【作者】 李红；

【导师】 陈劲操； 衡思坤；

【作者基本信息】 南京理工大学 ， 电气工程， 2014， 硕士

【摘要】 变压器经济运行作为一种节电技术,把变压器经济运行的优化理论及定量化计算方法与变压器各种实际运行工况密切相结合。降低电网运行过程中的有功损耗作为提高电网运行经济性的重要手段之一,显著提高了电网运行效率。综合分析国内外研究现状基础,针对变压器经济运行分析问题,分析目前常用的变压器经济运行分析判断方法在实际应用中的特点和不足。结合电网运行实际,提出一种基于日时段损耗考核的变压器经济运行分析方法。推导各种运行方式下变压器损耗计算方法,并通过实际算例对其正确性和可行性进行验证。结合SCADA系统数据特点,建立断路器、母线及变压器数据结构,建立断路器量测功率值、母线负荷统计及变压器各侧负荷关联关系,合理简化系统数据结构。采用日时段损耗考核的变压器经济运行分析方法,结合地区电网实际运行特点,研发了地区电网变压器经济运行决策系统。维护界面简洁、维护量小,在连云港地区电网的实际调度运行中得到成功应用,节电效果显著。连云港5个变电站一个月内变压器节能71663kWh,节能率30%,减少了二氧化碳的排放,产生直接经济效益4万余元,产生了较好的经济效益和社会效益。更多还原

【Abstract】 As a kind of power saving technology, economic operation of transformer closely associated optimization theory and the quantitative calculation method with all kinds of actual operation conditions of transformer. Reducing the energy loss in the process of power grid operation is one of the most important methods to improve the power grid operation efficiency.In this paper, Overseas and domestic research status have been comprehensively analysed. For the transformer economic operation analysis problems, the advantages and disadvantages of resent transformer economical operation analysis methods used in the actual application was discussed. Combining the reality of power grid operation, a transformer economic operation analysis method based on the day time loss assessment was presented. Transformer loss calculation methods in various operation conditions were derived. The validity and feasibility of the methods were verified by the actual example.Combining with the characteristics of SCADA system data,data structures of curcuit breaker、bus and transformer as well as relationships between circuit breaker measurement power value、bus load statistical and the lateral load of transformer were established, which reasonably simplify the structure of system data.Regional power transformer economic operation decision system using day time loss assessment of transformer economic operation analysis method and combining with the characteristics of regional power grid operation was researched. The system had advantages of simple maintenance interface and small maintenance has successfully applied in the actual operation of regional power at Lianyungang.The results showed that the power saving effect was remarkable.5substation in Lianyungang had savd71663kWh in a month leading to30%of energy saving rate. Due to the emissions of carbon dioxide has been reduced; a direct economic benefits were more than40000yuan, which produced good economic benefit and social benefit.更多还原