Sampling device for intruding wave current in substation

A sampling device for intruding wave current in a substation comprises a Rogowski coil measurement module, a signal regulation module, an analog-to-digital conversion module, a clock control module, a data processing module, a data memory and a power supply system. A Rogowski coil is a sensor for measuring the device and the Rogowski coil measurement module comprises the Rogowski coil and an integrator. The signal regulation module is composed of a TVS tube and an operation amplifier chip LM353. The analog-to-digital conversion module includes a chip AD9238. An active crystal oscillator with 10 MHz is employed by the clock control module for controlling a sampling rate of a signal. The data processing module comprises a chip EP1C144C8 and belongs to a programmable module. The data memory includes IS61LV1024 for storing sampling signals. A transmission interface chip has a function of data transmission.