优化NRBO-VMD-AM-BiLSTM混合架构,用于改进变压器油软传感器中的溶解气体度预测
Nana Wang1,2, Wenyi Li1,3, Xiaolong Li1
1College of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot 010080, China.
Sensors (Basel, Switzerland)
|August 28, 2025
概括
这项研究引入了一种新型混合模型,用于精确地分析变压器油中的溶解气体,从而提高故障诊断. 新的NRBO-VMD-AM-BiLSTM框架显著提高了关键故障指标的预测准确性.
科学领域:
- 电气工程
- 材料科学
- 数据科学
背景情况:
- 溶解气体分析 (DGA) 对于变压器故障诊断至关重要,但直接测量具有挑战性.
- 目前用于预测气体度的软传感器方法经常存在不准确性.
- 准确预测溶解的气体,如 (H2) 对于防止变压器故障至关重要.
研究的目的:
- 开发一种新的混合软传感器架构,用于更好地预测变压器油中的溶解气体度.
- 通过提高预测准确性和稳定性来解决现有方法的局限性.
- 通过先进的数据分析建立可靠的变压器故障诊断框架.
主要方法:
- 混合架构集成时间序列分解 (变量模式分解 - VMD),深度学习预测 (注意力机制双向长期内存 - AM-BiLSTM) 和信号重建.
- 使用基于牛顿-拉普森的优化 (NRBO) 算法优化VMD参数,以最大限度地减少包裹并保持稀疏性.
- 通过AM-BiLSTM独立预测内在模式函数 (IMF),然后重建最终度趋势.
主要成果:
- 拟议的NRBO-VMD-AM-BiLSTM模型实现了0.51μL/L的根平均平方误差和1.27%的平均绝对百分比误差 (MAPE) 的 (H2) 预测.
- 在多种溶解气体中表现出卓越的性能和特殊的稳定性.
- 在变压机油DGA的预测准确性方面显著超过现有方法.
结论:
- 该NRBO-VMD-AM-BiLSTM框架提供了用于准确预测变压器油中溶解气体度的转换解决方案.
- 这种先进的方法提高了变压器故障诊断的可靠性,有助于提高电网稳定性.
- 该研究强调了将VMD优化与深度学习整合到电力系统中复杂的时间序列预测的潜力.
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