分布式风电场对配电网暂态电压稳定性的影响  

Effect of Distributed Wind Farm on Transient Voltage Stability of Consumer-side Grid

作　　者：张家熙[1] 李德鑫[2] 

机构地区：[1]吉林大学附属实验中学,长春130024 [2]国网吉林省电力有限公司电力科学研究院,长春130021

出　　处：《吉林电力》2017年第1期24-27,共4页Jilin Electric Power

摘　　要：针对分布式风电场接入配电网后,网侧故障时风机的故障穿越特性对暂态电压稳定性产生较大影响的问题,利用DigSILENT软件改进了双馈式风力发电机(DFIG)模型,使其与实测风机具备相同的低电压穿越特性,并研究了分布式风电场接入配电网不同位置时风机的低电压穿越特性对暂态电压稳定性的影响。研究结果表明,风电场接入网架中心位置的暂态电压稳定性较好,但在故障和电网恢复过程中,配电网电压仍然发生两次电压跌落,而在风电场接入配电网公共连接点配置适当容量的SVG会提升电网暂态电压稳定性。As distributed wind farm access to grid,when the grid occured fault,the characteristics of wind turbine fault ride through will have a greater impact on grid transient voltage stability.This paper,using DigSILENT software,improved DFIG model and made it have same low voltage ride through（LVRT）characteristics with the measured turbine,and study that the characteristics of LVRT impacted of consumer-side grid transient voltage stability at different access points case.The results show that the transient voltage stability of wind farm access grid is good,but in the process of fault and grid recovery,the voltage drop of distribution network still occurs twice.However the method that configured adequate capacity SVG on access point can effective enhance the grid transient voltage stability.

关 键 词：分布式风电场 配电网 暂态电压稳定性 双馈式风力发电机 穿越特性 

分 类 号：TM614[电气工程—电力系统及自动化] TM712