Digital-analog integrated voltage transformer calibration system

A digital-analog integrated voltage transformer calibration system, used for calibrating a voltage transformer, the system comprising:

• a direct-current high voltage generator, wherein an output terminal is connected with an input terminal of a signal conversion module, to be used for outputting a standard voltage signal to the signal conversion module;
• the signal conversion module, having an input terminal connected with an output terminal of the voltage transformer and an output terminal connected with a digital quantity acquisition module;
• the digital quantity acquisition module, having an input terminal connected with the output terminal of the voltage transformer and an output terminal connected with a processing module, wherein,
• when the voltage transformer outputs an analog voltage signal, the signal conversion module is used for receiving the analog voltage signal output by the voltage transformer and the standard voltage signal output by the direct-current high voltage generator, converting the analog voltage signal to a second digital voltage signal, converting the standard voltage signal to a third digital voltage signal, and transmitting the second digital voltage signal and the third digital voltage signal to the digital quantity acquisition module;
• the digital quantity acquisition module is used for receiving the second digital voltage signal and the third digital voltage signal, and transmitting the second digital voltage signal and the third digital voltage signal to the processing module in a form of a message;
• when the voltage transformer outputs a first digital signal, the signal conversion module is used for receiving the standard voltage signal output by the direct-current high voltage generator, converting the standard voltage signal to the third digital voltage signal, and transmitting the third digital voltage signal to the digital quantity acquisition module;
• and the digital quantity acquisition module is used for receiving the first digital voltage signal output by the voltage transformer and the third digital signal output by the signal conversion module, and transmitting the first digital voltage signal and the third digital voltage signal to the processing module in the form of the message;
• the processing module, used for, when the voltage transformer outputs the analog voltage signal, calibrating the voltage transformer according to the received second digital voltage signal and third digital voltage signal, and for, when the voltage transformer outputs the first digital voltage signal, calibrating the voltage transformer according to the received first digital voltage signal and third digital voltage signal;
• and
• a synchronization module, having an output terminal connected with the direct-current high voltage generator, the digital quantity acquisition module, and the AD conversion module, and used for outputting a synchronous pulse signal to the direct-current high voltage generator and the digital quantity acquisition module, and outputting a pulse-per-second signal and an IRIG-B time synchronization pulse signal to the direct-current high voltage generator.