【作者】 景常在；

【导师】 刘军民；

【作者基本信息】 大连理工大学 ， 通信与信息系统， 2011， 硕士

【摘要】 随着科学技术的快速发展和生产力的日益提高,企业和居民对电能质量的要求越来越高。电能传输是实现电力资源优化配置的关键过程,输电网作为实现电力传输的主要媒介,在实际的工作过程中往往会出现一些故障,对企业生产和人民的日常生活造成了很大的经济损失。电力传输监测系统能够在电网运行过程中监测和保障电力传输网的安全,在实现电能可靠供给中发挥很大作用。电力传输监测系统主要包含三方面功能：信号采集,信息传输以及信息处理。传输网自身的特点以及特殊工作环境给传输监测网络提出了新的挑战,随着无线通信技术的快速发展,出现多种无线通信协议。与其他协议相比,ZigBee在低功耗,低成本,可靠性等方面具有很大的优势,能够很好的提高了系统的整体性能。因此,本文采用基于ZigBee的线性网络解决方案。论文首先介绍了ZigBee的协议架构、网络组成以及拓扑结构。然后分析了电力传输线的信号特点以及故障信号的基本特征,确立了将高压信号经电量互感器,电量变送器以及AD转换模块进行转换的提取方案,并将处理后的信息在基于分簇的线性网络中进行传输。建立了适用于分簇网络的超帧结构,详细的介绍了网络中节点在超帧结构中的工作机制。系统硬件平台主要是基于传感器节点的设计,包括基于CC2430的簇内成员节点以及高辐射能力的簇首节点设计,还包括串口电路,电源电路以及JTAG电路等。网络的软件平台采用IAR下的Z-Stack开发,实现了ZigBee协议下网络的建网以及加入网络等过程,最后设计了实现人机交互的上位机界面,实现了数据库的存储、删除、修改等操作。论文最后对整个系统的硬件设计以及软件开发进行了测试,同时对分簇网络的性能进行了仿真分析。测试结果表明：本文的设计方案具有较好的精度,能够对故障信号进行提取,满足电力传输故障监测的要求。仿真结果表明：基于分簇的线性网络与传统的线性网络相比具有较高的可靠性,较高的数据有效率以及较低的能耗。更多还原

【Abstract】 As the rapid development of technology and the improvement of productivity, enterprise and human need higher quality of power. The transmission of power is an important way to achieve the balance of power allocation, power transmission network is the main medium of power transmission, on the power line there are always some faults which result in critical economic losses to the enterprise and human. The power transmission monitoring system could detect the faults in the transmission line and protect the safety of transmission network, and play an important role in the safe transmission of power resource.Power transmission monitoring system has three kind of function: signal collecting, information transmission and the information processing. The characters of power transmission line, together with the special environment which the monitoring network works in bring new challenge to the system. As the progress of wireless communication, lots of wireless communication protocols are appearing. Compared with other protocols, ZigBee has advantages in low-power, low-cost and high reliability. It could improve performance of the monitoring system. So we choose the ZigBee based method of power transmission monitoring system.Firstly, the paper introduces the structure, composition and topology of network of ZigBee briefly, then analyses the characters of the signal in the transmission line and the feature of the trouble signal, establish the method which converts the signal by power transformer, electricity transducer and the AD module. After processed, the signals are transmitted by the cluster-based linear network. Meanwhile, we build a new super-frame structure which is appropriate to the monitoring system, and describe the working mechanism of nodes in detail. The main work of hardware design is the node design, includes the wireless sensor node based on CC2430 and the cluster-head node. Also includes the power module, the serial module and the JTAG module. The exploitation of network software platform is based on Z-Stack programming, achieving the process of creating network and joining appointed network. At last, we design the upper operating software to realize the basic operation of database as store, edit and delete.In the end, this paper tests the hardware design and the software programming of the whole system, also analyses the simulation result of the cluster-based network’s performance. The testing result proves that our method has good accuracy. It could acquire the trouble signal, so it can be used to monitor the power transmission. The simulation result demonstrates that, compared to normal linear network, communication mechanism in the cluster-base network with new super-frame structure has been well developed in data reliability, effectiveness and low-power consumption更多还原