基于PTR2000模块的直流系统接地故障多点监测的研究  

Research on Multiple Grounding Fault Detection of Direct Current System Based on PTR2000 Module

作　　者：戴勇[1] 白英杰[1] 张华[1] 

机构地区：[1]南京师范大学电气与自动化工程学院,江苏南京210042

出　　处：《南京师范大学学报（工程技术版）》2017年第2期30-36,共7页Journal of Nanjing Normal University(Engineering and Technology Edition)

摘　　要：直流系统是发电厂、变电站中十分重要的电源系统,其组成的供电网络是一个复杂的、并联支路众多的网络,而自身的可靠性及安全性直接影响到整个电力系统的安全.本文针对直流接地故障检测中因分布电容的存在而造成对检测结果的影响,设计了超低双频交流信号注入法,配置无线通信PTR2000模块和适用于本系统自定义的无线通信协议,实现无线多点数据采集和传送的功能,进行了接地电阻和电容值的测试和远程传送,测试结果证实了设计的正确性和可行性.Direct current system is an extremely important power system in power factory and the power supply network made up of it is a network of complex and multiple parallel branches. In the meantime,accountability and safety of the DCsystem itself have a direct impact on the safety of the the influences of distribution capacitors on detection resulting in the DCgrounding fault detection, the paper designs an ultra-low dual frequency AC signal injection metliod. Configured witli wireless communication module PTR2000 and self- defined wireless communication protocol adapted to the alleged system, it achieves wireless multijDle-jDoint data collection and transmission. This paper conducts tests and remote transmission of grounding resistance and capacitance value, andthe results verify validity and feasibility of the design.

关 键 词：直流系统监测 超低双频交流信号 PTR2000模块 无线数据传送 

分 类 号：TM93[电气工程—电力电子与电力传动]