Test method of IED network clock synchronization precision based on GOOSE mechanism

• Main Authors: CHEN JIONGCONG, YANG YINGAN, DI JUNFENG, LIANG XIAOBING, WEI YONG, LI JUNGANG, HUANG SHU, SHI HONGGUANG, XUAN WENJIAN, CUI QUANSHENG
• Format: Patent
• Language: Chinese; English
• Published: 11.01.2012
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention relates to a test method of IED network clock synchronization precision based on a GOOSE mechanism. The method is characterized in that: two short-range optical fibers, which have a same length and a same nature and are led from a GOOSE source, are respectively connected with a clock tester and an IED to be tested; the IED to be tested forms clock synchronization with the clock tester; the GOOSE source sends a GOOSE message simultaneously to the clock tester and the IED to be tested; the IED to be tested and the clock tester receive the message and respectively acquire a time label T2 and a time label T3; the IED to be tested sends the GOOSE message to the clock tester and a difference between the time label T2 and the T3 is a clock synchronization error value of the IED to be tested. Each function in the method is independent. The clock synchronization precision test of a plurality of synchronization modes, such as IEEE1588, SNTP and the like, can be realized according to demands. During the pr