110KV变电站电气(二次部分)设计_毕业设计说明书

河南理工大学毕业设计说明书

110KV变电站电气(二次部分)设计

摘要 ................................................................................................................................................... - 3 - 一、 设计任务书 ........................................................................................................................... - 5 - 二、 原始资料分析 ....................................................................................................................... - 6 - 三、 一次部分的相关设计 ........................................................................................................... - 7 - 一、 主变压器的选择极其参数 ............................................................................................... - 7 - 二、 电气主接线设计及其参数 ............................................................................................... - 8 - 四、 短路电流计算 ..................................................................................................................... - 10 - 一、 概述 ................................................................................................................................. - 10 - 二、 短路计算 ......................................................................................................................... - 12 - 三、 短路电流计算： ............................................................................................................. - 15 - 四、 短路电流计算结果 ......................................................................................................... - 18 - 五、 线路保护 ............................................................................................................................. - 18 - 一、 电力系统继电保护的作用 ................................................................................................ - 18 - 二 、输配电线保护 .................................................................................................................... - 22 - 三、 线路末端短路电流 ............................................................................................................ - 23 - 四、 线路保护整定 .................................................................................................................... - 24 - 六、 变压器的保护 ..................................................................................................................... - 25 - 一、 变压器装设的保护 ............................................................................................................ - 25 - 1、 变压器装设的保护种类 ................................................................................................. - 25 - 二、变压器保护的整定方法 ...................................................................................................... - 27 - 1、 变压器电流速断保护 ..................................................................................................... - 27 - 四、纵差保护的整定计算.......................................................................................................... - 31 - 五、 变压器过流保护整定计算 ................................................................................................ - 34 - 七、 备用电源自动投入装置 ..................................................................................................... - 36 - 八、 母线保护 ............................................................................................................................. - 39 - 一、 母线保护简介 .................................................................................................................... - 39 - 二、 母线的保护方式 ................................................................................................................ - 39 - 九、 防雷保护和接地设计 ......................................................................................................... - 41 - 一、 直击雷保护 ..................................................................................................................... - 41 - 二、 雷电侵入波保护 ............................................................................................................. - 42 -

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河南理工大学毕业设计说明书

致谢 ................................................................................................................................................. - 44 - 参考文献 ................................................................................................................................................ 1

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河南理工大学毕业设计说明书

摘要

本次设计任务旨在把大学所学各科专业知识的结合到一起，整体的了解电力系统等方面的知识。首先根据任务书上所给相关资料，分析负荷发展趋势。然后通过对拟建变电站的概况以及出线方面来考虑，并对负荷资料的分析，以及从安全、经济及可靠性等方面考虑，确定了110kV，35kV，10kV输电线路及母线的主接线，然后又通过负荷计算及供电范围确定了主变压器台数及型号。

最后，根据短路计算结果，确定线路保护、变压器保护、母线保护、防雷保护的保护方案，根据保护方案对保护进行整定计算，确定设计之后再对保护的总体进行分析论证，检验二次回路的设计是否合格，从而完成了110kV电气二次部分的设计。

关键词：变电站 继电保护 保护整定 检验计算

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河南理工大学毕业设计说明书

ABSTRACT

The total operating mode of generation, transmission and distribution is presented in the operating mode of power system, which realizes the basic guarantee for the security, high quality and economical operation of power system. The optimization for operating mode of power system is to select an economical and reliable operating mode by comparing synthetically all kinds of operating mode in technical economy to get a reliable and economical operation.

Design the task this time is jiaozuo qunying electric designs of the part two times of 110kV. first, analyze the tend of load department according to all parameter of load about system and circuit on task book. It expounds the necessity to this situation from the rspect of increasing load. capacity and type, capacity and type of using the voltage transformer stand surely at the same time, finally, the result of calculation of calculating that and short out according to the electric current of largest lasting job, make the circuit to protect, the voltage transformer is protected, the bus bar is protected, prevent the thunder from protecting. Thus finished electric designs of the part two times of 110kV.

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