基于无线传感网络的风电机组状态监测系统可靠性分析

通过可靠的风电机组状态监测系统,可实时监测风电机组的运行状态,及时发现并排除风电机组的故障。首先对基于无线传感网络的风电机组状态监测系统的可靠性进行研究。为提高监测系统的可靠性,将备用无线传感器节点部署在风电机组中极易发生故障的部件上;根据马尔可夫状态转移模型建立监测系统可靠性函数;运用粒子群算法以监测系统构建成本为目标函数,在监测系统可靠性满足对风电机组的状态健康监测的要求下,优化系统备用节点数目,并对影响监测系统的可靠性因素进行分析。结果表明,增加监测系统的备用节点可有效提高监测系统的可靠性。

基于Web的超大规模风电基地监测系统设计

为提升超大规模风电基地的发电品质,设计基于万维网技术的风电监测系统。根据风电监测系统的需求,建立以浏览器/服务器架构为核心的多层结构;根据数据处理的特点设计系统的数据库结构和数据服务程序结构;实现对风电基地内主要设施的监测、信息检索和统计报表等功能。该监测系统在宏观上反映了整个风电基地的出力状况,在微观上反映了风电场乃至单个风力发电机的工作状态。

基于Netty的风电叶片监测系统设计与实现

风力发电机叶片监测系统能够及时了解叶片的运行状态,该系统的研发具有重要的现实意义。本文给出了系统的拓扑结构图,设计了软件体系结构,并针对叶片状态数据传输的特点,基于Netty框架设计了系统数据传输协议,有效解决了高频数据接收和处理的问题。

Hazard Model Reliability Analysis Based on a Wind Generator Condition Monitoring System

This paper presents an application of the hazard model reliability analysis on wind generators, based on a condition monitoring system. The hazard model techniques are most widely used in the statistical analysis of the electric machine＇s lifetime data. The model can be utilized to perform appropriate maintenance decision-making based on the evaluation of the mean time to failures that occur on the wind generators due to high temperatures. The knowledge of the condition monitoring system is used to estimate the hazard failure, and survival rates, which allows the preventive maintenance approach to be performed accurately. A case study is presented to demonstrate the adequacy of the proposed method based on the condition monitoring data for two wind turbines. Such data are representative in the generator temperatures with respect to the expended operating hours of the selected wind turbines. In this context, the influence of the generator temperatures on the lifetime of the generators can be determined. The results of the study can be used to develop the predetermined maintenance program, which significantly reduces the maintenance and operation costs.