Results 31 to 40 of about 31,506 (294)

Providing decision support for the condition-based maintenance of circuit breakers through data mining of trip coil current signatures [PDF]

, 2007
The focus of this paper centers on the condition assessment of 11kV-33kV distribution circuit breakers from the analysis of their trip coil current signatures captured using an innovative condition monitoring technology developed by others.
Campbell, A., McArthur, S.D.J., McDonald, J.R., Stephen, B., Strachan, S.M.   +4 more
core   +1 more source

Research of Partial Discharge Monitoring for Switchgear Cabinet Based on LSSVM

MATEC Web of Conferences, 2016
Now, there are many influencing factors of partial discharge(PD) for switchgear cabinet, but very few methods used for switchgear cabinet monitoring. In this paper, Partial discharge of switchgear cabinet is identified based on Least Square SVM (LSSVM ...
Han Shai Gen, Guan Shi Lei, Wu Yan, Bo Zhi Xin, Ding Yan, Chen Li An   +5 more
doaj   +1 more source

Temperature Field Simulation and Structure Improvement of 12kV Switchgear

Journal of Physics: Conference Series, 2022
Aiming at the heating problem of 12kV switchgear, the model of its main circuit module was established and simplified. Then, the temperature field and airflow field were simulated by finite element analysis software ANSYS.
Yanjie Zhao, Li’an Chen, Rui Qiao
semanticscholar   +1 more source

Precise multi‐dimensional temperature‐rise characterisation of switchgear based on multi‐conditional experiments and LPTN model for high‐capacity application

High Voltage, 2021
As the power load increases, the capacity of switchgear becomes larger so the problem of overheating of switchgears becomes more significant. Whether the switchgears operate safely and reliably affects the reliability and economy of the entire power ...
Xiaorui Wang, Haotian Xia, Zhanqing Yu, Yonggang Guan, Biao Zhao, Yulong Huang, Lu Qu, Jiudong Ding   +7 more
doaj   +1 more source

Comprehensive Structural Reliability Assessment When Choosing Switchgear Circuits for 35–220 kV Step-Up Substations [PDF]

Energies
The basic requirements for the design of a switchgear for main 35–220 kV step-down substations are reliability and efficiency. Switchgear circuits are chosen depending on the number of supply and transit lines and transformers, the substation’s place in ...
A.V. Varganova, Aleksandr S. Irikhov, Anastasia A. Utesheva, Vadim R. Khramshin, Alexander S. Maklakov, Andrey A. Radionov   +5 more
openalex   +3 more sources

Research and Application of Temperature Load of Switchgear

Journal of Physics: Conference Series, 2022
Abnormal changes in the temperature and load current of the high-current switchgear will directly affect the reliable operation of the equipment. In order to effectively monitor the temperature of the switchgear and ensure the reasonable arrangement of ...
Ruibo Yang, Tong Li, Jiehua Chen, Jingfeng Lin, Lei Mao, Mu Wang   +5 more
semanticscholar   +1 more source

Simulation environment design for the investigation of damping and dewing mechanisms in the 12kV high-voltage switchgear

E3S Web of Conferences, 2018
The phenomenon of dampness and dewing inside the switchgear can improve the occurrence of serious equipment faults. Based on it, this paper, starting from the occurrence mechanism of dampness and dewing of the switchgear, summarizes the main techniques ...
Pan Qize, Yang Fang, Tang Xiaoliang, Yang Zhi, Liu Shulin   +4 more
doaj   +1 more source

Improving the Estimation of Partial Discharge Direction Using a Four-Terminal Surface Current Sensor

Energies, 2023
To improve the insulation diagnosis of a medium-voltage (MV) switchgear, we have developed a four-terminal surface current sensor and a method to estimate the direction of partial discharge occurrence.
Yasutomo Otake, Hiroshi Murase
doaj   +1 more source

Study on the Effect of Helium on the Dielectric Strength of Medium-Voltage Vacuum Interrupters

Energies, 2021
This paper presents the results of a comparative analysis of the dielectric strength of disconnecting vacuum interrupters operating on air and helium. The breakdown voltage Ud was measured in the pressure range from 8.0 × 10−4 Pa to 3.0 × 101 Pa for air ...
Paweł Węgierek, Michał Lech, Damian Kostyła, Czesław Kozak   +3 more
doaj   +1 more source

Study on voltage characteristics of short air arc with high current density arc root

AIP Advances, 2019
In this paper, the voltage characteristics of short air arc with high average current density arc root were studied at atmospheric pressure. Cu-W electrodes with diameter of 5-14mm and gap length of 0.2-3 mm were used in the experimental study.
Tiansheng Zhu, Hongwu Liu, Ruiliang Guan, Shenli Jia, Nairui Yin   +4 more
doaj   +1 more source