电器与能效管理技术 ›› 2026, Vol. 0 ›› Issue (6): 67-75.doi: 10.16628/j.cnki.2095-8188.2026.06.008

• 电器设计与探讨 • 上一篇    下一篇

基于电弧电压的直流塑壳断路器熄弧特性研究

张森林1, 张亦和1, 王冰青2   

  1. 1 上海电器科学研究所(集团)有限公司, 上海 200063
    2 上海电器科学研究院, 上海 200063
  • 收稿日期:2026-05-09 出版日期:2026-06-30 发布日期:2026-07-14
  • 作者简介:张森林(1990—),男,工程师,主要从事低压电器开关设备研究工作。|张亦和(1999—),男,工程师,主要从事低压电器开关设备研究工作。|王冰青(1992—),男,高级工程师,主要从事低压电器开关设备研究工作。
  • 基金资助:
    上海市2023年度“科技创新行动计划”科技支撑碳达峰碳中和项目(2023DZ1201100)

Research on Arc Extinguishing Characteristics of DC Molded Case Circuit Breaker Based on Arc Voltage

ZHANG Senlin1, ZHANG Yihe1, WANG Bingqing2   

  1. 1 Shanghai Electrical Apparatus Research Institute(Group) Co., Ltd., Shanghai 200063, China
    2 Shanghai Electrical Apparatus Research Institute, Shanghai 200063, China
  • Received:2026-05-09 Online:2026-06-30 Published:2026-07-14

摘要:

低压直流塑壳断路器的短路熄弧条件尚不明确,不同灭弧室配置对应的产品开断性能缺乏定量评价依据。针对此问题,提出一种基于电弧电压的直流塑壳断路器短路开断性能评价方案,通过变更灭弧室栅片数量构建不同预期电弧电压。系统研究了1 500 V/5 kA、750 V/20 kA和750 V/10 kA 3种不同试验参数下,平均弧压对断路器熄弧效果的影响规律。试验结果表明,3种试验参数下断路器可靠熄弧的临界平均弧压系数分别为0.45、1.13、0.89,对应灭弧室所需栅片数量分别为30、34、30片。该研究成果可为低压直流塑壳断路器灭弧室的设计与优化工作提供理论指导,助力实现灭弧室配置最优解的快速筛选。

关键词: 直流塑壳断路器, 短路开断, 熄弧条件, 电弧电压

Abstract:

The short-circuit arc extinguishing conditions of low-voltage DC molded case circuit breakers remain unclear, and no quantitative evaluation criterion is available for the breaking performance of products equipped with different arc extinguishing chamber structures. To solve this problem, an evaluation method for short-circuit breaking performance of DC molded case circuit breakers based on arc voltage is proposed. Different target arc voltages are obtained by adjusting the quantity of arc plates inside the arc extinguishing chamber. It systematically studies the influence of average arc voltage on the arc extinguishing performance of circuit breakers under three test conditions: 1 500 V/5 kA, 750 V/20 kA and 750 V/10 kA. Test results indicate that the critical average arc voltage coefficients for reliable arc extinction under the three working conditions are 0.45, 1.13 and 0.89, and the corresponding required numbers of arc plates for the arc extinguishing chamber are 30, 34 and 30 respectively. The research conclusions can offer theoretical guidance for the design and optimization of arc extinguishing chambers of low-voltage DC molded case circuit breakers, and support rapid screening of the optimal matching scheme for arc extinguishing chamber layout.

Key words: DC molded case circuit breaker, short-circuit breaking, arc extinction condition, arc voltage

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