1、 目 录摘 要IAbstractII1绪 论1 1.1选题背景和意义1 1.2变电站发展概述1 1.3设计原始资料1 1.3.1保护2 1.3.2其它原始资料2 1.3.3负荷数据22 变电站电气主接线设计及主变压器的选择3 2.1 主接线的设计原则和要求3 2.1.1 主接线的设计原则3 2.1.2 主接线设计的基本要求4 2.2 主接线的设计5 2.2.1 设计步骤5 2.2.2 初步方案设计5 2.2.3 最优方案确定5 2.3无功补偿设计6 2.3.1 无功补偿的原则与基本要求6 2.3.2 补偿装置选择及容量确定6 2.4 主变压器的选择7 2.4.1 主变压器台数的选择8 2.4.
2、2 主变压器型式的选择8 2.4.3 主变压器容量的选择8 2.4.4 主变压器型号的选择9 2.5站用变压器的选择11 2.5.1 站用变压器的选择的基本原则11 2.5.2 站用变压器型号的选择113短路电流计算11 3.1 短路计算的目的、规定与步骤11 3.1.1 短路电流计算的目的11 3.1.2 短路计算的一般规定12 3.1.3 计算步骤12 3.2 变压器的参数计算及短路点的确定12 3.2.1 变压器参数的计算12 3.2.2 短路点的确定13 3.3 各短路点的短路计算13 3.3.1 短路点d-1的短路计算(110KV母线)13 3.3.2 短路点d-2的短路计算(35K
3、V母线)14 3.3.3 短路点d-3的短路计算(10KV母线)14 3.3.4 短路点d-4的短路计算15 3.4 绘制短路电流计算结果表154 电气设备选择与校验15 4.1 电气设备选择的一般规定15 4.1.1 一般原则15 4.1.2 有关的几项规定16 4.2 各回路持续工作电流的计算16 4.3 高压电气设备选择18 4.3.1 断路器的选择与校验18 4.3.2节隔离开关的选择及校验20 4.4电流互感器的选择及校验22 4.4.1 110KV进线电流互感器的选择及校验23 4.4.2 变压器110KV侧电流互感器的选择及校验23 4.4.3 35KV出线电流互感器的选择及校验
4、24 4.4.4 变压器35KV电流互感器的选择及校验25 4.4.5 10KV出线电流互感器的选择及校验25 4.4.6 变压器10KV侧电流互感器的选择及校验26 4.5 电压互感器的选择26 4.5.1 110KV母线电压互感器的选择27 4.5.2 35KV母线电压互感器的选择27 4.5.3 10KV电压互感器的选择27 4.6避雷器的选择及检验27 4.6.1 110KV母线接避雷器的选择及校验28 4.6.2 35KV母线接避雷器的选择及校验28 4.6.3 10KV母线接避雷器的选择及校验29 4.7母线及电缆的选择及校验29 4.7.1 110KV母线的选择及校验29 4.7
5、.2 35KV母线的选择及校验30 4.7.3 10KV母线的选择及校验31 4.7.4 10KV电缆的选择及校验32 4.8熔断器的选择33参考文献34致谢35iiContentsAbstract1Introduction1 1.1Background and significance1 1.2Substation Development Overview1 1.3Design Sourcebook1 1.3.1Protection2 1.3.2Other raw materials2 1.3.3Load Data22 Choose substation Electric main wiri
6、ng design and main transformer3 2.1 Design principles and requirements of the main terminal3 2.1.1 Design Principles main connection3 2.1.2 The basic requirements for the design of the main terminal4 2.2 Main wiring design5 2.2.1 Design Steps5 2.2.2 Preliminary Design5 2.2.3 Determine the optimal so
7、lution5 2.3Reactive Power Compensation Design6 2.3.1 Reactive power compensation principles and basic requirements6 2.3.2 Compensation device selection and capacity determination6 2.4 Select the main transformer7 2.4.1 Select the number of main transformer station8 2.4.2 Transformer Type Selection8
8、2.4.3 Main transformer capacity of choice8 2.4.4 Transformer models Selection9 2.5Select the station transformers11 2.5.1 The basic principles of substation transformer selection11 2.5.2 Substation transformer models Selection113Short circuit calculation11 3.1 Short circuit calculation purpose, regu
9、lations and procedures11 3.1.1 The purpose of the short-circuit current calculation 11 3.1.2 general provisions of Short circuit calculation 12 3.1.3 Calculating step12 3.2 Parameter calculation of transformer and short-circuit points12 3.2.1 Calculation of Transformer Parameters12 3.2.2 The determi
10、nation of short-circuit point 13 3.3 Calculate the short-circuit Short Point13 3.3.1 Short circuit d-1 short-circuit calculations (110KV bus)13 3.3.2 Short circuit calculation of short-circuit point d - 2 (35 kv bus )14 3.3.3 The short circuit calculation of the short-circuit point d - 3 (10 kv bus
11、)14 3.3.4 Short-circuit point d - 4 of short circuit calculation15 3.4 Draw short-circuit current calculation results table154 Electrical equipment selection and verification15 4.1 General provisions selection of electrical equipment15 4.1.1 General principle15 4.1.2 Several provisions of the releva
12、nt16 4.2 Calculate the loop continuous operating current16 4.3 High-voltage electrical equipment selection18 4.3.1 Breaker selection and validation18 4.3.2 Disconnectors Selection and verification20 4.4CT Selection and verification22 4.4.1 110KV line current transformer selection and verification23
13、4.4.2 110KV transformer side current transformer selection and verification23 4.4.3 35KV current transformer outlet selection and verification24 4.4.4 35KV transformer current transformer selection and verification25 4.4.510KV current transformer outlet selection and verification25 4.4.6 10KV transformer side current transformer selection and verification26 4.5 Voltage transformer selection26 4.5.1 110KV busbar voltage transformer selection27 4.5.2 35KV busbar voltage transformer selection27 4.5.3 10KV voltage transformer selection27 4.6Arrester selection and inspectio
