Wuxi Power Supply Branch of State Grid Jiangsu Electric Power Co., Ltd.

Jun Qin

Junfeng Wu

Xi Wu

Ping Chen

Jin Miao

Bin Fei

Yin Gu

Zhaoyun Leng

Ming Ren

A method for determining phase locking of critical arc light includes: step: monitoring and collecting light radiation intensity of an arc inside a switch cabinet in real time, and converting the collected light radiation intensity into an electrical signal; step: extracting a power-frequency fundamental wave of the electrical signal, comparing an amplitude of the power-frequency fundamental wave of the electrical signal with a first threshold, and generating a pre-warning signal based on a comparison result of the first threshold; step: comparing the amplitude of the power-frequency fundamental wave of the electrical signal with a second threshold voltage, and generating a control signal based on a comparison result of the second threshold voltage and a protection time threshold; and step: protecting the switch cabinet under the critical arc light environment based on the pre-warning signal and the control signal.

Method and apparatus for determining phase locking of critical arc light

Growing community of inventors

Jiangsu, China

Jun Qin