本文已被：浏览 1843次 下载 1048次
投稿时间：2015-09-28
投稿时间：2015-09-28
中文摘要: 风电场的装机容量越来越大,但相对于电网系统而言,风电场具有明显的弱馈性能.考虑有撬棒电路投入的双馈风电场,对风电场侧故障期间的序阻抗进行了分析,说明了双馈风电场正负序等值阻抗近似相等的假设不成立,并指出风电场的接入对利用保护背侧系统正负序阻抗近似相等原理的突变量选相及方向元件将会产生影响.最后,利用Matlab/Simulink软件建立了仿真模型,分析了故障期间序阻抗的特性,从序阻抗的角度验证了其对突变量保护元件的影响.
Abstract:While wind farm capacity is increasing relative to the grid system,the wind farm has the obvious weak feed.Considering investing the crowbar of DFIG,the fault sequence impedance near wind farm is analyzed,which displays the source of the weak feed and the impact of the weak feed on fault current.The weak feed of wind farm has approximately equal impact on directional element and phase selection relay with positive and negative sequence impedance.Finally,the simulation model based on Matlab verifies the difference of positive and negative sequence impedance which has impacts on fault component protection.
keywords: doubly-fed wind farm crowbar circuit protection weak feed positive and negative sequence impedance fault component
文章编号：20160201 中图分类号： 文献标志码：
基金项目:
| 作者 | 单位 | |
| 杨欢红 | 上海电力学院 | |
| 李庆博 | 上海电力学院 | liqingbo900627@163.com |
| 盛福 | 东方电子股份有限公司技术中心 | |
| 寇柯 | 许继集团许继软件技术中试部 | |
| 马改园 | 许继集团许继软件技术中试部 | |
| 郭富强 | 北京送变电公司 |
引用文本：
杨欢红,李庆博,盛福,等.双馈风电场的弱馈性及风电接入对突变量保护元件的影响[J].上海电力大学学报,2016,32(2):103-108,114.
YANG Huanhong,LI Qingbo,SHENG Fu,et al.Weak Feed of Doubly-fed Wind Farm and Its Impact on Fault Component Protection[J].Journal of Shanghai University of Electric Power,2016,32(2):103-108,114.
杨欢红,李庆博,盛福,等.双馈风电场的弱馈性及风电接入对突变量保护元件的影响[J].上海电力大学学报,2016,32(2):103-108,114.
YANG Huanhong,LI Qingbo,SHENG Fu,et al.Weak Feed of Doubly-fed Wind Farm and Its Impact on Fault Component Protection[J].Journal of Shanghai University of Electric Power,2016,32(2):103-108,114.