Fault diagnosis of the bushing infrared images based on mask R‐CNN and improved PCNN joint algorithm

J Jiang, Y Bie, J Li, X Yang, G Ma, Y Lu… - High voltage, 2021 - Wiley Online Library
Bushings are served as an important component of the power transformers; it's of great
significance to keep the bushings in good insulation condition. The infrared images of the …

Electrical degradation dynamics of glass fiber-reinforced epoxy composites considering different fiber orientation

J Li, R Zhao, Y Wang, Y Chen, X Kong, B Du - Composite Structures, 2023 - Elsevier
Glass fiber-reinforced epoxy composites (GFREC) have been widely used in the mechanical
components of electrical and electronic devices because of its lightweight, high mechanical …

Degradation mechanism for epoxy resins under combined electric, thermal and compressive stresses

G Shang, Y Sun, H Tang, X Li, S Zhang, J Li… - Polymer Degradation and …, 2024 - Elsevier
Epoxy resins are widely used in equipment such as ultra-high voltage dry-type bushings,
which are subjected to severe electric, thermal, and compressive stresses. Some physical …

Numerical simulation of the interfacial stress between epoxy resin and metal conductor of power equipment during epoxy curing

C Wang, G Zhou, Q Sun, C Chen, Z Zhang, H Li… - High …, 2022 - Wiley Online Library
There are many metal and epoxy resin interfacial structures in power equipments, which can
generate interfacial stress concentrations and may induce accidents due to epoxy curing. In …

Degradation characteristics of insulation near aluminium foil edges inside dry‐type bushing cores under electrothermal compound stress

M Chen, X Liu, Y Shao, G Shang, Q Zhang… - High …, 2022 - Wiley Online Library
Insulation breakdown of dry‐type valve‐side bushing cores under electrothermal compound
stress has become a key factor limiting the safe and stable operation of the converter …

Propagation and localisation of partial discharge in transformer bushing based on ultra‐high frequency technique

J Jiang, J Chen, J Li, X Yang… - High …, 2021 - Wiley Online Library
As an essential component of power transformers, the detection and diagnosis of incipient
partial discharge (PD) activities of bushings are of great significance. A 35‐kV oil …

Solidification dynamics of silicone oil and electric field distribution within outdoor cable terminations subjected to cold environments

J Li, S Liu, P Song, B Du - IEEE Transactions on Power …, 2022 - ieeexplore.ieee.org
Outdoor oil-filled cable terminations play an important role in power transmission and
distribution networks, but their frequent explosions and disintegration accidents in cold …

Analysis of multi‐objective optimisation method for main insulation structure configuration scheme of valve‐side winding of ultra‐high voltage converter transformer …

L Yang, Z Cheng, L Cheng, R Liao - High Voltage, 2024 - Wiley Online Library
Because DC conductivities of oil‐paper materials can be easily affected by electric field and
temperature, the electrical properties under electro‐thermal coupling of oil‐paper materials …

3‐D thermal analysis for the valve‐side bushings of HVDC converter transformer and application in the evaluation of current‐carrying connections defects

M Lin, K Liu, Z Wu, H Tang, T Liu… - IET Generation …, 2022 - Wiley Online Library
To analyze the overheating problem of the valve‐side bushings of high voltage direct current
(HVDC) converter transformer, which is mainly caused by current‐carrying connections …

Study on the generation of carbon particles in oil and its effect on the breakdown characteristics of oil‐paper insulation

Z Zhang, X Pan, Z Dong, J Zhong… - IEEJ Transactions on …, 2023 - Wiley Online Library
The partial discharge in the converter transformer will cause the carbonization of the
insulating paper. The high concentration of free carbon particles generated from the …