This study proposes a graphical user interface(GUI) based on an enhanced bacterial foraging optimization(EBFO) to find the optimal locations and sizing parameters of multi-type DFACTS in large-scale distribution syste...This study proposes a graphical user interface(GUI) based on an enhanced bacterial foraging optimization(EBFO) to find the optimal locations and sizing parameters of multi-type DFACTS in large-scale distribution systems.The proposed GUI based toolbox,allows the user to choose between single and multiple DFACTS allocations,followed by the type and number of them to be allocated.The EBFO is then applied to obtain optimal locations and ratings of the single and multiple DFACTS.This is found to be faster and provides more accurate results compared to the usual PSO and BFO.Results obtained with MATLAB/Simulink simulations are compared with PSO,BFO and enhanced BFO.It reveals that enhanced BFO shows quick convergence to reach the desired solution there by yielding superior solution quality.Simulation results concluded that the EBFO based multiple DFACTS allocation using DSSSC,APC and DSTATCOM is preferable to reduce power losses,improve load balancing and enhance voltage deviation index to 70%,38% and 132% respectively and also it can improve loading factor without additional power loss.展开更多
局部阴影情况下,光伏阵列功率-电压(P-U)特性曲线呈现多个极值点,传统的最大功率点跟踪(maximum power point tracking,MPPT)方法会失效。研究了粒子群优化算法(particle swarm optimization,PSO)在光伏阵列(photovoltaic array)多峰MPP...局部阴影情况下,光伏阵列功率-电压(P-U)特性曲线呈现多个极值点,传统的最大功率点跟踪(maximum power point tracking,MPPT)方法会失效。研究了粒子群优化算法(particle swarm optimization,PSO)在光伏阵列(photovoltaic array)多峰MPPT中的应用,该方法根据多峰P-U曲线的特性,提出将粒子初始位置分散定位在可能的峰值点电压处这一新思路,保证了粒子群算法不会陷入局部极值点且不会错过任何极值点。设置了粒子群算法的参数,同时提出有效的迭代终止策略,能够避免系统趋于稳定时的功率振荡。最后通过仿真验证了该算法在有、无阴影情况下均能够快速且准确地跟踪最大功率点,有效地提高了光伏阵列输出效率。展开更多
基金Project supported by Borujerd Branch,Islamic Azad University,Iran
文摘This study proposes a graphical user interface(GUI) based on an enhanced bacterial foraging optimization(EBFO) to find the optimal locations and sizing parameters of multi-type DFACTS in large-scale distribution systems.The proposed GUI based toolbox,allows the user to choose between single and multiple DFACTS allocations,followed by the type and number of them to be allocated.The EBFO is then applied to obtain optimal locations and ratings of the single and multiple DFACTS.This is found to be faster and provides more accurate results compared to the usual PSO and BFO.Results obtained with MATLAB/Simulink simulations are compared with PSO,BFO and enhanced BFO.It reveals that enhanced BFO shows quick convergence to reach the desired solution there by yielding superior solution quality.Simulation results concluded that the EBFO based multiple DFACTS allocation using DSSSC,APC and DSTATCOM is preferable to reduce power losses,improve load balancing and enhance voltage deviation index to 70%,38% and 132% respectively and also it can improve loading factor without additional power loss.
文摘局部阴影情况下,光伏阵列功率-电压(P-U)特性曲线呈现多个极值点,传统的最大功率点跟踪(maximum power point tracking,MPPT)方法会失效。研究了粒子群优化算法(particle swarm optimization,PSO)在光伏阵列(photovoltaic array)多峰MPPT中的应用,该方法根据多峰P-U曲线的特性,提出将粒子初始位置分散定位在可能的峰值点电压处这一新思路,保证了粒子群算法不会陷入局部极值点且不会错过任何极值点。设置了粒子群算法的参数,同时提出有效的迭代终止策略,能够避免系统趋于稳定时的功率振荡。最后通过仿真验证了该算法在有、无阴影情况下均能够快速且准确地跟踪最大功率点,有效地提高了光伏阵列输出效率。
