基于虚拟支路模型与FTIL的多支路开断潮流转移搜索新算法

发布时间：2018-05-18 18:19

本文选题：虚拟支路模型 + 潮流转移密集度　；参考：《电网技术》2017年01期

【摘要】：针对多支路开断后有功潮流转移问题,给出了一种基于虚拟支路模型与潮流转移密集度(FTIL)的多支路开断潮流转移搜索新算法。在双支路开断的基础上,给出了多支路开断潮流转移的虚拟支路模型:首先将2条开断支路等效为一条虚拟支路,然后将该虚拟支路与第3条开断支路组成新的双支路开断模型。结合经典的潮流折返过程导出了虚拟支路模型中支路开断分布因子的计算式,计算过程简单。引入了FTIL的概念,证明了由FTIL描述的广义潮流转移严重区包含所有潮流转移较严重的支路,并采用改进的广度优先搜索(BFS)算法对该区域进行界定,在BFS的终止条件中引入FTIL,使得搜索自动规避FTIL较小的区域,缩小了搜索范围。最后,由界定区域中受潮流转移影响较严重的支路构成输电断面。在新英格兰39节点系统中验证了所提方法的有效性。
[Abstract]:In order to solve the problem of active power flow transfer after multi-branch break, a new search algorithm for multi-branch power flow transfer is proposed based on virtual branch model and power flow transfer intensity (FTIL). On the basis of double branch breaking, a virtual branch model of multi-branch power flow transfer is given. Firstly, two branches are equivalent to one virtual branch. Then the virtual branch and the third branch are combined to form a new double branch model. In this paper, the formula of branch breaking distribution factor in virtual branch model is derived based on the classical power flow reentry process, and the calculation process is simple. In this paper, the concept of FTIL is introduced, and it is proved that the generalized power flow transfer serious area described by FTIL contains all branches of power flow transfer, and the improved breadth-first search algorithm is used to define the region. FTIL is introduced into the termination condition of BFS, which makes the search automatically avoid the smaller area of FTIL and reduces the scope of search. Finally, the transmission section is made up of the branch roads which are seriously affected by the power flow transfer in the defined area. The effectiveness of the proposed method is verified in a 39-bus system in New England.
【作者单位】：新能源电力系统国家重点实验室(华北电力大学);
【分类号】：TM744

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