Nanjing University of Aeronautics and Astronautics

China Construction Industrial & Energy Engineering Group Co., Ltd.

China Construction Equipment & Engineering Co., Ltd.

Jun Jiang

Chaohai Zhang

Wei Li

Kai Wang

Jie Liu

Xiaorong Chen

Yiping Huang

Haoji Deng

Lei Fan

Yumao Lin

Jingting Sun

Yifan Bie

Changsha Liu

Huali Wei

Feng Liang

Zhibang Shen

Shibin Lv

Judong Chen

Xiangchao Wang

Bendong Zhang

Fanming Shang

A partial discharge detecting method using ultraviolet imagery under pulse voltage condition is discussed. The method samples video data at a partial discharge area of a target electric system by an ultraviolet imager, obtains an ultraviolet image by extracting video frames from the video data, obtains a discharge intensity data P based on a sum number of pixels with a brightness value higher than a brightness threshold in the ultraviolet image; and obtains a quantization result Q of the partial discharge of the target electric system based on the discharge intensity data P and discharge characteristic parameters.

Partial discharge detecting method using ultraviolet imagery under pulse voltage condition

In a system for intelligent monitoring strain and temperature of a bullet tank, distributed strain fiber optic cables and distributed temperature fiber optic cables are laid on a surface of a bullet tank body, and pressure gauges are arranged in a soil layer below the bullet tank body, so that the surface and surrounding states of the bullet tank body are monitored. Detected data is gathered by collectors and then transmitted to a field control system. The field control system respectively performs data communication with a numerical simulation system and a central control display screen. The numerical simulation system uses finite element software to simulate the bullet tank body and the soil layer below, determines a corresponding temperature and stress change range, and transmits the temperature and stress change range to the field control system for comparison with the detected data.

System and method for intelligent monitoring strain and temperature of bullet tank based on distributed optical fibers

The present disclosure relates to an optical fiber detection device for detecting a discharge fault of a high-voltage bushing, which includes an optical fiber sensing unit, an optical fiber delay unit, a photoelectric conversion unit, and a signal collecting and processing unit. The optical fiber sensing unit includes sensing optical fibers; the optical fiber delay unit includes delay optical fibers, a light source, and couplers; the photoelectric conversion unit includes a photodetector; the signal collecting and processing unit includes a high-pass filter. The delay optical fibers are connected to the couplers; an output end of the light source is connected to the light-splitting coupler; an input end of the photodetector is connected to the light-splitting coupler, and an output end of the photodetector is connected to the signal collecting and processing unit; and the light-combining coupler is connected to the sensing optical fibers.

Optical fiber detection device for detecting discharge fault of high-voltage bushing

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Nanjing, China

Jun Jiang