Research of networked correction time test on smart substation

Smart substation uses the networked correction time. The precision of correction time is the emphasis of positive test, but the reliability test on correction time is ignored easily, which should be the emphasis of negative test. In order to test the reliability of the software on networked correction time, and in view of currently widely used SNTP network correction time, negative test cases are designed, and combining which the stimulant SNTP server and the stimulant SNTP client are developed, and applying these testing tools, some bugs are discovered and amended. The testing technology on networked correction time and the analysis of the correlative problem are significant for testing the other modes of networked correction time in smart substation.