A Survey of Electromagnetic Influence on UAVs from an EHV Power Converter Stations and Possible Countermeasures

Yanchu Li,Liang Yin,Keyue Li,Shufang Li,Stanimir Valtchev,Qingqing Ding

doi:10.3390/electronics10060701

Abstract

It is inevitable that high-intensity, wide-spectrum electromagnetic emissions are generated by the power electronic equipment of the Extra High Voltage (EHV) power converter station. The surveillance flight of Unmanned Aerial Vehicles (UAVs) is thus, situated in a complex electromagnetic environment. The ubiquitous electromagnetic interference demands higher electromagnetic protection requirements from the UAV construction and operation. This article is related to the UAVs patrol inspections of the power line in the vicinity of the EHV converter station. The article analyzes the electromagnetic interference characteristics of the converter station equipment in the surrounding space and the impact of the electromagnetic emission on the communication circuits of the UAV. The anti-electromagnetic interference countermeasures strive to eliminate or reduce the threats of electromagnetic emissions on the UAV’s hardware and its communication network.

Highlights

With the rapid development of modern science and technology, the co-existence of sophisticated megawatt electric power converters, together with highly sensitive electronic equipment, has become increasingly widespread
The high-density and wide-spectrum electromagnetic emissions generated by the power electronics equipment operation fill the entire space, forming a complex electromagnetic environment
Electromagnetic interference is mainly caused by three elements: the source of interference, the way of interference, and the device being interfered with

Summary

Introduction

With the rapid development of modern science and technology, the co-existence of sophisticated megawatt electric power converters, together with highly sensitive electronic equipment, has become increasingly widespread. The high-density and wide-spectrum electromagnetic emissions generated by the power electronics equipment operation fill the entire space, forming a complex electromagnetic environment. The complex electromagnetic environment requires electronic equipment and power supplies to have robust and ultimate electromagnetic compatibility. For any electronic equipment working in an electromagnetically polluted environment, the suppression of electromagnetic interference has become nowadays, a necessary accompanying technology. The main structure of the converter station includes a valve hall, a converter transformer, AC switchyard, smoothing reactor, filter, reactive power compensation equipment, etc. The high-voltage converter valve is subjected to high electrical stress, large energy transients, and high electromagnetic noise intensity. The electromagnetic interference by coupling mechanisms inside the high-voltage power converter valve is complex. Radio Frequency Interference—And What to Do About It. Available online: http://www.radiosky.com/journal0901.html

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