应对大规模风机连锁停运的风电场反脱网系统研究

项目名称： 应对大规模风机连锁停运的风电场反脱网系统研究

项目编号： No.51207064

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 电气科学与工程学科

项目作者： 李正天

作者单位： 华中科技大学

项目金额： 24万元

中文摘要： 近年来大规模风机连锁脱网事故的频繁发生，对风电场并网运行的安全稳定性课题提出新要求：在以往从风电机组的低电压穿越能力、风机保护、并网控制策略等方面开展研究的基础上，还必须从因大规模风机存在而形成的复杂故障形态、风电场合理架构、风电场侧保护与控制优化、无功调控能力的合理运用等关键问题入手，从风电场侧提供解决手段。本课题以加强风电场运行安全性、提高故障情况下风电场的反脱网能力为着眼点，拟开发一套与风电场特点高度相容的、集保护、重合闸优化、以及无功资源协调控制功能于一体的风电反脱网系统。课题的主要研究内容和关键技术包括：含风电电力系统故障电磁暂态过程形态特征提取及风电场架构无序性与保护配置和整定的失调机理；突出保护灵敏性的孤岛保护新方法；风电场中无功资源与保护及重合闸相适应的区域协调控制策略等。本课题的研究成果将为大规模高集中风电场反脱网体系奠定理论基础，也使我国在这方面的研究走在国际前列。

中文关键词： 风电场并网；无功调控；自适应保护；低电压穿越；

英文摘要： In recent years, Large-scale wind turbine cascading offline accidents occured frequently，this phenomenon puts forward many new requirements on the security and stability issues of the Grid-connected Wind Farm. In the past years,research mainly focus on the low voltage ride through(LVRT) capability of the wind turbine、protection of wind turbine、grid-connected control strategy etc.,on the basis of research,we also should proceed with the research from the complex fault form because of large-scale wind turbine existence、reasonable framework of the wind farm、protection and control optimization of the wind farm、rational use of the reactive power regulation ability and other key problems,and provide solutions from the wind farm side. For the purpose of enhancing the security of wind farms operation and improving the anti-off-grid capacity of wind farms under fault conditions, the issue is intended to develop a anti-off-grid wind power system, which is of a highly compatible with the characteristics of wind farm and is a function set of protection, reclosing optimization, and coordination and control of reactive power resources . The main research contents and key technologies of this issue include: the morphological feature extraction of the electromagnetic transient process when the power system with wind power h

英文关键词： Grid-connected wind farm；Reactive power control；Adaptive protection；low voltage ride through；