中国电机工程学报2017，Vol.37Issue(14)：4002-4007,6.DOI:10.13334/j.0258-8013.pcsee.162235
新能源发电并网系统的同步参考坐标系阻抗模型及其稳定性判别方法
Synchronous Reference Frame based Impedance Model and Stability Criterion for Grid-connected Renewable Energy Generation Systems
摘要
Abstract
Recently,new types of subsynchronous oscillation (SSO) issues have occurred in grid-connected renewable energy generation systems.To address these issues,there is an urgent need to develop appropriate modeling and stability analysis methods.In this paper,a direct drive permanent magnet synchronous generator-based wind farm connected to an AC system was selected as an example.The synchronous reference frame (SRF) based impedance models for both the wind farm and the AC system were established,and they were connected to form a total SRF-based impedance model according to system topology.Then,a novel stability criterion based on such total SRF impedance model was proposed to estimate the stability of SSO and to calculate its damping/frequency.Finally,both time-domain simulations and eigenvalue analyses were carried out to verify the effectiveness and accuracy of the proposed method.It offers promising potential to perform impedance network modeling and quantitative stability analysis for the practical complex renewable energy generation systems.关键词
新能源发电并网系统/次同步振荡/SRF阻抗模型/稳定性判据Key words
renewable energy generation systems/subsynchronous oscillation (SSO)/SRF impedance model/stability criterion分类
信息技术与安全科学引用本文复制引用
刘华坤,谢小荣,何国庆,刘纯..新能源发电并网系统的同步参考坐标系阻抗模型及其稳定性判别方法[J].中国电机工程学报,2017,37(14):4002-4007,6.基金项目
国家重点研发计划(2016YFB0900104) （2016YFB0900104）
国家电网公司科技项目(SGXJ0000KXJS1500670).Project Supported by the National Key Research and Development Program of China (2016YFB0900104) （SGXJ0000KXJS1500670）
the State Grid Corporation of China(SGXJ0000KXJS1500670). （SGXJ0000KXJS1500670）
