基于可靠率指标的中压架空馈线分段优化

发布时间：2018-11-25 19:54

【摘要】：提出一种基于可靠率指标的单馈线和多馈线系统架空线最小分段数模型和算法;提出一种有效改善架空线可靠率指标的最大有效分段数的概念和计算方法。得到单馈线和多馈线系统可靠率估算简化模型,经计算分析得到对于不同线路长度的单馈线最大有效分段数和最小分段数。研究表明,对于长度在1~15 km的线路,辐射形线路最大有效分段数为3~5,明显低于有联络线路5~15的最大有效分段数;对于多馈线系统,各线路最小分段不仅与自身长度有关,还与本线路用户数以及其他线路长度和用户数密切相关;现有相关技术导则中推荐的3分段或不大于5分段的技术原则在一定程度上限制了配电网可靠率水平的进一步提高。
[Abstract]:This paper presents a model and algorithm of minimum segment number of overhead lines based on reliability index, and a concept and calculation method for improving the maximum effective segment number of reliability index of overhead line effectively. A simplified model for estimating the reliability of single-fed and multi-fed systems is obtained. The maximum effective number of segments and the minimum number of segments for different line lengths are obtained by calculation and analysis. The results show that the maximum effective segmenting number of radiation line is 3 / 5, which is obviously lower than the maximum effective segment number of 5 / 15 with connection line for the line with length of 1 ~ 15 km. For multi-feeder system, the minimum segment of each line is not only related to its length, but also closely related to the number of line users and other lines and the number of users. The technical principle of 3 sections or no more than 5 sections recommended in the existing technical guidelines limits the further improvement of the reliability level of distribution network to a certain extent.
【作者单位】：国网重庆市电力公司;重庆大学输配电装备及系统安全与新技术国家重点实验室;国网陕西省电力公司经济技术研究院;国核电力规划设计研究院重庆有限公司;
【分类号】：TM75

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