中山市东区10kV配电网的可靠性评估与优化

发布时间：2018-11-16 13:10

【摘要】：随着我国城市化进程的加快,人们对于供电可靠性的要求也越来越高。停电时间也从原来的几个小时缩短到现在的几分钟甚至是不间断供电。配电网作为发电、输电、变电、配电这一条供电系统的末端,发挥着和用户对接、最后一公里的作用。配电网的可靠性直接影响着用户用电的感受,也影响着用户对于电网的评价,所以,如何提高配电网的可靠性成了我们必须面对的问题。中山市作为珠三角的中心地带,是广东电网的排头兵,对于供电可靠性有着更高的需求。东区作为中山市的市中心,如何在配网可靠性已有较高水平的情况下继续提高,是本文研究的背景。本文首先通过对中山市东区范围内变电站、10k V配电网网架结构和10k V配网设备的分析,较为完善的评估了东区配电网现状的基本情况及现状,为研究问题提供了基本数据基础,达到研究的初步目的。其次通过分析东区2015年及2016年的可靠性数据,找到了影响东区配电网可靠性的关键因素--故障停电,并根据对故障停电的分析,结合东区近几年的可靠性数据,对东区配电网可靠性做出了评估,得出东区配电网故障停电的主要原因有变压器故障,电缆故障,设备老化故障等,对东区配电网的可靠性进行了全面的评估。最后,用贝叶斯方法开展针对东区配电网可靠性分析和优化及其改良措施。并根据相应故障点制定了解决措施,例如低压环网、电压监测、新建台区、加强配网自动化建设等,以供今后的配电网建设和网架结构改造借鉴,使东区配电网可靠性能够进一步提高。再利用灰色预测法对2017年可靠性做出了预测,与2012-2016年指标做了对比。相信通过这些措施的实施,东区配网可靠性一定会有一个大的飞跃。
[Abstract]:With the acceleration of urbanization in China, the demand for reliability of power supply is becoming higher and higher. Power outages have also been shortened from hours to minutes or even uninterrupted power. As the end of the power supply system, the distribution network plays the role of docking with the user and the last kilometer. The reliability of distribution network directly affects the feeling of power consumption and the evaluation of power grid. Therefore, how to improve the reliability of distribution network has become a problem we must face. As the center of Pearl River Delta, Zhongshan City is the vanguard of Guangdong Power Grid, which has higher demand for power supply reliability. As the city center of Zhongshan City, East District is the background of this paper, how to improve the reliability of distribution network at a high level. First of all, through the analysis of the substation, 10kV distribution network structure and 10kV distribution equipment in the eastern district of Zhongshan City, the basic situation and present situation of the distribution network in the eastern district are evaluated. It provides the basic data basis for the research and achieves the preliminary purpose of the research. Secondly, by analyzing the reliability data of the eastern region in 2015 and 2016, the paper finds out the key factor that affects the reliability of the eastern power distribution network, that is, the fault blackout. According to the analysis of the failure power failure, combined with the reliability data of the eastern region in recent years, The reliability of eastern distribution network is evaluated, and the main reasons of power outage are transformer fault, cable fault, equipment aging fault and so on. The reliability of eastern distribution network is comprehensively evaluated. Finally, the Bayesian method is used to analyze and optimize the reliability of the eastern distribution network and its improvement measures. According to the corresponding fault points, the solutions are made, such as low voltage loop network, voltage monitoring, building new station area, strengthening the automation construction of distribution network and so on, so as to provide reference for the future distribution network construction and network structure reconstruction. The reliability of the eastern distribution network can be further improved. The reliability of 2017 is forecasted by grey forecast method, and compared with the target of 2012-2016. I believe that through the implementation of these measures, Eastern distribution network reliability will be a big leap forward.
【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】：TM732

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