桂阳县高压配电网发展规划研究

发布时间：2018-05-26 12:28

本文选题：电网规划 + 负荷预测　；参考：《湖南大学》2016年硕士论文

【摘要】：随着电力工业的发展,电能应用的范围越来越广泛和深入。电力为国民经济和社会发展提供了强大动力,促进了社会科学技术的进步和生产效率的提高;同时,电力技术的发展为人民生活水平的提高和国民经济现代化建设提供了重要的物质基础。工农业、交通运输、居民生活、市政商业等领域的电气化程度已成为衡量一个国家经济社会发展水平的重要标志。本文针对桂阳电网已不能满足桂阳国民经济社会进一步发展对电力需求的问题,立足桂阳实际,以当前电网现状为基础进行近期、中期、远期电网规划,主要工作包括以下几个方面:(1)统计了桂阳县境内水电、风电基本情况;汇总桂阳电网110k V及以上、35k V及10k V网络输变配电设施并进行统计分析,总结整个桂阳电网特点并指出当前电网存在的问题。(2)以桂阳县历年经济发展和负荷数据为基础,结合桂阳县其它发展规划,采用弹性系数法、线性回归法、综合用电水平法和重点用户法等四种方法进行负荷预测,比较分析预测数据后得到负荷预测值;根据用户负荷特性不同对整个桂阳地区进行区域划分,并依据相关规则进行分区负荷预测。(3)在电量预测的基础上,根据各分区负荷特点确定年最大负荷利用小时数,开展全县和各分区电力预测,并进行全县和各分区电力平衡计算和无功功率平衡计算。(4)给出两种变电容量平衡模式,讨论分析后得出推荐方案,以推荐方案为前提进行全县和各分区的各电压等级变电容量平衡计算,以此为基础得到各电压等级的变电站布点方案。(5)以负荷预测与布点方案为基础,进行了近期、中期、远景主电网规划,给出了详细的规划方案,潮流计算结果表明规划方案可行。
[Abstract]:With the development of electric power industry, the application of electric energy is more and more extensive. Electric power has provided a powerful power for the national economy and social development, promoted the progress of social science and technology and the improvement of production efficiency; at the same time, The development of electric power technology provides an important material basis for the improvement of people's living standard and the modernization of national economy. The degree of electrification in the fields of industry and agriculture, transportation, resident life, municipal commerce and so on has become an important symbol to measure the level of economic and social development of a country. In view of the problem that Guiyang power grid can no longer meet the further development of the national economy and society in Guiyang, this paper bases itself on the actual situation of Guiyang and carries out the short-term, medium-term and long-term power network planning based on the current situation of the grid. The main work includes the following aspects: (1) the basic situation of hydropower and wind power in Guiyang County is counted, and the distribution and transmission facilities of 110 kV and above 35 kV and 10 kV in Guiyang Power Grid are collected and analyzed statistically. This paper summarizes the characteristics of the whole Guiyang power network and points out the existing problems of the current power network. Based on the economic development and load data of Guiyang County over the years, combined with other development plans of Guiyang County, the elastic coefficient method and linear regression method are adopted. After comparing and analyzing the forecasting data, the load forecasting values are obtained, and the whole area of Guiyang is divided according to the different characteristics of the users' load, and the four methods, such as the power level method and the key user method, are synthetically used to forecast the load. On the basis of the electricity quantity forecast, the maximum number of hours of annual load utilization is determined according to the load characteristics of each district, and the electric power forecasting of the whole county and the districts is carried out. At the same time, the power balance calculation and reactive power balance calculation of the whole county and each district are carried out. Two variable capacity balance modes are given. After discussion and analysis, the recommended scheme is obtained. Based on the recommended scheme, the transformer capacity balance calculation of the whole county and each district is carried out, based on which the substation distribution scheme of each voltage level is obtained. Based on the load forecasting and distribution scheme, it is carried out in the near and medium term. The detailed planning scheme is given and the result of power flow calculation shows that the plan is feasible.
【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM715

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