Numerical Analysis, Experimental Validation, and Application of DC Interruption With Parallel Vacuum Interrupters

IF 1.9 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC International Transactions on Electrical Energy Systems Pub Date : 2025-02-10 DOI:10.1155/etep/4779710

Siyuan Liu, Yifan Chen, Jinchao Chen, Mengze Yu, Zhiyuan Liu, Yingsan Geng

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Abstract

Large-capacity high voltage direct current circuit breakers (HVDC CBs) are critical equipment for achieving reliable operation of future multiterminal HVDC systems. The objective of this paper is to investigate the interruption characteristics of DCCB with parallel vacuum interrupters. In this paper, the proposed vacuum interrupter is modeled in detail and simulated in the PSCAD environment by taking into account the positive volt-ampere characteristics of the vacuum arc, the current transfer characteristics, and the current sharing characteristics between parallel vacuum interrupters. Then, the vacuum interrupter model is validated by experimental results. The performance of two types of large-capacity multimodule DCCBs is compared regarding operating reliability and actuator decentralization. Meanwhile, the current stress on the VSC branch and the DC interruption characteristics are analyzed. The comparison results show that the 6-module DCCB with series followed by parallel structure is more suitable for high voltage and large-capacity systems. In ±160 kV 4-terminal flexible DC grid, two typical DC fault interruption characteristics of the 6-module DCCB with series followed by parallel structure are simulated and analyzed. The results validate that the multimodule DCCB with series followed by parallel structure has better DC fault interruption performance in multiterminal HVDC systems.

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并联真空断流器直流断流的数值分析、实验验证及应用

大容量高压直流断路器是保证未来多端子直流系统可靠运行的关键设备。本文的目的是研究并联真空灭弧的DCCB的中断特性。本文考虑真空弧的正伏安特性、电流传递特性以及并联真空灭弧间的电流共享特性，对所提出的真空灭弧进行了详细的建模和PSCAD环境下的仿真。然后，用实验结果验证了真空灭流器模型。比较了两种大容量多模块dccb的运行可靠性和执行机构分散性。同时，分析了VSC支路的电流应力和直流中断特性。对比结果表明，串联后并联的6模块DCCB更适合于高压大容量系统。在±160 kV四端柔性直流电网中，模拟分析了串并联六模DCCB的两种典型直流故障中断特性。结果表明，串联后并联结构的多模块DCCB在多端子直流系统中具有较好的直流故障中断性能。

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来源期刊

International Transactions on Electrical Energy Systems ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

6.70

自引率

8.70%

发文量

342

期刊介绍： International Transactions on Electrical Energy Systems publishes original research results on key advances in the generation, transmission, and distribution of electrical energy systems. Of particular interest are submissions concerning the modeling, analysis, optimization and control of advanced electric power systems. Manuscripts on topics of economics, finance, policies, insulation materials, low-voltage power electronics, plasmas, and magnetics will generally not be considered for review.