计及新型柔性限流器的直流系统故障暂态特性分析研究

郑峰; 王威东; 林燕贞; 孙玉波; 涂承谦; 梁宁

doi:10.19912/j.0254-0096.tynxb.2023-0935

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太阳能学报 ›› 2024, Vol. 45 ›› Issue (10) : 199-210. DOI: 10.19912/j.0254-0096.tynxb.2023-0935

计及新型柔性限流器的直流系统故障暂态特性分析研究

郑峰¹, 王威东¹, 林燕贞², 孙玉波³, 涂承谦³, 梁宁⁴

作者信息 +

ANALYSIS AND RESEARCH ON FAULT TRANSIENT CHARACTERISTICS OF DC SYSTEM CONSIDERING NEW FLEXIBLE CURRENT LIMITER

Zheng Feng¹, Wang Weidong¹, Lin Yanzhen², Sun Yubo³, Tu Chengqian³, Liang Ning⁴

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文章历史 +

摘要

为解决传统柔性限流装置在直流电网中存在经济性、实用性不足的问题,提出一种新型直流柔性限流装置,采用模块化限流电感结构,并提出模块化限流电感投入方案,基于该结构提出与其相适应的控制设计方案。该结构提升柔性限流装置的经济性,增强限流装置的容错率,并快速、有效抑制故障电流,实现直流线路永久性故障快速隔离,瞬时性故障无断路器动作行为的自行恢复。为进一步验证所提新型柔性限流装置的有效性,在软件平台搭建多端柔性直流仿真系统,并进行直流线路永久性与瞬时性故障仿真分析。

Abstract

In order to solve the problem of insufficient economy and practicability of traditional flexible current limiting device in DC grid, a modular current limiting inductance structure and input scheme are proposed in this study as a novel form of DC flexible current limiting device. A corresponding control design strategy is suggested based on this structure. The proposed structure enhances the fault tolerance rate of the flexible current limiting device, improves its economy, and increases the speed and efficacy of fault current suppression. It achieves quick isolation of permanent faults in the DC line and enables self-healing of transient faults without the need for circuit breaker activation. To further confirm the efficacy of the proposed device, a software platform is used to build a multi-terminal flexible DC simulation system. This system investigates both permanent and transient faults in the DC line.

导出引用

郑峰, 王威东, 林燕贞, 孙玉波, 涂承谦, 梁宁. 计及新型柔性限流器的直流系统故障暂态特性分析研究[J]. 太阳能学报. 2024, 45(10): 199-210 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0935

Zheng Feng, Wang Weidong, Lin Yanzhen, Sun Yubo, Tu Chengqian, Liang Ning. ANALYSIS AND RESEARCH ON FAULT TRANSIENT CHARACTERISTICS OF DC SYSTEM CONSIDERING NEW FLEXIBLE CURRENT LIMITER[J]. Acta Energiae Solaris Sinica. 2024, 45(10): 199-210 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0935

中图分类号： TM713

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