Integrated protection based on multifrequencydomain information for UHVhalf-wavelength AC transmission line

Qingping Wang; Zhiqian Bo; Xiaowei Ma; Ming Zhang; Yingke Zhao; Yi Zhu; Lin Wang

doi:10.1186/s41601-016-0027-8

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Integrated protection based on multifrequencydomain information for UHVhalf-wavelength AC transmission line

Contents | 更新时间：2026-06-25

- Integrated protection based on multifrequencydomain information for UHVhalf-wavelength AC transmission line
- Protection and Control of Modern Power Systems Vol. 1, Issue 2, (2016)
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- DOI：10.1186/s41601-016-0027-8
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- Published：2016
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Qingping Wang, Zhiqian Bo, Xiaowei Ma, et al. Integrated protection based on multifrequencydomain information for UHVhalf-wavelength AC transmission line[J]. Protection and Control of Modern Power Systems, 2016, 1(2).
DOI：

Qingping Wang, Zhiqian Bo, Xiaowei Ma, et al. Integrated protection based on multifrequencydomain information for UHVhalf-wavelength AC transmission line[J]. Protection and Control of Modern Power Systems, 2016, 1(2). DOI： 10.1186/s41601-016-0027-8.

摘要

Half-wavelength AC Transmission (HWACT) can improve capability of AC transmission significantly. According to the basic principle of HWACT

the electromagnetic transient model of HWACT is built to analyze the fault transient process of transmission line. Based on fault characteristics of HWACT

the adaptability of traditional protections for transmission lines is analyzed briefly

such as current differential protection

distance protection and over current protection. In order to solve the problems of conventional protection caused by HWACT

a novel integrated protection based on multi-frequency domain information is proposed in this paper

which uses both the power frequency information and transient information. The integrated protection based on multi-frequency domain information takes advantages of power frequency and transient protections

which can not only improve the performance of traditional protection of AC transmission line but also realize fast fault judgment by transient travelling wave protection.

Abstract

Half-wavelength AC Transmission (HWACT) can improve capability of AC transmission significantly. According to the basic principle of HWACT

the electromagnetic transient model of HWACT is built to analyze the fault transient process of transmission line. Based on fault characteristics of HWACT

the adaptability of traditional protections for transmission lines is analyzed briefly

such as current differential protection

distance protection and over current protection. In order to solve the problems of conventional protection caused by HWACT

a novel integrated protection based on multi-frequency domain information is proposed in this paper

which can not only improve the performance of traditional protection of AC transmission line but also realize fast fault judgment by transient travelling wave protection.

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