Measurement method and device for optical voltage transformer dynamic property research

The invention discloses a test method and a device for optical voltage transformer dynamic property research. A board NI7813R which contains field programmable gate array (FPGA) is utilized to substitute the FPGA in the closed-loop detection circuit of the original optical voltage transformer, an isolation device is arranged between an analog-digital/digital-analog converter of the closed-loop detection circuit and the FPGA of the board NI7813R for connection and communication, and the FPGA of the board NI7813R is connected with a computer through a peripheral component interconnect (PCI) bus; the test device has the capabilities of high speed data acquiring, storing and processing, closed-loop state variables can be displayed and stored by the computer, so the working condition of a system closed loop is monitored in real time; no other external equipment is needed, sine excitation signals and step-input singles with tunable frequency are provided by a hardware of the measurement device, so the frequency characteristic and the closed-loop step response performance of an optical voltage mutual inductance system are tested; and the frequency characteristic of an internal function module in an optical voltage transformer can be tested, a high frequency dynamic model of the module is built, and a foundation is laid for the optical voltage transformer dynamic property research.