Islam Naz Niamul, Hannan M A, Shareef Hussain, Mohamed Azah, Salam M A
Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bnagi, Selangor, Malaysia.
Electrical and Electronic Engineering Program, Faculty of Engineering, Institut Teknologi Brunei (Engineering and Technology University), Jalan Tungku Link, Gadong BE1410, Brunei Darussalam.
ScientificWorldJournal. 2014;2014:549094. doi: 10.1155/2014/549094. Epub 2014 Apr 6.
Power oscillation damping controller is designed in linearized model with heuristic optimization techniques. Selection of the objective function is very crucial for damping controller design by optimization algorithms. In this research, comparative analysis has been carried out to evaluate the effectiveness of popular objective functions used in power system oscillation damping. Two-stage lead-lag damping controller by means of power system stabilizers is optimized using differential search algorithm for different objective functions. Linearized model simulations are performed to compare the dominant mode's performance and then the nonlinear model is continued to evaluate the damping performance over power system oscillations. All the simulations are conducted in two-area four-machine power system to bring a detailed analysis. Investigated results proved that multiobjective D-shaped function is an effective objective function in terms of moving unstable and lightly damped electromechanical modes into stable region. Thus, D-shape function ultimately improves overall system damping and concurrently enhances power system reliability.
采用启发式优化技术在线性化模型中设计了功率振荡阻尼控制器。目标函数的选择对于通过优化算法设计阻尼控制器至关重要。在本研究中，进行了对比分析，以评估电力系统振荡阻尼中常用目标函数的有效性。针对不同目标函数，采用差分搜索算法对基于电力系统稳定器的两阶段超前-滞后阻尼控制器进行了优化。进行线性化模型仿真以比较主导模式的性能，然后继续对非线性模型进行评估，以研究电力系统振荡时的阻尼性能。所有仿真均在两区域四机电力系统中进行，以进行详细分析。研究结果表明，多目标D形函数是一种有效的目标函数，它能将不稳定和弱阻尼机电模式转移到稳定区域。因此，D形函数最终提高了整个系统的阻尼，并同时增强了电力系统的可靠性。
