Contingency Analysis of IEEE 9 Bus System
Contingency Analysis of IEEE 9 Bus System
复制标题
IEEE 9总线系统的应急分析
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
N. Aarthi
中科院分区：
文献类型：
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作者：
M. Shekar;N. Aarthi
应急分析对电力系统安全评估和市场运行具有重要意义。本文初步研究了采用传统同步发电机的ieee9母线系统，采用变压器、传输线和发电机分别断开的方法进行了偶然性分析，得出了电压性能指标。对于ieee9总线系统，用相同额定的基于DFIG的风电场替换一台传统发电机，重复同样的过程。对这两种情况进行了比较，并给出了结果。利用Digsilent power factory进行仿真，并利用电压性能指标对停电的严重程度进行识别和排序。结果表明，即使使用DFIG，其严重性仍然存在，但如果DFIG放置在最佳位置，系统在突发情况下表现出更好的性能，因为它减少了惯性，增加了同步扭矩，并且放置在靠近负载的位置。
Contingency analysis is important for power system security assessment & market operations. In this paper, initially IEEE 9 bus system with conventional synchronous generator is taken for study and contingency analysis is done by disconnecting transformer, transmission line and generator, one at a time and voltages performance indices are found out. Same procedure is repeated for IEEE 9 bus system replacing one conventional generator with DFIG based wind farm of same rating. Comparison is done between these two cases and results are presented. Simulation is done using Digsilent power factory and the voltage performance index is used to identify and rank the severity of outages. Results show that severity still persists even with DFIG, but if DFIG is optimally placed, the system shows better performance in case of contingency, because of its reduction in inertia, increase in synchronizing torque and its placement close to load.