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基于Z源断路器的直流系统保护分析与设计

Analysis and Design of DC System Protection Using Z-Source Circuit Breaker

语言:

中文摘要

本文提出了一种改进的Z源断路器拓扑,在保持公共接地路径的同时,有效抑制了源端反射故障电流。相比传统Z源断路器,该拓扑不仅能应对瞬态大故障,还具备稳态过载保护能力,并可针对故障电流上升率进行优化设计。

English Abstract

A modified Z-source breaker topology is introduced to minimize the reflected fault current drawn from a source while retaining a common return ground path. Conventional Z-source breaker topologies do not provide steady-state overload protection and can only guard against extremely large transient faults. The Z-source breaker can be designed for considerations affecting both rate of fault current r...
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SunView 深度解读

该技术对阳光电源的储能系统(如PowerTitan、PowerStack)及直流侧保护具有重要参考价值。随着储能系统电压等级不断提升,直流侧短路保护是提升系统安全性的核心挑战。该改进型Z源断路器拓扑能够有效抑制故障电流,减少对PCS功率模块的冲击,提升系统可靠性。建议研发团队评估该拓扑在储能变流器直流输入侧的应用潜力,特别是针对高压直流母线保护,以替代传统熔断器或机械断路器,实现更快速、可控的故障隔离,从而优化系统整体的安全性与运维成本。