An Electromagnetic Environment Monitoring Platform for AC-DC Parallel Line

With the rapid development of China's economy, the electricity demand is increasing and the scale of power grid construction is expanding. Large-scale construction of transmission and substation projects leads to an increasing shortage of transmission corridors, which inevitably leads to the formation of parallel erection of AC and DC transmission patterns. When the AC and DC transmission lines are erected in parallel, the coupling effect makes the hybrid electromagnetic environment of the AC and DC parallel lines more complicated. In this paper, with the track-supported intelligent robot as the hardware and the AC-DC mixed electromagnetic environment data analysis management system as the software, an automated synchronous measurement system integrating the measurement equipment of frequency electric field, radio interference, synthetic electric field and meteorological monitoring equipment is established. It can realize mobile multi-point time-divisional measurement and dynamic management of data with one set of equipment, carry out hybrid electromagnetic environment monitoring for the typical AC-DC parallel line sections that have been put into operation, and provide technical support for the rational design of subsequent large-scale UHV projects and the evaluation of the AC-DC hybrid electromagnetic environment.