220kV变电站设计中英文摘要

2×180MVA，220kV变电站电气主接线、220kV与10kV配电装置及主变继电保护

设计

摘要

电力的发现和使用对当代社会的发展、国民经济等起到了至关重要的影响，随着科学技术的发展，电网的建设也越来越先进。变电站是电网建设中最重要的一个环节，起着电能传递与电压转换的作用。随着时代发展，变电站的改进越来越迅速，由最先的传统化变电站和电压等级不高，到现在的GIS站、数字化变电站，以及高压变电站等，变电站的发展越来越先进，对变电站的技术要求也越来越高，但传统变电站仍在电网中占据了一席之地。

本次毕业设计的主要工作是完成一个包括2台180MVA主变压器的220kV传统变电站电气初步设计。设计的主要目的在于了解变电站设计的发展历程和一般设计方法在设计中深化已经掌握的专业课程，并学习变电站电气初步设计的相关过程和规定，从而做到理论实际相结合

本次设计的工作内容主要包括，先根据设计要求的出线回路数等确定变电站的主接线方案，然后查阅相关文献和材料后确定主变型号，再根据选定的变压器参数计算并确定变电站各个电压等级的短路电流，随后选择变电站220kV和10kV侧所需要的电气设备和母线，然后根据所选设备对变电站进行合理的布置，最后对主变压器进行保护设计。

本次设计的主要成果是一座220kV出线8回，110kV出线12回，10kV出线16回的220kV变电站电气初步设计以及主变的保护配置。该变电站屋外、屋内配电装置的主接线形式分别采用了双母线和单母线分段接线；220kV配电装置采用改进半高型布置，10kV

采用屋内双列开关柜布置；变电站的主变保护采用了纵联差动保护和瓦斯保护等。

关键词：变电站设计，电气主接线，短路电流，设备选择，配电装置

Primary Design of Main Wiring, 220kV and 10kV Distribution Equipment and

Transformer Relay Protection for a 2×180MVA, 220kV Substation

Abstract

The discovery and use of electric power has a very important influence on the development of modern society and the national economy. China's energy resources distribution is not uniform. Therefore, power transmission is crucial, grid system is very complicated, in order to ensure the transmission quality and need to people continue to improve power system. With the development of science and technology, the construction of the network is becoming more and more advanced, substation is a part of the power grid construction is the most important, plays a role of conversion of electric energy, the substation improved more and more rapidly. By the first traditional substation and voltage level is not high, to the current GIS station, digital substation, and high voltage transformer substations and other, substation is becoming more and more advanced, technology of substation request is also getting higher and higher.

The objective of this design is the conventional 220kV substation design, including 2 sets of 180MVA transformer, through this design. The purpose is to understand at all times and in all over the world of substation design development process and design method. Learning design of the relevant procedures and regulations, so as to achieve the theory of the combination of the actual design of

a suitable substation.

The main research contents of this design is the first according to the design requirements of outlet circuit number and confirm the substation main wiring scheme and access relevant documents and materials of main transformer model is established, and various voltage levels in the short circuit current is determined according to the parameters of the transformer model, and then refer to the related process selection of 220kV substation and 10kV side of the electrical equipment and bus, and reasonable layout of substation based on the selected device. Finally, the main transformer of design protection.

The results of this design is to design a 220kV outlet 8 back, 110kV outlet 12 back, 10kV outlet 16 back to the 220kV substation, the substation is the main connection form is the double busbar double busbar single busbar connection. 220kV using the improved semi 110kV, adopting the double switch cabinet layout. The main transformer protection using differential protection and gas protection.

Key words: substation, main electrical wiring, short circuit current, equipment selection, power distribution equipment