Research on Automatic Test System of On-site Relay Protection Device

The local configuration scheme of relay protection has become the trend of substation development in the future. Based on the modular design idea, an automatic test system suitable for on-site relay protection device is developed, so as to realize synchronous closed-loop test for several local protection devices of the same type from different manufacturers. The automatic test system can synchronously modify the setting values, control words and pressing plates of multiple devices. It can synchronously apply excitation to multiple devices to complete the function test of electrical quantity, automatically generate the test report, which greatly shorten the test time of local protection device. At the same time, through the analysis of the data model of the local protection device, the protection function of the tested device configuration is obtained, and the corresponding test cases are generated intelligently, which can highly improve the development efficiency of the test cases. Under the premise of ensuring the reliability of detection, the research results are applied to three sets of local protection devices for synchronous automatic test, which extremely improves the detection efficiency of local protection devices, and it has achieved good results in preliminary application.