摘 要:针对三相潮流计算中,不对称输电线路间弱耦合关系处理难的问题,引入不对称输电线路的补偿注入电流模型.并提出基于节点注入序电流的牛顿-拉夫逊法.这种方法使PQ节点对应的Jacobian矩阵成为一个常系数矩阵.避免了迭代过程中对Jacobian矩阵的更新.在迭代中通过逐次更新序电流实现潮流求解.克服了序电压变化对方程求解速度的影响.仿真结果表明,该方法较其他算法对不平衡功率、R/X比值敏感度低.能够大幅度地减少迭代次数,缩短不对称输电线路三相潮流的计算时间.
关键词:三相潮流;对称分量法;线路解耦模型;注入电流;牛顿-拉夫逊法
分类号:TM711 文献标识码:A
文章编号:1004-9649(2008)03-007-05
Three phase power flow solution based on node injection sequence currents
HE Yu-qing PENG Jian-chun
基金项目:国家自然科学基金资助项目(50677015)
作者简介:何禹清(1982-),男,湖南郴州人,硕士研究生,从事电力系统优化运行与控制研究.E-mail:gallop316@163.com
作者单位:何禹清(湖南大学电气与信息工程学院,湖南,长沙,410082)
彭建春(湖南大学电气与信息工程学院,湖南,长沙,410082)
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