Intelligent monitoring system of total electric field under UHVDC transmission line based on wireless sensor network

Ground total electric field under ultra high voltage direct current (UHVDC) transmission lines is an important parameter for the evaluation of the electromagnetic environment. In view of its random change because of the changes of environmental and climate factors, it is necessary to perform long-time measurement for the research and evaluation. Utilizing the advantages of wireless sensor network (WSN) in respect of high flexibility and strong mobility and combining with multi-agent technology, an intelligent monitoring system of ground total electric field was developed. The state transformation of each node agent in the monitoring system could be controlled according to the electric field intensity and its residual energy, meanwhile through exchanging information each node agent could be dynamically clustered with other node agents in the monitoring system, thus the monitoring task could be accomplished by self-organized cooperation. Then energy consumption analysis of the self-organization mechanism based on multi-agents was performed. Finally, the proposed intelligent monitoring system of ground total electric field was applied to actual engineering, and the feasibility of the proposed intelligent monitoring system as well as the effectiveness of the self-organization mechanism in energy-saving were verified by measured results.