UPFC接入对江苏特高压交直流混联电网的动态交互影响研究

发布时间：2018-01-19 05:07

本文关键词： 统一潮流控制器矢量控制策略相对增益矩阵交互影响阻尼特性　出处：《电网技术》2016年09期 　论文类型：期刊论文

【摘要】：2015年底在江苏南京正式投运的中国首台统一潮流控制器(unified power flow controller,UPFC)采用矢量控制策略的模块化多电平换流器。已发表文献中多为关于传统相角控制型UPFC装置交互影响的分析研究,而对矢量控制UPFC与HVDC间的交互影响研究还不够深入。为深入了解UPFC接入对特高压交直流混联电网的影响,文章新建了矢量控制UPFC的非线性数学模型,基于分块化思想构造了包含HVDC系统与矢量控制UPFC的多机全系统开环线性化模型,应用相对增益矩阵(relative gain array,RGA)方法定量分析UPFC控制器、UPFC与HVDC系统间的交互影响强弱,并通过阶跃仿真验证RGA结论的正确性。此外,还通过对发电机功角的非线性仿真以及曲线的Prony分析结果,验证UPFC接入对江苏电网系统低频振荡阻尼特性的影响。
[Abstract]:In end of 2015, China's first unified power flow controller was formally put into operation in Nanjing, Jiangsu Province. UPFC) is a modular multilevel converter with vector control strategy. Most of the published literatures are about the interaction of traditional phase angle controlled UPFC devices. But the research on the interaction between vector control UPFC and HVDC is not deep enough. In order to understand the influence of UPFC access on UHV AC / DC hybrid power grid. In this paper, the nonlinear mathematical model of vector control UPFC is established, and the open-loop linearization model of multi-machine full-system including HVDC system and vector control UPFC is constructed based on the idea of partitioning. The relative gain matrix relative gain array (RGA) method is used to quantitatively analyze the interaction between UPFC controller and HVDC system. The correctness of the RGA conclusion is verified by step simulation. In addition, the nonlinear simulation of generator power angle and the Prony analysis result of the curve are also carried out. Verify the influence of UPFC access on the damping characteristics of low frequency oscillation in Jiangsu power system.
【作者单位】：华北电力大学电气与电子工程学院;国网江苏省电力公司;东南大学电气工程学院;
【基金】：中央高校基本科研业务费专项资金资助(2016XS09) 国家电网公司科技资助项目(SGJS0000DKJS1501080) 国家自然科学基金资助项目(51277029)~~
【分类号】：TM721.3
【正文快照】： (51277029).0引言能源分布的不均匀和经济发展的不平衡正促使现代电网沿着远距离传输、高电压等级、大输送容量和交直流电网互联的方向发展。江苏是能耗大省、资源小省,为有效缓解各地区间能源与负荷分布不均造成的电力分布不均等问题,江苏省正在加紧建设(特)高压交直流电网,

【相似文献】