先进的多尺度CNN-BiLSTM用于强大的光伏故障检测
Xiaojuan Zhang1,2, Bo Jing1, Xiaoxuan Jiao1
1College of Aeronautics Engineering, Air Force Engineering University, Xi'an 710051, China.
Sensors (Basel, Switzerland)
|July 30, 2025
概括
这项研究引入了一种先进的CNN-BiLSTM模型用于光伏 (PV) 故障检测,在具有挑战性的工业环境中显著提高了准确性. 新架构提高了可再生能源系统的可靠性.
科学领域:
- 可再生能源系统可再生能源系统
- 在工程领域的人工智能.
- 信号处理和机器学习
背景情况:
- 光伏 (PV) 系统需要可靠的故障检测,以确保运行安全和效率.
- 现有的方法在杂,不完整和不平衡的工业数据方面面临局限性.
- 需要先进的算法来应对光伏系统中复杂的故障检测挑战.
研究的目的:
- 为增强光伏故障检测提出一个创新的高级CNN-BiLSTM架构.
- 在复杂的工业环境中提高准确性和稳定性.
- 在可再生能源故障检测中建立时间特征融合的新范式.
主要方法:
- 开发了一个先进的CNN-BiLSTM框架,集成多个尺度的特征提取 (内核大小为3,7,15,31的CNN) 和层次关注.
- 采用了具有多头注意力的自适应特征融合网络,以结合多个尺度的特征.
- 采用双层双向LSTM,用于最终的故障分类.
主要成果:
- 在极端工业条件下实现了83.25%的准确性,比基线CNN-BiLSTM (37.93%) 有119.48%的相对改善.
- 多尺度CNN为性能增长贡献了28.0%,而自适应特征融合为22.0%.
- 对抗严重噪声 (σ = 0.20),缺失数据 (15%) 和异常值 (8%) 的表现出卓越的稳定性.
结论:
- 拟议的高级CNN-BiLSTM架构在光伏故障检测准确性和可靠性方面提供了显著的改进.
- 该框架的稳定性使其非常适合于现实世界的工业部署.
- 这项研究为可再生能源故障检测中的时间特征融合设定了新的标准.
相关概念视频
01:18Fault Types
127
When analyzing a single line-to-ground fault from phase A to ground at a three-phase bus, it is important to consider the fault impedance. This impedance is zero for a bolted fault, equal to the arc impedance for an arcing fault, and represents the total fault impedance for a transmission-line insulator flashover. To derive sequence and phase currents, fault conditions are translated from the phase domain to the sequence domain.
For line-to-line faults occurring between phases B and C, the...
For line-to-line faults occurring between phases B and C, the...
127
01:24Bus Impedance Matrix
177
Calculating subtransient fault currents for three-phase faults in an N-bus power system involves using the positive-sequence network. When a three-phase short circuit occurs at a specific bus, the analysis uses the superposition method to evaluate two separate circuits.
In the first circuit, all machine voltage sources are short-circuited, leaving only the prefault voltage source at the fault location. The positive-sequence bus impedance matrix can be determined by solving the nodal equations,...
In the first circuit, all machine voltage sources are short-circuited, leaving only the prefault voltage source at the fault location. The positive-sequence bus impedance matrix can be determined by solving the nodal equations,...
177