Clock synchronization check method of substation automation system based on synchronous closed loop monitoring

• Main Authors: YANG SHENG, XI XINKUI, WANG YAJUN, ZHANG QINGWEI, WANG HE
• Format: Patent
• Language: Chinese; English
• Published: 20.03.2018
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; GENERATION; MULTIPLEX COMMUNICATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention discloses a clock synchronization check method of a substation automation system based on synchronous closed loop monitoring. The clock synchronization check method comprises a clock device and a timed device, the clock device and the timed device are connected via a station control layer network, the clock device comprises a state monitoring module part, a clock synchronization portconnecting part, a clock synchronization information sending part, a clock synchronization deviation value calculation part, an abnormality and error judging part and a clock synchronization error correction part, and the timed device comprises a station control layer device, a monitoring background, a PMU apparatus, a measurement and control apparatus, a protection device and a fault recording apparatus. The measurement and control apparatus is connected with a merging unit and an intelligent terminal. By adoption of the clock synchronization check method disclosed by the invention, the clock synchronization conditi