暂态能量流法的直驱风电联网系统次同步振荡源定位  

Subsynchronous oscillation source location of direct-drive wind power interconnection system based on transient energy flow method

作　　者：范煜星 王玉鹏 FAN Yuxing;WANG Yupeng(Northeast Electric Power University,Jilin 132012,China)

机构地区：[1]东北电力大学,吉林吉林132012

出　　处：《电气应用》2025年第2期55-63,共9页Electrotechnical Application

摘　　要：风电高比例接入影响了新型电力系统的安全稳定性,容易诱发次同步振荡现象,准确定位振荡源位置是实施有效应对措施的基础。研究了基于暂态能量流法的直驱风电联网系统次同步振荡源的定位方法,针对同步相量量测无法准确测量次同步振荡信息的不足,提出了适用于直驱风机次同步振荡的暂态能量流计算方法,揭示了直驱风机暂态能量中的耗散能量与系统振荡模态和阻尼特性间的关联机理,论证了暂态能量流法对于直驱风电联网系统次同步振荡源定位的适用性。基于EMTDC/PSCAD平台搭建了直驱风机多机并网仿真系统,仿真验证了所提出的基于暂态能量的直驱风电联网系统次同步振荡源定位方法的有效性。The high proportion of wind power access is easy to induce sub-synchronous oscillation in the direct-drive wind power network system.Accurate location of the oscillation source is the basis for implementing effective countermeasures.In this paper,the location method of subsynchronous oscillation source in direct-drive wind power interconnection system based on transient energy flow method is studied.Aiming at the deficiency that synchronous phasor measurement cannot accurately measure sub-synchronous oscillation information,the mathematical model of direct-drive wind turbine is constructed,and the calculation method of transient energy flow suitable for sub-synchronous oscillation is proposed.The correlation mechanism between the dissipated energy in the transient energy of direct-drive wind turbine and the oscillation mode and damping characteristics of the system is revealed,and the applicability of transient energy flow method to the location of sub-synchronous oscillation source in direct-drive wind power interconnection system is demonstrated.Based on EMTDC/PSCAD platform,a multi-machine grid-connected simulation system of direct-drive wind turbine is built.The simulation verifies the effectiveness of the proposed sub synchronous oscillation source location method based on transient energy for direct-drive wind power interconnection system.

关 键 词：直驱风电联网系统 次同步振荡 暂态能量流 振荡源定位 

分 类 号：TM7[电气工程—电力系统及自动化]