大型油浸式变压器智能呼吸器的研制

发布时间：2018-01-08 01:27

本文关键词：大型油浸式变压器智能呼吸器的研制　出处：《西南交通大学》2017年硕士论文　论文类型：学位论文

【摘要】：呼吸器作为变压器的安全附属配件,安装于油枕连接管末端,内部装有变色硅胶用于干燥进入油枕的空气,避免水分的进入。在应用过程中,一旦呼吸器出现故障将给变压器造成严重的影响,甚至波及整个电力系统。此外,呼吸器需要定期维护,变色硅胶失效后还需要更换处理。整个过程不但要耗费大量的人力物力,而且维护人员还存在较大的安全作业风险。因此亟需提出一种可以实时监测呼吸器的运行状态,并对变色硅胶自动再生处理,实现在变色硅胶寿命周期内免维护的数字化、智能化变压器呼吸器。本文详细介绍了变压器智能呼吸器的研制过程,研制该智能呼吸器的出发点是基于变色硅胶吸湿失效后可以通过热脱附的方式对其进行再生处理的特性,实现对变色硅胶的重复利用。在此基础上,从呼吸器的主要功能和性能要求方面出发,并通过深入的对比分析,最终选择通过检测空气湿度来判断变色硅胶吸湿状态并设置两个硅胶罐的方案来完成对智能呼吸器的研制。根据以上所确定的设计方案,文中对智能呼吸器的硬件电路和软件程序的设计与实现展开了详细的叙述。在硬件电路设计中,单片机利用DHT11湿度传感器来完成对空气湿度的采集,同时结合Pt100测温电路和时钟电路来实现对变色硅胶的再生处理。此外,还对显示屏模块、串口通信和电源模块的设计进行了详细的介绍。系统的软件设计分为下位机软件和上位机软件两部分:下位机软件设计是利用C程序语言来实现智能呼吸器的各项功能;上位机软件设计则是利用LabVIEW开发了上位机软件界面,实现了上位机与下位机之间的通信。在完成智能呼吸器基本功能测试后,在第三方检测认证机构—摩尔实验室对其进行了电气性能测试,测试结果表明本文所研制的智能呼吸器能够有效的干燥外部空气并对失效的变色硅胶进行再生处理,实现了呼吸器在变色硅胶寿命周期内的免维护,满足设计要求。
[Abstract]:As the safety accessories of transformer respirator, installed in the oil pillow is at the end of the tube, filled with silica gel for drying air into the oil pillow, avoid moisture entering. In the application process, once the respiratory failure will cause serious influence to the transformer, and even spread to the entire power system. In addition, respirators need regular maintenance, silica gel after failure also need to replace the processing. The whole process will not only consume a lot of manpower and material, and maintenance personnel still exist safe operation with high risk. So it is necessary to propose a real-time monitoring apparatus running condition, and the automatic regeneration of silica gel, silica gel in the realization of digital maintenance free life cycle and the intelligent transformer apparatus. This paper introduces in detail the development process of intelligent transformer respirator, the starting point is based on the development of intelligent apparatus After the failure of the silica gel absorption thermal desorption method on the characteristics of recycling, reuse of silica gel. On this basis, starting from the main functions and performance requirements of the respirator and through in-depth comparative analysis, the final selection, to determine the silica gel hygroscopic state and two silica gel tank the plan to complete the development of intelligent apparatus through the detection of air humidity. According to the above design as determined by the design of the intelligent apparatus of the hardware circuit and software program in this paper and the structure described in detail. In the design of hardware circuit, microcontroller DHT11 humidity sensor using air humidity to the completion of the acquisition, at the same time with Pt100 temperature measurement circuit and clock circuit to realize the regeneration of silica gel. In addition, the display module, serial communication module and power supply design. The line is introduced in detail. The software design of the system is divided into two parts: PC software and PC software, PC software design is to realize the function of intelligent apparatus using C programming language; PC software design is developed using LabVIEW PC software interface, realize the communication between host and slave the completion of the basic functions of intelligent apparatus. In the test, the third party inspection certification bodies - Moore laboratory to test the electrical performance of the test results show that the intelligent apparatus developed in this paper can effectively dry outside air and the failure of silica gel regeneration treatment, the respirator maintenance free silica gel in life cycle and meet the design requirements.

【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM411

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