水利水电技术2017，Vol.48Issue(6)：134-140,7.DOI:10.13928/j.cnki.wrahe.2017.06.025
偏远地区风电场并网控制系统间的交互影响分析
Analysis on interactive influence among grid-connected control systems of wind farms in remote areas
陈甜甜 1张鹏 1潘玲 1唐振东 2杨洪耕2
作者信息
- 1. 上海市电力公司电力科学研究院,上海200437
- 2. 四川大学电气信息学院,四川成都 610065
- 折叠
摘要
Abstract
By taking a wind farm in a remote area of the western part of China as an actual case,a quantitative analysis on the interactive influence among the grid-connected systems of the wind farms in the remote areas is made herein with the frequencybased RGA method.In accordance with Mason's theorem,the equivalent output impedance model and the long-distance transmission line distributed parameters model of the wind farm are established,and then the relative gain array (RGA) of the grid-connection with multiple inverters is determined.Through the modelling simulation made on the Simulink simulation platform,it is known from the analysis concerned that the representations of the interactive influences from different system frequencies on the control system during the grid-connection with multiple inverters are as follows:at the frequency segment f ＜ 156 Hz,no any interactive effect is there among the control channels of the multiple grid-connected inverters.Along with the increase of the frequency,the negative interactive effect occurring among the control channels gradually increases and reaches to the maximum when f =691 Hz,and hereafter,the influence of the control with opposite direction occurs.During 814 Hz ＜f ＜ 907 Hz,positive interactive effect occurs among the control channels.Following the increase of the frequency,the relative gain value continuously increases and the positive interactive effect reaches to the extremum when f=1 004 Hz.On the basis of this,the basic law of the dynamic change of the control of the interactive influence along with the change of the number of the grid-connected inverters and the length of the transmission line during the grid-connection of wind farm is deeply analyzed as well.关键词
偏远地区风电场/RGA/控制交互/多并网逆变器Key words
Remote area/wind farms/relative gain array/control of interaction/multiple grid-connected inverters分类
信息技术与安全科学引用本文复制引用
陈甜甜,张鹏,潘玲,唐振东,杨洪耕..偏远地区风电场并网控制系统间的交互影响分析[J].水利水电技术,2017,48(6):134-140,7.
