Converter dynamic control method and device for reducing loss of rail transit power supply system

• Main Authors: HE BIN, WANG PEIPEI, ZHANG HUAZHI, HE JUNWEN, WANG KAIKANG, GONG MENGRONG, ZHANG HAISHEN, ZHAN BO, XU LONG, DENG XIAOXUN
• Format: Patent
• Language: Chinese; English
• Published: 14.05.2024
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CALCULATING; COMPUTING; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; ELECTRICITY; GENERATION; PHYSICS; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR

The invention provides a converter dynamic control method and device for reducing the loss of a rail transit power supply system, and the method comprises the steps: obtaining an initial starting voltage threshold value corresponding to an adjustment period and the initial average power of a main substation according to the adjustment period of a target time period; the initial starting voltage threshold value is periodically adjusted based on the adjustment period and a preset adjustment interval by taking the average power in the adjustment period after the voltage adjustment as a target and taking the upper limit and the lower limit of a preset starting voltage threshold value as constraints; and recording the minimum average power and the target starting voltage threshold value corresponding to the minimum average power in the voltage adjustment process so as to update the initial average power and the initial starting voltage threshold value. According to the method, the starting voltage threshold value