Abstract
It is generally acknowledged that high voltage direct current (HVDC) transmission line endures the drawback of large area, because of which the utilization of cable for space charge density monitoring system is of inconvenience. Compared with the traditional communication network, wireless sensor network (WSN) shows advantages in small volume, high flexibility and strong self-organization, thereby presenting great potential in solving the problem. Additionally, WSN is more suitable for the construction of distributed space charge density monitoring system as it has longer distance and higher mobility. A distributed wireless system is designed for collecting and monitoring the space charge density under HVDC transmission lines, which has been widely applied in both Chinese state grid HVDC test base and power transmission projects. Experimental results of the measuring system demonstrated its adaptability in the complex electromagnetic environment under the transmission lines and the ability in realizing accurate, flexible, and stable demands for the measurement of space charge density.
Highlights
High voltage direct current (HVDC) transmission system is widely applied for its economical, technical, and environmental advantages in both long distance and bulk power transmission
The detection of electromagnetic environment plays an important role in the construction of high voltage transmission line
The parameters of electromagnetic environment under high voltage direct current (HVDC) transmission lines mainly consists of space charge density, ion current density, magnetic induction intensity, audible noise and radio interference, among which the space charge density is believed to be an important parameter for evaluation of electromagnetic environment that directly affects human body
Summary
High voltage direct current (HVDC) transmission system is widely applied for its economical, technical, and environmental advantages in both long distance and bulk power transmission. The consequent electromagnetic environmental problem has caused wide public concern as well as huge psychological pressure. The detection of electromagnetic environment plays an important role in the construction of high voltage transmission line. The use of high voltage transmission lines can cause the increase of the space charge density of the conductors, which may exert psychological and physiological impacts on human body [1–3]. The parameters of electromagnetic environment under HVDC transmission lines mainly consists of space charge density, ion current density, magnetic induction intensity, audible noise and radio interference, among which the space charge density is believed to be an important parameter for evaluation of electromagnetic environment that directly affects human body. In order to improve the measuring equipment design and limit the space charge density to satisfy the electromagnetic environmental standard, the development of an accurate and efficient measuring method and system is extremely urgent [4,5]
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