Voltage Ratio Traceability of 10 kV Low-Voltage Excited Two-Stage Voltage Transformer

Zhang, Huanghui; Shao, Haiming; Wang, Jiafu; Wang, Wei; Lin, Feipeng; Sun, Tianyu; Zhao, Wei; Li, Chuansheng; Wu, Yiqian

doi:10.1109/tim.2017.2662559

Cited by 8 publications

(2 citation statements)

References 11 publications

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“…Voltage transformers >10 kV are usually designed as a singlestage structure [17]; however, it is difficult to make a single-stage voltage transformer with voltages up to 1000 kV meeting the insulation requirement and with good accuracy. The proposed twostage structure of the 1000 kV SVT could reduce largely the insulation requirement but keep good accuracy.…”

Section: Kv Svtmentioning

confidence: 99%

Compact system for onsite calibration of 1000 kV voltage transformers

Zhao

Huang

Lei

2018

IET Science, Measurement & Technology

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Section: Kv Svtmentioning

confidence: 99%

Compact system for onsite calibration of 1000 kV voltage transformers

Zhao

Huang

Lei

2018

IET Science, Measurement & Technology

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“…The voltage transformer, which may isolate measuring instruments and other equipment from a high-voltage system and expand the potential applications of low-voltage instruments, is a crucial component of power systems [1,2]. Compared to oil-immersed voltage transformers and SF6 gas-insulated voltage transformers, dry-type voltage transformers, which are frequently used in power systems, offer the advantages of straightforward designs, simple maintenance, and low costs [3].…”

Section: Introductionmentioning

confidence: 99%

Detection of Interturn Short-Circuit Faults in Dry-Type Voltage Transformers Using the Pulse Voltage Method

Nie,

Wang,

Wang

et al. 2023

Energies

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This article investigates the application of the pulse voltage method for detecting interturn short-circuit faults in the high-voltage windings of dry-type voltage transformers. We determined the characterization parameters of the high-voltage windings of dry-type voltage transformers and trends in the variation of the characterization parameters with frequency in the presence and absence of faults. The viability of using the pulse voltage method for the detection of interturn short-circuit faults in dry-type voltage transformers was analyzed. A pulse voltage test platform was designed to analyze the response voltage waveforms using pulse-oscillating voltage experiments on transformers with various short-circuit faults. The results demonstrate that during a turn-to-turn short circuit, the equivalent resistance and inductance of a high-voltage winding are significantly lowered. When employing the pulse voltage method to investigate interturn short-circuit faults, tiny inductors are connected in parallel to produce an oscillating voltage waveform that is more uniform. Upon incurring a short circuit between turns, the pulse’s oscillating voltage frequency increases. The greater the number of turns in the short-circuit fault is, the more significant the effect of the test.

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Evolutionary Large‐Scale Multi‐Objective Optimization in Power Systems

2024

Evolutionary Large‐Scale Multi‐Objective Optimization and Applications

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Voltage Ratio Traceability of 10 kV Low-Voltage Excited Two-Stage Voltage Transformer

Cited by 8 publications

References 11 publications

Compact system for onsite calibration of 1000 kV voltage transformers

Compact system for onsite calibration of 1000 kV voltage transformers

Detection of Interturn Short-Circuit Faults in Dry-Type Voltage Transformers Using the Pulse Voltage Method

Evolutionary Large‐Scale Multi‐Objective Optimization in Power Systems

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