State Grid Shanxi Electric Power Research Institute

Taiyuan University of Technology

Hong Liu

Guangqi Mu

Hua Yu

Zhumao Lu

Guodong Li

Tao Wang

Yaxing Liu

Shengzhi Chang

Haipeng Wang

Zhihui Xu

Lixin Wu

Wei Wang

Yanjie Zhang

Zhiqi Xu

Jinsong Li

Aimin Wang

Maosen Yin

Hai Zhang

Qingsong Chen

Lu Bai

Shan Lu

Jichong Liang

Hui Yuan

Yansong Li

Shuai Li

Shuai Wang

Jin Zhao

Yanchun Li

Xinwei Wang

Min Jiang

Xuan Wang

Tao Jin

Like Dong

Disclosed are a defect monitoring apparatus and detection method for a transformer oil conservator based on edge computing. The monitoring apparatus includes: a sensing terminal, an edge intelligent gateway, a monitoring terminal, an oil conservator defect monitoring cloud platform, and a client terminal. The edge intelligent gateway and the monitoring terminal are both disposed in a substation. The monitoring terminal is configured to access the edge intelligent gateway. The sensing terminal includes: an airflow sensor, an oil temperature sensor, an ambient temperature sensor, and a microwave oil level measurement assembly. The sensing terminal sends detection data information to the edge intelligent gateway, and the edge intelligent gateway stores and determines a category of the detection data information. The present disclosure can recognize capsule damage, partial blockage of a breathing circuit, leakage in the breathing circuit, moisture impurities in a breathing tube, and false oil level.

Defect monitoring apparatus and detection method for transformer oil conservator based on edge computing

A subsurface defect detecting device for cylindrical components and method thereof are provided. The subsurface defect detecting device for cylindrical components includes: an electric rotating platform, a three-jaw chuck, a first linear supporting base, and a second linear supporting base. The three-jaw chuck is mounted on the electric rotating platform, and the three-jaw chuck is configured to fix a workpiece to be detected. The first linear supporting base and the second linear supporting base are arranged close to the electric rotating platform, and the first linear supporting base and the second linear supporting base are in contact with each other and are perpendicular to each other. The present disclosure achieves optimal laser ultrasound detection angles by incorporating a moving device, determining the appropriate laser ultrasound detection angle for cylindrical components with different curvature radii, thereby reducing the impact of uneven surfaces on the detection results.

Subsurface defect detecting device for cylindrical components and method thereof

A device and method for evaluating long-term operation of a transformer oil pump. An inlet of an oil pump is connected to an outlet of an oil tank through an oil pipe, and an outlet of the oil pump is connected to an inlet of the oil tank through an oil pipe. A pressure gauge is provided on the oil pipe to the inlet and the outlet of the oil pump, respectively. An ultra-high-frequency (UHF) sensor is provided on an inner wall of an oil pipe close to the oil pump. A pressure difference between the oil pipes to the inlet and to the outlet of the oil pump is monitored. A three-phase unbalanced current of a stator winding is monitored. The vibration of the oil pump is monitored. The rotor-to-stator rub is monitored. Based on the above inspection, a long-term health status of the oil pump is determined.

Method and device for evaluating long-term operation of transformer oil pump

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Shanxi, China

Hong Liu