摘 要
本文根据负荷资料，待设计变电所的地理位置。据已有电厂的供电情况。做出功率
平衡。通过技术经济综合比较，确定电网供电电压、电网接线方式及导线截面。进行电
网功率分布及电压计算，评定调压要求，选定调压方案。评定电网接线方案。
根据给出的负荷情况及输电距离确定网络的电压等级为 110kV，再根据变电站、发电厂的地理位置，选出 4种结线方案进行粗略的比较，比较后从中选出 2种方案进行精细的方案比较，最后选出一种技术、经济上最优的方案，随之可以确定发电厂、变电站的结线方式和运行方式。然后根据所选的结线方式和运行方式进行潮流计算和调压计算，直至调压方式、范围合符要求，最后统计物资用量，进行经济指标计算。
关键词：区域电网；变电所；接线方案
Abstract
According to the load data, the geographical location of the substation to be designed. According to the existing power plants supply situation. Make the power balance. Comprehensive comparison of the technical and economic, to determine the power grid voltage, grid wiring and wire cross-section. Grid power distribution and voltage calculated to assess the regulator requirements, selected regulator program. Assessment grid wiring scheme.
Is determined according to the given load and transmission distance network voltage levels of 110kV, again elected junction line program based on the geographical location of the substations, power plants, a rough comparison, compare two kinds of programs to choose fine program comparison, last elected a technology economically optimal solutions, along with power plants, substations tie line mode and operation mode can be determined. Selected junction line and run and then calculate the flow calculation and the pressure regulator until the regulator of ways, ranging meet the requirements, the final amount of statistical material, calculate the economic indicators.
Keywords: regional grid; substation; wiring scheme
目 录
摘 要 1
Abstract 2
第一章 设计题目和原始资料 1
1-1 概述 1
1-2 原始资料 1
第二章 负荷合理性校验，功率平衡校验及确定运行方式 5
2-1 负荷合理性校验 5
2-2 功率平衡校验 5
2-3 确定发电厂运行方式 6
第三章 确定网络结线方案和电压等级 7
3-1 网络电压等级的确定 7
3-2 网络结线方案初步比较 7
3-3 网络结线方案精确比较 8
第四章 确定发电厂、变电所的结线方式 14
4-1 选择发电厂主接线 14
4-2 确定变电所结线方式 15
4-3 确定变压器型号、台数及容量 16
第五章 调压方式的选择和计算 18
5-1 系统参数计算 18
5-2 各点的计算负荷和功率损耗计算及结果 19
5-3 作出网络的功率分配图 21
5-4网络电压损耗计算和变压器抽头选择 21
5-5 调压计算结果分析 26
第六章 总结 27
致 谢 28
附图 29
