基于优化ZigBee的特高压直流微安表的设计  

Design of Ultra High Voltage DC Microammeter Based on Optimized ZigBee

作　　者：徐慧平[1] 杨风开[1] 吴坚 XU Hui-ping;YANG Feng-kai;WU Jian(School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]华中科技大学电气与电子工程学院,湖北武汉430074 [2]国防科技大学前沿交叉学科学院,湖南长沙410073

出　　处：《仪表技术与传感器》2022年第2期37-40,共4页Instrument Technique and Sensor

基　　金：教育部第二批新工科研究与实践项目(E-NYDQHGC20202219)。

摘　　要：特高压直流微安表通常无法直接读数,且容易因涌流冲击而受损。为此采用ZigBee技术设计了无线通讯网络,以实现微电流传感器与显示系统之间的通讯,并对经典的ZigBee算法进行了优化以提高无线网络的抗干扰能力;为提升在大涌流作用下的保护性能,分析了不同保护元件的特性,设计出两级过流保护取样电路。基于所设计的算法和电路研制出特高压直流微安表,在实验室进行了测试,测量精度达到0.1级;在特高压现场试验中测试了优化ZigBee算法和过流保护电路的效果,结果表明,在通讯距离较远且电磁环境复杂的条件下能够较可靠地传输数据,并且能够有效保护现场实际涌流的冲击。The DC microammeter of the ultra-high voltage device was usually unable to read directly and was easily damaged by surges.Therefore,ZigBee technology was used to design a wireless communication network to realize the communication between the micro-current sensor and the display system,and the classical ZigBee algorithm was optimized to improve the anti-interference ability of the wireless network.In order to improve the protection performance under the influence of inrush current,the characteristics of different protection elements were analyzed,and two levels of over-current protection sampling circuit were designed.Based on the designed circuit,the ultra-high voltage DC microammeter was developed and tested in the laboratory,whose measurement accuracy reaches 0.1 level.The effect of optimized ZigBee algorithm and overcurrent protection circuit was tested in ultra-high voltage field test.The results show that the data can be transmitted reliably in the case of remote communication distance and complicated electromagnetic environment,and it can effectively protect the impact of actual inrush current.

关 键 词：特高压试验 直流微安表 优化ZigBee 两级过流保护 

分 类 号：TM932[电气工程—电力电子与电力传动]