Results 131 to 140 of about 6,484 (263)

Study on Impurity Particle Detection in Transformer Oil Based on Microflow Imaging Method

High Voltage, EarlyView.
ABSTRACT The concentration of particles in transformer oil has a significant influence on its electrical performance, making oil cleanliness a critical parameter in the operation and maintenance of power transformers. However, the light obstruction (LO) method recommended by current standards has inherent limitations, including low sensitivity to ...
Chen Chen, Lijun Yang, Wu Zhao, Zhengyu Chen, Xinxi Yu, Yong Li, Ruijin Liao   +6 more
wiley   +1 more source

The Effects of K-BNNS Nanoparticles on PD Characteristics of Composite Aramid Paper. [PDF]

Nanomaterials (Basel)
Chen YH, Li XN, Zhang WX, Qin T, Cheng QK, Wu B.   +5 more
europepmc   +1 more source

Research on Ultra‐Wideband Pulse Current Method for DC Partial Discharge Measurement

High Voltage, EarlyView.
ABSTRACT The conventional pulse current method is commonly used in AC or DC withstand voltage tests with partial discharge (PD) monitoring. Because of its relatively narrow measurement bandwidth, this method tends to ignore critical information in PD waveforms, making it difficult to eliminate pulse‐type interference under DC voltage conditions, where ...
Kaining Hou, Zhaoyang Kang, Dongxin He, Hongshun Liu, Qingquan Li   +4 more
wiley   +1 more source

Composites from Recycled Polyolefin and Waste Plant Biomass with Potential Uses in Electrical Insulation Applications. [PDF]

Materials (Basel)
Aradoaei M, Ciobanu RC, Aradoaei ST, Eva RL, Caramitu AR, Bors AM.   +5 more
europepmc   +1 more source

Electrical Breakdown Analysis of Emerging Oil–Paper Insulation Systems

High Voltage, EarlyView.
ABSTRACT This investigation addresses the effect of particulate additives on the electrical breakdown strength of the oil impregnated insulation paper system. The morphological complexity is addressed by converting data from scanning electron microscope images to a data set suitable for numerical simulation analysis. Then, by using the conventional oil‐
Yue Xu, Soori Tejaswi, Kent Davey, Qian Zhang, Vaibhav Bahadur, Junyong Zhu, Robert Hebner, Zhedong Han, Felix Lin, Liangbing Hu   +9 more
wiley   +1 more source

Predicting and Controlling the Thermal Conductivity of Portland Cement for Underground Conditions. [PDF]

ACS Omega
Shen S, Bu Y, Lu C, Liu H, Guo S, Liu S.
europepmc   +1 more source

Mechanical Properties and Quantitative Analytical Modelling of Micro/Nanocellulose Co‐Modified Insulating Papers With Different Aspect Ratios

High Voltage, EarlyView.
ABSTRACT The incorporation of nanocellulose‐doped insulating paper into the material composition of a given structure has been demonstrated to enhance the material’s mechanical properties and retard the development of cracks. However, the effects of different length‐to‐diameter ratios of nanocellulose are different.
Siyu Wang, Daning Zhang, Wenrui Tian, Xinnan Zhai, Dingqian Yang, Guanjun Zhang   +5 more
wiley   +1 more source

Characterization of Novel Partially Bio-Based, Waste-Derived Composites for Thermal and Acoustic Performance in Buildings. [PDF]

Polymers (Basel)
Ali M, Almuzaiqer R, Alshehri H, Alanazi MA, Alanazi MA, Almudhhi T, Nuhait A.   +6 more
europepmc   +1 more source

Deterioration Law of Mechanical Properties of Insulation Pressboard Under Multifield Coupled Ageing

High Voltage, EarlyView.
ABSTRACT Converter transformers can experience progressive deterioration of their oil–pressboard insulation under elevated temperature, combined AC–DC electrical stress and persistent mechanical vibration. This study investigates how mechanical vibration affects the mechanical properties of insulation pressboard and clarifies the associated microscopic
Jiayi Chen, Guan Wang, Zihao Li, Zhongyu Zhao, Kuo Yan, Hongshun Liu   +5 more
wiley   +1 more source

Industrial and Therapeutic Applications of Hemp: A Review. [PDF]

Molecules
Chiririwa H.
europepmc   +1 more source