Development of 1‐GHz GIS surge sensor

Murase, Hiroshi; Ōkubo, H.; Aoyagi, H.; Yanabu, S.

doi:10.1002/eej.4391090209

Cited by 7 publications

(4 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The voltage is applied in 4-minute intervals at a gas pressure of 0.5 MPa (absolute pressure). The voltage was transmitted by feeding a signal from a capacitive voltage divider with a frequency range of up to 1 GHz [12] to an optical converter (E/O, O/E conversion), and then was measured by a digital oscilloscope (frequency band 1 GHz, 5 GS/s). The frequency response range of the whole measuring system was 100 MHz, which was considered sufficient for the experiments.…”

Section: Experimental Circuitmentioning

confidence: 99%

Insulation characteristics of GIS under nonstandard lightning‐impulse oscillations: Insulation characteristics under single‐frequency oscillations with various frequencies and damping ratios

Yuasa

Suzuki

Okabe

2003

Electrical Engineering Japan

View full text Add to dashboard Cite

SUMMARYTo improve GIS insulation specifications, it is important to recognize the insulation characteristics under oscillatory overvoltage waveforms occurring in the field. This paper describes investigations of insulation characteristics for single-frequency oscillatory waveforms with various frequencies and damping ratios. It was found that minimum breakdown voltages (V min ) rose with frequency rising under the same damping condition and V min rose with damping ratio rising under the same frequency condition. From an analysis of actual breakdown voltage characteristics, the probability of breakdown at a valley of oscillation rose with damping increasing. It was found that the insulation characteristics were treated all-inclusively based on the characteristics of V min for rise time or damping time.

show abstract

Section: Experimental Circuitmentioning

confidence: 99%

Insulation characteristics of GIS under nonstandard lightning‐impulse oscillations: Insulation characteristics under single‐frequency oscillations with various frequencies and damping ratios

Yuasa

Suzuki

Okabe

2003

Electrical Engineering Japan

View full text Add to dashboard Cite

show abstract

“…Note that the gas pressure was 0.5 MPa (absolute pressure), and the interval for the voltage application was 4 minutes. The applied voltage transmitted a signal in the capacitance divider [14] for up to 1 GHz via the optical converter (E/O, O/E conversion), and then was measured in the digital oscilloscope (frequency range 1 GHz, 5 GS/s). The frequency response for the measurement system overall was over 100 MHz, considered a sufficient response for measuring the voltage being generated.…”

Section: The Experimental Circuitmentioning

confidence: 99%

Insulation characteristics of GIS under nonstandard lightning impulse oscillations: Insulation characteristics under double‐frequency oscillations with various frequencies and damping ratios

Yuasa

Kato

Okabe

2003

Electrical Engineering Japan

View full text Add to dashboard Cite

SUMMARYTo improve GIS insulation specifications, it is important to recognize the insulation characteristics under oscillatory overvoltage waveforms occurring in the field. This paper describes investigations of insulation characteristics for double-frequency oscillatory waveforms with various frequencies and damping ratios. It was found that minimum breakdown voltages (V min ) were irrelevant to frequency changes in the range of experimental conditions under the same damping conditions. On the other hand, V min rose with the damping ratio rising under the same frequency conditions. The insulation characteristics at a valley of oscillation were investigated using actual breakdown voltages. It was found that the insulation characteristics were treated all-inclusively based on the characteristics of V min for damping time.

show abstract

“…Similar to non-contact voltage division, space capacitance between the conductor and installed electrode is used as a high-voltage arm. Based on cone-shape design of the low-voltage arm, H. Murase developed a GIS sensor with a step response time of 350 ps and an upper frequency limit beyond 1 GHz [24]. However, the measuring point of this technique is limited to GIS.…”

Section: Introductionmentioning

confidence: 99%

Development of Broadband Resistive–Capacitive Parallel–Connection Voltage Divider for Transient Voltage Monitoring

Xie¹,

Zhou²,

Ding

et al. 2022

Energies

View full text Add to dashboard Cite

The on-site measurement of transient voltages is of great significance in analyzing the fault cause of power systems and optimizing the insulation coordination of power equipment. Conventional voltage transformers normally have a narrow bandwidth and are unable to accurately measure various transient voltages in power systems. In this paper, a wideband parallel resistive–capacitive voltage divider is developed, which can be used for online monitoring of transient voltages in a 220 kV power grid. The structures of the high-voltage and low-voltage arms were designed. The internal electric field distribution of the high-voltage arm was analyzed. The influence factors and improvement techniques of the upper frequency limit were studied. The parameters of the elements of the divider were determined. The voltage withstand performances and scale factors under lightning impulses and AC and DC voltages, the temperature stabilities of scale factors and the step response and bandwidth of the developed voltage divider were tested. The results show that the deviations of the scale factors under various voltage waveforms and different temperatures ranging from −20 to 40 °C are within 3%. The withstand voltage meets the relevant requirements specified in IEC60071-1-2011. The step response 10~90% rise time is approximately 29 ns, and the 3 dB bandwidth covers the range of DC to 10 MHz.

show abstract

Development of 1‐GHz GIS surge sensor

Cited by 7 publications

References 10 publications

Insulation characteristics of GIS under nonstandard lightning‐impulse oscillations: Insulation characteristics under single‐frequency oscillations with various frequencies and damping ratios

Insulation characteristics of GIS under nonstandard lightning‐impulse oscillations: Insulation characteristics under single‐frequency oscillations with various frequencies and damping ratios

Insulation characteristics of GIS under nonstandard lightning impulse oscillations: Insulation characteristics under double‐frequency oscillations with various frequencies and damping ratios

Development of Broadband Resistive–Capacitive Parallel–Connection Voltage Divider for Transient Voltage Monitoring

Contact Info

Product

Resources

About