针对风电场运行维护、故障诊断及监控的需要,提出了基于LabVIEW的风力发电机组远程在线监控系统的设计方法。通过利用虚拟仪器灵活的编程语言和强大的数据处理分析及网络通信技术,进而实现系统的远程在线监控。阐述了系统的硬件组成、...针对风电场运行维护、故障诊断及监控的需要,提出了基于LabVIEW的风力发电机组远程在线监控系统的设计方法。通过利用虚拟仪器灵活的编程语言和强大的数据处理分析及网络通信技术,进而实现系统的远程在线监控。阐述了系统的硬件组成、软件设计及各个界面的功能,通过对风力发电机组温度采集部分的介绍,来分析整个风力发电机组系统的数据采集的思路。着重介绍了利用LabVIEW Web Server网络通信技术,将开发的系统界面发布在Web上的实现过程,并在客户端通过浏览器对远程数据进行监控。整个设计系统经实验验证表明性能良好、实现简单,可以作为风力发电机组的数据采集和远程监控使用。展开更多
结合定子双绕组感应发电机(DWIG)在风力发电场合的运行特点,建立了风力DWIG的优化设计模型,提出了相应的优化目标、优化变量及约束条件。针对粒子群优化算法早熟收敛的问题,提出了一种具有向成功和失败双重学习能力的遗传-粒子群综合算...结合定子双绕组感应发电机(DWIG)在风力发电场合的运行特点,建立了风力DWIG的优化设计模型,提出了相应的优化目标、优化变量及约束条件。针对粒子群优化算法早熟收敛的问题,提出了一种具有向成功和失败双重学习能力的遗传-粒子群综合算法(GPSMA)。在此基础上,分别以转速范围内的控制绕组电流及额定效率为优化目标,利用GPSMA对一台18.5 k W的DWIG进行了优化设计,并对2套优化方案进行了分析。结果表明,优化之后的样机的控制绕组电流最大值下降了62.7%或额定效率提高了0.94%,说明GPSMA有助于DWIG优化设计。展开更多
This paper focuses on the wind energy conversion system (WECS) with the three main electrical aspects: 1) wind turbine generators (WTGs), 2) power electronics converters (PECs) and 3) grid-connection issues. The curre...This paper focuses on the wind energy conversion system (WECS) with the three main electrical aspects: 1) wind turbine generators (WTGs), 2) power electronics converters (PECs) and 3) grid-connection issues. The current state of wind turbine generators are discussed and compared in some criteria along with the trends in the current WECS market, which are ‘Variable Speed’, ‘Multi-MW’ and ‘Offshore’. In addition, the other crucial component in the WECS, PECs will be discussed with its topologies available in the current WECS market along with their modulation strategies. Moreover, three main issues of the WECS associating with the grid-connection, fault-ride through (FRT) capability, harmonics/interharmonics emission and flicker, which are the power quality issues, will be discussed due to the increasing responsibility of WECS as utility power station. Some key findings from the review such as the attractiveness of BDFRG are presented in the conclusion of this paper.展开更多
文摘针对风电场运行维护、故障诊断及监控的需要,提出了基于LabVIEW的风力发电机组远程在线监控系统的设计方法。通过利用虚拟仪器灵活的编程语言和强大的数据处理分析及网络通信技术,进而实现系统的远程在线监控。阐述了系统的硬件组成、软件设计及各个界面的功能,通过对风力发电机组温度采集部分的介绍,来分析整个风力发电机组系统的数据采集的思路。着重介绍了利用LabVIEW Web Server网络通信技术,将开发的系统界面发布在Web上的实现过程,并在客户端通过浏览器对远程数据进行监控。整个设计系统经实验验证表明性能良好、实现简单,可以作为风力发电机组的数据采集和远程监控使用。
文摘结合定子双绕组感应发电机(DWIG)在风力发电场合的运行特点,建立了风力DWIG的优化设计模型,提出了相应的优化目标、优化变量及约束条件。针对粒子群优化算法早熟收敛的问题,提出了一种具有向成功和失败双重学习能力的遗传-粒子群综合算法(GPSMA)。在此基础上,分别以转速范围内的控制绕组电流及额定效率为优化目标,利用GPSMA对一台18.5 k W的DWIG进行了优化设计,并对2套优化方案进行了分析。结果表明,优化之后的样机的控制绕组电流最大值下降了62.7%或额定效率提高了0.94%,说明GPSMA有助于DWIG优化设计。
文摘This paper focuses on the wind energy conversion system (WECS) with the three main electrical aspects: 1) wind turbine generators (WTGs), 2) power electronics converters (PECs) and 3) grid-connection issues. The current state of wind turbine generators are discussed and compared in some criteria along with the trends in the current WECS market, which are ‘Variable Speed’, ‘Multi-MW’ and ‘Offshore’. In addition, the other crucial component in the WECS, PECs will be discussed with its topologies available in the current WECS market along with their modulation strategies. Moreover, three main issues of the WECS associating with the grid-connection, fault-ride through (FRT) capability, harmonics/interharmonics emission and flicker, which are the power quality issues, will be discussed due to the increasing responsibility of WECS as utility power station. Some key findings from the review such as the attractiveness of BDFRG are presented in the conclusion of this paper.
