Master-slave distributed zero cross controlling thyristor valve

The utility model discloses a zero-passage control thyristor valve with a master-slave distributed type, and the zero-passage control thyristor valve comprises a controller, a zero-passage detection control module, a thyristor valve and a power capacitor which are all arranged fixedly in a box body or a screen cabinet and form an independent device. The zero-passage detection control module and the thyristor valve have the self-adaptive zero-passage control ability, and form into a distributed type topology. The switch is controlled in integration by a controller, and the switch can also be conducted by that a three-phase type power capacitor with the triangular connection is controlled by two thyristor valves. The utility model simplifies the controller, and realizes the self-adaptive stochastic switch control without the transition process.