Power system stability assessment during restoration based on a wide area measurement system
Power system stability assessment during restoration based on a wide area measurement system
复制标题
DOI：
10.1049/iet-gtd.2012.0054
复制
发表时间：
2012-11
影响因子：
2.5
通讯作者：
S. Nourizadeh;M. J. Karimi;A. Ranjbar;A. Shirani
中科院分区：
文献类型：
--
作者：
S. Nourizadeh;M. J. Karimi;A. Ranjbar;A. Shirani
电力系统在恢复过程中的在线稳定性评估还没有得到很好的解决。然而，广域测量系统（WAMS）的引入使得在线监测稳定性成为可能。本研究从技术上详细分析了WAMS恢复过程中的稳定性。采用电力系统建设策略作为恢复方法，在恢复的前期和后期将电力系统划分为孤岛，并分别进行互联。事实上，在恢复的早期阶段实际使用WAMS可以精确地确定发电机加载步骤。此外，在修复的最后阶段，统一不同岛屿的相角参考和提供线路激活优先级列表是WAMS的显著优点。以新英格兰39母线电力系统为例，对所提出的算法进行了验证。并将该方法应用于大型电力系统IEEE 118总线系统，验证了该方法在实际系统中的应用能力。
Online power system stability assessment during restoration has not been strongly addressed yet. The introduction of wide area measurement systems (WAMS), however, made it possible to monitor the stability online. This study technically presents a detailed analysis of stability during restoration using WAMS. The power system build-up strategy is used as the restoration approach, based on which the early and the last stages of restoration are to divide the power system into islands and interconnect them, respectively. In fact, the practical use of WAMS at the early stages of restoration provides precise determination of generators loading steps. Moreover, unification of phase angle references at different islands and presentation of tie line energising priority list are significant benefits of WAMS at the last stages of restoration. The New England 39-bus power system is used to demonstrate the proposed algorithm and verify the results. The proposed method is also applied on the IEEE 118-bus system as a large-scale power system to prove its capability in practical systems.