Method for calculating interrupting power frequency follow current capability of multi-cavity arc extinguishing device

• Main Authors: CHEN YONGMEI, PU SHIZUN, ZHANG HUI, FAN QINGQIAN, LI HONGMEI, HUANG YUNFEI, PENG QINGJUN, CHEN CHAOYI, LIU PINGLIN
• Format: Patent
• Language: Chinese; English
• Published: 23.11.2021
• Subjects: CALCULATING; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR

According to the method for calculating the power frequency follow current interrupting capacity of the multi-cavity arc extinguishing device, an arc model is used for representing a plurality of short arcs based on the arc chain type idea, the number of cavities is changed by changing the dissipated power value, and the arc model is built in ATP-EMTP. Modeling of the multi-cavity arc-extinguishing device is achieved by combining an insulation flashover model, the multi-cavity arc-extinguishing device is applied to a lightning stroke model of the power transmission line, a lightning stroke model of the power transmission line of the multi-cavity arc-extinguishing device is obtained, and the power frequency follow current interruption capacity of the multi-cavity arc-extinguishing device under different cavity numbers is calculated in a simulating mode. Compared with a multi-chamber arc extinguishing device, an arc model is realized by connecting arc models of single chambers in series, and due to the fact tha