Power transmission line abnormal state monitoring analysis method and system based on optical sensing and traveling wave technology

• Main Authors: DENG MINGGAO, WAN WANGLONG, LIU YU
• Format: Patent
• Language: Chinese; English
• Published: 05.07.2024
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; CALCULATING; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; COMPUTING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; ELECTRICITY; GENERATION; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; PHYSICS; SYSTEMS FOR STORING ELECTRIC ENERGY; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR; TARIFF METERING APPARATUS; TESTING

The invention discloses a power transmission line abnormal state monitoring analysis method and system based on an optical sensing and traveling wave technology, and the method comprises the steps: obtaining an abnormal optical signal of an OPGW optical cable of a to-be-monitored transformer substation and an abnormal traveling wave signal of a bus and a line of the transformer substation, and carrying out the processing to obtain abnormal signal data, further extracting a vibration time-frequency characteristic factor, an icing characteristic factor and a wind speed characteristic factor of the distributed geological disaster of the OPGW optical cable, and a power transmission line abnormal state traveling wave characteristic factor; constructing an OPGW optical cable and power transmission line equivalent model, calculating geological disaster positions, icing thicknesses and wind disaster levels among towers at all levels of the power transmission line, and accurately positioning fault points of the power