高密度风电接入地区电压波动因素分析与研究  

Analysis and Research on Voltage Fluctuations in High Density Wind Power Region

作　　者：常喜强 樊艳芳[2] 钟显[2] 段天元[2] 李泽燃 张锋 

机构地区：[1]国网新疆电力调度通信中心,新疆乌鲁木齐830002 [2]新疆大学电气工程学院,新疆乌鲁木齐830047

出　　处：《四川电力技术》2014年第6期5-9,共5页Sichuan Electric Power Technology

基　　金：国家自然科学基金项目(51467019)

摘　　要：依托新疆哈密地区网架结构,针对高密度风电、光伏等新能源接入后哈密地区电网无功电压波动问题,基于风电有功出力随机变化、大规模风电及光伏脱网、电铁冲击负荷变化以及动态无功补偿装置(SVC)控制不协调等因素,仿真分析哈密地区电网电压的波动情况,诊断高密度风电接入地区无功电压存在的风险,并提出改善电压波动的措施。研究结果阐明风电送出点短路容量偏小,风电出力波动易造成电压波动越限;动态无功补偿装置(SVC)控制不协调易引起弱风电送出系统振荡。因此,通过高密度风电接入地区电压运行风险分析,对提高高密度风电接入地区电压稳定水平及减小对风机脱网的影响具有一定的参考价值。Depending on grid structure in Xinjiang Hami and aiming at the reactive and voltage fluctuation problems in the region with the access of high density wind power,solar and other new energy,the voltage fluctuations in Hami region are analyzed and the reactive voltage risk in high density wind region is diagnosed,based on the factors such as the random change of active wind output,the large-scale wind power and photovoltaic tripping,the shock load change of electrified railway and the control incoordination of dynamic reactive power compensation device（ SVC）. Then,the measures to improve the voltage fluctuations are proposed. The research results show that the short-circuit capacity of wind power at sending point is too small,and the wind power output fluctuations could easily make voltage fluctuations exceed the limit. And the incoordination of dynamic reactive power compensation device makes the weak wind power system swing. Therefore,the factor analysis for voltage fluctuations in the high density wind region will provide a reference for improving the voltage stability and reducing the impact on wind turbine generator tripping.

关 键 词：高密度风电 光伏 电气化铁路 SVC 间歇性能源 电压波动 

分 类 号：TM711[电气工程—电力系统及自动化]