Method for detecting ac and dc arc faults based on rogowski coil magnetic coupling resonance
AssigneeFujian Tongli Intelligent Machinery Technology Co., Ltd.
InventorsXin ZHENG, Yaozong WANG, Rongjun WU
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Abstract
The provided is a method for detecting AC and DC arc faults based on Rogowski coil magnetic coupling resonance, where a line to be detected passes through a uniformly wound Rogowski coil, and by adjusting the dimensions of the framework structure, the number of winding turns, and the values of a parallel-connected inductor and capacitor, a specified resonant frequency is obtained; when an arc fault occurs in the line to be detected, the Rogowski coil amplifies the characteristic frequency band signal corresponding to the resonant frequency by means of magnetic coupling resonance, so as to detect an arc fault state.
Claims12
A method for detecting alternating-current (AC) and direct-current (DC) arc faults based on Rogowski coil magnetic coupling resonance, wherein a line to be detected passes through a Rogowski coil uniformly wound, and by adjusting dimensions of a framework structure, number of winding turns, and values of a parallel-connected inductor and capacitor, a resonant frequency is obtained;
- when an arc fault occurs in the line to be detected, the Rogowski coil amplifies a characteristic frequency band signal corresponding to the resonant frequency by means of magnetic coupling resonance to detect an arc fault state.
A sensor for detecting AC and DC arc faults based on Rogowski coil magnetic coupling resonance, comprising:
- a Rogowski coil uniformly wound, and an inductor and/or capacitor connected in parallel across two ends of the Rogowski coil, wherein by adjusting dimensions of a framework structure, number of winding turns, and values of a parallel-connected inductor and capacitor, a resonant frequency is obtained;
- a line to be detected passes through the Rogowski coil, and when an arc fault occurs in the line to be detected, the Rogowski coil amplifies a characteristic frequency band signal corresponding to the resonant frequency by means of magnetic coupling resonance to detect an arc fault state.
Dependencies are inferred from the claim text.