基于涡流斥力原理的低压控制与保护电器研究

发布时间：2018-09-07 10:22

【摘要】：开发一种结构简单和短路开断能力优异的交流控制与保护电器是低压开关电器的一个重要发展方向。该文提出一种新型低压控制与保护技术,采用双线圈盘涡流斥力机构取代传统低压交流接触器的电磁操动机构,可以实现低压电器的分合闸控制以及短路早期检测与快速分断的故障保护。首先,采用改进型人工生命算法对双线圈盘斥力机构的斥力盘厚度、线圈盘线径和匝数进行多参数综合寻优,获得了机构快速分断的优化参数。其次,依据优化参数设计样机并对其动态特性加以测试,验证了样机机构具备良好的动态特性。最后,将新型控制与保护电器样机应用于低压配电短路故障实验系统。结果表明,提出的低压控制与保护技术可有效实现短路故障电流的快速抑制与分断,为实现低压控制与保护集成提供了一种新思路。
[Abstract]:It is an important development direction of low voltage switchgear to develop a kind of AC control and protection apparatus with simple structure and excellent short circuit breaking ability. In this paper, a new low voltage control and protection technique is proposed, in which the electromagnetic actuator of the conventional low voltage AC contactor is replaced by a double coil disk vortex repulsion mechanism. It can realize the opening and closing control of low voltage electrical apparatus, the early detection of short circuit and the fault protection of fast breaking. Firstly, the improved artificial life algorithm is used to optimize the repulsive disk thickness, coil diameter and turn number of the double-coil repulsion mechanism, and the optimized parameters for quick break up of the mechanism are obtained. Secondly, the prototype is designed according to the optimized parameters and its dynamic characteristics are tested to verify the good dynamic characteristics of the prototype mechanism. Finally, a new type of control and protection apparatus prototype is applied to the low-voltage distribution short-circuit fault experimental system. The results show that the proposed low-voltage control and protection technology can effectively reduce and break the short-circuit fault current, and provide a new idea for the integration of low-voltage control and protection.
【作者单位】：福州大学电气工程与自动化学院;
【基金】：国家自然科学基金资助项目(51377023)~~
【分类号】：TM52

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