【作者】 梁利生；

【导师】 吕玉祥；

【作者基本信息】 太原理工大学 ， 集成电路工程， 2014， 硕士

【摘要】 近年来,伴随着智能电网的建设步伐加快,全国每年采购、运输和安装的电力大件设备价值约有500亿元。电力设备,特别是大型电力设备具有严格的运输质量要求。在运输过程中,行车速度,冲击振动,气体压力,倾斜程度等剧烈变化极易造成设备损坏或产生潜在安全隐患。因此,必须对这些参数进行严格的监控。在设备的运输环节,从设备起运到到达施工现场的时间往往需要数天甚至1-2个月。目前在设备运输的实际操作中,由于运输过程漫长,检测仪器安装使用没有统一规范,检测数据只能事后查看等因素,往往会出现检测数据与实际情况不符的情况,导致运输过程及检测数据无法真正保证设备运输的质量。因此,急需对相关技术进行研究开发,建立一套电力设备运输质量在线管控系统,对大型电力设备的运输进度、设备状态和环境信息等进行实时监控,为设备运输质量提供有力保障。本课题来源于国家电网公司的科研项目《电力设备运输质量在线管控技术的研究应用》,与北京天成电科技有限公司合作,从电力设备运输质量监测的实际问题入手,提出了一种基于预警优先级的ZigBee传感网络MAC层阶梯退避算法,综合应用现代传感技术、ZigBee+GPRS无线通信技术和卫星定位技术,设计实现了大型电力设备在途监测系统。该项目已于2014年3月由山西省科技厅验收,科技成果鉴定为国际先进水平。本课题的具体工作内容如下：(1)分析了运输途中造成大型电力设备安全隐患的因素,并掌握了国内外目前对大型电力设备运输监测方法的优缺点。(2)提出了一种基于预警优先级的IEEE802.15.4非时隙CSMA/CA自适应调整阶梯退避算法,将该算法和ZigBee网络结合,设计了大型电力设备在途监测系统。(3)设计并完成了系统的硬件电路,主要包括处理器外围电路、稳压电路、ZigBee无线通信电路、传感器数据采集电路等,并对电路中器件的参数和设计进行了详细的说明。(4)设计了整个系统的软件流程,完成了各个模块之间的通信协议。(5)介绍了监测系统中监控中心的功能界面,并对监测结果进行了分析和讨论。更多还原

【Abstract】 In recent years, with the quick pace of the smart grid construction, the electrical major equipment of procurement, transportation and installation costs about500billion yuan every year in China. The electrical equipment, especially large-sized electrical equipment, has strict transportation quality requirements. In the course of transporting, driving speed, impact vibration, gas pressure and title level will damage the equipment easily or have potential safety hazard. Therefore, we must strictly monitor these parameters.In the transportation of the equipment, it always takes a few days even one or two months from starting to transport the equipment to getting to the construction site. At present, in the actual operation of equipment transportation, the test data isn’t agree with practice situation because of the long transportation and checking the test data later, without installing unified standard testing instrumentation and so on. Under this situation, the process of the transportation and the test data can’t guarantee the quality of transportation equipment. Therefore, we should research and develop the related technology. At the same time, we should establish a set of power equipment transportation quality control system. Using this system, we can monitor the transporting movements, state and environmental message of the equipment. If we do this, we’ll provide powerful guarantee to ensure the quality of transportation equipment.This topic is derived from the scientific research projects of the state grid corporation of China, Research and application of electric power equipment transportation quality online control technology. It cooperates with Beijing tiancheng electrical technology Co. They start with the practical problems of power quality monitoring equipment transportation. After that, they come up with a ZigBee sensor network MAC layer backoff algorithm for early warning based on priority. By using modern sensor technology、 ZigBee+GPRS wireless communication technology and satellite positioning technology, this design realizes the road monitoring system of large-sized electric power equipment. The project has been acceptance by state grid company in March2014. Scientific and technological achievements are determined to be international advanced level.The following is the specific content of this topic:(1)Introduce the factors that cause potential safety hazard during the transportation, analyze the advantages and disadvantages of monitoring methods for large-sized electric power equipment.(2)Introduce the design scheme of road monitoring system of large-scale electric power equipment in detail. Come up with Warning priority IEEE 802.15.4unslotted CSMA/CA backoff algorithm based on adaptive adjustment of step. Illustrate the process of backoff algorithm in the ZigBee wireless communication.(3)Design and complete the system hardware circuit, including processor peripheral circuit, voltage regulator circuit, ZigBee wireless communication circuit, sensor data acquisition circuit, etc. Illustrate the circuit parameters and the design in detail.(4)Design the software flow of the whole system, complete the communication protocol between various modules.(5)Introduce the function of the monitoring center interface in the monitoring, analyze and discuss the monitoring results.更多还原