Test device for simulating high-voltage cable intermediate joint interface creeping discharge

The invention relates to the technical field of cable intermediate joint interface pressure test, and more particularly to a test device for simulating high-voltage cable intermediate joint interfacecreeping discharge. The test device comprises a test sample consisting of a cross-linked polyethylene film tablet and a silicone rubber film tablet in stacking arrangement, a pressure applying device,a pressure sensor, a power source, a high potential electrode, a low potential electrode and a data acquisition system, wherein the low potential electrode is a ring electrode that is integrally formed with the cross-linked polyethylene film tablet, the ring electrode and the pressure sensor are both disposed between the cross-linked polyethylene film tablet and the silicone rubber film tablet, the high potential electrode is disposed at the center of the ring electrode, the positive pole of the power source is connected to the high potential electrode, the negative pole of the power source is connected to the ring el