Study Of Arc Suppression Coil Controller And Fault-line Selection Instrument Based On DSP

With the development and perfection of the arc-suppression coil technology with automatic tuning function, the application of grounding mode with arc-suppression coil has become more widespread, which effectively solved the problem in the compensation of capacitor current in single-phase grounding fault of power grid, and improved the continuity and reliability of power supply. However, there still exist problems in grounding fault line detection, measurement precision of grounding capacitance etc. whose solutions are the aim of the paper.Based on the analysis of the current arc-suppression coil grounding systems and fault line detection techniques in China and abroad, fuzzy multi-line selection criterion ways to improve arc-suppression coil grounding system single-phase fault line selection accuracy. Through a large number of simulations, test the effectiveness of the method. In this paper, based on the injection signal distribution network capacitive current calculation method and its realization, increased arc-suppression coil automatic tuning adaptability. Design with arc-suppression coil tuning control and single-phase fault line selection function integrated controller, completed the installation and the overall structure of the software and hardware design, and improved utilization.