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  本文選題：重過載　切入點：負載率看板　出處：《吉林大學(xué)》2017年碩士論文

【摘要】：當前廣大居民在用電高峰期時會遇到停電,停電的原因主要為變壓器、低壓開關(guān)、低壓導(dǎo)線故障,每年的夏季、冬季用電高峰來臨時,此類現(xiàn)象更加突出。此類低壓設(shè)備的故障不僅耗費了搶修的成本,影響了供電企業(yè)的經(jīng)營效益,而且影響了廣大居民的用電滿意度。造成低壓設(shè)備故障的原因除了設(shè)備老化之外,主要為設(shè)備出現(xiàn)重過載,設(shè)備長期超負荷運行,發(fā)生燒損。因此對配電網(wǎng)變壓器負載率進行高效、有質(zhì)量的分析探討,做好預(yù)防措施,顯得尤為重要。當前負載率分析面臨的問題主要為對變壓器運行數(shù)據(jù)某一方面的分析比較深入,但未能從整體上把握變壓器的情況。本文提出了變壓器負載率看板的構(gòu)想,通過該看板,可以從整體上對變壓器的負載率情況進行把握。為實現(xiàn)該構(gòu)想,本文構(gòu)建了配電網(wǎng)變壓器負載率指標分析體系,從五個負載率區(qū)間“整體過載、整體重載單相過載、整體重載、單相過載、單相重載”對負載率進行分析,并能夠按照不同供電片區(qū)進行區(qū)分,將重過載變壓器“是否屬于供電部門維護(產(chǎn)權(quán)屬性)、是否有項目改造”納入統(tǒng)計,使得分析體系更加符合實際的需求。同時為提升負載率分析的效率,本文還通過VBA編程的方式設(shè)計了一個負載率分析程序,以計量自動化系統(tǒng)導(dǎo)出的數(shù)據(jù)為基礎(chǔ),運行VBA程序即可快速生成變壓器負載率看板。編制一個VBA程序來實現(xiàn)相應(yīng)的變壓器負載率的分析功能,對比計量自動化系統(tǒng)當前的基本功能、新開發(fā)的分析軟件、人工分析三個方面,VBA編程其功能實現(xiàn)、開發(fā)成本、分析時間方面是最優(yōu)的。本文還建立了變壓器負載率VBA程序測試及結(jié)果分析模型,并最終實現(xiàn)了快速生成變壓器負載率看板。在實現(xiàn)過程,達到了成本低、效率高、程序可擴展、符合實際工作需要的效果,為制定變壓器科學(xué)有效的運行維護策略提供了數(shù)據(jù)支撐,科學(xué)有效的運行維護策略可以將故障隱患消滅在萌芽狀態(tài),降低設(shè)備的故障次數(shù),從而提升廣大居民客戶的用電滿意度和供電企業(yè)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.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM41

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