摘要
针对多支路断开后引起的有功潮流转移问题,定义并提出一种基于虚拟支路模型与潮流越限风险指数的多支路同时开断输电断面搜索新方法。建立了双支路断开的潮流转移虚拟模型:在双支路断开时,将其等效为一条虚拟支路,并结合有功潮流的虚拟折返过程推导出等效支路的虚拟开断分布系数;多支路同时断开时,在双支路断开的基础上,将虚拟支路与第三条支路组成虚拟双支路模型,推导出下一代虚拟支路的开断分布系数。结合虚拟开断分布系数定义得到各线路的潮流越限风险指数,通过线路的潮流越限风险指数对潮流转移区域中的线路进行筛选,得到组成输电断面的所有支路。通过IEEE39节点系统进行仿真计算,结果表明,本文所提方法在保证结果准确性的前提下,较其他方法更加具有时效性。
To the power flow transfer problem caused by multi-branch disconnection,a new algorithm for searching transmission section based on virtual branch model and flow exceeding risk index is proposed when multi-branch is disconnected at the same time.Based on the disconnection of the double branch a virtual model of power flow transfer is established when multiple branches are disconnected.When the double branches are disconnected,it is considered as equivalent to a virtual branch,and the virtual breaking distribution coefficient of the virtual branch is derived by the virtual trend reentry process of the active power flow.When multiple branches are disconnected,on the basis of the disconnection of the double branch,the virtual branch and the third branch are made to form a new double branch model and then the virtual breaking distribution coefficient of the next generation virtual branch is derived.The virtual breaking distribution coefficient defines the evaluation index of flow exceeding risk index and the index is used to sort each branch in the power flow transfer area,thus obtaining the branches constituting the transmission section.The validity of the proposed algorithm is verified in the IEEE39 node system.
作者
程若发
付鑫
CHENG Ruo-fa;FU Xin(School of Information Engineering,Nanchang Hangkong University,Nanchang 330063,China)
出处
《电工电能新技术》
CSCD
北大核心
2020年第7期62-71,共10页
Advanced Technology of Electrical Engineering and Energy
基金
国家自然科学基金项目(51567019)
江西省教育厅科学技术项目(GJJ150757)。
关键词
虚拟开断分布系数
潮流越限风险指数
输电断面
潮流转移区域
虚拟潮流折返
virtual breaking distribution coefficient
flow exceeding risk index
transmission section
power flow transfer area
virtual trend reentry
