电力变压器运输状态监测及控制装置开发

发布时间：2018-04-16 07:26

本文选题：电力变压器 + 运输安全　；参考：《山东大学》2017年硕士论文

【摘要】：随着能源和电网事业的蓬勃发展,国内外投入电力变压器的数量、容量逐年增加,仅国内容量每年就高达上亿千伏安。作为输变电站的主设备,从生产至投运中间的运输、安装过程是否安全是变压器正常运行的前提条件。电力变压器,尤其是特高压、大容量的设备,在运输过程中的速度、加速度、倾斜度及内部气体压力等是影响其运输安全的关键参数。课题通过参与山东电力设备有限公司的科技项目,开发了一种传感器监测、数据通讯、网络发布、移动应用终端等技术相关的电力变压器运输状态监测控制系统,实现了运输状态监测及异常报警功能,结束了目前离线式巡检的现况。同时课题建立了电力变压器运输监测的运动模型,提出一种通过对历史加速度进行线性拟合来预测加速度的算法,并推导出了预测加速度的公式。本次课题的主要研究内容如下:(1)介绍了目前国内外电力变压器运输监测现状,分析了目前运输过程中可能会影响电力变压器运输安全的隐患,设计了电力变压器运输监测及控制系统;(2)进行了运输监测的需求分析,提出了系统的整体设计,并对系统组成部分的设计功能进行了详细描述;(3)开发完成了系统方案的硬件部分,主要有传感器型数字采集电路、电平转换稳压电源、中央处理器外围电路、近距离无线通讯电路,并对电路中元件选择与参数选取加以说明;(4)开发完成了系统方案的软件流程图,根据通讯协议完成了各模块间的通讯编程,并对程序的主要功能模块进行说明;(5)根据近距离无线组网的技术特点,结合变压器运输安全的参数要求,设计合适的网络结构,确定各模块间的通讯协议,并对功能的执行过程进行具体描述;(6)根据变压器运输监测的历史数据,以加速度为例,通过对过往数据的线性拟合,推测未来加速度的值,以此来预测加速度的趋势,为保证运输安全提供数据支撑。并对历史数据分析论证,验证系统有效性。整个监测控制系统从开始设计至开发完成,经过不断修改完善,已先后多次应用于公司电力变压器运输,现场收集的数据还用于对数学模型的验证。系统由变压器运输状态监测终端、冲撞记录仪、监控服务软件、具备外网地址的云端服务器等组成,终端样机通过了国家继电保护及自动化设备质量监测检验中心的检验。到目前,所有应用系统运行正常,已于2017年3月通过山东省科技厅验收,技术成果鉴定为国内先进水平。
[Abstract]:With the rapid development of energy and power grid industry, the number and capacity of power transformers are increasing year by year, and the domestic capacity is as high as 100 million KVA each year.As the main equipment of the transmission substation, whether the installation process is safe or not is the prerequisite for the normal operation of the transformer from production to operation.Power transformers, especially UHV and large capacity equipment, are the key parameters that affect the transportation safety of power transformers, such as speed, acceleration, inclination and internal gas pressure.By taking part in the scientific and technological project of Shandong Electric Power equipment Co., Ltd, a power transformer transportation condition monitoring and control system related to sensor monitoring, data communication, network publishing, mobile application terminal and so on has been developed.The monitoring of transportation condition and the abnormal alarm function are realized, and the present condition of off-line inspection is ended.At the same time, the motion model of power transformer transportation monitoring is established, and an algorithm of predicting acceleration by linear fitting of historical acceleration is proposed, and the formula of predicting acceleration is deduced.The main research contents of this subject are as follows: (1) the present situation of power transformer transport monitoring at home and abroad is introduced, and the hidden dangers that may affect the transportation safety of power transformer during the current transportation process are analyzed.This paper designs the power transformer transportation monitoring and control system, analyses the requirement of the transportation monitoring, and puts forward the whole design of the system.And the design function of the system component is described in detail. The hardware part of the system scheme is developed and completed, including the sensor digital acquisition circuit, the level conversion stabilized power supply, the peripheral circuit of the central processor.The software flow chart of the system is developed, and the communication program among the modules is completed according to the communication protocol.The main function modules of the program are explained. According to the technical characteristics of the close-range wireless network and the requirements of transformer transportation safety parameters, the appropriate network structure is designed, and the communication protocol between the modules is determined.According to the historical data of transformer transportation monitoring, the acceleration is taken as an example, and the future acceleration is predicted by linear fitting of the past data, so as to predict the trend of acceleration.Provide data support to ensure transportation safety.And the historical data analysis and demonstration, verify the effectiveness of the system.The whole monitoring and control system was designed from the beginning to the completion of development. After continuous modification and improvement, it has been applied to the power transformer transportation of the company for many times. The data collected in the field is also used to verify the mathematical model.The system consists of transformer transport status monitoring terminal, collision recorder, monitoring service software, cloud server with external network address, etc. The terminal prototype has passed the inspection of national relay protection and automation equipment quality monitoring and inspection center.Up to now, all the application systems are running normally and have passed the Shandong Science and Technology Department's acceptance in March 2017, and the technical achievements have been appraised to the advanced level in China.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM41

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