摘要
针对变电站优化规划这一城市电网规划工作中的重要环节,提出了一种基于加权Voronoi图的变电站规划方法,可以最终完成对变电站数量、容量、站址及供电范围的优化。该方法首先给出一种确定新建站容量组合的数学模型,并采用整数规划的优化技术同时得到其最优解和几组次优解。进而,根据是否含有已有站,分别给出利用常规Voronoi图法及综合考虑规划区域地形特点、区域面积和负荷分布情况的坐标几何方法产生初始站址。在此基础上,通过对Voronoi图进行加权来考虑负荷分布不均匀、各站额定容量和负载率不同对变电站供电范围的影响,进行变电站供电范围的整体优化,并确定新建站站址。实际算例表明,所提出的方法能够较好地满足变电站规划工作的要求。
Substation optimization planning plays an important role in urban network planning. This paper presents a novel method for substation planning based on the weighted Voronoi diagram, which can optimize the number, capacity, location, size and power supply area of substations. First, a mathematical model is proposed to obtain the capacity combination of the new substations, in which the optimum solution and sub-optimal solutions can be obtained, simultaneously by integer programming. Then, two methods are adopted to get the initial locations in terms of the existence of substations. One is the ordinary Voronoi diagram method and the other is the geometric method that takes the local topographic characteristics, the area of the planning district and load distribution into consideration. The uneven load distribution, the different rated capacities and the load rates of each substation can seriously affect the power supply area. In view of these effects, a substation optimization method based on the weighted Voronoi diagram is proposed to automatically decide the power supply area of each substation and optimize the locations of the new substations. Actual examples show that the method proposed is effective.
出处
《电力系统自动化》
EI
CSCD
北大核心
2007年第3期29-34,共6页
Automation of Electric Power Systems
关键词
变电站
优化规划
加权Voronoi图
交替定位分配法
初始站址
substation
optimization planning
weighted Voronoi diagram
alternative location allocation
initial location
