某金矿井下中央变电所供配电系统优化研究

发布时间：2019-01-09 07:58

【摘要】：井下中央变电所是矿山供配电系统的重要组成部分。主要保证井下掘进、排水、通风、监测、照明等设备的正常用电,确保矿山主要设备的正常运行。由于矿山用电属于一级负荷,停电将造成很重大的经济损失。因此,中央电变电所必须满足各项基本参数要求,首先满足供电系统的可靠性,其次是设计的合理性与经济性。因此要高标准、高质量地建设好井下中央变电所,设计显得尤其重要。井下中央变电系整个井下的供电中心,承担着井下各个掘进面的配电、受电、变电任务。中央变电所由高低压配电柜、移动变电站或防暴型干式变压器、无功补偿设备、漏电检测等主要部分组成。变电所供电设计首先要了解矿区的生产系统、通风排水系统、采矿方法及使用的生产机械设备情况,根据用电负荷、用电设备的布置,确定变电所的整体主接线系统。在此基础上,通过公式计算确定各项额定值,再由此选择变压器、电缆、电器等主要设备,并详细计算出短路电流及各种保护整定值。文章通过合理的电气主接线方式设计、合理的选择电气装置、精确计算各项保护值、合理布局混凝土地面以达到变电所供电系统运行可靠性和经济合理性,同时具备可操作性、具有扩建的可能性和改变运行方式时的灵活性,使其更加符合实际需求。文章在深入了解储备10kV中央变电所电气设计的相关理论知识及设计经验基础上,深入研究中央变电所供配电系统的日常维护与管理,独立分析和解决了供配电系统问题以及对所研究的问题进行了优化研究。
[Abstract]:Underground central substation is an important part of mine power supply and distribution system. To ensure the normal use of underground tunneling, drainage, ventilation, monitoring, lighting and other equipment, to ensure the normal operation of the main equipment in the mine. Because the mine electric power belongs to the first class load, the blackout will cause the very big economic loss. Therefore, the central electric substation must meet the requirements of basic parameters, first of all, meet the reliability of the power supply system, secondly, the rationality and economy of the design. Therefore, the design of underground central substation is especially important to high standard and high quality. The power supply center of the whole downhole central substation system undertakes the task of distribution, receiving electricity and transforming electricity. The central substation consists of high and low voltage distribution cabinets, mobile substations or riot-proof dry transformers, reactive power compensation equipment, leakage detection and so on. In the design of substation power supply, first of all, the production system, ventilation and drainage system, mining method and production machinery and equipment used in mining area should be understood. According to the electric load and the arrangement of electric equipment, the overall main wiring system of substation should be determined. On this basis, the rated values are determined by formula calculation, and then the main equipments such as transformers, cables and electrical appliances are selected, and the short-circuit current and various protection setting values are calculated in detail. Through the rational design of the main electrical wiring mode, the reasonable selection of the electrical devices, the accurate calculation of the protection values, the reasonable distribution of concrete floor to achieve the reliability and economic rationality of the power supply system of the substation, and the maneuverability of the system. It has the possibility of expansion and the flexibility of changing the operation mode to make it more in line with the actual needs. On the basis of deep understanding of the relevant theoretical knowledge and design experience of electrical design of reserve 10kV central substation, this paper deeply studies the daily maintenance and management of power supply and distribution system of central substation. The problem of power supply and distribution system is analyzed and solved independently.
【学位授予单位】：青岛理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD611.2

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