State Grid Corporation of China

State Grid Zhejiang Electric Power Co., Ltd. Taizhou Power Supply Company

Mingxu Chen

Zhen Huang

Chi Zhang

Guode Ying

Dongbo Zhang

Yuande Zheng

Daojian Hong

Minzhi Chen

Wenqi He

Xiaoping Fu

Provided is an anti-islanding protection system. The system is applied to a low-voltage distributed generation resource (DGR) and includes a box, a reverse power protector, a protection module and an output controller. The reverse power protector has an end connected to a first current transformer and has another end connected to the output controller. The reverse power protector is configured to provide reverse power protection for the low-voltage DGR. The output controller has an end connected to the protection module and the reverse power protector and has another end connected to a grid-connection switch of the low-voltage DGR. The output controller is configured to control the grid-connection switch to turn off when reserve power is detected. The protection module has an end connected to a second current transformer and has another end connected to the output controller. The protection module is configured to provide low-frequency protection, over-frequency protection, over-voltage protection and low-voltage protection for the low-voltage DGR.

Anti-islanding protection system

Growing community of inventors

Zhejiang, China

Mingxu Chen