Device and method for measuring unbalance degree of cluster capacitor bank of power transmission line

The invention provides a device and a method for measuring the unbalance degree of a cluster capacitor bank of a power transmission line, which can accurately find a capacitor with large deviation from the cluster capacitor bank, and the device comprises a parallel inductance module, a voltage and current detection module, a power supply module for supplying power to the capacitor bank to be detected, and a control module which is respectively connected with the power supply module, the voltage and current detection module and the parallel inductance module and is used for controlling the power supply module to output a power supply, adjusting voltage and frequency, receiving voltage and current detected by the voltage and current detection module and adjusting inductance of the parallel inductance module; and the control module controls the voltage and current detection module to detect and collect bridge arm current and unbalanced current of the capacitor bank to be detected and corresponding test voltage a