DAMPING TORSIONAL OSCILLATIONS BY A SUPERCONDUCTING MAGNETIC ENERGY STORAGE UNIT
DAMPING TORSIONAL OSCILLATIONS BY A SUPERCONDUCTING MAGNETIC ENERGY STORAGE UNIT
复制标题
通过超导磁能存储单元阻尼扭转振荡
DOI：
10.1080/07313569408955549
复制
发表时间：
1994
期刊：
影响因子：
--
通讯作者：
Chun
中科院分区：
文献类型：
--
作者：
Chi;Chun
摘要：本文研究了超导磁储能装置对电容补偿电力系统扭转振荡的抑制作用。采用IEEE第二基准模型。为了增加扭转模态的阻尼，采用一种辅助控制器，即比例-积分-导数（PID）或超前滞后控制器，根据发电机转速偏差控制SMES机组的功率调制。所提出的辅助控制器的增益由极点配置方法确定，其中扭转模态的特征值被放置在预定位置。所研究系统的特征值分析和计算机模拟表明，SMES单元在广泛的工作条件下提供足够的阻尼扭矩。稳定性研究表明，PID控制器优于超前滞后控制器。中小企业部门还确保在其中一条平行线停止服务时系统稳定。
ABSTRACT This paper investigates the effect of a superconducting magnetic energy storage (SMES) unit on the repressing of torsional oscillations in a capacitor compensated power system. The IEEE Second Benchmark Model is employed. To increase the damping of torsional modes, an auxiliary controller, proportional-integral-derivative (PID) or lead-lag, is employed to control the power modulation of the SMES unit according to generator speed deviation. The gains of the proposed auxiliary controller are determined by a pole assignment method where the eigenvalues of the torsional modes are placed at a prespecified position. Eigenvalue analysis and computer simulations of the studied system show that the SMES unit provides adequate damping torque over a wide range of operating conditions. Stability investigation shows that the PID controller is better than the lead-lag controller. The SMES unit also ensures a stable system when one of the parallel lines is out of service.