State Grid Jiangsu Electric Power Company

Southeast University

State Grid Corporation of China

State Grid Jiangsu Electric Power Company Research Institute

State Grid Jiangsu Electric Power Co., Ltd. Marketing Center

Jiangsu Electric Power Research Institute Co., Ltd.

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

Qifeng Huang

Zhixin Li

Shihai Yang

Xiao Chen

Gang Chen

Qiang Zhou

Feng Wang

Bin Yang

Jijun Yin

Shuangshuang Zhao

Minrui Xu

Qingshan Xu

Lingying Huang

Wenguang Chen

Mingfeng Xue

Haowei Zhang

Shufeng Lu

Zhenyu Chen

Jian Liu

Haifeng Li

Xiao Lu

Jinggang Yang

Lin Liu

Yubo Yuan

Shu Chen

Bo Li

Mingming Chen

Mingming Shi

Lei Gao

Xiaodong Yuan

Xiaodong Cao

Yaohong Li

Qing Xu

Guofang Xia

Tiankui Sun

Xiaolong Xiao

Shuyi Zhuang

Yefeng Jiang

Liguo Liu

Siyun Wang

Yongxian Yi

Zhongdong Wang

Zuofeng Li

Kaijie Fang

Yixuan Huang

Tianchang Liu

Hanmiao Cheng

Yuqin Chen

Huiling Su

Xiaoquan Lu

Feng Ye

Disclosed is an electrical topology of an integrated DC charging station and an operation control method. The electrical topology comprises a supply side DC bus, K discrete charging pile units and a mutual aid total DC bus; each charging pile unit comprises an input DC bus, a mutual aid sub-DC bus, an output DC bus, N isolation branches, a non-isolation DC/DC module and an output terminal, the input DC bus is connected to the supply side DC bus, and the mutual aid sub-DC bus of each charging pile unit is connected to the mutual aid total DC bus; the isolation branch comprises an output branch and a mutual aid branch; and when all the output branches of one charging pile unit are started and the output power cannot meet the required power, the mutual aid branches of other charging pile units are started to meet the required power.

Electrical topology of integrated dc charging station and operation control method thereof

Provided are a heat shield and a Josephson junction array chip system, the heat shield includes a cryostat, a sensor group, a radiation shield plate, a clamp assembly, and a vacuum shield cover assembly; the cryostat includes a cold head, a first-stage chassis, and a second-stage chassis; the vacuum shield cover assembly includes a first vacuum shield cover, a second vacuum shield cover, and a heat shield aluminum oxide layer; and the cold head is located in the first vacuum shield cover; and the heat shield aluminum oxide layer is coated on a surface of at least one of the first vacuum shield cover or the second vacuum shield cover; the clamp assembly on the radiation shield plate is configured to fix the Josephson junction array chip; and the sensor group adjacent to the Josephson junction array chip is arranged on the radiation shield plate.

Heat shield and Josephson junction array chip system

Provided is a live measurement method for three-winding transformer loss based on windowed frequency shift. The method includes: stepproviding an improved live calculation equation of a three-winding transformer loss; stepprocessing a collected x(t) signal by windowed frequency shift calculation; stepsolving an amplitude and a phase of the collected x(t) signal via discrete Fourier transform of a frequency shift signal; and stepcalculating a no-load loss and a load loss of a three-winding transformer.

Live measurement method for three-winding transformer loss based on windowed frequency shift

Provided is a user side load response method based on adjustment and control on temperature of load clusters. The user side load response method includes: performing thermodynamic modeling on a temperature control load to obtain a temperature control model in direct load control; constructing a mapping quantity to describe the change state of a temperature control load relay switch; obtaining adjustable capacity of the temperature control load through the mapping quantity; introducing temperature control load clusters to solve the problem that control precision cannot satisfy condition requirements; and finally calculating the influence of each load cluster in different load cluster control schemes on comfort degree.

User side load response method based on adjustment and control on temperature of load clusters

Provided is a power grid adjustment method based on a load of a variable frequency air conditioner. The method includes: establishing a mathematical simulation model of a virtual synchronous motor in a variable frequency air conditioner controller; establishing a virtual inertia control segment and a droop control segment of power grid adjustment according to the mathematical simulation model; obtaining a reference value &#x394;&#x3c9; of rotation speed variation of a compressor by the virtual inertia control segment; obtaining a reference value &#x3c9;of rotational angular frequency of the compressor by the droop control segment; and inputting a sum of the reference value &#x3c9;of rotational angular frequency of the compressor and the reference value &#x394;&#x3c9; of rotation speed variation of the compressor into a field-oriented controller (FOC) to control rotation of a motor.

Power grid adjustment method based on loads of variable frequency air conditioner

Growing community of inventors

Jiangsu, China

Qifeng Huang