Power grid switching device suitable for multi-machine parallel operation

• Main Authors: FENG HONGFENG, YUAN QIYU
• Format: Patent
• Language: Chinese; English
• Published: 05.01.2024
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The utility model provides a power grid switching device suitable for multi-machine parallel operation. The power grid switching device comprises a power converter, a relay, an inductance module, a storage battery system, a photovoltaic array and a load. The power converter is connected with the storage battery system and the photovoltaic array, the inductance module is connected between the power converter and the relay, and the other end of the relay is connected with the load. According to the utility model, through bidirectional flow of electric energy between the storage battery and the power grid, recycling of redundant electric energy of the power grid can be realized, meanwhile, all distributed power supplies can be connected into the power grid, multi-power-supply combined operation power supply is realized, smooth switching of grid-connected and off-grid modes is realized through on-off switching of the relay, and the power supply efficiency is improved. Therefore, maximum application of electric en