低温环境风电齿轮箱超温机理分析及措施研究

Analysis And Research On Over-temperature Mechanism Of Wind Power Gearbox In Low-temperature Environment And Measures

摘要

国内风力发电机组装机容量每年持续增长，应用场合从内陆常温环境正快速向海洋、高原低温等极端气候领域延伸；实践发现常温环境的风电冷却系统在低温场合的可靠性很差。针对大兆瓦风电齿轮箱在低温环境频发高温报警故障问题，通过对齿轮箱润滑冷却系统的工作原理、运行工况、结构参数及控制方案进行研究分析，采用结构重组流阻建模分析法、正交实验法在逐个排除流体回路基本元件的质量问题基础上，提出了风冷散热器结构重组和风冷机组控制逻辑重组两项攻关内容，结构重组优化并降低了低温环境下流体的压阻，控制重组融合了神经网络控制机理，优化并解决了低温环境下控制的非线性问题。风场实际应用表明，风电齿轮箱在低温环境条件下的高温报警问题已得到可靠解决。该研究方案为风电行业后续大兆瓦风力发电机组开发及推广应用，可提供设计经验和技术依据。

Abstract

The installed capacity of domestic wind turbines continues to grow every year, and the application scenarios are rapidly extending from inland normal temperature environments to extreme climate areas such as oceans and plateaus. Practice has found that the reliability of wind power cooling systems in normal temperature environments is very poor in low temperature environments. This paper aims to solve the problem of frequent high temperature alarm failures in large megawatt wind turbine gearboxes in low temperature environments. By studying and analyzing the working principle, operating conditions, structural parameters and control scheme of the gearbox lubrication cooling system, the structural reorganization flow resistance modeling analysis method and the orthogonal experimental method are used to eliminate the quality problems of the basic components of the fluid circuit one by one. Two key research contents are proposed: the structural reorganization of the air-cooled radiator and the reorganization of the control logic of the air-cooled unit. The structural reorganization optimizes and reduces the pressure resistance of the fluid in low temperature environments. The control reorganization integrates the neural network control mechanism, optimizes and solves the nonlinear problem of control in low temperature environments. The actual application of wind farms shows that the high temperature alarm problem of wind turbine gearboxes in low temperature environments has been reliably solved. This research plan can provide design experience and technical basis for the subsequent development and promotion of large megawatt wind turbines in the wind power industry.

关键词

低温环境 / 润滑冷却系统 / 频发高温报警 / 结构重组 / 逻辑重组

Key words

Low temperature environment / Lubrication and cooling system / Frequent high temperature alarms / Structural reorganization / Logical reorganization

参考文献

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