110Kv变电站电气一次部分设计.doc

摘要 本文首先根据任务书上所给系统与线路及相关负荷的参数，通过对负荷资料 的分析进行了负荷计算，根据负荷计算结果确定了主变压器台数，容量及型号， 同时也确定了站用变压器的容量及型号，并从安全，经济及可靠性等方面考虑， 确定了 110kV，35kV，10kV 以及站用电的主接线方案。然后，进行了短路电流计 算，根据最大持续工作电流及短路计算的计算结果，对高压断路器、隔离开关、 电流互感器、电压互感器、母线等主要电气设备进行了选择和校验。之后对变电 站的配电装置进行了选择以及电气平面布置设计。最后做了主变压器的保护和变 电站的防雷保护，从而完成了 110kV 变电站电气部分的设计。 关键词： 变电站，变压器，主接线，短路电流计算 Abstract In this article, on the basis of the system the line and the related load parameters given by the mandate, through the analysis of the load data , we have a load calculation, according to the load calculation results ,we ascentuined the quality capacity and models of the main transformer, but also identified the station transform s capacity and models, considering the security, reliability and economic we identified 110kv, 35kv, 10kv electricity stations and the main cable programmer. Then, made a short-circuit current calculation. In accordance with maximum sustained work current and the short-circuit current calculation results, the high-voltage circuitbreakers, isolation switches, current transformers, voltage transformers, bus and other major electrical equipment had been selected validated .And then made a choice about the devices of the power distribution, substation and did a plane electrical design . Finally we did a main transformer substation protection and a lightning protection, thus the 110 kV electrical substation part of the design had been completed. Key words: substations, transformers , main wiring, short-circuit current calculation 目录 第一部分 设计说明书 1 第一部分 设计说明书 1 TOC \o 1-5 \h \z \o Current Document 引言 1 \o Current Document 原始资料 2 \o Current Document 电气主接线的选择 4 \o Current Document 电气主接线的基础知识 4 \o Current Document 电气主接线的分类 5 \o Current Document 电气主接线设计的原则 6 \o Current Document 主接线方案的选择 7 \o Current Document 站用电接线选择 9 \o Current Document 负荷的计算及主变压器的选择 10 负荷的计算 10 \o Current Document 主变压器的选择 12 \o Current Document 所用变选择 14 \o Current Document 无功功率的补偿 15 \o Current Document 无功补偿装置类型的选择