基于PLC和GPS的PT二次压降监测系统的设计与研究

Design and Research of PT Secondary Voltage Drop Monitoring System Based on PLC and GPS

为了打破现有的人工拉线对PT二次压降进行测量的传统模式所存在的种种弊端,设计了一种基于低压电力线载波通信(PLC)技术和利用GPS授时作为同步时间源的PT二次压降监测装置。本文利用PLC技术的通信特点,并与高精度GPS授时功能有机结合起来,给出了对PT二次压降进行测量并确保其测量精度的设计原理和方法。实验表明,现场无需布线即可实现PT二次压降的高精度监测和数据的实时远传,数据采集真实有效,精度高,可靠性好,工作效率和自动化水平大大提高。

In order to cancel abuses of traditional modes in PT secondary voltage drop measurement by manual routing, a PT secondary voltage drop monitoring device based on PLC techniques and the using of GPS timing is developed. By utilizing the characteristics of PLC technology for communication and combining the high accuracy GPS timing organically, the paper gives the principle and the method of measuring PT secondary voltage drop and guaranteeing its t accuracy. The experiment result has shown that high accuracy monitoring of PT secondary voltage drop, and real time and remote transmission of the data can be achieved without wiring in the field. The data acquiring is real and effective with accuracy, reliability, efficiency and automatization all being improved.