抗用电器干扰的电力线长度在线测量方法  

On Line Measurement of Power Line Length against Interference of Appliances

作　　者：孙永明 宋士刚 占兆武 何先灯[2] 吴在军 何晓蓉 冷安辉 SUN Yongming;SONG Shigang;ZHAN Zhaowu;HE Xiandeng;WU Zaijun;HE Xiaorong;LENG Anhui(Shenzhen Guodian Technology Communication Co.,Ltd.,Shenzhen 518109,Guangdong,China;Xidian University,Xi’an 710071,Shaanxi,China;Shenzhen Smartchip Microelectronics Technology Co.,Ltd.,Shenzhen 518031,Guangdong,China)

机构地区：[1]深圳市国电科技通信有限公司,广东深圳518109 [2]西安电子科技大学,陕西西安710071 [3]深圳市智芯微电子科技有限公司,广东深圳518031

出　　处：《电网与清洁能源》2021年第12期33-38,共6页Power System and Clean Energy

基　　金：陕西省重点研发计划(2019ZDLGY09-02);国家自然科学基金项目(62001351)。

摘　　要：在智能低压电网中,用电器干扰是影响电力线长度测量准确率的主要因素。利用信道传递函数,建立了电力线长度在线测量模型,仿真分析了用电器对传递函数相位的影响,结合线性优化技术,提出了一种抗用电器干扰的电力线长度在线测量方法。仿真结果表明,所测量的误差不大于3%。研究成果为提高用电器干扰下电力线网络物理拓扑测量的准确率提供了基础。The interference of electrical appliances is the main factor affecting the accuracy of power line length measurement in a smart low-voltage grid.Based on the channel transfer function,an online measurement model of power line length is established.The influence of electrical appliances on the phase of transfer function is simulated and analyzed.According to linear optimization technology,an online measurement method of power line length against the interference of appliances is proposed.The simulation results show that the measurement error is less than 3%and the result of this study can provide a basis for improving the accuracy of physical topology of the power line network under the interference of electrical appliances.

关 键 词：电力线通信 电力线长度测量 信道传递函数 转移参数 拓扑测量 

分 类 号：TN913.6[电子电信—通信与信息系统]