Výsledky vyhledávání

Akademický článek

Research on differential protection of low frequency transmission lines based on differential principle of sampling values

Autor: PAN Wulue, QIAN Zhengxu, SUN Zhipan, HONG Feng, CAO Wenbin, WANG Song, FANG Yudong

Publikováno v: Zhejiang dianli, Vol 42, Iss 2, Pp 35-42 (2023)

As a fault occurs in a low-frequency transmission line zone， the modular multilevel matrix converters （M3Cs） at both ends of the line limit the fault current amplitude and phase. Under such a circumstance， the current on both sides displays t

Externí odkaz: https://doaj.org/article/4586baa166254f13b0076b4d446ee83e

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Akademický článek

Maloperation analysis and suggested countermeasures for inter-turn protection of high-voltage shunt reactors in offshore wind power transmission

Autor: CAO Wenbin, PAN Wulue, QI Xuanwei, CHEN Shuiyao, FANG Fang, CHEN Xu

Publikováno v: Zhejiang dianli, Vol 42, Iss 1, Pp 54-62 (2023)

Misoperation of the inter-turn protection of high voltage shunt reactors （HVSRs） frequently occurs in submarine cables for offshore wind power transmission during conventional opening and closing operations. The misoperation scenarios are analyze

Externí odkaz: https://doaj.org/article/537daa1e528e4212a97cd9e1ab761ed6

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Akademický článek

Misoperation analysis and logic optimization of distance protection section I of polygonal impedance

Autor: QIAN Zhengxu, QI Xuanwei, CAO Wenbin, WANG Song, PAN Wulue, FANG Yudong

Publikováno v: Zhejiang dianli, Vol 41, Iss 11, Pp 46-51 (2022)

The widely used distance protection is of great significance to operation reliability of power grid. The paper cites an example of misoperation of distance protection section I and points out the defects of action zone configuration of polygonal impe

Externí odkaz: https://doaj.org/article/0ff6c8d435ad411ea4ba56fbcb489959

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Akademický článek

Research on a risk evaluation and suppression method for high-frequency resonance of flexible low-frequency transmission

Autor: HUA Wen, LIN Jintian, QIU Peng, LU Yi, PAN Wulue, ZHANG Jing, LIN Yizhe

Publikováno v: Zhejiang dianli, Vol 41, Iss 10, Pp 87-96 (2022)

Due to the long delay of their control chains， voltage source converters （VSCs） in the high frequency band tend to show negative damping， which may give rise to high-frequency resonance when VSCs are connected to power systems. Flexible low-f

Externí odkaz: https://doaj.org/article/9bf8743f02104b8095d1a88102e2cfb5

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