使用图形神经网络对风能供暖系统进行智能故障预测和诊断
Yuechao Wang1, Jizhong Zhao2, Donglai Tang3
1College of Computer Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi, China. xjtu_xiaqi@163.com.
Scientific reports
|November 7, 2025
概括
本研究介绍了一种先进的故障预测方法,用于使用多层空间时间图神经网络的风能供暖系统. 该方法提高了清洁能源解决方案的可靠性和诊断准确性.
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.
- 数据科学数据科学数据科学
背景情况:
- 风能供暖系统对于清洁能源至关重要,但由于复杂的操作和恶劣的条件,它们面临着可靠性问题.
- 高效利用风能,特别是在中国北部,需要强大的系统监测和故障预测.
- 现有的方法在多源数据融合和提取关键的时空特征方面扎.
研究的目的:
- 开发适应性故障预测和智能诊断方法,用于风能供暖系统.
- 解决这些复杂系统中数据融合和时空特征提取方面的挑战.
- 提高风能利用的可靠性和运营效率.
主要方法:
- 一个多层次的时空图神经网络 (MSGNN) 框架被开发出来.
- 动态适应值是使用最大后期概率估计和四分位数间范围分析生成的.
- 图形注意力网络,并行子图形架构和时间注意力模块用于特征提取和依赖性分析.
主要成果:
- 提出的方法实现了93.5%的全面预测准确度和0.95.5的故障检测Fβ-score (β=0.5).
- 在诊断能力方面,与传统方法相比,表现出18.6%的改善.
- 在使用42TB的SCADA数据的情况下,在短暂条件下,KL差异为0.09 ± 0.02,表现出强大的稳定性.
结论:
- 基于MSGNN的方法为风能供暖系统提供了卓越的多层次诊断能力.
- 适应值机制可实现实时监控和早期故障预警,提高系统可靠性.
- 该方法为可再生能源基础设施的智能运行和维护提供了显著的进步.
相关概念视频
01:24Wind Turbine Machine Models
554
In the growing field of wind energy, incorporating wind turbine models into transient stability analysis is essential. Induction and synchronous machines are the primary models used, with induction machines being prevalent due to their simplicity and reliability.
Induction machines interact through the rotating magnetic field generated by the stator and the rotor. The key parameter is slip, which is the difference between synchronous speed and rotor speed relative to synchronous speed. Slip is...
Induction machines interact through the rotating magnetic field generated by the stator and the rotor. The key parameter is slip, which is the difference between synchronous speed and rotor speed relative to synchronous speed. Slip is...
554
02:44Heating and Cooling Curves
26.5K
When a substance—isolated from its environment—is subjected to heat changes, corresponding changes in temperature and phase of the substance is observed; this is graphically represented by heating and cooling curves.
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
For instance, the addition of heat raises the temperature of a solid; the amount of heat absorbed depends on the heat capacity of the solid (q = mcsolidΔT). According to thermochemistry, the relation between the amount of heat absorbed or released by a substance, q, and its...
26.5K
01:21Power System Three-Phase Short Circuits
513
Determining the subtransient fault current in a power system involves representing transformers by their leakage reactances, transmission lines by their equivalent series reactances, and synchronous machines as constant voltage sources behind their subtransient reactances. In this analysis, certain elements are excluded, such as winding resistances, series resistances, shunt admittances, delta-Y phase shifts, armature resistance, saturation, saliency, non-rotating impedance loads, and small...
513
01:26The Power Flow Problem and Solution
797
Power flow problem analysis is fundamental for determining real and reactive power flows in network components, such as transmission lines, transformers, and loads. The power system's single-line diagram provides data on the bus, transmission line, and transformer. Each bus k in the system is characterized by four key variables: voltage magnitude Vk, phase angle δk, real power Pk, and reactive power Qk. Two of these four variables are inputs, while the power flow program computes...
797
01:18Fault Types
391
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...
391
01:24Bus Impedance Matrix
492
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,...
492