Influence of Different Compensation Modes on Morphological and Electrical Characteristics of Secondary Arcs

UHV transmission lines are usually equipped with high-voltage shunt reactors. These reactors and the resulting degree of compensation affect the voltage, current, and other electrical characteristics of secondary arcs. In this paper, a low-voltage experimental simulation setup to produce secondary arcs in different compensation modes is established, and the morphological and electrical characteristics of recorded arc images and discharge waveforms are analyzed. For morphological characteristics, the degree of secondary arcs is compared for different compensation modes. For electrical characteristics, the arc waveform, volt–current characteristics, and zero-current time of secondary arcs are compared for different compensation modes. These results provide a foundation to determine the time of extinction of secondary arcs on overhead lines in the case of compensation, as well as technical support to develop effective arc suppression and extinction techniques.