中国电机工程学报2017，Vol.37Issue(14)：4018-4026,9.DOI:10.13334/j.0258-8013.pcsee.162359
全功率变换风电机组的暂态稳定性分析
Transient Stability Analysis of Wind Turbines With Full-scale Voltage Source Converter
摘要
Abstract
Stability of wind power is the long concerned issue especially in the context of high grid-integration level.According to the size of disturbance,stability for the wind turbine with full scale power converter (FSWT) can be divided into small signal stability and transient stability.This paper was devoted to study the transient stability of FSWT.In order to elucidate the mechanism behind it,a reduced order model of FSWT was derived firstly based on the principal of multi-time scale.Then,the root cause of transient instability of FSWT was revealed using Equal-Area-Principle,which is equivalent to the frequency instability of phase-locked-loop (PLL) caused by grid transients.In addition,impacts of PLL bandwidth,short-circuit-ratio,faulty characteristics etc.on the FSWT stability margin were analyzed.Finally,transient stability analysis was proved by time domain simulations in PSCAD/EMTDC with a detailed FSWT model.Meanwhile,the conclusions can also be used as a guideline for parameters tuning,e.g.PLL and relay protection.关键词
锁相环/风电机组/电压源型变流器/频率/暂态稳定Key words
phase-locked-loop (PLL)/wind turbine/voltage source converter (VSC)/frequency/transient stability分类
信息技术与安全科学引用本文复制引用
张琛,蔡旭,李征..全功率变换风电机组的暂态稳定性分析[J].中国电机工程学报,2017,37(14):4018-4026,9.基金项目
台达环境与教育基金会《电力子科发展计划》的资助(DREM2016005).Sponsored by grants from the Power Electronics Science and Education Development Program of Delta Environmental & Educational Foundation (DREM2016005). （DREM2016005）
