本文關鍵詞：基于ZigBee的變電站一次設備狀態(tài)監(jiān)測系統(tǒng)　出處：《安徽理工大學》2014年碩士論文　論文類型：學位論文

  更多相關文章： 變電站設備 狀態(tài)監(jiān)測 監(jiān)測系統(tǒng) ZigBee CC2430 Z-Stack LabVIEW

【摘要】：變電站作為電網(wǎng)的重要組成部分,其安全穩(wěn)定運行意義重大。長期以來,變電站內(nèi)一次設備的檢修方式以故障檢修和計劃檢修為主,這些傳統(tǒng)檢修方式的弊端顯而易見。隨著現(xiàn)代科技水平的不斷發(fā)展,對一次設備的運行狀態(tài)進行在線監(jiān)測,并結合在線監(jiān)測的結果對一次設備開展檢修,已成為變電站檢修的主要手段。本文設計的狀態(tài)監(jiān)測系統(tǒng)就是對一次設備的運行狀態(tài)進行在線監(jiān)測,發(fā)現(xiàn)異常時及時報警,保障電網(wǎng)安全可靠地運行。目前已投入運行的設備在線監(jiān)測裝置,一般采用有線數(shù)據(jù)傳輸方式。然而,變電站一次設備數(shù)量很多,結構復雜,采用有線的數(shù)據(jù)傳輸方式,其布線繁瑣、成本高昂、易遭雷擊及老化,并且裝置的位置不能隨意移動,靈活性差。因此,本文設計的基于ZigBee的變電站一次設備狀態(tài)監(jiān)測系統(tǒng)有著實際意義,它為提高變電站運行自動化水平和電網(wǎng)的運行可靠性提供了一種解決方案。 根據(jù)系統(tǒng)的設計要求及預實現(xiàn)的功能,將系統(tǒng)的整體結構分為數(shù)據(jù)采集部分、無線數(shù)據(jù)傳輸部分和上位機監(jiān)測三個部分。在系統(tǒng)硬件設計方面,主要是針對數(shù)據(jù)采集部分和無線數(shù)據(jù)傳輸部分的設計。本文選用TI公司的CC2430芯片為主控芯片,根據(jù)ZigBee網(wǎng)絡的特點,將硬件劃分為協(xié)調(diào)器節(jié)點、路由器節(jié)點和終端節(jié)點三部分,設計了各節(jié)點的硬件結構框圖。完成了射頻及擴展電路、傳感器電路、電源供電電路、JTAG接口電路、串口通信電路、報警及復位電路的設計。 在系統(tǒng)的軟件設計方面,本文采用TI公司Z-Stack協(xié)議棧,主要是針對協(xié)議棧應用層的開發(fā)。設計了協(xié)調(diào)器節(jié)點、路由器節(jié)點和終端節(jié)點的軟件流程圖,實現(xiàn)了終端節(jié)點按照指令采集數(shù)據(jù)并將數(shù)據(jù)進行無線傳輸?shù)墓δ�。通信協(xié)議包括無線通信協(xié)議和串口通信協(xié)議兩部分,分別對協(xié)調(diào)器節(jié)點的命令幀格式、終端節(jié)點的數(shù)據(jù)幀格式、上位機的命令幀格式和協(xié)調(diào)器節(jié)點的數(shù)據(jù)幀格式進行了設計。 在上位機軟件設計方面,利用了NI公司的LabVIEW測控軟件開發(fā)了系統(tǒng)的人機界面。該界面可以實時顯示設備狀態(tài)數(shù)據(jù),并且在數(shù)據(jù)越界時進行聲光報警,第一時間通知管理人員進行現(xiàn)場處理,實現(xiàn)了對變電設備運行狀態(tài)的實時監(jiān)測。設計了上位機軟件開發(fā)流程,包括登陸界面、監(jiān)測界面、設備配置、報警系統(tǒng)、歷史系統(tǒng)和報表生成六部分。最后,利用LabVIEW軟件完成了狀態(tài)監(jiān)測系統(tǒng)上位機監(jiān)測界面的設計,實現(xiàn)了整個狀態(tài)監(jiān)測系統(tǒng)的組網(wǎng)運行。
[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.
【學位授予單位】：安徽理工大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM63;TN92

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