基于磁状态调节机制的可控电抗器分析设计

摘要

This paper proposes a controllable reactor magnetic circuit with function of intrinsic magnetic state regulation based on nanocomposite magnetic material, according to the reliability, energy conversation and intelligence of the power system. Firstly, the magnetization model of the material is studied from the macro and micro aspects, and the relationship between coercivity and remanence of this material is determined. Secondly, nanocomposite magnetic material is implanted into traditionally controllable reactor based on the reluctance of magnetic circuit theory. The structure design and electromagnetic design for controllable reactor are completed. Finally, a novel controllable reactor magnetic circuit is designed, and a prototype of 220V/1kV?A/700mH is set up. The experiment system and its control system are then built. Simulation and experimental results show that the inductance value can be regulated continuously and rapidly based on the nanocomposite core. It can be used for reactive power regulation, and also can be as a new type of intelligence, energy-saving power equipment for the safe operation of the intelligence power grid.%针对电力系统对可靠性、节约能源、智能化的要求,提出一种基于纳米复合磁性材料、具有内在磁状态自动调节能力的可控电抗器磁路设计方案.首先,分别从宏观及微观角度研究复合磁性材料的磁化模型,确定剩磁与矫顽力的关系并给出材料的制备工艺;其次,运用磁路磁阻理论分析方法,将制备的纳米复合磁性材料植入传统可控电抗器中,完成电抗器结构设计和电磁设计方案;最后,提出该电抗器的磁路设计方法并制备了一台220V/1kV?A/700mH样机,建立实验系统及其控制系统.仿真及实验结果表明,基于纳米复合磁性材料的可控电抗器仅依靠材料的剩磁即可实现连续、平滑的电感值调节,对电力线路能够进行快速无功功率补偿,节能效果显著.所设计的可控电抗器可以作为一种保障智能化电网安全运行的新型电力设备.