Parallel protective gaps are commonly employed for lightning protection of transmission lines. When struck by lightning, the air gap is ionized under the influence of a strong electric field, forming a plasma channel, also known as an arc. Traditional parallel gaps are incapable of effectively extinguishing this arc, which is detrimental to the long-term stable operation of transmission lines. Therefore, this paper introduces a novel self-energizing arc-extinguishing device with multiple gaps, termed the Grid-type Fracture Compression Arc-extinguishing Device (GFCAD). To validate the deionization effectiveness of this device, a combined approach of simulation and experimentation is adopted. Finite element analysis software, COMSOL Multiphysics, is utilized to simulate and analyze the plasma behavior within the device, while an impulse current generator is employed to conduct arc extinguishing stability tests. The simulation and experimental results demonstrate that the GFCAD can extinguish the arc within 3 ms without reignition. Moreover, the device exhibits no signs of damage after withstanding high-current impulses, underscoring the stability and effectiveness of the GFCAD in arc-extinguishing.