The Non-unit Transient-based Protection and Its Settings for 35 kV Distribution Lines Based on the Line Boundary Characteristic of Electronic Voltage Transformer

被引：0

作者：

Wu Y. ^{[1
]}

Li Z. ^{[1
]}

Xiao S. ^{[1
]}

Huang Z. ^{[1
]}

Li Z. ^{[1
]}

Wei F. ^{[1
]}

Lin X. ^{[1
]}

机构：

[1] State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, Hubei Province, Wuhan

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2024年 / 44卷 / 12期

关键词：

distribution lines; electronic voltage transformer; line boundary; metal-oxide arrester; non-unit transient-based protection; smart substation;

D O I：

10.13334/j.0258-8013.pcsee.230066

中图分类号：

学科分类号：

摘要：

As a large number of distributed generations are connected to the distribution networks, the performance of traditional three-stage current protection deteriorates seriously. The non-unit transient-based boundary protection is expected to be an effective scheme to improve the relay protection performance of active distribution networks due to its outstanding advantages, such as being independent of power supply property. However, the effectiveness of this approach relies heavily on the strong filtering effect achieved at the line boundary. Therefore, this paper presents that the electronic voltage transformer, the metal-oxide arrester, and the remaining apparatus’s stray capacitance of the smart substation and smart switching station can be used together as the line boundary. The excellent high-frequency filtering characteristics of this arrangement can serve as a foundation for the design of non-unit transient-based boundary protection. Then, the protection criterion is constructed due to the difference in the energy of the high-frequency band of the inside-zone and outside-zone fault voltage traveling waves. Based on the reasonable coordination of the setting threshold and the action sequence, a non-unit transient-based two-stage protection is formed. Finally, the proposed protection scheme is performed based on the PSCAD platform to verify its effectiveness, sensitivity, and reliability, which can be coordinated with three-stage current protection to enhance the protection performance in the active distribution network. ©2024 Chin.Soc.for Elec.Eng.

引用

页码：4666 / 4681

页数：15

共 34 条

[1]

WEN Yunfeng, YANG Weifeng, WANG Ronghua, Review and prospect of toward 100% renewable energy power systems[J], Proceedings of the CSEE, 40, pp. 1843-1856, (2020)

[2]

LI Bo, CHEN Minyou, ZHONG Haiwang, A review of long-term planning of new power systems with large share of renewable energy[J], Proceedings of the CSEE, 43, 2, pp. 555-581, (2023)

[3]

KROPOSKI B，, JOHNSON B, ZHANG Y, Achieving a 100% renewable grid：operating electric power systems with extremely high levels of variable renewable energy[J], IEEE Power and Energy Magazine, 15, 2, pp. 61-73, (2017)

[4]

LIU Kai, LI Youyi, Study on solutions for active distribution grid protection[J], Proceedings of the CSEE, 34, 16, pp. 2584-2590, (2014)

[5]

SHEN Xin, CAO Min, Research on regional protection algorithm of distributed generation integration to active distribution network[J], Transactions of China Electrotechnical Society, 30, S1, pp. 352-357, (2015)

[6]

ZHANG Xuesong, MA Xiao, ZHANG Leiqi, Novel current amplitude differential protection criterion for line with unmeasurable branch in active distribution network [J], Electric Power Automation Equipment, 40, 2, pp. 76-84, (2020)

[7]

WANG Shouxiang, SONG Like, SHU Xin, Adaptive overcurrent protection of active distribution network with high penetration of distributed generations and multiple loads[J], High Voltage Engineering, 45, 6, pp. 1783-1794, (2019)

[8]

ZHANG Huizhi, LI Yongli, Short-circuit current analysis and current protection setting scheme in distribution network with photovoltaic power[J], Power System Technology, 39, 8, pp. 2327-2332, (2015)

[9]

YUAN Zhiyong, XU Quan, XU Gang, Current protection optimization scheme in distribution network with large capacity distributed generators[J], Power System Technology, 45, 5, pp. 1862-1869, (2021)

[10]

DONG Xinzhou, WANG Jun, SHI Shenxing, Principle and algorithm of traveling waves based single-phase-to-ground protection for distribution lines[J], Proceedings of the CSEE, 33, 10, pp. 154-160, (2013)

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