开Y-开Δ变压器相序调整的蚁群优化方法及收敛性研究  

ACS-Based Algorithm and its Convergence for Open Y-Open Delta Transformer's Phase Sequence Adjustment

作　　者：罗中良[1] 易明珠[2] 唐华[3] 李先祥[1] 

机构地区：[1]佛山科学技术学院电气工程及自动化系,广东佛山528000 [2]中山大学岭南学院,广东广州510275 [3]华南师范大学南海学院,广东佛山528225

出　　处：《中山大学学报（自然科学版）》2007年第2期27-31,共5页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：广东省自然科学基金资助项目(06029437)

摘　　要：在配电系统中,相序不平衡是引起线路损失和接地保护跳脱的主要原因之一。开Y-开Δ变压器(open Y-open delta,OYOD)能大幅度减小变压器成本而同时供应三相与单相负载,但存在严重的相序不平衡问题。针对OYOD变压器相序调整是一个组合非线性及不能微分目标函数的最优化问题,提出用蚁群算法来求解OYOD变压器的相序调整问题,以提高负载平衡能力,同时提出一种变信息素挥发系数的方法以提高算法解的质量和收敛速度。经测试结果显示,所提出的方法能对OYOD变压器相序调整提出一个最佳的解决方法。Phase unbalance is one of the prime reasons to cause extra line lose and ground current relay trip in distribution systems. The open Y-open delta transformer can serve as both three-phase and single-phase loads and then can obtain more economical for transformer cost management, but it also achieves the severe phase unbalance problem. The formulation of OYOD transformer＇s phase sequence adjustment is a combinatorial optimization problem with non-linear and non-differential objective function. A cooperative agent algorithm, the ant colony system for OYOD transformer＇s phase sequence adjustment is proposed. In the algorithms, global searching and convergence abilities are improved by changing the pheromone trails evaporation parameters. Test results shown that the proposed algorithm can offer an optimum solution for OYOD transformer＇s phase sequence adjustment.

关 键 词：开Y-开△变压器 相序调整 蚁群系统 

分 类 号：TN216[电子电信—物理电子学]