Lead sealing impedance alternating current measurement system and method

The invention relates to a lead sealing impedance alternating current measurement system and method, and belongs to the technical field of electric power detection. The lead sealing impedance alternating current measurement system comprises a signal acquisition module which is used for acquiring a voltage source of a loop to be measured and filtering the voltage source to obtain an alternating current isolation signal; the signal transmission module is electrically connected with the signal acquisition module and is used for receiving the alternating current isolation signal and carrying out coupling processing and isolation sampling on the alternating current isolation signal to obtain a first current signal and a second current signal; and the control module is electrically connected with the signal transmission module and is used for determining the lead sealing impedance of the loop to be detected based on the first current signal and the second current signal. Insulation and voltage resistance safety of