Design of On-Line Monitoring System for UHVDC Earth Electrode

Abstract

At present the detecting of ultra high voltage direct current (UHVDC) earth electrode frequently uses manual inspection. This method can't get the real-time operational data of the earth electrodes, and meanwhile, the labor cost is very high. In order to satisfy the security needs of UHVDC, this paper designs an on-line monitoring system for UHVDC earth electrode. By 3G wireless communication-technologies, the system can monitor remotely many kinds of data such as the value of the grounding current, water level of the observation well, soil temperature and humidity near the earth electrode, the micro-climate around the earth electrode site, video data, etc. Through analyzing the datum, the system has broad prospect on fault detection and life evaluation of the UHVDC earth electrode.

System for Monitoring Crop Growth Environment and Crop Growth Parameters by Wireless Communication

“…Therefore, this paper adopts wireless communication monitoring for long-distance data transmission. It can not only ensure the precision and accuracy of the data of crop growth environment and crop growth parameters, but also ensure the stability of data transportation, which can meet the new agricultural production needs and expand the actual value and operation space of agriculture.According to the study of Ni P, the detection of uhv dc grounding electrode mostly adopts manual detection, indicating that this method cannot obtain real-time operation data of the grounding electrode [1]. At the same time, labor costs are very high.…”

“…According to the study of Ni P, the detection of uhv dc grounding electrode mostly adopts manual detection, indicating that this method cannot obtain real-time operation data of the grounding electrode [1]. At the same time, labor costs are very high.…”