Small area land-use analysis in fuzzy spatial load forecasting part one principle 模糊推理新方法和小区用地分析原理
Firstly, the content and the meaning of the load forecasting are introduced in the paper . the theory and models of spatial load forecasting algorithm are also studied in details 首先介绍了配电网负荷预报的内容和意义,详细研究了空间负荷预测的理论与模型。
spatial load forecasting spatial load forecasting ( load distribution forecasting, too ) is the foundation of distribution network development planning and distribution automation 空间负荷预测空间负荷预测(spatialloadforecasting)(又称负荷分布预测)是配电网发展规划和配网自动化规划的基础。
Spatial load forecasting spatial load forecasting ( load distribution forecasting, too ) is the foundation of distribution network development planning and distribution automation 空间负荷预测空间负荷预测(spatialloadforecasting)(又称负荷分布预测)是配电网发展规划和配网自动化规划的基础。
Then this algorithm is applied on the graphic information systems . during the load forecasting, some steps of the algorithm are improved . the sample shows that the spatial load forecasting algorithm is feasible and superior 然后结合地理信息系统平台,采用空间负荷预测方法进行配电网负荷预测,并且在预测过程中改进了该方法的某些步骤。
The quantity and its location of loads should be forecasted in the distribution network planning, which also means loads spatial distribution . the nodes and lines planning could be done only after determine the spatial loads distribution correctly 在配电网规划中,不仅要预测负荷的量,还要预测负荷的位置,即负荷的空间分布,只有在确定负荷空间分布的基础上,才能进行配电网的布点和布线规划。
At present, there are commonly there kinds of method for spatial load forecasting . the first is load density method, which can give the quantity of the unit according to density of classified load and the constitution of sub-districts " area 目前,国内外常用的空间负荷预测方法主要有以下三类:第一、负荷密度法:该方法是通过预测分类负荷的负荷密度,根据小区面积构成,计算出各个小区的负荷值。
In this paper , a novel fuzzy optimization model and algorithm to optimize the locations , sizes and service areas of mv / lv distribution transformers in urban distribution network planning which can consider the imprecision and possibility of spatial load, the voltage level constraints and the cost of objective function is presented 给出了考虑负荷、供电电压水平约束和目标函数最小费用的不精细性的城市电网中压配电变压器位置、容量和供电范围的模糊优化规划模型及算法。
On the basis, present distribution network planning methods have been studied first, and then on the gis platform the following aspects including spatial load forecasting distribution network planning based gis and tabu search and distribution network planning software package gis based are further studied 在此基础上,对现有配电网规划方法进行了学习,又在gis平台上对空间负荷预测、基于gis和tabu搜索的配电网网架优化、基于gis的配电网规划软件开发做了较为深入地研究。
The distribution gis data management methods and its application in distribution running are systematically researched, which compose distribution gis network topology analysis ( nta ) and optimal rush-maintain path ( orp ), and distribution planning, which composes distribution spatial load forecasting ( slf ) : ( 1 ) with systematic analysis on the relationship between spatial data model and spatial data structure, the distribution feature and the two common gis data models are analyzed, which are vector and raster data models . then the conceptual and logic data models of distribution gis are designed . the spatial data storage structure is given by using vector method, and their detailed data management methods are proposed (4)将gis的空间信息分析功能应用于配网空间负荷预测(saptialloadforecasting,slf)的研究:综合利用灰色理论及遗传规划的优点,提出了一种根据馈线的历史峰值负荷进行外推的组合slf法:首先采用负荷转移耦合法来修正负荷历史,消除由于负荷转移引起的误差;然后根据实际馈线路径和配网gis图形分层,运用图层叠加分析得到馈线的实际供电范围;接着采用灰色关联度聚类方法对馈线负荷增长曲线进行聚类分析;最后采用遗传规划来对灰色聚类结果进行符号回归,分别得到每一类曲线的最佳拟合曲线形式。