Transformer substation intelligent diagnosis method based on secondary system state estimation

• Main Authors: CHEN JIONGCONG, XI YU, PAN TIANLIANG, CAI ZEXIANG
• Format: Patent
• Language: Chinese; English
• Published: 29.06.2016
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses a transformer substation intelligent diagnosis method based on secondary system state estimation and a transformer substation intelligent diagnosis system based on secondary system state estimation. The method comprises steps of integrating multiprotocol heterogeneous data sources of dispersion professional systems of the current transformer substation; carrying out redundancy association on data information of all professional systems; establishing electric power secondary system state estimation representing connection relations of secondary system devices of a transformer substation, physical constraints of state quantity, association of primary and secondary faults and cooperation between timing sequence and logic; and based on the secondary system state estimation, establishing an electric power secondary intelligent diagnosis system framework and judging logic. In this way, effective monitoring and analysis are carried out on information contents of secondary systems, so a highly