Early detecting and protecting of fault arcs based on chaos

In switch tank, fault arcs fault is constant and disastrous trouble. At the present time, the protect project of fault arcs function after generating aflame arcing, which does not avoid of generating arcing. Switch tank and electric facilities must be destructed by aflame arcing. In the paper, simulation experimentations indicate that the method of arc sounds detecting based on Lyapunov exponents can extract arc sounds inundated background of complicate noise. With arc sounds generated before aflame arcing, the system of fault arcs early warning is established, which avoids endangerment brought about by aflame arcing and establishes good foundation to fault arcs protection In switch tank. The process of fault arcs protection is separated two stage. There are arc sounds before generating aflame arcing, The system send out early warning by detecting arc sounds, which can avoid of generating fault arcs.