农村电网低电压优化研究

发布时间：2018-05-31 17:59

本文选题：农村配电网 + 低电压优化　；参考：《华北水利水电大学》2017年硕士论文

【摘要】：随着人民生活水平的提高,越来越多的用电设备进入农民家庭,农村用电负荷日益增加,导致了农村的用电压力倍增。近年来,我国相关电力部门对于农村低电压现象进行了深入剖析,并针对这一问题制定了相关政策。但是在季节和每日高峰用电期间还是有很多地区会出现低电压现象。这一问题主要是出现在线路老旧的农村。低电压现象极大的影响了农村用户的用电体验,影响了农村的正常生活,也阻碍了农村向城市化改进的步伐。因此,在我国农村电网中低电压治理显得尤为重要。本文首先对农村电网低电压的现状及成因进行了详细的分析,对低电压治理与优化技术研究进行了详细系统的论述。并鉴于变压器有载调压的不足,本文针对导线截面不足和供电半径过长的10kV配电线路进行了低电压治理研究。其次,考虑到农网实际运行中,由于无功控制分区不合理导致的电压越限、电压损耗等问题,本文从农网分区入手,对农网优化分区方法进行了研究,然后提出了电压薄弱节点的基本概念后,在农网电压无功控制分区的基础上,构建了考虑电压薄弱节点的广域无功控制的低电压治理模型,并采用Matlab软件,对10kV农村配电网进行了广域无功控制研究,通过算例分析,验证了方法的可行性。
[Abstract]:With the improvement of people's living standard, more and more electric equipments come into the farmers' families, and the rural electric load increases day by day, which results in the increase of the rural power pressure. In recent years, the low voltage phenomenon in rural areas has been deeply analyzed by the relevant power departments in China, and the relevant policies have been made in view of this problem. But there are still many areas where low-voltage occurs during seasonal and daily peak consumption. This problem mainly occurs in the old rural areas. The phenomenon of low voltage greatly affects the experience of rural users, affects the normal life in rural areas, and hinders the pace of urbanization in rural areas. Therefore, it is very important to control the low voltage in the rural power grid of our country. In this paper, the current situation and causes of low voltage in rural power network are analyzed in detail, and the research on low voltage governance and optimization technology is discussed in detail. In view of the lack of on-load voltage regulation of transformers, the low voltage treatment of 10kV distribution lines with insufficient conductor section and long power supply radius is studied in this paper. Secondly, considering the problems of voltage overrun and voltage loss caused by unreasonable reactive power control partition in the actual operation of rural power network, this paper starts with the partition of rural power network, and studies the method of optimizing the partition of rural power network. Then the basic concept of voltage weak node is put forward, and on the basis of voltage and reactive power control partition in rural network, the low voltage control model of wide area reactive power control considering voltage weak node is constructed, and the Matlab software is used. The wide area reactive power control of 10kV rural distribution network is studied, and the feasibility of the method is verified by an example.
【学位授予单位】：华北水利水电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM727.1

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