The Development of Anti-ground Fault Suppression Test Device for Smart Meters

At present, with the increasing number of national smart grid construction network and the increasingly wide application of smart grid, China's intelligent energy meter verification requirements are more and more, especially the popularity of electronic meters, China's smart meters Performance with more and more comprehensive requirements. In the smart energy meter technical specifications, for the smart meter anti-ground fault suppression capability also made clear requirements. At this stage, because this test cannot be automated in the laboratory test, only through manual wiring operation, the method is not only inefficient and the safety of equipment and operators there are hidden dangers. In order to solve the above problems, this paper introduces a power meter anti-ground fault suppression test device, through the control relay to simulate the scene of A, B, C three phase of any phase of the ground fault, so as to check the power meter to ground fault with the ability of the suppression test is carried out. By comparing the amount of error change before and after the fault, the automatic judgment and testing of the energy meter are carried out. The device realizes the automation and efficiency of the test of the Anti - ground Fault Suppression of the energy meter, reduces the operation time and improves the working efficiency.