高压电器2025，Vol.61Issue(6)：43-51,9.DOI:10.13296/j.1001-1609.hva.2025.06.005
低压混合式直流断路器开断特性研究
Research on Interruption Characteristics of Low Voltage Hybrid DC Circuit Breaker
摘要
Abstract
The introduction of a large number of renewable clean energy in power system not only facilitates efficient utilization of electric energy,but also imposes new requirements on DC circuit breakers for system control and protec-tion.Particularly in the field of photovoltaic power generation the increase of voltage levels of photovoltaic systems causes to DC circuit breaker to withstand higher voltage(>1 500 V),and the emergence of hybrid DC circuit breaker has addressed the issue of hard interruption at high voltage.The fast response of IGBT in the hybrid DC circuit break-er has provided the foundation for rapid DC interruption.Meanwhile,the DC miniature circuit breaker,functioning as a mechanical switch,can quickly raises the arc voltage to the conduction voltage of the IGBT during the breaking pro-cess to achieve commutation.After verifying the rapid interruption advantage of the hybrid DC circuit breaker in the DC 1 000 V system,the interruption performance of the hybrid DC circuit breaker is simulated and predicted in the DC 1 500 V system and,after the comparison of the arc energy,the interruption advantage of the hybrid DC circuit breaker is reflected further.The research of the hybrid DC circuit breaker has provided idea for both control and pro-tection of low voltage system.关键词
机械开关/直流微型断路器/电弧能量/混合式直流断路器/开断特性Key words
mechanical switch/miniature DC circuit breaker/arc energy/hybrid DC circuit breaker/interruption characteristics引用本文复制引用
熊德智,陈石东,郎霄剑,肖宇,尹健宁..低压混合式直流断路器开断特性研究[J].高压电器,2025,61(6):43-51,9.基金项目
国网湖南省电力有限公司科技项目(5216AG21N00C).Project Supported by Science and Technology Project of State Grid Hunan Electric Power Co.,Ltd.(5216AG21N00C). （5216AG21N00C）
