摘要
为改善农村煤改电地区设备利用效率低的问题,并兼顾供电可靠性,提出一种适应季节性负荷的配电变压器与台区线路优化规划方法。主要思路是建立配变间低压联络线,根据季节性负荷特点,通过联络线开关状态变化,转换运行方式,使部分配变低负荷季节退出运行。以综合费用最小为目标构建配电变压器网络双层规划模型,上层采用Voronoi法规划配电变压器,下层采用Prim算法规划低压供电线路,并结合遗传算法进行优化求解。最后,通过对典型供电区域进行配变规划验证了该方法的可行性,并且能够降低配变损耗,提高供电的可靠性和经济性。
Taking into account power supply reliability,this paper proposed an optimal planning method adapting to seasonal load for distribution transformer network in order to improve equipment utilization efficiency in rural coal-to-electricity conversion areas.The main idea was firstly to establish lowvoltage tie-line between distribution transformers,and according to seasonal load characteristics,some distribution transformers could withdraw from operation in low-load season by switching the tie-line operation state and mode.In this method,a bi-level programming model of distribution transformer network was constructed to minimize the overall cost.Voronoi method was used to plan the distribution transformer at the upper level;Prim algorithm was used to plan the low-voltage power supply line at the lower level,and genetic algorithm was used to seek the optimal solution.Finally,the feasibility of the method was verified by the distribution planning of typical power supply areas,and it can reduce the distribution transformer loss and improve the reliability and economy of power supply.
作者
刘晨苗
刘宗歧
刘明华
刘文霞
全少理
LIU Chenmiao;LIU Zongqi;LIU Minghua;LIU Wenxia;QUAN Shaoli(State Key Laboratory of Alternate Electrical Power System With Renewable Energy Sources(North China Electric Power University),Changping District,Beijing 102206,China;State Grid Henan Electric Power Company Economic and Technological Research Institute,Zhengzhou 450052,Henan Province,China)
出处
《现代电力》
北大核心
2020年第3期255-262,共8页
Modern Electric Power
关键词
季节性负荷
配电变压器网络
综合费用
双层优化
规划方法
seasonal load
distribution transformer network
the overall cost
bi-level optimization
planning method
