风力轮机变速箱的故障诊断方法基于集成精制复合材料多尺度基于波动的反分散透
1School of Energy and Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China.
Entropy (Basel, Switzerland)
|August 29, 2024
概括
本研究介绍了一种智能方法,用于诊断风力轮机变速箱故障,使用集成精制复合材料多尺度波动式反分散 (ERCMFRDE). 该方法有效地识别复杂的振动信号中的故障,确保可靠的风力发电.
科学领域:
- 可再生能源工程可再生能源工程
- 机械系统诊断 机械系统诊断
- 信号处理 信号处理
背景情况:
- 风力轮机变速箱故障诊断对于可靠的风能发电至关重要.
- 来自变速箱的振动信号通常是非静止的,非线性,并且受到噪声的影响.
- 现有的方法可能会因为这些信号的复杂性而扎.
研究的目的:
- 开发风力轮机变速箱的智能故障诊断方法.
- 为了应对非静止,非线性和杂的振动信号所带来的挑战.
- 为了提高变速箱故障检测的准确性和可靠性.
主要方法:
- 信号分解,降噪和重组使用改进的完整合体实证模式分解与自适应噪声 (ICEEMDAN) 和静止波形变换 (SWT).
- 通过多顺序时刻粗粒加工方法的特征提取,应用于精制复合材料的基于多尺度波动的反分散 (RCMFRDE).
- 使用最小平方支持向量机 (LSSVM) 分类器进行故障诊断.
主要成果:
- 拟议的ERCMFRDE方法有效处理复杂的变速箱振动信号.
- 混合故障特征集成功地从denoised信号中提取出来.
- 实验验证证证实了该方法的有效性和可靠性.
结论:
- 开发的智能故障诊断方法为风力轮机变速箱提供了高精度和强大的性能.
- 这种方法为在具有挑战性的信号条件下检测故障提供了可靠的解决方案.
- 该研究有助于提高风能系统的运行完整性.
相关概念视频
Wind Turbine Machine Models
116
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...
116
The Swing Equation
355
The Swing Equation is a fundamental tool in power system dynamics, especially for analyzing the behavior of generating units like three-phase synchronous generators. This equation emerges from applying Newton's second law to the rotor of a generator, encompassing factors such as inertia, angular acceleration, and the interplay between mechanical and electrical torques.
In a steady-state operation, the mechanical torque (Τm) supplied to the generator is balanced by the electrical torque...
In a steady-state operation, the mechanical torque (Τm) supplied to the generator is balanced by the electrical torque...
355
Turbine-Governor Control
184
Turbine-governor control is crucial for maintaining power system stability by balancing turbine mechanical power output with electrical load demand. This mechanism ensures that generator frequency and rotor speed are within acceptable limits during load variations. Turbine-generator units store kinetic energy due to their rotating masses; this energy is released to meet the load requirement when the load increases. The electrical torque of turbines rises to meet the demand, whereas the...
184
Multimachine Stability
150
Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
150
Generator Voltage Control
137
Generator voltage control is crucial for maintaining the stable operation of synchronous generators and wind turbines. In older models, a DC generator driven by the rotor delivers DC power to the rotor's field winding, and the power is transferred through slip rings and brushes. In the latest models, static or brushless exciters are used. Static exciters rectify AC power from the generator terminals and then transfer the DC power directly to the rotor. Brushless exciters, on the other hand,...
137
Simplified Synchronous Machine Model
204
The Synchronous Machine Model is a fundamental tool in analyzing and ensuring the transient stability of power systems. This model simplifies the representation of a synchronous machine under balanced three-phase positive-sequence conditions, assuming constant excitation and ignoring losses and saturation. The model is pivotal for understanding the behavior of synchronous generators connected to a power grid, particularly during transient events.
In this model, each generator is connected to a...
In this model, each generator is connected to a...
204


