Design Of UAV Detection System For Space Electric Field

With the continuous climbing of domestic electricity demand,the scale of power grids have rapidly expanded and the structure has become more complicated.All fields have set increasingly high requirements on the stable and safe operation of the energy industry.As an important factor is considered in the design and operation of AC/DC transmission lines,the electric field can provide important data reference for the operation and maintenance of transmission lines.At the same time,as the ecological effect of electromagnetic fields has been inconclusive,the human body and the transmission lines under the safety of the countries in the world also have different standards.Therefore,the electric field detection of transmission lines not only plays an important role in the development of power grid,but also provides a theoretical basis for analyzing the distribution of electric field around the transmission line and the safety distance of human body exposed to the electromagnetic field.In this paper,a new method which could detect the electric field in the space by UAV mounted sensors was proposed according to the current technical methods of detecting the electric field in the space and the existing detection technology.The basic principle and performance of the photoelectric integrated electric field sensor were analyzed.The measuring range of the sensor was designed and the calibration of the linearity of the sensor calibration system was established according to the national standard.The three-dimensional model of the UAV was established.The distortion of the sensor around the UAV were calculated.The optimal distance between the sensor and the UAV body was proposed,and then a reliable installation method was designed.The function of the whole system was put forward.The hardware design and software development of airborne data acquisition,processing and transmission were completed with modular design.The module had good electromagnetic shielding characteristics and signal processing functions.The communication protocol of airborne system with verification was designed.The software of mobile terminal was designed and developed.The software had the function of data processing and realized the two-dimensional and three-dimensional electric field display.The test was carried out in the simulated line of UHV test base and compared with the result of the mainstream electric field tester.The test showed that the deviation of the system was within 10%,which meet the requirements of the actual project.The developed spacecraft-oriented UAV detection system in this paper could be used to detect the electric field of the transmission line and provided an effective basis for the human body to expose the safety value range in the power frequency electric field,which provided a more convenient means for detecting the space electric field,it had theoretical significance and practical project value.