Results 151 to 160 of about 841,302 (182)

Polarity Reversal and Over Voltage Affecting Discharge Inception of Tri-Post Insulator in ±800 kV GIL

IEEE transactions on dielectrics and electrical insulation, 2022
Surface charge and electric field distributions of a tri-post insulator in ±800-kV gas-insulated transmission line (GIL) are calculated under the superimposed dc-impulse voltage and the polarity reversal voltage.
B. Du, Jianan Dong, Hucheng Liang, X. Kong   +3 more
semanticscholar   +1 more source

Altitude Correction Method for Audible Noise of ± 800 kV UHVdc Overhead Transmission Line and its Engineering Application

IEEE Transactions on Power Delivery, 2023
With the improvement of the voltage level of DC overhead transmission lines (OHTLs), the audible noise (AN) caused by the corona discharge of conductors is an increasingly serious problem.
Luxing Zhao, Li Xie, Dafei Wang, Kun He, Lei Gao, Y. Ju, Jiayu Lu   +6 more
semanticscholar   +1 more source

Gas Convection Affecting Surface Charge and Electric Field Distribution around Tri-post Insulators in ±800 kV GIL

IEEE transactions on dielectrics and electrical insulation, 2021
A multi-physics simulation model of the tri-post insulator in ±800 kV GIL laid horizontally is established to study the effects of gas convection on surface charges and electric field distribution.
B. Du, J. N. Dong, Jin Li, H. C. Liang, X. Kong   +4 more
semanticscholar   +1 more source

Simulation Research on Electric Field Safety of Digital Twin Positioning Device for Live Operators of ±800 kV UHVDC Transmission

2022 7th Asia Conference on Power and Electrical Engineering (ACPEE), 2022
With the development of digital twin technology, in the traditional live operation mode of ±800 kV UHVDC transmission lines, the safety protection of live operators has a new form. In this paper, based on the wireless positioning device in live operation
W. Si, Haibo Li
semanticscholar   +1 more source

Surface Charge and Electric Field Distribution along Tri-post Insulators in ±800 kV GIL

International Conference on Electrical Materials and Power Equipment, 2021
A multi-physics simulation model of the tri-post insulator in ± 800kV GIL laid horizontally is established. Based on the model, the temperature and gas flow distribution inside the GIL are obtained.
J. N. Dong, B. Du, J. Li, H. C. Liang, H. Yao, Y. Chen   +5 more
semanticscholar   +1 more source

Analysis and Research on Transmission Capacity of ±800 kV Yan-Huai UHVDC

2020 IEEE 4th Information Technology, Networking, Electronic and Automation Control Conference (ITNEC), 2020
With the large-scale production of thermal power generating units and new energy generating units, Shanxi power grid has higher and higher requirements on the power external transmission capacity.
Ying Zhang, Chao Zhang, Xueting Cheng, Jie Hao, Y. Qu, Wei Wang   +5 more
semanticscholar   +1 more source

Seismic performance improvement of ±800 kV UHV DC wall busing using friction ring spring dampers

, 2020
Wall bushings that connect converter valves within hall buildings and other electric facilities in a direct current (DC) field are indispensable in substations but vulnerable to earthquakes.
Q. Xie, Huangbin Liang, Xiao-yang Wang
semanticscholar   +1 more source

Optimal Reliability Allocation of ±800 kV Ultra HVDC Transmission Systems

IEEE Transactions on Power Delivery, 2018
In this paper, an optimal reliability allocation (ORA) model of ±800 kV ultra-high voltage direct current (HVDC) transmission system is proposed. The model intends to provide the means to determine the availability requirements of components in the ...
Bo Hu, K. Xie, H. Tai
semanticscholar   +1 more source

Statistical Analysis of Long-Term Measured Electric Field of the Operating ±800 kV HVDC Bipolar Transmission Lines

IEEE Transactions on Power Delivery
Presently, there is a lack of understanding regarding the distribution of the DC electric field of actual operating bipolar ±800 kV lines and its statistical correlation with meteorological factors.
H. Xie, Jiangong Zhang, Weifang Yao, Yemao Zhang, Jilai Xu, Zheyuan Gan   +5 more
semanticscholar   +1 more source