基于无线传输的长距离回路电阻数字化测试技术  

Digital Testing Technology for Long Distance Loop Resistance Based on Wireless Transmission

作　　者：刘佳雨 魏钢 吴学颖 宁知雨 刘航 LIU Jiayu;WEI Gang;WU Xueying;NING Zhiyu;LIU Hang(School of Electrical Engineering,Chongqing University of Science and Technology,Chongqing 401331,China;State Grid Chongqing Electric Power Company Ultra High Voltage Branch,Chongqing 400039,China)

机构地区：[1]重庆科技大学电气工程学院,重庆401331 [2]国网重庆市电力公司超高压分公司,重庆400039

出　　处：《电工技术》2025年第2期120-122,127,共4页Electric Engineering

基　　金：重庆市博士“直通车”科研项目(编号sl202100000105);重庆市教委科学技术研究项目(编号KJQN202101520);国家级大学生创新训练计划项目(编号202311551012)。

摘　　要：回路电阻是变电站设备参数的重要特性指标之一,是供电异常预警的关键信息,是电力系统性能和衰减的最可靠指标,但长距离回路电阻测试存在较多问题,如测试线路长度低、测量操作复杂、测量精度低等。针对上述问题,提出基于无线传输的长回路电阻测试方法,采用被测母线的邻相作为载流回路,设计了24位ADC模块、STM32控制模块、LoRa通信电路;基于邻相载流回路电阻试验方法,测得两相线的电压。通过系统装置的搭建,验证了方案可行性。Loop resistance is one of the important characteristic indicators of substation equipment parameters,which is the key information for abnormal power supply warning and the most reliable indicator of power system performance and attenuation.However,there are many problems with long-distance circuit resistance testing,such as low testing line length,complex measurement operations,and low measurement accuracy.This article proposes a long loop resistance testing method based on wireless transmission to address the above issues.Using the adjacent phase of the tested bus as the current carrying circuit,a 24 bit ADC module,STM32 control module,and LoRa communication circuit were designed.Based on the adjacent phase current carrying circuit resistance test method,measure the voltage of the two phase lines.The feasibility of the scheme was verified through the construction of the system device.

关 键 词：回路电阻 载流回路 ADC模块 邻相切换控制 

分 类 号：TM755[电气工程—电力系统及自动化]