无线电能表串户排查的传输损耗研究
2018-07-24寇英刚范洁楚成博陈霄
寇英刚 范洁 楚成博 陈霄



摘 要:针对传统电能表接线排查中直接拉闸或利用有线信号进行判断的缺点,本文首次提出了一种使用无线信号进行串户分析的方案。该方案不仅可以提高排查效率,同时大大降低了对用户的影响。由于高频信号在传输过程中损耗大,易受现场复杂环境的干扰,不同用户之间难以区分。在传输线理论的基础上,对高频信号在电力线传输的损耗特点进行了详细的分析,并以此为基础,对该无线排查系统的理论模型进行验证。计算给出了该系统在不同环境下的有效判断范围。并最终通过实测数据进一步证实了该方案的可行性。
关键词:电力线;高频;传输损耗;无线
DOI:10.15938/j.jhust.2018.03.005
中图分类号: TM76
文献标志码: A
文章编号: 1007-2683(2018)03-0028-06
Study Onpower Loss in Watt-hour Meter Wiring Check Based on Wireless Solutions
KOU Ying-gang, FAN Jie, CHU Cheng-bo, CHEN Xiao
(State Grid Jiangsu Electric Power Co. LTD., Nanjing 210000,China)
Abstract:Switching out directly or judging by wired signal was the conventional method of checking meter wiring. A method which improves the efficiency of troubleshooting and greatly reduces the influence on users is presented by this paper for users of electricity using wireless signals for the first time. As the high-frequency signal in transmission process wastes largely and affected easily by complicated interference in the scene, it is difficult for different users to distinguish from. The loss characteristics of high frequency signal in power are analyzed in detail which based on the theory of power transmission line. Besides, the paper has verified the theoretical model of the wireless troubleshootings system and calculated the effectively distinguishable range of system in different scenes. Ultimately, the feasibility of scheme is confirmed by the measured data.
Keywords:electric-power line; high frequency; transmission loss; wireless
0 引 言
电能表的接线检查,一直以来都是困扰电力部门的一大难题[1]。接线错误,即电能表串户一旦发生,将产生一系列的问题,严重影响居民的用电质量[2]。由于一般的排查方法需要拉闸断电并入户确认,不仅效率低下,限制较多,同时也对用户的正常用电带来:不可避免的影响[3-4]。使用无线信号接收技术进行串户分析,不仅可以克服入户检查的诸多限制,同时也可以提高效率,减少对用户影响,是未来串户排查方式的不二选择。但由于高频信号衰减快、容易受干扰以及现场环境复杂等因素,使得利用无线信号进行串户分析变得十分困难[5-7]。
无线式串户分析首先要解决的问题,是不同用户信号损耗的分析。……
