蒙东电网某500kV交流输电线路导线选型

发布时间：2018-05-25 13:30

本文选题：蒙东电网某500kV线路 + 导线选型　；参考：《华北电力大学》2017年硕士论文

【摘要】：导线是输电线路最主要的组成部分,担负着传输电能的作用。导线的选型不仅要考虑安全可靠的输送电能,同时还要满足环境保护的要求,最终从技术经济方面还需要是合理方案。导线的选型不仅影响线路工程的初期建设费用,而且对后期线路的运行维护成本也有较大影响。因此,对导线类型、截面和分裂型式等进行综合技术经济比较,以得出最佳导线选型方案至关重要。国内外对导线的选型研究根据本国电力工程特点及实际需要,制定有不同的导线标准,电流密度,导体允许温度、电磁环境影响等均有各自的规定;结合不同工程实际需要,除了广泛使用的钢芯铝绞线外,全铝合金导线、钢芯高导铝绞线、低风压导线等新型导线逐步被研发并应用于具体工程中。结合蒙东电网某500kV交流输电线路工程案例,根据该工程实际需求及技术条件,综合考虑各种导线的电气性能、机械性能、线路全寿命周期费用等因素,对导线型式、分裂根数、总截面选择、经济电流密度进行全面论证,优化选择合适的导线,最终得出适合工程特点的较合理的导线方案。本文通过对蒙东电网某500kV交流输电线路导线选型分析,不同类型的导线具有不同的优良性能,在使用时应根据工程的具体特点,选用相应的导线方案,才能充分发挥导线优势,达到保证工程安全,实现节能减排的目标。未来如何降低损耗,节约能源是导线的发展方向和趋势。
[Abstract]:Conductor is the most important part of transmission line, which is responsible for the transmission of electric energy. The selection of conductors should not only consider the safe and reliable transmission of electric energy, but also meet the requirements of environmental protection. Finally, it is necessary to be reasonable in terms of technology and economy. The selection of conductors not only affects the initial construction cost of the line project, but also has a great influence on the operation and maintenance cost of the line in the later stage. Therefore, it is very important to compare the traverse type, cross section and split type in order to get the best traverse selection scheme. Research on conductor selection at Home and abroad according to the characteristics and actual needs of domestic electric power engineering, different traverse standards, current density, conductor allowable temperature, electromagnetic environment influence and so on have their own regulations, combined with the actual needs of different projects, In addition to the widely used steel core aluminum strands, all aluminum alloy conductors, steel core high conductance aluminum strands, low wind pressure conductors and other new types of conductors have been gradually developed and applied in concrete projects. Combined with the case of a 500kV AC transmission line project in Mendong Power Grid, according to the actual requirements and technical conditions of the project, the electrical properties, mechanical properties, line life cycle cost and other factors of various conductors are considered synthetically, and the type of conductors and the number of splitting roots are considered. The selection of total section, economic current density and optimum selection of suitable conductors are carried out. Finally, a more reasonable traverse scheme suitable for engineering characteristics is obtained. Based on the analysis of conductor selection for a certain 500kV AC transmission line in Mendong Power Grid, it is found that different types of conductors have different excellent performances. In order to give full play to the advantages of conductors, the corresponding traverse schemes should be selected according to the specific characteristics of the project. To ensure the safety of the project and achieve the goal of energy saving and emission reduction. How to reduce loss and save energy in the future is the development direction and trend of conductors.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM75

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