35KV降压变电站继电保护方案设计书论文.docVIP

某35KV降压变电站变压器继电保护的配置及整定计算 摘 要 本次毕业设计的题目是《某35kV降压变电站的主变保护设计》。根据设计的要求，在设计的过程中，用到了35kV降压变电站的绝大多数的基础理论和设计方案，因此在设计过程中侧重了知识系统化能力的培养。设计可分为几部分：设计方案的确定；系统负荷计算，短路电流的计算；主变压器继电保护的配置、整定及校验的确定。 通过本次设计，学习了设计的基本方法，巩固三年以来学过的知识，培养独立分析问题的能力，而且加深对变电站的全面了解。 关键词：ABSTRACT This graduation project topic is: A 35kV step-down transformer substation of main transformer protection design .According to the design request, the design process using a lot of knowledge, therefore how knowledge systematic became the key. If this design using the factory of the overwhelming majority of power supply of basic theory and design scheme, so in the design process emphasis on knowledge systematic ability. Design can be divided into several parts: load calculation and reactive power calculation and compensation, Substation position and form the choice, Main transformer substation sets and capacity and main wiring schemes choice; The calculation of short-circuit current, Once substation equipment choice and calibration, Substation high and low voltage circuit choice; The secondary circuit substation plan selection and relay protection setting, Lightning protection and grounding device is identified. Through this design, has studied the design essential method, since the consolidated four years have studied the knowledge, raises the independent analysis question ability, moreover deepens to the transformer substation comprehensive understanding. Key words: Load calculation Reactive power Short-circuit current Relay protection 目 录 摘 要…………………………………………………………………………………………1 Abstract………………………………………………………………………………2 第一章 绪论 ………………………………………………………………1 1.1继电保护的概述……………………………………………………………1 1.2继电保护装置具备的基本性能……………………………………………1 1.3 继电保护基本原理和保护装置的组成……………………………………1 1.4继电保护设计的目的和要求………………………………………………2 第二章 变电站继电保护和自动装置规划 …………………………………………3 2.1系统分析及继电保护要求…………………………………………………3 2.2本系统故障分析……………………………………………………………3 2.3 6.6kV线路继电保护装置………………………………………………… 4 2.4主变压器继电保护装置设置………………………………………………4 2.5 变