Wide-zone electric-net phasor synchronous measuring device whose synchronous time scale can be freely set

The invention discloses Wide Area Network synchronized phasor measurement device with time free set, which is made of adaptive interval sampling module, synchronous time modules and microprocessor module. The structure is simple, can achieve the difficult decoupling treatment of 'time synchronization' and 'Frequency Synchronization' in phasor synchronous device. Synchronization set time scales flexibly can be reached, sampling data window can adjusts to the signal frequency adaptive changes (that is, each interval sampling data in the window is equivalent to the demand), so as to ensure continuous precision operation phasor synchronization measurement of wide area network.