| 引用本文: | 余银钢,潘天红.新型双机构快速机械开关断路器结构与性能分析[J].电力系统保护与控制,2024,52(20):144-153.[点击复制] |
| YU Yingang,PAN Tianhong.Structure and performance analysis of a new type of fast mechanical switch circuit breaker with a double mechanism[J].Power System Protection and Control,2024,52(20):144-153[点击复制] |
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| 摘要: |
| 基于电磁斥力机构的快速机械开关在电力系统故障限流、电能质量控制、相控开关等领域具有广阔的应用前景。为了提高断路器的开断能力，设计了一种新型双机构快速机械开关。该开关结合了弹簧操作机构和电磁斥力机构的优点，在保证开断可靠性的同时，还能够实现三相分相相控快速开断。依据电磁斥力机构工作原理，推导了电磁斥力的计算方程，建立了电磁斥力机构的三维有限元模型，分析了其场路耦合的动态特性。通过分析不同机构参数，研究了它们对电流和电磁斥力的影响规律，给出了快速机械开关设计的指导性原则。并结合对关键部位的结构强度仿真分析，完成了新型快速机械开关样机设计。实验结果表明，该新型快速机械开关的全开断时间为15.5 ms，验证了设计方案的正确性和可靠性。 |
| 关键词: 电力系统 电磁斥力机构 快速开断 新型双机构 结构强度分析 |
| DOI：10.19783/j.cnki.pspc.231599 |
| 投稿时间：2023-12-16修订日期：2024-03-03 |
| 基金项目:安徽省科技创新攻坚计划项目资助(202423i08050033)；安徽省重点研究与开发计划项目资助(202104a05020078) |
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| Structure and performance analysis of a new type of fast mechanical switch circuit breaker with a double mechanism |
| YU Yingang1,2,PAN Tianhong1 |
| (1. School of Electrical Engineering and Automation, Anhui University, Hefei 230601, China; 2. Anhui Province Joint
Construction Discipline Key Laboratory of High Reliable Power Distribution Technology, Hefei 230009, China) |
| Abstract: |
| A fast mechanical switch using an electromagnetic repulsion mechanism has broad applications in fields such as power system fault current limiting, power quality control, and for a phase-controlled switch. To improve the breaking capacity of the circuit breaker, a new fast mechanical switch with a double mechanism is designed, one which combines the advantages of a spring operating mechanism and an electromagnetic repulsion mechanism. The presented switch ensures the reliability of breaking and also realizes three-phase split-phase phase-controlled rapid breaking. From its working principle, the calculation equation of the electromagnetic repulsion mechanism is deduced, and a three-dimensional finite element model of the mechanism is established. In addition, the corresponding field-path coupling dynamic characteristics are analyzed. The influence laws of different mechanism parameters on the current and electromagnetic repulsion are also analyzed. The guiding principles for the design of a fast mechanical switch are given. Combined with the structural strength simulation analysis of key parts, the prototype design of a new fast mechanical switch is completed. The experimental results show that the full breaking time of the new fast mechanical switch is 15.5 ms, which verifies the correctness and reliability of the design scheme. |
| Key words: power system electromagnetic repulsion mechanism high-speed switch new double mechanism structural strength analysis |
