State Grid Corporation of China

Taizhou Power Supply Company of State Grid Zhejiang Electric Power

Rijun Wang

Zhen Huang

Jian Wu

Guode Ying

Tao Zhu

Yuande Zheng

Hua Xu

Kang Wang

Hao Tan

Ping Zhao

Zaibing Zhou

Hao Li

Qingchun Zhao

Xiaotong Zhu

Yiping Shen

Yutao Qiu

Ben Li

Xiaochun Xu

Provided are a differential protection method and system, applied to a multi-terminal T-connection transmission line. The method includes: selecting two slaves without a connection and connecting the two slaves to construct a slave group; determining a target slave and an auxiliary slave in the slave group, where a first communication path is connected along a channel one, a channel two and a channel three, and a second communication path is connected along the channel three, the channel two and the channel one; transmitting, by the target slave, two frames of messages, and acquiring a delay difference between a transceiving delay of the first communication path and a transceiving delay of the second communication path, where a first frame of messages is transmitted to the target slave via the first communication path, a second frame of messages is transmitted to the target slave via the second communication path.

Differential protection method and system

Growing community of inventors

Zhejiang, China

Rijun Wang