摘要
传统的中压配电系统主要采取"一刀切"的方式粗放地计算线路N-1校验结果,且在主变N-1校验过程中通常只能逐个校验,为此本文提出一种基于线路分段负荷转移的中压配电系统整体描述与N-1校验方法。首先,建立线路联络矩阵和网络转供能力矩阵来描述中压配电系统的联络关系和负荷转供能力,并通过分段负荷向量进一步细化上述描述;其次,研究基于线路分段负荷转移的中压线路N-1校验方法,在此基础上,结合变电站的网络转供能力分析,研究主变N-1校验方法;再次,当线路或主变N-1校验不通过时,依据贪心原则,提出基于分段负荷切除失负荷量计算方法;最后,通过算例分析,验证了本方法的实用性和准确性。
In the mid-voltage distribution system, the traditional N - 1 verification methods based on holistic line transfer could only get a rough result, and could only take one verification of the main transformer at one time. Based on subsection load transfer, this paper comes up with an integrated description and N - 1 verification method of distri- bution system to solve the problems above. Firstly, the tie-line matrix and the network transfer capability matrix are established to describe the contact structure and load transfer capability of the mid-voltage distribution system, and a more detailed account of the descriptions above is presented by establishing the subsection load vector. Secondly, a research on the N- 1 verification method on circuit based on subsection load transfer is made. Given on this basis and combined with the analysis of substation network transfer capability, this paper implements the N - 1 verification on main transformer. Thirdly, when the N - 1 verification on circuit or main transformer is not available, in accord- ance with greedy algorithm, the paper proposes a Finally, the effectiveness and the accuracy of the way to calculate the lost load based on subsection load shedding. method are verified by the analysis of calculation examples.
出处
《电工电能新技术》
CSCD
北大核心
2016年第8期66-72,共7页
Advanced Technology of Electrical Engineering and Energy
关键词
中压配电系统
N-1校验
分段负荷转移
分段负荷切除
mid-voltage distribution system
N - 1 verification
subsection load transfer
subsection load excision
