率比较高 绝大多数城市的电缆化率很低 即使是上海 市区的电缆化率也只有 35 北京中心城区的电缆化率也不到 40 中国城市电缆化规划开始于 90 年
代初 多始于 1995 年前后 在 1997 年到 2000 年达到高峰期 1/2 到 1/3 的电缆 建设于这一阶段 平均每年每城市增长超过 100 公里 这主要是由于城市电网改 造的巨大推动作用 因此 我国城市架空线路的入地改造还需要一个长期艰苦的过程 但是随着 经济发展的要求 以及科学技术的不断进步 城市电网 及其他种类的架空线路 的入地改造已提上日程[1~3]
留有一定裕度 最后
按照顺序安排道路在不同的年限中改造 电缆
对架空线路入地改造具体施工过程中的敷设方式
型号选择 载流量修正 以及可能出现的问题 进行规划与分析 尤 其 将优先级权系数法应用于电力电缆的选型过程 通过对待选电缆 的各个部分进行分析比较 求出体现其整体匹配适应程度的优先级权 系数值 依据定量结果选取最优的电缆 避免了传统方法的不确定性 使结果一目了然 具有更强的说服力
关键词 设过程
架空线路 入地改造 顺序规划 资金约束 时间规划 敷
上海交通大学硕士学位论文
架空线路入地改造控制规划的分析与研究
THE ANALYSIS OF UNDERLAY CONTROL AND PLAN OF RECONSTRUCTING OVERHEAD TRANSMISSION LINES ABSTRACT On the basis of the underlay control and plan of reconstructing overhead transmission lines, this dissertation sets forth a systematic, integrated and feasible project, which is very suitable for underlay reconstructing of massive overhead transmission lines. It is proved to be effective and advanced by the practical project, the overhead transmission lines underlay scheme of Pudong New Area. Firstly, the underlay sequence of all kinds of overhead transmission lines, including electrical power overhead transmission lines, and the others, is confirmed. From the macro viewpoint, taking road as unit, the lines belonging to the same road are defined as an object. From the micro viewpoint, according to the degree of importance and priority of the objects, a scheme is laid out in detail with the priority weights algorithm or the clustering algorithm. After developed the multi-objective weights combination assigning method, priority weights algorithm is worked out to estimate multi-objects priority degree. Each essential factor of the reconstructing will be optimized and quantified roundly. The numerical results can avoid the subjective decision-making and be more direct and flexible. Based on the degree of importance and priority, clustering algorithm helps to attain a series of clusters. The objects in the same cluster are similar, which should be arranged to reconstruct during the same period. While on the contrary, the objects in different clusters should be reconstructed at different times in term of the sequence. Weighted Euclid distance is adopted to judge the constringency of
造 避免人为决策的主观性 并且更加直观灵活 聚类分析法将客体 分成一系列类 每类中的客体具有类似的重要优先程度 应安排同期 改造 而不同的类则应按顺序分别安排改造 采用加权系数欧几里德 距离衡量准则函数的收敛 并对异常数据进行分析与挖掘 使得计算 结果更加准确 接着
介绍了系数分析法和 BP 神经网络法两种资金估算方法
上海交通大学 硕士学位论文 架空线路入地改造控制规划的分析与研究 姓名：沈阅 申请学位级别：硕士 专业：电力系统及其自动化 指导教师：程浩忠 20040101
上海交通大学硕士学位论文
架空线路入地改造控制规划的分析与研究
架空线路入地改造控制规划的分析与研究
摘 要
本文对架空线路入地改造的控制规划进行了研究
KEY WORDS: overhead transmission line, underlay reconstructing, sequence plan, fund restriction, time plan, laying process
上海交通大学硕士学位论文
架空线路入地改造控制规划的分析与研究
上海交通大学硕士学位论文
架空线路入地改造控制规划的分析与研究
criterion function, and the abnormal data are found out to make the result more accurate. Secondly, coefficient analysis method and BP NN method are introduced to estimate the fund budget. Some effective solving means and raising money advices are summarized referring to the experiences and problems of some other cities. The dynamic time effect of fund is applied to achieve the dynamic compensatory fund method, which ensures the uniform reconstructing. Under the restriction of fund and plan, the time scheme is established. Assuming the annual average fund is constant with a little margin, roads are arranged to reconstruct in different years. Finally, some possible problems, such as the laying mode, cable type selecting, current carrying capacity, and so on, are discussed. Especially, priority weights algorithm is applied to select the power cable type. Each part of the cables should be analyzed to calculate the priority weight, which at last can show the integral matching and adaptive degree. Based on the quantificational results, the most suitable cable type will be found. It can avoid the uncertainty of the traditional method and ensure the results to be more immediate and credible.
国外一些发达国家在电缆供电方面起步比较早 城市电缆化率很高 欧美各 国主要城市都采用地下电缆供电 其电缆化率几乎 100 平均电缆化率达到了 40 港的电缆化率也达到 95 欧洲 包括乡村 的 我国香
以上 主要城市的电缆化率更是达到了 100 以上
即使是日本这样一个原来大量架设架空线路的
国家 近年来也转向大量使用地下电缆供电 日本东京中心城区已经基本实现了 全部电缆化 然而 我国在电缆供电方面起步比较晚 与欧美国家相比差距很大 我国城 市的平均地下电缆化率只有 8 我国只有在深位论文
架空线路入地改造控制规划的分析与研究
1.2 架空线路入地改造的意义
城市架空线路的不断增加 特别是种类繁多的线路合杆在电力架空线路上 与城市的发展很不协
使原本象征城市动力源泉的电力架空线路显得杂乱不堪