电测与仪表
電測與儀錶
전측여의표
ELECTRICAL MEASUREMENT & INSTRUMENTATION
2015年
15期
108-112
,共5页
王秀云%赵宇%马万明%王岩松%李书金
王秀雲%趙宇%馬萬明%王巖鬆%李書金
왕수운%조우%마만명%왕암송%리서금
电力系统%无功优化%粒子群算法%改进
電力繫統%無功優化%粒子群算法%改進
전력계통%무공우화%입자군산법%개진
power system%reactive power optimization%particle swarm algorithm%improve
建立了无功优化的数学模型,针对粒子群算法易陷入局部最优解、收敛精度差的缺点,将改进粒子群优化算法应用到电力系统无功优化中。对粒子群的速度公式进行了改进,并在算法中引入反正切惯性权重和阈值来增强搜索全局最优解的能力。通过对IEEE30节点的算例仿真,证明改进后的粒子群算法在电力系统无功优化问题上具有一定的可行性。与PSO的结果对比表明该算法在一定程度上提高了计算的精度。
建立瞭無功優化的數學模型,針對粒子群算法易陷入跼部最優解、收斂精度差的缺點,將改進粒子群優化算法應用到電力繫統無功優化中。對粒子群的速度公式進行瞭改進,併在算法中引入反正切慣性權重和閾值來增彊搜索全跼最優解的能力。通過對IEEE30節點的算例倣真,證明改進後的粒子群算法在電力繫統無功優化問題上具有一定的可行性。與PSO的結果對比錶明該算法在一定程度上提高瞭計算的精度。
건립료무공우화적수학모형,침대입자군산법역함입국부최우해、수렴정도차적결점,장개진입자군우화산법응용도전력계통무공우화중。대입자군적속도공식진행료개진,병재산법중인입반정절관성권중화역치래증강수색전국최우해적능력。통과대IEEE30절점적산례방진,증명개진후적입자군산법재전력계통무공우화문제상구유일정적가행성。여PSO적결과대비표명해산법재일정정도상제고료계산적정도。
This paper established a mathematical model of reactive power optimization .In view of the shortcomings of standard PSO that local optimum and poor convergence precision , this paper introduced an improved particle swarm optimization algorithm to the reactive power optimization of power system .The paper improved the speed formula of PSO and introduced arctangent inertia weight and threshold to enhance the ability to find the global optimal solution . Simulation results of IEEE 30-bus system show that the improved particle swarm algorithm for reactive power optimiza-tion problem is feasible .Comparing with the results of PSO , we can find that improved particle swarm optimization al-gorithm improve the calculation accuracy in a certain extent .