基于ZigBee的变电站一次设备状态监测系统

发布时间：2018-01-09 06:19

本文关键词：基于ZigBee的变电站一次设备状态监测系统　出处：《安徽理工大学》2014年硕士论文　论文类型：学位论文

【摘要】：变电站作为电网的重要组成部分,其安全稳定运行意义重大。长期以来,变电站内一次设备的检修方式以故障检修和计划检修为主,这些传统检修方式的弊端显而易见。随着现代科技水平的不断发展,对一次设备的运行状态进行在线监测,并结合在线监测的结果对一次设备开展检修,已成为变电站检修的主要手段。本文设计的状态监测系统就是对一次设备的运行状态进行在线监测,发现异常时及时报警,保障电网安全可靠地运行。目前已投入运行的设备在线监测装置,一般采用有线数据传输方式。然而,变电站一次设备数量很多,结构复杂,采用有线的数据传输方式,其布线繁琐、成本高昂、易遭雷击及老化,并且装置的位置不能随意移动,灵活性差。因此,本文设计的基于ZigBee的变电站一次设备状态监测系统有着实际意义,它为提高变电站运行自动化水平和电网的运行可靠性提供了一种解决方案。根据系统的设计要求及预实现的功能,将系统的整体结构分为数据采集部分、无线数据传输部分和上位机监测三个部分。在系统硬件设计方面,主要是针对数据采集部分和无线数据传输部分的设计。本文选用TI公司的CC2430芯片为主控芯片,根据ZigBee网络的特点,将硬件划分为协调器节点、路由器节点和终端节点三部分,设计了各节点的硬件结构框图。完成了射频及扩展电路、传感器电路、电源供电电路、JTAG接口电路、串口通信电路、报警及复位电路的设计。在系统的软件设计方面,本文采用TI公司Z-Stack协议栈,主要是针对协议栈应用层的开发。设计了协调器节点、路由器节点和终端节点的软件流程图,实现了终端节点按照指令采集数据并将数据进行无线传输的功能。通信协议包括无线通信协议和串口通信协议两部分,分别对协调器节点的命令帧格式、终端节点的数据帧格式、上位机的命令帧格式和协调器节点的数据帧格式进行了设计。在上位机软件设计方面,利用了NI公司的LabVIEW测控软件开发了系统的人机界面。该界面可以实时显示设备状态数据,并且在数据越界时进行声光报警,第一时间通知管理人员进行现场处理,实现了对变电设备运行状态的实时监测。设计了上位机软件开发流程,包括登陆界面、监测界面、设备配置、报警系统、历史系统和报表生成六部分。最后,利用LabVIEW软件完成了状态监测系统上位机监测界面的设计,实现了整个状态监测系统的组网运行。
[Abstract]:Substation as an important part of the power network, its safe and stable operation is of great significance. For a long time, the primary equipment maintenance mode in substation is mainly fault maintenance and planned maintenance. With the continuous development of modern science and technology, the operation status of primary equipment is monitored on line, and combined with the results of online monitoring, the maintenance of primary equipment is carried out. The condition monitoring system designed in this paper is to monitor the running state of the primary equipment online, and to alarm in time when the abnormal is found. In order to ensure the safe and reliable operation of the power grid, the on-line monitoring device that has been put into operation generally adopts the wired data transmission mode. However, there are a lot of primary equipments in the substation and the structure is complex. Using wired data transmission mode, its wiring is cumbersome, high cost, vulnerable to lightning strike and aging, and the location of the device can not be moved at will, the flexibility is poor. The design of substation primary equipment condition monitoring system based on ZigBee in this paper is of practical significance. It provides a solution for improving the level of substation operation automation and the reliability of power network operation. According to the system design requirements and pre-realized functions, the overall structure of the system is divided into three parts: data acquisition, wireless data transmission and PC monitoring. This paper selects TI CC2430 chip as the main control chip, according to the characteristics of ZigBee network. The hardware is divided into three parts: coordinator node, router node and terminal node. The hardware block diagram of each node is designed. The RF and expansion circuit, sensor circuit and power supply circuit are completed. JTAG interface circuit, serial communication circuit, alarm and reset circuit design. In the software design of the system, this paper adopts the Z-Stack protocol stack of TI company, mainly aiming at the development of the application layer of the protocol stack, designs the coordinator node. The software flow chart of router node and terminal node realizes the function of terminal node collecting data according to instruction and transmitting data wireless. The communication protocol includes wireless communication protocol and serial communication protocol. The command frame format of the coordinator node, the data frame format of the terminal node, the command frame format of the host computer and the data frame format of the coordinator node are designed respectively. In the software design of upper computer, the man-machine interface of the system is developed by using the LabVIEW software of NI company, which can display the state data of the equipment in real time. And when the data across the boundary of acousto-optic alarm, the first time to notify the management to carry out on-site processing, to achieve the real-time monitoring of the operational status of substation equipment, and designed the upper computer software development process, including the landing interface. Monitoring interface, equipment configuration, alarm system, history system and report generation six parts. Finally, using LabVIEW software to complete the design of the monitoring interface of the upper computer of the state monitoring system. The network operation of the whole state monitoring system is realized.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM63;TN92

【参考文献】