摘要
设计了一种分相式快速真空断路器,主要由混合式快速机构和固封极柱构成,混合式快速机构包括永磁机构和双线圈斥力机构2部分。利用Ansys Maxwell对快速机构进行了建模和有限元分析及其优化;并考虑实际产品中斥力机构的整体结构布局,对斥力部分线圈骨架材料及结构形式、有无斥力外壳支架进行了针对性的仿真优化。在仿真的基础上,研制了10 kV快速真空断路器的实验样机,并通过大量的实验验证了仿真的正确性。针对因快速机构合闸速度快导致的合闸弹跳大的问题,采用了液压缓冲装置及对其合理的结构设计来解决。最终实测其分闸时间为2.1 ms,分闸反弹小于2 mm,合闸时间为9.6 ms,合闸弹跳小于1 ms,满足国标规定和项目要求。样机在中国电科院试验站通过了包括短路关合和开断试验、机械试验、温升试验及动热稳定试验在内的多项型式试验。
A phase-selective high-speed vacuum circuit breaker is designed in this paper. It is composed of solid pole columns and a hybrid high-speed actuator consisting of a permanent magnet device and a double-coil repulsion actuator. The high-speed actuator has been modeled, analyzed with finite element method and optimized using Ansys Maxwell. And simulating optimization has been carried out for the overall structure of the repulsion mechanism, the coil skeleton material and the structure of the repulsion part, with and without the presence of repulsive force shell bracket in practical product layout. Based on the simulation, the 10 kV high-speed vacuum circuit breaker experimental prototype is developed, and the correctness of the simulation is verified with a lot of experiments. The prototype adopts reasonable structure design and hydraulic buffer device which solved the big closing bounce problem caused by the high closing speed of the actuator. The final measurement results are as follows： breaking time 2.1ms, breaking rebound less than 2mm, closing time 9.6ms, and closing rebound less than 1mm. The results meet the national standard and the project requirements. In the test station in China Electric Power Research Institute, the prototype passed multiple items of type testing, including short-circuit opening-closing test, breaking test, mechanical test, temperature-rise test, and dynamic thermal stability test.
出处
《电网技术》
EI
CSCD
北大核心
2015年第8期2346-2350,共5页
Power System Technology
基金
国家自然科学基金项目(51277019
51337001)~~
关键词
快速断路器
斥力机构
有限元分析
合闸弹跳
型式试验
high-speed breaker
repulsion actuator
finite element analysis
closing bounce
type test
