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高压电器  2015 

高压开关柜无线测温系统设计及可靠性研究

, PP. 152-160

Keywords: 高压开关柜,ZigBee,环境,过热,电磁骚扰

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Abstract:

过热是影响高压开关柜测温系统供电稳定性的重要危害源,而开关柜内的电磁骚扰是影响测温系统工作稳定性的主要因素。文中研制了一种高压开光柜无线测温系统,用于提高设备运行可靠性。笔者分析了ZigBee测温系统工作原理,优化设计了温度采集器硬件、ZigBee模块和数据集中器硬件结构;探索获得了温度采集和通信的流程,并编制了相关软件。通过有限元热场仿真获得了温度采集器附近的热场分布情况,采用热隔离结构设计,降低了电池和采集器硬件模块的温度,消除了高温可能造成的测量系统爆炸隐患。通过修改工作流程增加握手协议,并增设放电二极管,提高了系统抗干扰性能,试验表明该系统可通过严格的电磁兼容试验。

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