西南科技大学本科毕业论文（设计）
西南科技大学（本科）
毕业论文
题目：区域电力网规划设计
完成人： XXX 专业：电力系统及其自动化
完成时间： 2014年3月17日
西南科技大学教务处制
区域电力网规划设计
XXX
西南科技大学电力系统及其自动化专业
摘要：随着电力在国民经济发展中作用的日益突出，电网的建设与发展正扮演着越来越重要的角色。而电力系统规划在电网的建设与发展中占据极其重要的地位。电力系统规划主要由电力负荷预测、电源规划和电网规划构成。本文简明扼要地介绍了区域电网设计的过程与方法。区域电网的设计应根据用户负荷的相关资料，各变电站的地理位置和供电情况做出相应的功率平衡，确定各变电站变压器的主变容量与台数。根据已有的知识做出几种备选的方案，通过技术经济比较，主要从以下几个方面：(1) 按经济截面选择导线，按机械强度、载流量等情况校验导线，确定各段导线型号。(2) 对各种备选方案进行正常和故障情况下的电压和电能损耗的计算，本过程的计算主要采用手工算潮流电能的方法，得出各种正常及故障时的电压损耗情况，评定各种接线方案。(3) 从各种方案线路的损耗，线路投资，变电所的投资以及年运行费用等方面进行经济比较。综合以上三个方面确定最佳的方案，即为本设计的选定方案。最后对最优方案进行潮流计算，根据其结果对最优方案评定调压要求，选定调压方案。
关键词：潮流计算；调压方案；电网接线方案
Abstract:Along with development of national economy, the construction of electrical network is acting more and more important role. The power system plan has very important positions in the construction of power industry ,which is formed mainly by power load prediction , power plan and electric wire netting plan . This paper concisely has introduced method and the process of the distribution net design of regional power grid. It should be according to the related information of user loads, each distribution station site and the condition of power supply of existed power plants, making corresponding power balance, and then determine every distribution transformer capacity and number. According existing knowledge and experience, imagine two kinds alternative scheme, compare through technical economy from some following aspects, require best design: (1) select wire according to economic section, according to machinery strength, the current-carrying capacity etc, checking the wire model. (2) Various choose schemes must be carried out calculation for normal and fault condition by manual power flow calculation .Calculation result are normal and fault voltage wastage conditions, remarking various wiring schemes. (3) From the wastage, line investment, the electrical energy of various scheme lines, distribution system annual operation cost as well as investment of electrical place, carrying out economic comparison and prehensive above three aspects, that is sure the best scheme for the selection of the design schemes. Finally to the best scheme flow calculation, according to its results we should assess the surge plan requirements of the optimum scheme, and select the final surge plan.
Keywords:Power flow calculation; Voltage regulation scheme; Network connection program
目录
摘要 (1)
第1章绪论 (3)
第2章原始资料分析 (3)
2.1 原始资料 (3)
2.2 原始资料分析 (4)
第3章电力电量的平衡 (5)
3.1 系统功率平衡 (5)
3.2 用表格法进行电力电量平衡 (7)
第4章电网电压等级的确定和电网接线方案的初步选择 (10)
4.1 初拟方案 (10)
4.2 等价线长的计算 (13)
4.3 高压开关数量的计算 (14)
第五章电网接线方案的详细比较和确定 (14)
5.1 技术比较 (14)
5.2 经济比较 (18)
5.3 综合技术比较 (20)
5.4 电网接线方案的确定 (20)
第六章潮流分布与调压措施的选择 (21)
6.1 调相调压计算 (21)
6.2 最大负荷时的潮流计算（额定电压计算） (23)
第七章物资统计和运行特性计算 (26)
7.1 物资统计 (26)
7.2 运行特性计算 (26)
结论 (28)
参考文献 (29)
