基于自适应滤波器的双馈风机次同步振荡抑制控制方案  

Suppression Strategy of Sub-synchronous Oscillation of Doubly-fed Induction Generator Based on Adaptive Filter

作　　者：朱介北 刘晓龙[1] 聂川杰 俞露杰 李峰[1] 朱学科 丁炅 贾宏杰[1] ZHU Jiebei;LIU Xiaolong;NIE Chuanjie;YU Lujie;LI Feng;ZHU Xueke;DING Jiong;JIA Hongjie(Key Laboratory of Smart Grid of Ministry of Education(Tianjin University),Nankai District,Tianjin 300072,China)

机构地区：[1]智能电网教育部重点实验室(天津大学),天津市南开区300072

出　　处：《中国电机工程学报》2023年第S1期44-56,共13页PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING

基　　金：国家重点研发计划项目(2018YFA0702200)

摘　　要：针对双馈风机串补(doubly-fed induction generator+series compensator,DFIG+SC)系统的传统次同步振荡(subsynchronous oscillation,SSO)抑制策略仅作用于特定SSO频段的技术挑战,该文设计一种基于自适应滤波器的SSO抑制器(adaptive filter sub-synchronous oscillation damper,AF-SSOD)。该AF-SSOD控制器由基于滤波器的SSOD抑制器、具有实时辨识主导SSO频率的频率辨识模块以及可锁定和更新SSOD中心频率的锁频模块构成,实现了AF-SSOD能够抑制多种工况下的SSO,具有结构简单、易于实现和参数整定容易的优点。基于小信号模型分析优化AF-SSOD的关键参数。最后进行仿真验证与对比,结果表明,AF-SSOD可有效抑制不同频率的SSO,具有良好的鲁棒性,其性能显著优于现有传统SSO抑制策略。To address the technical challenge that the conventional sub-synchronous oscillation(SSO)damping strategy can only suppress SSO in a specific frequency band for doubly-fed induction generator+series compensator(DFIG+SC)system,this paper proposes an adaptive filter sub-synchronous oscillation damper(AF-SSOD).The AFSSOD controller consists of a filter-based SSOD suppressor,a frequency identification module to obtain real-time dominant SSO frequency as well as a frequency-locked module to update the central frequency of the SSOD,realizing the high adaptability of SSO suppressing effect under various operating conditions,with the advantages of simple control structure,easy implementation and parameter tuning.The key parameters of AF-SSOD are analyzed and optimized via small signal analysis.Finally,simulation verification and comparisons are carried out,showing that AF-SSOD can effectively suppress SSO in different frequencies with satisfactory robustness and superior performance over existing SSO suppressing strategies.

关 键 词：串联补偿输电网络 双馈风机 次同步振荡 频率辨识 锁频与更新 

分 类 号：TM614[电气工程—电力系统及自动化] TM712