The front-end system

as an essential part of dispatching automation system

plays an important role in data transmission between master station and substation. A fault handling case is investigated when all 104 channels of single plane plant station exit in dispatching automation front-end system. Through channel comparative analysis

network topology structure test

software and hardware troubleshooting of key equipment and other technical means

the fault point is located and the problem is solved eventually. It is the first time to propose the familial defect in logic judgment program of front-end server

and its targeted treatment plan is given

which can provide a reference for automation professionals in other companies when dealing with the front-end server failure.