基于模型预测控制的接触器开关弹跳抑制研究

发布时间：2019-02-28 09:11

【摘要】：该文立足于ABB同步开关技术前沿,基于运动轨迹模型预测进行一类接触器通用弹跳抑制策略研究,旨在不改变接触器自身机械结构参数的前提下从算法角度实现永磁接触器的弹跳控制。核心在于建立永磁接触器运动轨迹的动力学方程,通过模型求解探索接触器弹跳发生的数学机理,对接触器驱动电压的幅值与作用时间进行模型预测控制(model predictive control,MPC)预测,以响应时间最短为优化准则,确保动触头与静触头相接触时速度为零,据此给出驱动电压的取值准则。以某10k V电网母线PT烧毁等严重影响电网安全稳定运行的难题为背景进行接触器弹跳抑制研究,实验表明,所开发MPC策略可有效降低高电压补偿器接触器弹跳导致的涌流冲击,可为开发具有中国特色的同步开关技术提供参考基础。
[Abstract]:Based on the frontier of ABB synchronous switch technology and the prediction of motion trajectory model, a general spring suppression strategy for contactors is studied in this paper. The aim of this paper is to realize the spring control of permanent magnet contactor from the angle of algorithm without changing the mechanical structure parameters of the contactor itself. The core of this paper is to establish the dynamic equation of the track of permanent magnet contactor, to explore the mathematical mechanism of contactor bouncing by solving the model, and to predict the amplitude and acting time of contactor driving voltage by model predictive control (model predictive control,MPC (Model Predictive Control). Taking the shortest response time as the optimization criterion, the speed of the contact between the moving contact and the static contact is zero. Based on this, the criterion of the driving voltage is given. The impact of high voltage compensator contactor bouncing caused by high voltage compensator can be effectively reduced by the developed MPC strategy, which is based on the difficult problem of PT burning of a 10kV power grid bus, which seriously affects the safe and stable operation of the power network, as well as the research of the impact of the contactor bouncing on the high voltage compensator. It can provide a reference basis for the development of synchronous switch technology with Chinese characteristics.
【作者单位】：哈尔滨工业大学电气工程系;
【基金】：国家自然科学基金项目(51177028)~~
【分类号】：TM572

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