配电网变压器负载率智能化分析

发布时间：2018-03-29 23:24

本文选题：重过载　切入点：负载率看板　出处：《吉林大学》2017年硕士论文

【摘要】：当前广大居民在用电高峰期时会遇到停电,停电的原因主要为变压器、低压开关、低压导线故障,每年的夏季、冬季用电高峰来临时,此类现象更加突出。此类低压设备的故障不仅耗费了抢修的成本,影响了供电企业的经营效益,而且影响了广大居民的用电满意度。造成低压设备故障的原因除了设备老化之外,主要为设备出现重过载,设备长期超负荷运行,发生烧损。因此对配电网变压器负载率进行高效、有质量的分析探讨,做好预防措施,显得尤为重要。当前负载率分析面临的问题主要为对变压器运行数据某一方面的分析比较深入,但未能从整体上把握变压器的情况。本文提出了变压器负载率看板的构想,通过该看板,可以从整体上对变压器的负载率情况进行把握。为实现该构想,本文构建了配电网变压器负载率指标分析体系,从五个负载率区间“整体过载、整体重载单相过载、整体重载、单相过载、单相重载”对负载率进行分析,并能够按照不同供电片区进行区分,将重过载变压器“是否属于供电部门维护(产权属性)、是否有项目改造”纳入统计,使得分析体系更加符合实际的需求。同时为提升负载率分析的效率,本文还通过VBA编程的方式设计了一个负载率分析程序,以计量自动化系统导出的数据为基础,运行VBA程序即可快速生成变压器负载率看板。编制一个VBA程序来实现相应的变压器负载率的分析功能,对比计量自动化系统当前的基本功能、新开发的分析软件、人工分析三个方面,VBA编程其功能实现、开发成本、分析时间方面是最优的。本文还建立了变压器负载率VBA程序测试及结果分析模型,并最终实现了快速生成变压器负载率看板。在实现过程,达到了成本低、效率高、程序可扩展、符合实际工作需要的效果,为制定变压器科学有效的运行维护策略提供了数据支撑,科学有效的运行维护策略可以将故障隐患消灭在萌芽状态,降低设备的故障次数,从而提升广大居民客户的用电满意度和供电企业的效益。
[Abstract]:At present, the majority of residents will encounter power outages during the peak period of power consumption. The main causes of the power outages are transformer, low-voltage switches, low-voltage wire faults, and the summer and winter peak of power consumption each year. The failure of this type of low-voltage equipment not only consumes the cost of rush repair, but also affects the operating efficiency of power supply enterprises. In addition to the aging of the equipment, it is mainly caused by the heavy overload of the equipment and the long-term overload of the equipment. Therefore, the load rate of transformer in distribution network is analyzed and discussed efficiently and qualitatively, and the preventive measures are done well. The main problem in the analysis of load rate is that the analysis of some aspect of transformer operation data is more thorough, but the situation of transformer can not be grasped as a whole. In this paper, the conception of transformer load rate Kanban is put forward. Through the Kanban, the load rate of transformer can be grasped as a whole. In order to realize the conception, the paper constructs the index analysis system of transformer load rate in distribution network. Single phase overload, monolithic overload, single phase overload, single phase overload "the load rate is analyzed, and can be distinguished according to different power supply areas," In order to improve the efficiency of load rate analysis, the overloaded transformer is included in the statistics of whether or not it belongs to the maintenance of power supply department (property right attribute, whether there is project transformation or not), so as to make the analysis system more in line with the actual demand. This paper also designs a load rate analysis program by means of VBA programming, which is based on the data derived from the metrological automation system. The transformer load rate Kanban can be generated quickly by running VBA program. A VBA program is developed to realize the analysis function of transformer load rate. The current basic functions of the metrological automation system and the newly developed analysis software are compared. The function realization, development cost and analysis time are optimal in three aspects of manual analysis. The VBA program test and result analysis model of transformer load rate are also established in this paper. And finally realized the fast generation transformer load rate Kanban. In the realization process, achieved the low cost, high efficiency, the program can be expanded, in line with the actual work needs, It provides data support for making scientific and effective operation and maintenance strategy for transformer. Scientific and effective operation and maintenance strategy can eliminate hidden trouble in the bud and reduce the frequency of equipment failure. In order to enhance the majority of residents of customer satisfaction and power supply enterprises benefit.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM41

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