Test system for simultaneously implementing voltage withstanding test and local discharge measurement of high-voltage cable

The utility model relates to a distributed local discharge measurement test system based on voltage withstanding test of a high-voltage cable. The system consists of hardware devices such as an alternating-current variable frequency resonant power supply without local discharge, a high-voltage power cable circuit, a cable terminal, cable joints, a high-frequency local discharge sensor, signal acquisition units, an optical fiber and a measurement host; and the voltage withstanding test and the distributed local discharge measurement test are simultaneously implemented. Through the system, certain small local defects which cannot be detected in the voltage withstanding test of the high-voltage cable circuit can be effectively and timely detected, the problem of signal attenuation produced during local discharge is measured from one end is solved, and an effective and sensitive method is provided for inspection and judgment of the construction quality and the insulating quality of the high-voltage cable circuit.