Albatsh Fadi M, Ahmad Shameem, Mekhilef Saad, Mokhlis Hazlie, Hassan M A
Power Electronics and Renewable Energy Research Laboratory (PEARL), Department of Electrical Engineering, University of Malaya, Kuala Lumpur, Malaysia.
Department of Electrical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia.
PLoS One. 2015 Apr 15;10(4):e0123802. doi: 10.1371/journal.pone.0123802. eCollection 2015.
This study examines a new approach to selecting the locations of unified power flow controllers (UPFCs) in power system networks based on a dynamic analysis of voltage stability. Power system voltage stability indices (VSIs) including the line stability index (LQP), the voltage collapse proximity indicator (VCPI), and the line stability index (Lmn) are employed to identify the most suitable locations in the system for UPFCs. In this study, the locations of the UPFCs are identified by dynamically varying the loads across all of the load buses to represent actual power system conditions. Simulations were conducted in a power system computer-aided design (PSCAD) software using the IEEE 14-bus and 39- bus benchmark power system models. The simulation results demonstrate the effectiveness of the proposed method. When the UPFCs are placed in the locations obtained with the new approach, the voltage stability improves. A comparison of the steady-state VSIs resulting from the UPFCs placed in the locations obtained with the new approach and with particle swarm optimization (PSO) and differential evolution (DE), which are static methods, is presented. In all cases, the UPFC locations given by the proposed approach result in better voltage stability than those obtained with the other approaches.
本研究基于对电压稳定性的动态分析，探讨了一种在电力系统网络中选择统一潮流控制器（UPFC）位置的新方法。采用电力系统电压稳定指标（VSI），包括线路稳定指标（LQP）、电压崩溃接近指标（VCPI）和线路稳定指标（Lmn），来确定系统中最适合安装UPFC的位置。在本研究中，通过动态改变所有负荷节点的负荷来确定UPFC的位置，以代表实际电力系统情况。使用IEEE 14节点和39节点基准电力系统模型，在电力系统计算机辅助设计（PSCAD）软件中进行了仿真。仿真结果证明了所提方法的有效性。当将UPFC安装在通过新方法获得的位置时，电压稳定性得到改善。给出了将UPFC安装在通过新方法获得的位置以及通过粒子群优化（PSO）和差分进化（DE）这两种静态方法获得的位置时，稳态VSI的比较。在所有情况下，所提方法给出的UPFC位置比其他方法获得的位置具有更好的电压稳定性。
