China University of Mining and Technology

State Grid Jiangsu Electric Power Company

State Grid Jiangsu Electric Power Co., Ltd. Research Institute

Nanjing Dnn Technology Co., Ltd

Jiangsu Electric Power Research Institute Corporation Limited

Chao Wei

Wei Li

Yang Liu

Tao Zhang

Shu Chen

Jiansheng Li

Liyuan Yu

Rui Sun

Fengbo Tao

Ruibin Li

Yiming Wu

Xianzhen Mi

Hairong Wei

Haijian Su

Jieqing Deng

Bowen Hu

Shuchen Li

Xiaoping Yang

Peng Wu

Xu Wei

Tianxi Xie

Shengquan Wang

Yuncai Lu

Caibo Liao

The disclosure belongs to the field of underground energy storage, and particularly provides a large-deformation underground energy storage device, including a body. The body includes a rubber sealing layer, a negative Poisson's ratio material layer, a large deformation concrete layer and rock layers sequentially nested from inside to outside; an internal storage space is formed in the rubber sealing layer, the negative Poisson's ratio material layer includes a plurality of negative Poisson's ratio material elements connected in sequence, and the large deformation concrete layer is cast from deformable concrete.

Large deformation underground energy storage device

The present invention discloses a device for evaluating and demagnetizing residual magnetism quantity of a power transformer. A main circuit comprises a switching power supply the two ends of which are respectively connected with a filter capacitor and a resistor in parallel. A forward end of the switching power supply is connected with a main switch in series. A rear end of the main switch is connected with a series branch of a sixth switch and a first resistor, a series branch of a first switch and a second switch, and a series branch of a third switch and a fourth switch are connected in parallel. A driving circuit is respectively connected with driving ends of the main switch, the sixth, first, second, third and fourth switches. A control circuit is connected with the driving circuit for sending an instruction to the driving circuit.

Device for evaluating and demagnetizing residual magnetism quantity of power transformer and control method thereof

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Jiangsu, China

Chao Wei