Adaptability of phase selectors based on phase‐to‐phase superimposed currents when confronting cross‐voltage faults in mixed‐voltage quadruple‐circuit line system

Zheng, Tao; Zhang, Jiaqin; Wu, Qiong

doi:10.1049/iet-gtd.2017.1956

Cited by 3 publications

(1 citation statement)

References 10 publications

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“…However, this method only considers power frequency interference caused by an adjacent transmission line and does not account for non-power frequency interference generated on the tested line due to electromagnetic coupling between the adjacent transmission line [13]. Unlike the previously mentioned methods that aim to eliminate interference, the interference method [14] leverages the power frequency interference present on the line under test. This approach transforms a disadvantage into an advantage by utilizing the interference as a measurement power source.…”

Section: Introductionmentioning

confidence: 99%

A New Method for Anti-Interference Measurement of Capacitance Parameters of Long-Distance Transmission Lines Based on Harmonic Components

Wang,

Zhang,

et al. 2024

Electronics

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In the context of strong electromagnetic interference environments, the measurement accuracy of the capacitance parameters of transmission lines under power frequency measurement methods is not high. In this paper, a capacitance parameter anti-interference measurement method for transmission lines based on harmonic components is proposed to overcome the impact of power frequency interference. When applying this method, it is first necessary to open-circuit the end of the line under test. Subsequently, apply voltage to the head end of the tested line through a step-up transformer. Due to the saturation of the transformer during no-load conditions, a large number of harmonics are generated, primarily third harmonic. The third harmonic components of voltage and current on the tested transmission line are extracted using the Fourier transform. The proposed method addresses the influence of line distribution effects by establishing a distributed parameter model for long-distance transmission lines. The relevant transmission matrix for the zero-sequence distributed parameters is obtained by combining Laplace transform and similarity transform to solve the transmission line equations. Using synchronous measurement data from the third harmonic components of voltage and current at both ends of the transmission line, combined with the transmission matrix, this method accurately measures the zero-sequence capacitance parameters. The PSCAD/EMTDC simulation results and field test outcomes have demonstrated the feasibility and accuracy of the proposed method for measuring line capacitance parameters under strong electromagnetic interference.

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Section: Introductionmentioning

confidence: 99%

A New Method for Anti-Interference Measurement of Capacitance Parameters of Long-Distance Transmission Lines Based on Harmonic Components

Wang,

Zhang,

et al. 2024

Electronics

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Coupling characteristic analysis and a fault Pole detection Scheme for single-circuit and double-circuit HVDC transmission lines

Chu

2020

Electric Power Systems Research

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New method of measuring the zero-sequence distributed parameters of non-full-line parallel four-circuit transmission lines

Hongjiang

Gao

2022

International Journal of Electrical Power & Energy Systems

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Adaptability of phase selectors based on phase‐to‐phase superimposed currents when confronting cross‐voltage faults in mixed‐voltage quadruple‐circuit line system

Cited by 3 publications

References 10 publications

A New Method for Anti-Interference Measurement of Capacitance Parameters of Long-Distance Transmission Lines Based on Harmonic Components

A New Method for Anti-Interference Measurement of Capacitance Parameters of Long-Distance Transmission Lines Based on Harmonic Components

Coupling characteristic analysis and a fault Pole detection Scheme for single-circuit and double-circuit HVDC transmission lines

New method of measuring the zero-sequence distributed parameters of non-full-line parallel four-circuit transmission lines

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