On-line monitoring of eigen-frequency and stability of power system by use of SMES
On-line monitoring of eigen-frequency and stability of power system by use of SMES
复制标题
利用SMES在线监测电力系统特征频率和稳定性
DOI：
10.1016/j.ijepes.2012.03.052
复制
发表时间：
2012
影响因子：
5.2
通讯作者：
Katsuhiko Shibata
中科院分区：
文献类型：
--
作者：
Yasuyuki Shirai;Tanzo Nitta;Katsuhiko Shibata
从在线数据中实时掌握电力系统稳定裕度是有用的。我们建议利用超导磁能存储（SMES）系统根据在线数据估计系统运行状况。在本文中，我们开发了所提出的方法，通过使用 SMES 和锁定放大器来实时监测电力系统的特征频率，该特征频率会因系统运行条件（例如发电机输出变化）而随时间变化。在模拟型电力系统模拟器和模拟器的模型SMES上进行了基础实验。通过使用SMES，成功地在线测量、跟踪和监测了根据运行条件变化的特征频率变化。稳定裕度可以通过监测的特征频率来估计。根据实验结果讨论了所提出方法的可用性。
It is useful to grasp power system stability margin from on-line data in real time. We have proposed to estimate the system operating conditions from on-line data by use of superconducting magnetic energy storage (SMES) system. In this paper, we developed the proposed method to monitor the eigen-frequency of the power system in real time, which changes with time due to the system operating conditions (such as, generator output change), by use of a SMES and a lock-in amplifier. Basic experiments were carried out on an analogue-type power system simulator and a model SMES for the simulator. By use of the SMES, the eigen-frequency change according to the operating condition change was successfully measured, tracked and monitored on-line. The stability margin can be estimated by the monitored eigen-frequency. The availability of the proposed method is discussed on the experimental results.