured by the derivative of the active power change rate along with the voltage phase change. Selecting the nodes with the smaller electrical distance from the boundary nodes as the adjusted nodes, then alternating iteration using the sensitivity correction can reduce the bias to within the required accuracy gradually. It only selects part of the nodes having a greater influence on the border as adjusted nodes, which does not increase the times of computation, but also can reduce the workload. The application based on IEEE 39 bus system verifies the effectiveness of the algorithm.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2013年第18期83-88,共6页
Power System Protection and Control
关键词
电气距离
可调节点
模型拼接
灵敏度校正法
潮流调整
electrical distance
adjusted nodes
integration of models
sensitivity correction
flow adjusting
