架空输电线路交叉跨越的监测与分析研究

发布时间：2018-04-08 11:54

本文选题：输电导线　切入点：交叉跨越　出处：《太原理工大学》2016年硕士论文

【摘要】：架空输电线路是电能的传输通道,是电力系统的重要组成部分,它的可靠性直接关系到国民经济的平稳发展。然而,输电线路的安全运行却长期受到交叉跨越问题的影响,在受到强风、地陷、树木生长、温度变化、电线老化等因素影响时,高压或超高压线路与交叉或跨越物的间距会发生变化,若间距过小,导线与交叉跨越物之间会因放电而导致电力事故的发生。架空输电线路通常架设在野外,运行环境复杂,人工巡检的方式只能定期排查交叉跨越隐患,难以完全保证线路运行的安全性和可靠性。据调查,交叉跨越参数的测量、记录以及分析也均由人工完成,精度小,效率低。本文依托于国网山西省电力公司的科技项目“架空输电线路交叉跨越的校验与分析研究”,利用先进的传感器测量技术、无线网络通信技术和计算机技术,实现了架空输电线路交叉跨越监测与分析系统。围绕交叉跨越问题的实际需求,本文主要研究了以下内容:(1)以悬链线方程为基础,分别建立了输电线路在无风和风偏时的悬链线模型,给出了交叉跨越距离和弧垂的计算公式。(2)输电线路的数学表达式与倾斜角有很大的关联性,考虑到传统的单倾角法测量误差很大,提出了多倾角测量的交叉跨越监测方法。(3)结合无线射频技术和GPRS通信技术,建立了“星形+远程”的无线通信网络。(4)完成了中继器和传感器节点的硬件设计。设计了倾角采集电路,分析了倾角传感器的误差来源和修正方法。根据数据手册,对各个电路做了详细的功耗分析。(5)采用任务轮询的程序架构,详细阐述了中继器和传感器节点的程序设计。(6)通过程序设计的理论,实现了服务器在线监测软件的设计和交叉跨越测量软件的设计。(7)通过模拟实验,验证了整个系统的可行性和可靠性。
[Abstract]:Overhead transmission line is the power transmission channel, is an important part of power system, its reliability is directly related to the stable development of the national economy. However, the safe operation of the transmission line is influenced by long-term crossing problems, subsidence under strong winds, trees, growth, temperature, electrical aging and other factors when the pressure or spacing of EHV transmission lines and cross or cross will change, if the space is too small, and the cross wire cross between the power accidents caused by the discharge. The overhead transmission line is usually built in the wild, complex environment, manual inspection methods can regularly check crossing problems, difficult to completely to ensure the safety and reliability of line operation. According to the survey, measurement of crossing parameters, recording and analyzing were done by hand, the precision of small, low efficiency. Based on the national network of mountain Science and technology project "West Power Company of overhead transmission lines crossing the verification and analysis of research, using sensor measurement technology, wireless network communication technology and computer technology, the overhead transmission lines crossing monitoring and analysis system. The actual demand around the crossing problem, this paper mainly studies the following contents: (1) with catenary equations based on the catenary model in wind and the wind when the transmission lines are established respectively, gives the calculation formula of crossing distance and sag. (2) the mathematical expression of the transmission line and the tilt angle have great relevance, considering that the traditional method of single angle measurement error is large, the crossing method of multi angle measurement monitoring. (3) combined with radio frequency technology and GPRS communication technology, the establishment of the" star + remote wireless communication network ". (4) completed and repeater The hardware design of sensor nodes. The angle acquisition circuit design, analyzes the error sources of angle sensor and correction method. According to the data sheet for each circuit to do a detailed analysis of the power consumption. (5) the task polling program structure, describes the repeater and the sensor nodes (6) through the program design. The program design theory, design and implementation of the design and cross server monitoring software across the measuring software. (7) through the simulation experiments verify the feasibility and reliability of the whole system.

【学位授予单位】：太原理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM755

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