论文总字数：18678字

摘 要

当今我国的电力产业发展十分迅速，许多电力系统的容量正在增大，各大电网的区域也在不断扩充。电力产业迅猛发展的同时，对于电力系统的保护措施显得越来越重要。继电保护装置在各种电力系统和各大电网中得到了较为广泛的使用，是电力系统设备安全且可靠运行的最基本且可靠的保证。

继电保护主要由二次设备提供。二次设备指的是所有对一次设备的运行情况进行相应的监控，调整和保护以及为运行维护人员提供相应的运行情况或产生信号所需的低压电器设备。二次回路是由二次设备相互连接工作的回路，实现对一次设备的监控，调整和保护。

对于二次回路的设计，需要满足相应的设计规范和规程。在设计二次回路时，回路中各种元件作用以及它们的特点需要满足对应的功能技术要求。

ABB断路器可以为快速恢复正常运行创造必要的条件, 并提供优秀的的处理方案，同时也能够为其提供最好的电气保护。基于ABB断路器设计的线路保护的二次回路，可以有效地保护电力系统的安全和稳定性。

本次毕业设计采用的110kV系统一次接线为双母线接线，设专用母联。本次设计的是110kV线路保护二次线。

本次毕业设计将分六个部分进行探讨分析；第一个部分是绪论，第二个部分是有关一次设备的选型以及介绍，第三个部分是有关二次设备的选型及介绍，第四个部分是二次回路的设计以及相关研究，，第五个部分是小结，第六个部分是参考文献。

关键词：继电保护；ABB断路器；线路保护；二次回路

Secondary circuit design of circuit protection based on ABB circuit breaker

Abstract

Nowadays, China's electric power industry is developing rapidly. The capacity of many electric power systems is increasing. With the rapid development of the electric power industry, the protection measures for the electric power system are becoming more and more important. Relay protection device has been widely used in various power systems and major power grids. It is the most basic and reliable guarantee for safe and reliable operation of power system equipment.

Relay protection is mainly provided by secondary equipment. Secondary equipment refers to all low-voltage electrical equipment that is required to monitor, adjust and protect the operation of primary equipment and to provide corresponding operation conditions or generate signals for operation and maintenance personnel. Secondary circuit is a circuit connected by secondary devices to realize the monitoring, adjustment and protection of primary devices.

For the design of secondary loop, it is necessary to meet the corresponding design specifications and procedures. When designing the secondary circuit, the functions and characteristics of various components in the circuit should meet the corresponding functional and technical requirements.

ABB circuit breakers provide the necessary conditions for a quick return to normal operation and provide excellent processing solutions while also providing the best electrical protection. The secondary circuit of circuit protection based on ABB circuit breaker design can effectively protect the safety and stability of power system.

The 110kV system primary wiring adopted in this graduation project is double bus wiring with special busbar. This design is 110kV line protection secondary line.

This graduation project will be divided into six parts to discuss and analyze; The first part is the introduction, the second part is about the selection and introduction of primary equipment, the third part is about the selection and introduction of secondary equipment, the fourth part is the design of secondary circuit and related research, the fifth part is a summary, the sixth part is a reference.

Key words: Relay Protection, ABB Circuit Breaker,Line protection, Secondary Circuit

目 录

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