Physical Simulation of the Spectrum of Possible Electromagnetic Effects of Upward Streamer Discharges on Model Elements of Transmission Line Monitoring Systems Using Artificial Thunderstorm Cell

The results of a physical simulation using negatively charged artificial thunderstorm cells to test the spectrum of possible electromagnetic effects of upward streamer discharges on the model elements of transmission line monitoring systems (sensor or antennas) are presented. Rod and elongated model elements with different electric field amplification coefficients are investigated. A generalization is made about the parameters of upward streamer current impulse and its electromagnetic effect on both kinds of model elements. A wavelet analysis of the upward streamer corona current impulse and of the signal simultaneously induced in the neighboring model element is conducted. A generalization of the spectral characteristics of the upward streamer current and of the signals induced by the electromagnetic radiation of the nearby impulse streamer corona on model elements is made. The reasons for super-high and ultra-high frequency ranges in the wavelet spectrum of the induced electromagnetic effect are discussed. The characteristic spectral ranges of the possible electromagnetic effect of upward streamer flash on the elements of transmission line monitoring systems are considered.

Application of IoT in power transmission line monitoring

Nowaday in Vietnam, the verification and maintenance of 220kV - 500kV transmission lines is mainly done by manual labor. However, this task is quite hard, the workers have many difficulties such as the long moving distance (hundreds of kilometers) through many areas of complex terrain to verify the data and prevent the widespread problems. The efficiency and quality of line check also depends on the enthusiasm and experience of the workers. The demand to develop the power grid is constantly increasing to release full capacity from solar power plants, wind power plants, making the line always operating in overload state. Some problems are caused by the rapid growth of plants violating high voltage transmission line safety distances.Therefore, an online transmission line monitoring system will be a useful tool for improving the line operation and reduce the pressure for workers. In this paper, the application of the wireless data transmission platform and LABVIEW programming software to build a system for online data collection of lines, program settings, applications on mobile devices. Dynamic monitoring of lines over the Internet reduces the workload of workers.