Relay protection secondary circuit visualization device

The invention discloses a relay protection secondary circuit visualization device. A main transformer protection failure starting bus differential secondary circuit is taken as an example ,but not limited to the loop, the device comprises bus differential protection, a main control unit and a visual secondary circuit module. The bus differential protection is respectively connected with a main transformer protection first group of high failure starting and a main transformer protection second group of high failure starting. The bus differential module comprises a main transformer high-voltageside failure switching-in and a main transformer failure solution re-pressing switching-in. The second group of high-failure starting of the bus differential protection and the main transformer protection is connected with an information quantity acquisition module respectively; the main control unit comprises a central processing module, a control module, a storage module and a communication module; the central processin