Dielectric Performance of Improved Gas Insulated Bushing for UHV Gis

Hosokawa, Masao; Okumura, Kohshi; Yamagiwa, T.; Ishikawal, Toshio; Ozawa, J.

doi:10.1109/tpwrd.1987.4308116

Cited by 27 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Considering the steep temperature gradient, different insulation gases were injected into two sections of the 154 kV bushing. [15][16][17] The upper part of the bushing, which is the furthest away from the liquid nitrogen, was filled with SF 6 gas at pressures of up to 0.3 MPa, which was originally used for the commercial SF 6 gas bushing. Next, the middle part was filled with an insulation CF 4 gas at a pressure of up to 0.3 MPa, and the middle part of cryogenic bushing was made with GFRP.…”

Section: Manufacturing and Testing Of Prototype 154 Kv Cryogenic Bushingmentioning

confidence: 99%

Design of 154 kV Extra-High-Voltage Prototype SF₆ Bushing for Superconducting Electric Power Applications

Koo

Seong

Hwang

et al. 2012

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

Electron paramagnetic resonance spectroscopy of Mn-doped Bi4Ge3O,' single crystals has been studied at room temperature in the X band. The spectra obtained have been attributed to Mn'+ ions in the Bi3+ site without local charge compensation having trigonal symmetry. Moreover, the spin-Hamiltonian parameters have been inierpreted by means of the superposition model in order to obtain information about the relaxation of the lattice in the neighbourhood of the impurity.

show abstract

Section: Manufacturing and Testing Of Prototype 154 Kv Cryogenic Bushingmentioning

confidence: 99%

Design of 154 kV Extra-High-Voltage Prototype SF₆ Bushing for Superconducting Electric Power Applications

Koo

Seong

Hwang

et al. 2012

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…In fact, these optimization objectives normally cannot be achieved at the same time, so a relatively reasonable balance among these optimization objectives is imperative. In summary, the optimization of the design of the insulation system of gas‐insulated bushings for 1100‐kV GIS is a multivariable and multiobjective optimization problem [3,4].…”

Section: Introductionmentioning

confidence: 99%

Optimization on the internal insulation system of gas‐insulated bushing for 1100‐kV GIS based on multiobjective optimization method

Liu¹,

Hongling²,

Zhang³

et al. 2013

IEEJ Transactions Elec Engng

View full text Add to dashboard Cite

In this paper, we first study the voltage and electric field distribution characteristics under the basic lightning impulse level (BIL) of 2400 kV by finite element method (FEM) calculation which are affected by the internal shielding structure of the gas‐insulated bushing for the 1100‐kV gas‐insulated substation (GIS). On this basis, four parameters of the shielding structure are determined to be the decision variables in the optimization process. Four electric field objective functions and four potential objective functions are also proposed. Using a multiobjective optimization method, we then construct an evaluation function with the eight objective functions mentioned above, which are used to evaluate the electric field and potential distribution synthetically. Furthermore, a combination of FEM and the evolution strategy is used to construct the stochastic optimization objective function with the multiobjective evaluation function. The electric field and potential distribution of the gas‐insulated bushing are greatly improved after optimization, and the electric field strength at key spots is effectively reduced. The insulation system of gas‐insulated bushing for 1100‐kV GIS designed by this method has passed type tests and worked well nearly 3 years. So, this optimization provides a constructive method and useful basis for the design of gas‐insulated bushings for 1100‐kV GIS and other electrical equipment. © 2013 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

show abstract

Online Monitoring Study for SF6 Composition by Optical Cavity Sensing Technology in High-Voltage GIS

Zhang¹,

Yao²,

Meng

2019

Lecture Notes in Electrical Engineering

View full text Add to dashboard Cite

Dielectric Performance of Improved Gas Insulated Bushing for UHV Gis

Cited by 27 publications

References 3 publications

Design of 154 kV Extra-High-Voltage Prototype SF₆ Bushing for Superconducting Electric Power Applications

Design of 154 kV Extra-High-Voltage Prototype SF₆ Bushing for Superconducting Electric Power Applications

Optimization on the internal insulation system of gas‐insulated bushing for 1100‐kV GIS based on multiobjective optimization method

Online Monitoring Study for SF6 Composition by Optical Cavity Sensing Technology in High-Voltage GIS

Contact Info

Product

Resources

About

Dielectric Performance of Improved Gas Insulated Bushing for UHV Gis

Cited by 27 publications

References 3 publications

Design of 154 kV Extra-High-Voltage Prototype SF6 Bushing for Superconducting Electric Power Applications

Design of 154 kV Extra-High-Voltage Prototype SF6 Bushing for Superconducting Electric Power Applications

Optimization on the internal insulation system of gas‐insulated bushing for 1100‐kV GIS based on multiobjective optimization method

Online Monitoring Study for SF6 Composition by Optical Cavity Sensing Technology in High-Voltage GIS

Contact Info

Product

Resources

About

Design of 154 kV Extra-High-Voltage Prototype SF₆ Bushing for Superconducting Electric Power Applications

Design of 154 kV Extra-High-Voltage Prototype SF₆ Bushing for Superconducting Electric Power Applications