抑制新能源次/超同步振荡的SVG鲁棒自适应控制参数设计方法  

Design method of robust adaptive control parameter of SVG to suppress sub/sup-synchronous oscillation caused by new energy

作　　者：邢纪奎 袁辉 代江 李诗旸 陈雁 刘明顺 辛焕海[1] XING Jikui;YUAN Hui;DAI Jiang;LI Shiyang;CHEN Yan;LIU Mingshun;XIN Huanhai(College of Electrical Engineering,Zhejiang University,Hangzhou 310023,China;Power Dispatching Control Center of Guizhou Power Grid Co.,Ltd.,Guiyang 550000,China;Electric Power Research Institute of China Southern Power Grid,Guangzhou 510663,China)

机构地区：[1]浙江大学电气工程学院,浙江杭州310023 [2]贵州电网有限责任公司电力调度控制中心,贵州贵阳550000 [3]南方电网科学研究院有限责任公司,广东广州510663

出　　处：《电力自动化设备》2024年第8期160-167,共8页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(52207140);贵州电网公司研究项目(GZKJXM20222229)。

摘　　要：现有抑制新能源次/超同步振荡的静止无功发生器(SVG)控制设计方法大多针对单一运行场景,难以确保运行工况变化下系统的小干扰鲁棒稳定性。为此,提出了一种抑制新能源次/超同步振荡的SVG鲁棒自适应控制参数设计方法。论证了短路比(SCR)可用于评估运行工况变化下含SVG的新能源并网系统小干扰稳定裕度;基于短路比分析方法,发现了代表系统小干扰稳定性最差的关键运行工况;基于H_(∞)控制理论,提出了一种关键运行工况下SVG控制参数鲁棒自适应设计方法。该方法能确保含SVG的新能源并网系统在运行工况变化下系统的小干扰鲁棒稳定性。Most existing methods for suppressing sub/sup-synchronous oscillation induced by new energies are focused on a single operating condition,which may be invalid for enhancing small-signal robust stability under varying operating conditions.To address this issue,a design method of robust adaptive control parameter of SVG is proposed to suppress sub/sup-synchronous oscillation caused by new energy.It is demonstrated that short circuit ratio(SCR)is suitable for evaluating small-signal stability margin of a new energy integrated system with SVG under varying operating conditions.Then,based on the SCR analysis method,the critical operating conditions representing the worst small-signal stability of the system are found.A design method of robust adaptive control parameter of SVG under the critical operating conditions based on H_(∞)control theory is proposed.The proposed control method can ensure small-signal robust stability of the new energy integrated system with SVG under varying operating conditions.

关 键 词：新能源设备 静止无功发生器 短路比 小干扰鲁棒稳定性 H_(∞)控制 

分 类 号：TM712[电气工程—电力系统及自动化]