35/10kV总降压变电站一次系统设计

摘要：本次毕业设计的主要内容是对35/10kV总降压变电站的一次系统进行设计。通过本次毕业设计的要求，依据变电站的容量、地理位置、各个回路的参数等，确定此次设计的变电站的基本构造，首先通过对各个参数的计算，选择出合适的用电线、变压器的型号、变压器的台数等；之后用其余参数的准确计算确定出断路器、熔断器、电流互感器、电压互感器、隔离开关、无功补偿装置、避雷装置等。然后绘制出本次设计的主接线图和主变压器保护图，最后通过计算对本次的毕业设计进行校验。

在科技迅速发展的今天，数字化、网络化、自动化逐渐已经成为目前科技发展的主流。同样变电站对数字化、自动化的要求也逐渐的提高，变电站的自动化更成为各国科学界所努力的目标，对科技界起到了促进的作用。目前GIS变电站更成为了现在变电站的主要趋势，通过无人管理的自动化实现人力的节约，通过计算机对变电站进行精确的控制。

关键字：变电站；防雷保护；一次系统

A System Design of 35/10kV Total Voltage Reducing Substation

Abstract：The main content of this graduation project is to design a system of 35/10kV total voltage reducing substation. Through this graduation design requirements, according to the substation capacity, geographical location, different circuit parameters to determine the basic structure of the design of the substation. Firstly, through the calculation of various parameters, the appropriate wire, transformer types, transformer units such as; after the accurate calculation of the rest of the parameters to determine the circuit breaker, fuse, current transformer, voltage transformer, isolating switch, reactive power compensation device, lightning protection device. Then draw out the design of the main wiring diagram and the main transformer protection, and finally through the calculation of the graduation design of the check.

In today’s rapid development of science and technology, digital, networking, automation has become the mainstream of the development of science and technology. The requirement of digital and automation of substation is gradually increasing, and the automation of substation has become the goal of the scientific community in the world, and it plays a promoting role in the scientific community. At present, GIS substation has become the main trend of the substation. Through the automation of unmanned management to achieve the saving of human, through the computer to the substation for accurate control.

Keywords：Transformer substation, Lightning protection, Primary system