State Grid Corporation of China

State Grid Jiangsu Electric Power Company

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

Chinese Academy of Sciences

Jiangsu Electric Power Research Institute Co., Ltd.

Jianhua Qin

Hong Tao Liu

Jian Liu

Zhen Wang

Wei Su

Kun Yang

Jinggang Yang

Peng Li

Shu Chen

Yubo Yuan

Mingming Shi

Xiaodong Yuan

Qiang Huang

Lei Gao

Qun Li

Yongling Lu

Shuyi Zhuang

Tiankui Sun

Xin Fang

Fengbo Tao

Xiaolong Xiao

Chengbo Hu

Jun Jia

Ruihuang Liu

Xueqiong Zhu

Guojiang Zhang

Yunlong Jiang

Ziquan Liu

Xinyao Si

Chao Yun

Lingling Xu

Chenqing Wang

Min Zheng

Jiahao Guo

Chong Tan

A micro-power wireless access method and apparatus for the Internet of things for power transmission and transformation equipment involves a time synchronization process, a traffic channel access process, a control channel configuration information access process, and a control channel burst information access process. In the time synchronization process, an aggregation node determines a delay parameter and other parameters based on a timeslot in which traffic information randomly transmitted by a sensing terminal is located, and the sensing terminal adjusts transmission time of a corresponding frame based on the parameters. The traffic channel access process adopts a mode in which one-way reporting is mainly used, to minimize working time of a sensor. The present disclosure realizes limited two-way communication on a control channel, supports configuration of a sensor cycle, a threshold, and other parameters, and supports a retransmission mechanism on the control channel for important alarm information.

Micro-power wireless access method and apparatus for internet of things for power transmission and transformation equipment

Disclosed is a low-voltage DC power distribution fast switching device. The device includes a positive output terminal electrically connected to a positive pole of a load, and no less than two switching circuits connected in parallel with each other; the switching circuit includes a positive input terminal electrically connected to a positive pole of common negative power supplies, a supplementary diode cluster composed of no less than one diode connected in series, and a thyristor connected between the positive input terminal and the positive output terminal; the positive input terminal is electrically connected to an anode of the supplementary diode cluster and an anode of the thyristor, and the positive output terminal is electrically connected to a cathode of the complementary diode cluster and a cathode of the thyristor.

Low-voltage DC power distribution fast switching device

Growing community of inventors

Jiangsu, China

Jianhua Qin