变电站设备状态检修技术的研究

发布时间：2018-05-30 12:32

本文选题：变电站 + 状态检修　；参考：《华北电力大学》2014年硕士论文

【摘要】：变电站是输配电系统中十分重要的环节,它是信息的发送者,也是控制指令的接收终端。变电站设备的运行状态直接影响到整个电网的安全与稳定。一旦变电站设备出现较大故障,将会对区域电网造成严重影响。因此,必须保障变电站设备的安全运行,确保电网的安全与稳定针对于上述问题,对变电站设备的检修就变得尤为重要。目前国内采取的都是计划检修的方式。但是计划检修存在一定的问题,浪费财力物力的同时不能达到最佳的检修效果。状态检修是近年来发展起来的新的检修技术,它能够一定程度的克服计划检修的弊端,为电力系统带来更大的效益,也是未来智能电网发展对变电站提出的基本要求本文介绍了智能变电站的概念及其体系结构,阐述了智能变电站进行状态检修方式的必然性,通过数据比较分析了状态检修的优越性；研究了智能变电站状态检修的现状,给出了状态检修的主要技术路线和关键技术；对状态检修最关键的在线监测技术进行了详细探讨。分析了变压器绝缘劣化的主要因素,研究了变压器油中各种气体的产生机理,设计了一种基于光声光谱法的在线监测系统,实现了变压器的状态检修；分析了电力电缆绝缘劣化的主要因素,研究了光纤温度传感器的工作原理,设计了分布式光纤温度传感器在线监测系统,实现了电力线缆的状态检修。构建了变电站的光纤通信系统,实现了变电站在线监测信息的光纤通信,提高了变电站监测信息的传输速度。
[Abstract]:Substation is a very important link in transmission and distribution system. It is the sender of information and the receiving terminal of control instruction. The operation state of substation directly affects the security and stability of the whole power grid. Once the substation equipment has a large failure, it will have a serious impact on the regional power grid. Therefore, it is necessary to ensure the safe operation of substation equipment and ensure the safety and stability of power grid. In view of the above problems, the maintenance of substation equipment becomes particularly important. At present, all the methods adopted in China are planned maintenance. However, there are some problems in planned maintenance, which waste financial and material resources and can not achieve the best repair effect at the same time. Condition-based maintenance (CBM) is a new maintenance technology developed in recent years. It can overcome the disadvantages of planned maintenance to a certain extent and bring greater benefits to the power system. It is also the basic requirement of the development of smart grid for substation in the future. This paper introduces the concept and architecture of intelligent substation, expounds the inevitability of condition based maintenance in intelligent substation, analyzes the superiority of condition based maintenance through data comparison, studies the present situation of condition based maintenance in intelligent substation. The main technical route and key technology of condition-based maintenance are given, and the most critical on-line monitoring technology of condition-based maintenance is discussed in detail. This paper analyzes the main factors of transformer insulation deterioration, studies the generation mechanism of various gases in transformer oil, designs an on-line monitoring system based on photoacoustic spectroscopy, and realizes the condition maintenance of transformer. This paper analyzes the main factors of insulation deterioration of power cable, studies the working principle of optical fiber temperature sensor, designs a distributed optical fiber temperature sensor on-line monitoring system, and realizes the condition maintenance of power cable. The optical fiber communication system of substation is constructed, and the optical fiber communication of substation on-line monitoring information is realized, and the transmission speed of substation monitoring information is improved.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM63;TM73

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