电气主接线图
摘要
本设计以变电站为研究对象。变电站不仅仅是电力系统的一个重要的组成部分，而且也是电厂和用户之间的枢纽。主电路电气配线的设计以及开发，要对整个变电站电气设备做出正确的选择，其中包括配电设备装置，继电保护和自动装置等设备。
在初步了解变电站的概念后，根据任务书上的要求，查阅相关的参考文献，进一步了解所需要做的事情。由线路和负载的相关参数，计算出相应的负荷，进行无功功率补偿。然后根据变电站的位置及出线方向来考虑，并对负荷进行数据分析，考虑安全性，经济性以及可靠性，确定10KV站以及电气主布线，之后通过负载计算和供给的范围，确定变压器的容量和台数以及型号，进行相关的短路电流计算。再根据设计要求选择断路器，隔离开关，变压器和保护装置的型号，最后还对相应的继电保护和防雷措施进行了简单的设计。
总而言之，一定要确保供电系统的安全和可靠性，在此基础上再考虑其经济性，从而完成变电所的设计。
关键词：主接线；数据分析；数据计算；变压器；可靠性
Abstract
The design of transformer substation as the research object. Substation is not only power system an important component, and is also a hub between the power plants and users. Main circuit's electricalwiring design and development, it is necessary to make the right choice of thewhole substation electrical equipment, including power distribution equipment, relay protection and automation device, equipment.
After a preliminary understanding of the concept of the substation, according to the requirements of the task book, refer to the relevant reference, to further understand the things that need to be done. The corresponding load is calculated by the parameters of the line and the load, and the reactive power compensation is carried out. After according to the substation location and outlet direction to consider, and the load for data analysis, consider the safety, economy and reliability, determine the 10kV station and main electricalwiring, after through the load calculation and supply determined transformer capacity and number of units, and types, related to the short-circuit current calculation.According to the design requirements of the circuit breaker, isolating switch, transformer and the protection of the device model, and finally to the corresponding protection and lightning protection measures for a simple design.
In short,we must ensure the safety and reliability of the power supply system, based on the consideration of its economy, so as to complete the design of substation.
Keywords: main connection; data analysis; calculation data; transformer; reliability
目录
摘要I
Abstract II
1绪论1
1.1设计背景1
1.2变电所的总体分析1
1.3设计思路1
2负荷计算3
2.1负荷分级及计算过程3
2.1.1负荷分级3
2.1.2负荷计算过程3
2.1.3 0.4kV侧负荷的计算4
3无功功率补偿7
3.1无功电源的组成及补偿装置的选择7
3.3无功补偿的确定7
4变电所位置和主变压器的选择9
4.1变电所位置确定的一般原则9
4.2变压器实际容量的计算9
4.3主变压器台数的确定以及型号的选择9
4.4主变压器的运行方式10
5主接线方式的选择11
5.1电气主接线设计的基本要求11
5.2主接线的设计11
6短路电流的计算12
6.1确定基准值12
6.2计算各元件电抗标幺值12
6.3 k-1故障点的短路电流计算13
6.4 k-2故障点的短路电流计算13
7变电所一次设备的选择与校验15
7.1变电所高压一次设备的介绍15
7.2一次设备的选择与校验的条件和项目15
7.3变电所10kV侧一次设备的选择17
7.4变电所380V低压一次设备的选择19
7.6变电所进出线的选择20
8继电保护及二次回路的选择23
8.1变电所二次回路方案的选择23
8.2继电保护装置23
8.2.1反时限过电流保护23
8.2.2电流速断保护24
8.3电力线路的继电保护设计25
9防雷保护的设计27
9.1避雷针的配置原则27
9.2防雷设计27
9.3确定最终的防雷方案28
结论与展望29
致谢30
参考文献31
防雷设计图
继电保护图
平面布置图
设计目录
设计所包含文件
设计字数统计
中英文摘要
