基于电压为线性函数的开断潮流计算及开断函数选择  

Breaking power flow calculation based on linear voltage function and breaking function selection

作　　者：吴成业 李飞 刘光晔[2] WU Chengye;LI Fei;LIU Guangye(College of Electrical and Information Engineering,Anhui University of Technology,Maanshan 243032,China;College of Electrical and Information Engineering,Hunan University,Changsha 410082,China)

机构地区：[1]安徽工业大学电气与信息工程学院,安徽马鞍山243032 [2]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《电力自动化设备》2020年第10期200-204,211,共6页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(51577053);国家自然科学青年基金资助项目(61903003)。

摘　　要：为进行快速开断潮流计算,可将电力系统节点电压展开为关于开断支路导纳的泰勒级数,若采用简单的线性开断函数,由于节点电压与支路导纳之间有很强的非线性关系,电压泰勒级数收敛非常缓慢。通过严格的数学推理,提出一种使节点电压与开断支路导纳呈线性关系的开断函数,并证明该开断函数的存在性及唯一性。由线性电压函数可快速精确地计算开断系统的潮流。对IEEE 14节点系统的仿真结果验证了所提方法的正确性。The node voltage of power system can be expanded to Taylor series of breaking branch admittance for fast breaking power flow calculation,if a simple linear breaking function is adopted,the voltage Taylor series converges very slowly because of the strong nonlinear relationship between node voltage and branch admittance.Through strict mathematical reasoning,a breaking function which makes the node voltage linearly related to the breaking branch admittance is proposed,and its existence and uniqueness are verified.The power flow of breaking system can be calculated fast and accurately by the linear voltage function.The simulative results of IEEE 14-bus system verify the correctness of the proposed method.

关 键 词：开断潮流计算 静态安全 开断函数 线性电压函数 

分 类 号：TM71[电气工程—电力系统及自动化]