开发了0.2S类的感应电流变压器400/5/1用于50 Hz-5 kHz频率范围
Michal Kaczmarek1, Blazej Pacholczyk1
1Institute of Mechatronics and Information Systems, Lodz University of Technology, 90-537 Lodz, Poland.
Sensors (Basel, Switzerland)
|January 8, 2025
概括
这项研究开发了一种400A窗型的感应电流变压器 (iCT),用于50Hz和高达5kHz的波频率,其精度为0.2S. 纳米晶核被证明是最佳的,平衡磁性质并最大限度地减少功耗损失.
科学领域:
- 电气工程 电气工程
- 材料科学 材料科学 材料科学
背景情况:
- 精确的电流测量在电力系统中至关重要,特别是随着波扭曲的增加.
- 传统的感应电流变压器 (ICTs) 往往难以在广泛的频率范围内保持精度.
- 开发宽带ICT对于先进的电力质量监测和保护至关重要.
研究的目的:
- 设计和开发一个具有400A额定主电流的窗型感应电流变压器 (iCT).
- 为了达到0.2S准确度级别,用于50 Hz至5 kHz的正弦和扭曲电流.
- 评估和选择宽带iCT应用的最佳磁芯材料.
主要方法:
- 设计和模拟一个窗型iCT与双二次绕线 (5A和1A).
- 分析电气钢,永久合金和纳米晶体 (纳米) 材料的宽带磁性.
- 实验测试四个具有不同初始磁透性的纳米晶核.
- 验证电流误差和相位移与0.2S精度类限制.
主要成果:
- 开发的iCT满足了0.2S精度类要求,适用于50Hz的正弦电流和高达5kHz的扭曲电流.
- 纳米晶体 (纳米) 磁芯因其宽带特性而被确定为最合适的材料.
- 纳米晶核的初始磁透率更高导致了活性功率损失的增加,这使得它们不太适合50/60Hz的操作.
结论:
- 成功开发了一种能够在广泛频谱 (50 Hz - 5 kHz) 中实现高精度的新型窗型iCT.
- 纳米晶核为宽带感应电流变压器提供了可行的解决方案,尽管材料选择需要仔细考虑工作频率.
- 这些发现为设计具有显著含量的现代电网的先进电流测量设备提供了宝贵的见解.
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