800 kV Gas Insulated transmission Line Used in 207m vertical shaft

Li, Liuling; Ma, Enze; Allen, Kenneth C.

doi:10.1109/ichve.2008.4773882

Cited by 3 publications

(2 citation statements)

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“…Currently, the main methods for seismic analysis of electrical equipment are time course analysis and response spectrum analysis [12]. The response spectrum method can reflect the influence of seismic dynamic characteristics and structural dynamic characteristics on structural seismic response, and can determine the maximum response value of the structure [13]. The GIL structure studied in this paper is relatively complex, and the response spectrum method can be used to quantitatively grasp its dynamic characteristics and seismic response rules.…”

Section: Seismic Wave Selectionmentioning

confidence: 99%

Gas Insulated Metal Enclosed Transmission Line (GIL) Seismic Response Analysis

Li,

Zhou,

Wang

et al. 2024

J. Phys.: Conf. Ser.

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The seismic response analysis of a 550 kV gas-insulated metal-enclosed transmission line (GIL) is carried out to address the seismic performance issues in the design of the GIL. Firstly, the GIL is modeled in three dimensions, and the pre-stressed modal analysis is conducted to obtain the vibration characteristics of the GIL structure. Secondly, the seismic response spectrum analysis is conducted according to the national standard, and the seismic characteristics are obtained to meet the requirement of resisting an earthquake of magnitude 9, but there are problems of relatively large stress distribution and small safety coefficient of the brace. Finally, it is proposed to change the cross-section of the bracket to strengthen the stiffness of the bracket to improve the seismic performance of the GIL equipment, and simulations are carried out to verify the results, which show that increasing the cross-section of the bracket can improve the seismic performance of the equipment.

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Section: Seismic Wave Selectionmentioning

confidence: 99%

Gas Insulated Metal Enclosed Transmission Line (GIL) Seismic Response Analysis

Li,

Zhou,

Wang

et al. 2024

J. Phys.: Conf. Ser.

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“…Ceramic dielectrics are preferred for stage capacitors, due to their high voltage capability and relatively compact size. In some design variations, polyester film capacitors with line frequency excitation is used [8]. The capacitance value has direct influence in ripple and regulation of the multiplier.…”

Section: Stage Capacitorsmentioning

confidence: 99%

Analysis of transients in high voltage multipliers

Rajan¹,

Mitra²,

Sharma³

et al. 2021

J. Inst.

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Different forms of Cockcroft-Walton multipliers are widely used to generate very high voltages in the range of millions of Volts. In many applications, high voltage multipliers are insulated by pressurized gas, to realize compact systems. These systems are often stressed to high operating electric fields and suffer frequent discharges especially during high voltage conditioning phase. During high voltage discharges, transient voltages appear in the system creating higher stresses than normal operation in components. Parasitic capacitance between the high voltage system and ground can significantly affect transients in the system. In this paper, a model for analyzing transients in series coupled high voltage multiplier is presented. Typical transient voltage levels in stage inductors and capacitors are discussed. Experimental results with 1 MV, 100 mA symmetrical Cockcroft-Walton multiplier is presented to corroborate predictions from theoretical model.

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Design and test of 2250 kVsemi-flexible SF<inf>6</inf> insulated high voltage pulse transmission line

Wang

Liu

Song

et al. 2012

2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC)

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A high voltage pulse transmission line (TL) insulated by SF 6 is described which is used in high power microwave and high power pulse technology. According to requirements, we adopt compressed SF 6 gas as insulation and Polyphenylene Oxide (PPO) as support between inner and outer conductor which use corrugated structure with some depth to improve flexibility. For safety in application, stainless steel wire is used as tension component. Tests verify that attenuation of TL is 0.016dB/m when transmitting a signal with 3ns pulse width, 1kHz repetition frequency. Characteristic impedance of TL is 50ȍ. Flange and transition connecter are discussed for application. In following work, breakdown strength of SF 6 gas with different pressure under pulse high voltage will be studied in order to compare to data under AC and DC situations and achieve breakdown theory of SF 6 gas under some pulse high voltage situations.

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800 kV Gas Insulated transmission Line Used in 207m vertical shaft

Cited by 3 publications

References 0 publications

Gas Insulated Metal Enclosed Transmission Line (GIL) Seismic Response Analysis

Gas Insulated Metal Enclosed Transmission Line (GIL) Seismic Response Analysis

Analysis of transients in high voltage multipliers

Design and test of 2250 kVsemi-flexible SF<inf>6</inf> insulated high voltage pulse transmission line

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