The invention provides a DC controllable
lightning arrester device. The DC controllable
lightning arrester device comprises a
lightning arrester body and a
hybrid switch, wherein the
lightning arrester body comprises a
lightning arrester fixed part and a
lightning arrester controllable part, the lightning arrester fixed part and the lightning arrester controllable part respectively comprise at least one column of lightning arrester units, one end of a parallel circuit formed by the lightning arrester controllable part and the
hybrid switch is grounded, the other end is connected with the lightning arrester fixed part, the
hybrid switch comprises a
thyristor valve switch and a mechanical switch which are connected in series, and the hybrid switch is connected with two ends of the lightningarrester controllable part in parallel. The DC controllable lightning arrester device is advantaged in that the
thyristor valve switch and the mechanical switch are utilized to form the
high voltage DC hybrid switch type controllable lightning arrester, the
thyristor switch is ensured to be reliably turned off, so the lightning arrester returns to normal operation, the lightning arrester body achieves dual functions of energy release and
overvoltage suppression, a
charge rate of the whole lightning arrester under the operation
voltage is reduced, the
safety margin of the lightning arrester isimproved, and reliability of the lightning arrester is enhanced.