摘要
对应用飞轮储能系统(FESS)抑制电力系统低频振荡的机理进行了研究。在推导了FESS简化动态模型的基础上,采用定子磁场定向控制策略,实现FESS有功、无功的解耦控制,并分别从物理意义、基于阻尼转矩分析(DTA)的理论分析和基于等面积的图解法分析三方面详细地分析了FESS阻尼电力系统低频振荡的机理。最后,以含FESS的单机无穷大系统为例,特征值分析和非线性仿真结果表明在FESS有功和无功控制回路上附加阻尼都能有效抑制电力系统低频振荡,并且阻尼信号附加到有功控制回路上比附加到无功控制回路上抑制效果更好。同时也表明了各种机理分析方法的一致性和正确性。
The mechanism of power system oscillation damping by FESS（Flywheel Energy Storage System） is studied. The simplified dynamic model of FESS is built,the stator flux linkage orientated control strategy is adopted to decouple the control of its active power and reactive power,and the mechanism of power system oscillation damped by FESS is discussed respectively from the physical analysis,the theoretical analysis based on DTA（Damping Torque Analysis） and the graphic analysis based on equal area criterion. The eigenvalue analysis and non-linear simulative results for a single-machine infinite-bus power system with FESS show that,the damping added to either active or reactive power control loop of FESS can effectively suppress the power system oscillation and that added to its active loop has better effect;three analysis methods have identical right conclusions.
出处
《电力自动化设备》
EI
CSCD
北大核心
2011年第9期36-41,共6页
Electric Power Automation Equipment
基金
中央高校基本科研业务费专项资金项目(2010B05814)~~
关键词
电力系统
飞轮储能系统
储能
阻尼转矩法
阻尼
转矩控制
等面积法则
低频振荡
electric power systems
FESS
energy storage
DTA
damping
torque control
equal area criterion
low-frequency oscillation
