Active arc suppression device based on voltage?source convertor with consideration of line impedance in distribution networks

In the non-effectively grounding distribution system, residual current under single-line-to-ground (SLG) fault threatens safety of human being and power supply equipment. Active arc suppression device has been proved to be effective for SLG when line impedance is ignored. However, in practice, varies with location load flowing through brings about additional voltage drop, which increases not dealt by conventional methods. To achieve accurate existence impedance, neutral-to-ground reference full ground-fault compensation firstly derived a detection method then proposed. The pre-fault post-fault currents are used eliminate influence on drop. A dual-loop controller designed. prototype active was developed. results simulation experiment validate effectiveness proposed method.