H-bridge cascaded SVG power unit bypass control system

• Main Authors: WANG JIHAO, XI PENG, SON HYUN-DAE, GAO JINXIN, WANG FEIYI, YANG YANG, YANG YONGFEI, WEI HONGSHI
• Format: Patent
• Language: Chinese; English
• Published: 30.12.2022
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; SYSTEMS FOR STORING ELECTRIC ENERGY; TESTING

An H-bridge cascaded SVG power unit bypass control system comprises a main control cabinet, a phase control cabinet and power units, an H-bridge power unit series topological structure is adopted, an AC output side of each H-bridge power unit is connected in parallel with a bypass contactor, and the H-bridge power unit series topological structure is realized through a double-fiber communication mode. And meanwhile, the main control cabinet and the phase control cabinet are combined, so that real-time inquiry and positioning of faults are realized. The H-bridge cascaded SVG power unit bypass control system is small in overall size, low in cost and high in reliability, meanwhile, the maintenance time of operators is shortened, and non-stop maintenance is achieved. 一种H桥级联型SVG功率单元旁路控制系统，包括主控柜、相控柜以及功率单元，采用H桥功率单元串联拓扑结构，在每个H桥功率单元的交流输出侧并联一个旁路接触器，并通过双光纤通讯的方式，实现H桥功率单元串联拓扑结构，降低了整体系统的故障率，同时采用主控柜和相控柜相结合，实现故障的实时查询与定位。一种H桥级联型SVG功率单元旁路控制系统，整体体积小、成本低，且可靠性高，同时缩短了操作人员的检修时间，并实现不停机维修。