A New Hybrid DC Circuit Breaker Based on Thyristors

被引：0

作者：

Xue S. ^{[1
]}

Chen X. ^{[1
]}

Liu B. ^{[1
]}

Chen S. ^{[1
]}

Zhao Y. ^{[2
]}

Huang X. ^{[2
]}

机构：

[1] Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin

[2] Electric Power Research Institute of State Grid Tianjin Electric Power Company, Tianjin

来源：

Gaodianya Jishu/High Voltage Engineering | 2022年 / 48卷 / 11期

关键词：

adaptive reclosing; DC circuit breaker (DCCB); equipment cost; flexible DC grid; pre-charging; thyristors;

D O I：

10.13336/j.1003-6520.hve.20210909

中图分类号：

学科分类号：

摘要：

In response to the grand goal of “carbon peaking and neutrality”, it is imperative to accelerate the development of flexible DC transmission technology. The hybrid DC circuit breaker (DCCB) is a key device to ensure the safe operation of the flexible DC power grid, and is used to realize fault isolation on the DC side. However, in most of the existing topologies, IGBTs are used as switching elements, which are costly and technically difficult. Therefore, a new hybrid DCCB based on thyristors is proposed in this paper. The circuit breaker mainly uses thyristors instead of IGBTs to switch the circuit state, which greatly reduces the cost and technical difficulty. In addition, the circuit breaker also has the functions of pre-charging and adaptive reclosing, which lays a good foundation for the large-scale application of the circuit breakers. Moreover, a detailed analysis and theoretical derivation of the working process of the proposed circuit breaker is carried out. Simulation models of single-ended equivalent and four-terminal DC power grids are built in PSCAD/EMTDC. The proposed circuit breaker is analyzed and verified in the simulation models, and the performance is compared with the typical circuit breakers. The simulation results verify the feasibility of the proposed circuit breaker and show that, on the basis of similar performance, the cost of the proposed DCCB is greatly reduced compared with the typical DCCBs. © 2022 Science Press. All rights reserved.

引用

页码：4568 / 4577

页数：9

共 26 条

[1] ZHOU Xiaoxin, CHEN Shuyong, LU Zongxiang, Et al., Technology features of the new generation power system in China, Proceedings of the CSEE, 38, 7, pp. 1893-1904, (2018)
[2] TANG Guangfu, LUO Xiang, WEI Xiaoguang, Multi-terminal HVDC and DC-grid technology, Proceedings of the CSEE, 33, 10, pp. 8-17, (2013)
[3] AN T, ZHOU X X, HAN C D, Et al., A DC grid benchmark model for studies of interconnection of power systems, CSEE Journal of Power and Energy Systems, 1, 4, pp. 101-109, (2015)
[4] WANG Shanshan, ZHOU Xiaoxin, TANG Guangfu, Et al., Analysis of submodule overcurrent caused by DC pole-to-pole fault in modular multilevel converter HVDC system, Proceedings of the CSEE, 31, 1, pp. 1-7, (2011)
[5] HE Junjia, Research on key technologies of high voltage DC circuit breaker, High Voltage Engineering, 45, 8, pp. 2353-2361, (2019)
[6] BUCHER M K, WIGET R, ANDERSSON G, Et al., Multiterminal HVDC networks—what is the preferred topology?, IEEE Transactions on Power Delivery, 29, 1, pp. 406-413, (2014)
[7] QIU Peng, HUANG Xiaoming, WANG Yi, Et al., Application of high voltage DC circuit breaker in Zhoushan VSC-HVDC transmission project, High Voltage Engineering, 44, 2, pp. 403-408, (2018)
[8] HE Zhiyuan, WANG Weiru, GU Huaiguang, Et al., Development status and prospect of integrated key equipment of DC power grid with fault current limiting and breaking functions, Proceedings of the CSEE, 40, 11, pp. 3402-3417, (2020)
[9] LI S, ZHANG J Y, XU J Z, Et al., A new topology for current limiting HVDC circuit breaker, International Journal of Electrical Power & Energy Systems, 104, pp. 933-942, (2019)
[10] XIANG B, YU T, LI K, Et al., A novel superconducting current limiting type SF6 gas DC circuit breaker assisted by quenching voltage, IEEE Transactions on Power Delivery, 36, 2, pp. 987-996, (2021)

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